322 Commits

Author SHA1 Message Date
Bruno Martins
9162135978 Merge branch 'deprecated/android-4.9-q' of https://android.googlesource.com/kernel/common into HEAD
Conflicts:
	arch/arm/Makefile
	arch/arm/include/asm/unistd.h
	arch/arm/kernel/calls.S
	arch/arm64/include/asm/assembler.h
	arch/arm64/include/asm/cputype.h
	arch/arm64/kernel/bpi.S
	arch/arm64/kernel/cpu_errata.c
	arch/arm64/kernel/setup.c
	arch/arm64/kernel/vdso.c
	arch/arm64/mm/proc.S
	arch/mips/include/uapi/asm/Kbuild
	arch/powerpc/include/uapi/asm/Kbuild
	drivers/char/Kconfig
	drivers/char/random.c
	drivers/clk/qcom/clk-rcg2.c
	drivers/gpu/drm/drm_edid.c
	drivers/irqchip/irq-gic.c
	drivers/md/dm-table.c
	drivers/media/dvb-core/dmxdev.c
	drivers/mmc/core/core.c
	drivers/mmc/core/host.c
	drivers/mmc/core/mmc.c
	drivers/mmc/host/sdhci.c
	drivers/net/usb/lan78xx.c
	drivers/scsi/ufs/ufs_quirks.h
	drivers/scsi/ufs/ufshcd.c
	drivers/staging/android/ion/ion-ioctl.c
	drivers/staging/android/ion/ion.c
	drivers/staging/android/ion/ion_priv.h
	drivers/staging/android/ion/ion_system_heap.c
	drivers/tty/tty_io.c
	drivers/usb/core/hub.c
	drivers/usb/core/usb.h
	drivers/usb/dwc3/core.c
	drivers/usb/dwc3/gadget.c
	drivers/usb/gadget/composite.c
	drivers/usb/gadget/configfs.c
	drivers/usb/gadget/function/f_accessory.c
	drivers/usb/gadget/function/rndis.c
	drivers/usb/gadget/function/rndis.h
	fs/eventpoll.c
	fs/ext4/namei.c
	fs/fat/fatent.c
	fs/gfs2/acl.c
	include/linux/random.h
	include/uapi/drm/Kbuild
	include/uapi/linux/Kbuild
	include/uapi/linux/cifs/Kbuild
	include/uapi/linux/genwqe/Kbuild
	kernel/cpu.c
	kernel/exit.c
	kernel/sched/cpufreq_schedutil.c
	lib/Makefile
	lib/string.c
	mm/memory.c
	mm/page-writeback.c
	mm/page_alloc.c
	net/ipv4/udp.c
	net/ipv6/datagram.c
	net/ipv6/ip6_output.c
	net/netfilter/nf_conntrack_irc.c
	net/netfilter/xt_quota2.c
	net/netlink/genetlink.c
	security/selinux/avc.c
	security/selinux/include/objsec.h
	sound/core/compress_offload.c

Change-Id: I41982a5a8e22a21b72ec5dfa61a3680be66213f4
2023-03-26 12:09:00 +01:00
Eric Biggers
ea690b6ba4 Merge 4.9.320 into android-4.9-q
Changes in 4.9.320
	9p: missing chunk of "fs/9p: Don't update file type when updating file attributes"
	random: remove stale maybe_reseed_primary_crng
	random: remove stale urandom_init_wait
	random: remove variable limit
	random: fix comment for unused random_min_urandom_seed
	random: convert get_random_int/long into get_random_u32/u64
	random: move random_min_urandom_seed into CONFIG_SYSCTL ifdef block
	random: invalidate batched entropy after crng init
	random: silence compiler warnings and fix race
	random: add wait_for_random_bytes() API
	random: add get_random_{bytes,u32,u64,int,long,once}_wait family
	random: warn when kernel uses unseeded randomness
	random: do not ignore early device randomness
	random: suppress spammy warnings about unseeded randomness
	random: reorder READ_ONCE() in get_random_uXX
	random: fix warning message on ia64 and parisc
	random: use a different mixing algorithm for add_device_randomness()
	random: set up the NUMA crng instances after the CRNG is fully initialized
	random: fix possible sleeping allocation from irq context
	random: rate limit unseeded randomness warnings
	random: add a spinlock_t to struct batched_entropy
	char/random: silence a lockdep splat with printk()
	Revert "char/random: silence a lockdep splat with printk()"
	random: always use batched entropy for get_random_u{32,64}
	random: fix data race on crng_node_pool
	crypto: chacha20 - Fix keystream alignment for chacha20_block()
	random: always fill buffer in get_random_bytes_wait
	random: optimize add_interrupt_randomness
	drivers/char/random.c: remove unused dont_count_entropy
	random: Fix whitespace pre random-bytes work
	random: Return nbytes filled from hw RNG
	random: add a config option to trust the CPU's hwrng
	random: remove preempt disabled region
	random: Make crng state queryable
	random: make CPU trust a boot parameter
	drivers/char/random.c: constify poolinfo_table
	drivers/char/random.c: remove unused stuct poolinfo::poolbits
	drivers/char/random.c: make primary_crng static
	random: only read from /dev/random after its pool has received 128 bits
	random: move rand_initialize() earlier
	random: document get_random_int() family
	latent_entropy: avoid build error when plugin cflags are not set
	random: fix soft lockup when trying to read from an uninitialized blocking pool
	random: Support freezable kthreads in add_hwgenerator_randomness()
	fdt: add support for rng-seed
	random: Use wait_event_freezable() in add_hwgenerator_randomness()
	char/random: Add a newline at the end of the file
	Revert "hwrng: core - Freeze khwrng thread during suspend"
	crypto: Deduplicate le32_to_cpu_array() and cpu_to_le32_array()
	crypto: blake2s - generic C library implementation and selftest
	lib/crypto: blake2s: move hmac construction into wireguard
	lib/crypto: sha1: re-roll loops to reduce code size
	random: Don't wake crng_init_wait when crng_init == 1
	random: Add a urandom_read_nowait() for random APIs that don't warn
	random: add GRND_INSECURE to return best-effort non-cryptographic bytes
	random: ignore GRND_RANDOM in getentropy(2)
	random: make /dev/random be almost like /dev/urandom
	random: fix crash on multiple early calls to add_bootloader_randomness()
	random: remove the blocking pool
	random: delete code to pull data into pools
	random: remove kernel.random.read_wakeup_threshold
	random: remove unnecessary unlikely()
	random: convert to ENTROPY_BITS for better code readability
	random: Add and use pr_fmt()
	random: fix typo in add_timer_randomness()
	random: remove some dead code of poolinfo
	random: split primary/secondary crng init paths
	random: avoid warnings for !CONFIG_NUMA builds
	x86: Remove arch_has_random, arch_has_random_seed
	powerpc: Remove arch_has_random, arch_has_random_seed
	linux/random.h: Remove arch_has_random, arch_has_random_seed
	linux/random.h: Use false with bool
	linux/random.h: Mark CONFIG_ARCH_RANDOM functions __must_check
	powerpc: Use bool in archrandom.h
	random: add arch_get_random_*long_early()
	random: avoid arch_get_random_seed_long() when collecting IRQ randomness
	random: remove dead code left over from blocking pool
	MAINTAINERS: co-maintain random.c
	crypto: blake2s - include <linux/bug.h> instead of <asm/bug.h>
	crypto: blake2s - adjust include guard naming
	random: document add_hwgenerator_randomness() with other input functions
	random: remove unused irq_flags argument from add_interrupt_randomness()
	random: use BLAKE2s instead of SHA1 in extraction
	random: do not sign extend bytes for rotation when mixing
	random: do not re-init if crng_reseed completes before primary init
	random: mix bootloader randomness into pool
	random: harmonize "crng init done" messages
	random: use IS_ENABLED(CONFIG_NUMA) instead of ifdefs
	random: initialize ChaCha20 constants with correct endianness
	random: early initialization of ChaCha constants
	random: avoid superfluous call to RDRAND in CRNG extraction
	random: don't reset crng_init_cnt on urandom_read()
	random: fix typo in comments
	random: cleanup poolinfo abstraction
	crypto: chacha20 - Fix chacha20_block() keystream alignment (again)
	random: cleanup integer types
	random: remove incomplete last_data logic
	random: remove unused extract_entropy() reserved argument
	random: try to actively add entropy rather than passively wait for it
	random: rather than entropy_store abstraction, use global
	random: remove unused OUTPUT_POOL constants
	random: de-duplicate INPUT_POOL constants
	random: prepend remaining pool constants with POOL_
	random: cleanup fractional entropy shift constants
	random: access input_pool_data directly rather than through pointer
	random: simplify arithmetic function flow in account()
	random: continually use hwgenerator randomness
	random: access primary_pool directly rather than through pointer
	random: only call crng_finalize_init() for primary_crng
	random: use computational hash for entropy extraction
	random: simplify entropy debiting
	random: use linear min-entropy accumulation crediting
	random: always wake up entropy writers after extraction
	random: make credit_entropy_bits() always safe
	random: remove use_input_pool parameter from crng_reseed()
	random: remove batched entropy locking
	random: fix locking in crng_fast_load()
	random: use RDSEED instead of RDRAND in entropy extraction
	random: inline leaves of rand_initialize()
	random: ensure early RDSEED goes through mixer on init
	random: do not xor RDRAND when writing into /dev/random
	random: absorb fast pool into input pool after fast load
	random: use hash function for crng_slow_load()
	random: remove outdated INT_MAX >> 6 check in urandom_read()
	random: zero buffer after reading entropy from userspace
	random: tie batched entropy generation to base_crng generation
	random: remove ifdef'd out interrupt bench
	random: remove unused tracepoints
	random: add proper SPDX header
	random: deobfuscate irq u32/u64 contributions
	random: introduce drain_entropy() helper to declutter crng_reseed()
	random: remove useless header comment
	random: remove whitespace and reorder includes
	random: group initialization wait functions
	random: group entropy extraction functions
	random: group entropy collection functions
	random: group userspace read/write functions
	random: group sysctl functions
	random: rewrite header introductory comment
	workqueue: make workqueue available early during boot
	random: defer fast pool mixing to worker
	random: do not take pool spinlock at boot
	random: unify early init crng load accounting
	random: check for crng_init == 0 in add_device_randomness()
	hwrng: core - do not use multiple blank lines
	hwrng: core - rewrite better comparison to NULL
	hwrng: core - Rewrite the header
	hwrng: core - Move hwrng miscdev minor number to include/linux/miscdevice.h
	hwrng: core - remove unused PFX macro
	hwrng: use rng source with best quality
	hwrng: remember rng chosen by user
	random: pull add_hwgenerator_randomness() declaration into random.h
	random: clear fast pool, crng, and batches in cpuhp bring up
	random: round-robin registers as ulong, not u32
	random: only wake up writers after zap if threshold was passed
	random: cleanup UUID handling
	random: unify cycles_t and jiffies usage and types
	random: do crng pre-init loading in worker rather than irq
	random: give sysctl_random_min_urandom_seed a more sensible value
	random: don't let 644 read-only sysctls be written to
	random: replace custom notifier chain with standard one
	random: use SipHash as interrupt entropy accumulator
	random: make consistent usage of crng_ready()
	random: reseed more often immediately after booting
	random: check for signal and try earlier when generating entropy
	random: skip fast_init if hwrng provides large chunk of entropy
	random: treat bootloader trust toggle the same way as cpu trust toggle
	random: re-add removed comment about get_random_{u32,u64} reseeding
	random: mix build-time latent entropy into pool at init
	random: do not split fast init input in add_hwgenerator_randomness()
	random: do not allow user to keep crng key around on stack
	random: check for signal_pending() outside of need_resched() check
	random: check for signals every PAGE_SIZE chunk of /dev/[u]random
	random: make random_get_entropy() return an unsigned long
	random: document crng_fast_key_erasure() destination possibility
	random: fix sysctl documentation nits
	init: call time_init() before rand_initialize()
	ia64: define get_cycles macro for arch-override
	s390: define get_cycles macro for arch-override
	parisc: define get_cycles macro for arch-override
	alpha: define get_cycles macro for arch-override
	powerpc: define get_cycles macro for arch-override
	timekeeping: Add raw clock fallback for random_get_entropy()
	m68k: use fallback for random_get_entropy() instead of zero
	mips: use fallback for random_get_entropy() instead of just c0 random
	arm: use fallback for random_get_entropy() instead of zero
	nios2: use fallback for random_get_entropy() instead of zero
	x86/tsc: Use fallback for random_get_entropy() instead of zero
	um: use fallback for random_get_entropy() instead of zero
	sparc: use fallback for random_get_entropy() instead of zero
	xtensa: use fallback for random_get_entropy() instead of zero
	uapi: rename ext2_swab() to swab() and share globally in swab.h
	random: insist on random_get_entropy() existing in order to simplify
	random: do not use batches when !crng_ready()
	random: do not pretend to handle premature next security model
	random: order timer entropy functions below interrupt functions
	random: do not use input pool from hard IRQs
	random: help compiler out with fast_mix() by using simpler arguments
	siphash: use one source of truth for siphash permutations
	random: use symbolic constants for crng_init states
	random: avoid initializing twice in credit race
	random: remove ratelimiting for in-kernel unseeded randomness
	random: use proper jiffies comparison macro
	random: handle latent entropy and command line from random_init()
	random: credit architectural init the exact amount
	random: use static branch for crng_ready()
	random: remove extern from functions in header
	random: use proper return types on get_random_{int,long}_wait()
	random: move initialization functions out of hot pages
	random: move randomize_page() into mm where it belongs
	random: convert to using fops->write_iter()
	random: wire up fops->splice_{read,write}_iter()
	random: check for signals after page of pool writes
	Revert "random: use static branch for crng_ready()"
	crypto: drbg - add FIPS 140-2 CTRNG for noise source
	crypto: drbg - always seeded with SP800-90B compliant noise source
	crypto: drbg - prepare for more fine-grained tracking of seeding state
	crypto: drbg - track whether DRBG was seeded with !rng_is_initialized()
	crypto: drbg - move dynamic ->reseed_threshold adjustments to __drbg_seed()
	crypto: drbg - always try to free Jitter RNG instance
	crypto: drbg - make reseeding from get_random_bytes() synchronous
	random: avoid checking crng_ready() twice in random_init()
	random: mark bootloader randomness code as __init
	random: account for arch randomness in bits
	ASoC: cs42l52: Fix TLV scales for mixer controls
	ASoC: cs53l30: Correct number of volume levels on SX controls
	ASoC: cs42l52: Correct TLV for Bypass Volume
	ASoC: cs42l56: Correct typo in minimum level for SX volume controls
	ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo()
	ASoC: wm8962: Fix suspend while playing music
	scsi: vmw_pvscsi: Expand vcpuHint to 16 bits
	scsi: lpfc: Fix port stuck in bypassed state after LIP in PT2PT topology
	virtio-mmio: fix missing put_device() when vm_cmdline_parent registration failed
	nfc: nfcmrvl: Fix memory leak in nfcmrvl_play_deferred
	ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg
	net: ethernet: mtk_eth_soc: fix misuse of mem alloc interface netdev[napi]_alloc_frag
	random: credit cpu and bootloader seeds by default
	pNFS: Don't keep retrying if the server replied NFS4ERR_LAYOUTUNAVAILABLE
	misc: atmel-ssc: Fix IRQ check in ssc_probe
	irqchip/gic/realview: Fix refcount leak in realview_gic_of_init
	irqchip/gic-v3: Iterate over possible CPUs by for_each_possible_cpu()
	comedi: vmk80xx: fix expression for tx buffer size
	USB: serial: option: add support for Cinterion MV31 with new baseline
	USB: serial: io_ti: add Agilent E5805A support
	usb: gadget: lpc32xx_udc: Fix refcount leak in lpc32xx_udc_probe
	serial: 8250: Store to lsr_save_flags after lsr read
	ext4: fix bug_on ext4_mb_use_inode_pa
	ext4: make variable "count" signed
	ext4: add reserved GDT blocks check
	l2tp: don't use inet_shutdown on ppp session destroy
	l2tp: fix race in pppol2tp_release with session object destroy
	s390/mm: use non-quiescing sske for KVM switch to keyed guest
	xprtrdma: fix incorrect header size calculations
	swiotlb: fix info leak with DMA_FROM_DEVICE
	Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE""
	fuse: fix pipe buffer lifetime for direct_io
	tcp: change source port randomizarion at connect() time
	tcp: add some entropy in __inet_hash_connect()
	secure_seq: use the 64 bits of the siphash for port offset calculation
	tcp: use different parts of the port_offset for index and offset
	tcp: add small random increments to the source port
	tcp: dynamically allocate the perturb table used by source ports
	tcp: increase source port perturb table to 2^16
	tcp: drop the hash_32() part from the index calculation
	Linux 4.9.320

Conflicts:
	crypto/chacha20_generic.c
	drivers/char/random.c
	drivers/of/fdt.c
	include/crypto/chacha20.h
	lib/chacha20.c

Merge resolution notes:
  - Added CHACHA20_KEY_SIZE and CHACHA20_BLOCK_SIZE constants to
    chacha.h, to minimize changes from the 4.9.320 version of random.c

  - Updated lib/vsprintf.c for
    "random: replace custom notifier chain with standard one".

Change-Id: Ia7a12d8883b808f88bbe807d6150552bb084f6b3
Signed-off-by: Eric Biggers <ebiggers@google.com>
2022-06-28 16:46:38 +00:00
Jason A. Donenfeld
ed20ec409e random: clear fast pool, crng, and batches in cpuhp bring up
commit 3191dd5a1179ef0fad5a050a1702ae98b6251e8f upstream.

For the irq randomness fast pool, rather than having to use expensive
atomics, which were visibly the most expensive thing in the entire irq
handler, simply take care of the extreme edge case of resetting count to
zero in the cpuhp online handler, just after workqueues have been
reenabled. This simplifies the code a bit and lets us use vanilla
variables rather than atomics, and performance should be improved.

As well, very early on when the CPU comes up, while interrupts are still
disabled, we clear out the per-cpu crng and its batches, so that it
always starts with fresh randomness.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Sultan Alsawaf <sultan@kerneltoast.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-25 11:45:10 +02:00
Greg Kroah-Hartman
ee532e865e Merge 4.9.249 into android-4.9-q
Changes in 4.9.249
	spi: bcm2835aux: Fix use-after-free on unbind
	spi: bcm2835aux: Restore err assignment in bcm2835aux_spi_probe
	iwlwifi: pcie: limit memory read spin time
	arm64: dts: rockchip: Assign a fixed index to mmc devices on rk3399 boards.
	ARC: stack unwinding: don't assume non-current task is sleeping
	platform/x86: acer-wmi: add automatic keyboard background light toggle key as KEY_LIGHTS_TOGGLE
	Input: cm109 - do not stomp on control URB
	Input: i8042 - add Acer laptops to the i8042 reset list
	pinctrl: amd: remove debounce filter setting in IRQ type setting
	scsi: be2iscsi: Revert "Fix a theoretical leak in beiscsi_create_eqs()"
	spi: Prevent adding devices below an unregistering controller
	net/mlx4_en: Avoid scheduling restart task if it is already running
	tcp: fix cwnd-limited bug for TSO deferral where we send nothing
	net: stmmac: delete the eee_ctrl_timer after napi disabled
	net: stmmac: dwmac-meson8b: fix mask definition of the m250_sel mux
	net: bridge: vlan: fix error return code in __vlan_add()
	mac80211: mesh: fix mesh_pathtbl_init() error path
	USB: dummy-hcd: Fix uninitialized array use in init()
	USB: add RESET_RESUME quirk for Snapscan 1212
	ALSA: usb-audio: Fix potential out-of-bounds shift
	ALSA: usb-audio: Fix control 'access overflow' errors from chmap
	xhci: Give USB2 ports time to enter U3 in bus suspend
	USB: sisusbvga: Make console support depend on BROKEN
	ALSA: pcm: oss: Fix potential out-of-bounds shift
	serial: 8250_omap: Avoid FIFO corruption caused by MDR1 access
	pinctrl: merrifield: Set default bias in case no particular value given
	pinctrl: baytrail: Avoid clearing debounce value when turning it off
	scsi: bnx2i: Requires MMU
	can: softing: softing_netdev_open(): fix error handling
	RDMA/cm: Fix an attempt to use non-valid pointer when cleaning timewait
	kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling
	drm/tegra: sor: Disable clocks on error in tegra_sor_init()
	scsi: mpt3sas: Increase IOCInit request timeout to 30s
	dm table: Remove BUG_ON(in_interrupt())
	soc/tegra: fuse: Fix index bug in get_process_id
	USB: serial: option: add interface-number sanity check to flag handling
	USB: gadget: f_acm: add support for SuperSpeed Plus
	USB: gadget: f_midi: setup SuperSpeed Plus descriptors
	USB: gadget: f_rndis: fix bitrate for SuperSpeed and above
	usb: gadget: f_fs: Re-use SS descriptors for SuperSpeedPlus
	usb: chipidea: ci_hdrc_imx: Pass DISABLE_DEVICE_STREAMING flag to imx6ul
	ARM: dts: exynos: fix roles of USB 3.0 ports on Odroid XU
	ARM: dts: exynos: fix USB 3.0 VBUS control and over-current pins on Exynos5410
	ARM: dts: exynos: fix USB 3.0 pins supply being turned off on Odroid XU
	HID: i2c-hid: add Vero K147 to descriptor override
	serial_core: Check for port state when tty is in error state
	media: msi2500: assign SPI bus number dynamically
	md: fix a warning caused by a race between concurrent md_ioctl()s
	Bluetooth: Fix slab-out-of-bounds read in hci_le_direct_adv_report_evt()
	drm/gma500: fix double free of gma_connector
	RDMA/rxe: Compute PSN windows correctly
	ARM: p2v: fix handling of LPAE translation in BE mode
	crypto: talitos - Fix return type of current_desc_hdr()
	spi: img-spfi: fix reference leak in img_spfi_resume
	ASoC: pcm: DRAIN support reactivation
	arm64: dts: exynos: Correct psci compatible used on Exynos7
	Bluetooth: Fix null pointer dereference in hci_event_packet()
	spi: spi-ti-qspi: fix reference leak in ti_qspi_setup
	spi: tegra20-slink: fix reference leak in slink ops of tegra20
	spi: tegra20-sflash: fix reference leak in tegra_sflash_resume
	spi: tegra114: fix reference leak in tegra spi ops
	RDMa/mthca: Work around -Wenum-conversion warning
	MIPS: BCM47XX: fix kconfig dependency bug for BCM47XX_BCMA
	staging: greybus: codecs: Fix reference counter leak in error handling
	media: solo6x10: fix missing snd_card_free in error handling case
	drm/omap: dmm_tiler: fix return error code in omap_dmm_probe()
	Input: ads7846 - fix integer overflow on Rt calculation
	Input: ads7846 - fix unaligned access on 7845
	powerpc/feature: Fix CPU_FTRS_ALWAYS by removing CPU_FTRS_GENERIC_32
	crypto: omap-aes - Fix PM disable depth imbalance in omap_aes_probe
	soc: ti: knav_qmss: fix reference leak in knav_queue_probe
	soc: ti: Fix reference imbalance in knav_dma_probe
	drivers: soc: ti: knav_qmss_queue: Fix error return code in knav_queue_probe
	RDMA/cxgb4: Validate the number of CQEs
	memstick: fix a double-free bug in memstick_check
	ARM: dts: at91: sama5d4_xplained: add pincontrol for USB Host
	ARM: dts: at91: sama5d3_xplained: add pincontrol for USB Host
	orinoco: Move context allocation after processing the skb
	cw1200: fix missing destroy_workqueue() on error in cw1200_init_common
	media: siano: fix memory leak of debugfs members in smsdvb_hotplug
	mips: cdmm: fix use-after-free in mips_cdmm_bus_discover
	HSI: omap_ssi: Don't jump to free ID in ssi_add_controller()
	ARM: dts: at91: at91sam9rl: fix ADC triggers
	NFSv4.2: condition READDIR's mask for security label based on LSM state
	SUNRPC: xprt_load_transport() needs to support the netid "rdma6"
	lockd: don't use interval-based rebinding over TCP
	NFS: switch nfsiod to be an UNBOUND workqueue.
	vfio-pci: Use io_remap_pfn_range() for PCI IO memory
	media: saa7146: fix array overflow in vidioc_s_audio()
	clocksource/drivers/cadence_ttc: Fix memory leak in ttc_setup_clockevent()
	pinctrl: falcon: add missing put_device() call in pinctrl_falcon_probe()
	memstick: r592: Fix error return in r592_probe()
	ASoC: jz4740-i2s: add missed checks for clk_get()
	dm ioctl: fix error return code in target_message
	clocksource/drivers/arm_arch_timer: Correct fault programming of CNTKCTL_EL1.EVNTI
	cpufreq: highbank: Add missing MODULE_DEVICE_TABLE
	cpufreq: st: Add missing MODULE_DEVICE_TABLE
	cpufreq: loongson1: Add missing MODULE_ALIAS
	cpufreq: scpi: Add missing MODULE_ALIAS
	scsi: pm80xx: Fix error return in pm8001_pci_probe()
	seq_buf: Avoid type mismatch for seq_buf_init
	scsi: fnic: Fix error return code in fnic_probe()
	powerpc/pseries/hibernation: drop pseries_suspend_begin() from suspend ops
	usb: ehci-omap: Fix PM disable depth umbalance in ehci_hcd_omap_probe
	usb: oxu210hp-hcd: Fix memory leak in oxu_create
	speakup: fix uninitialized flush_lock
	nfsd: Fix message level for normal termination
	nfs_common: need lock during iterate through the list
	x86/kprobes: Restore BTF if the single-stepping is cancelled
	clk: tegra: Fix duplicated SE clock entry
	extcon: max77693: Fix modalias string
	ASoC: wm_adsp: remove "ctl" from list on error in wm_adsp_create_control()
	irqchip/alpine-msi: Fix freeing of interrupts on allocation error path
	um: chan_xterm: Fix fd leak
	nfc: s3fwrn5: Release the nfc firmware
	powerpc/ps3: use dma_mapping_error()
	checkpatch: fix unescaped left brace
	net: bcmgenet: Fix a resource leak in an error handling path in the probe functin
	net: allwinner: Fix some resources leak in the error handling path of the probe and in the remove function
	net: korina: fix return value
	watchdog: qcom: Avoid context switch in restart handler
	clk: ti: Fix memleak in ti_fapll_synth_setup
	perf record: Fix memory leak when using '--user-regs=?' to list registers
	qlcnic: Fix error code in probe
	clk: s2mps11: Fix a resource leak in error handling paths in the probe function
	cfg80211: initialize rekey_data
	Input: cros_ec_keyb - send 'scancodes' in addition to key events
	Input: goodix - add upside-down quirk for Teclast X98 Pro tablet
	media: gspca: Fix memory leak in probe
	media: sunxi-cir: ensure IR is handled when it is continuous
	media: netup_unidvb: Don't leak SPI master in probe error path
	Input: cyapa_gen6 - fix out-of-bounds stack access
	Revert "ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks"
	ACPI: PNP: compare the string length in the matching_id()
	ALSA: pcm: oss: Fix a few more UBSAN fixes
	ALSA: usb-audio: Disable sample read check if firmware doesn't give back
	s390/dasd: prevent inconsistent LCU device data
	s390/dasd: fix list corruption of pavgroup group list
	s390/dasd: fix list corruption of lcu list
	staging: comedi: mf6x4: Fix AI end-of-conversion detection
	powerpc/perf: Exclude kernel samples while counting events in user space.
	USB: serial: mos7720: fix parallel-port state restore
	USB: serial: keyspan_pda: fix dropped unthrottle interrupts
	USB: serial: keyspan_pda: fix write deadlock
	USB: serial: keyspan_pda: fix stalled writes
	USB: serial: keyspan_pda: fix write-wakeup use-after-free
	USB: serial: keyspan_pda: fix tx-unthrottle use-after-free
	USB: serial: keyspan_pda: fix write unthrottling
	btrfs: quota: Set rescan progress to (u64)-1 if we hit last leaf
	btrfs: scrub: Don't use inode page cache in scrub_handle_errored_block()
	Btrfs: fix selftests failure due to uninitialized i_mode in test inodes
	btrfs: fix return value mixup in btrfs_get_extent
	ext4: fix a memory leak of ext4_free_data
	KVM: arm64: Introduce handling of AArch32 TTBCR2 traps
	powerpc/xmon: Change printk() to pr_cont()
	ceph: fix race in concurrent __ceph_remove_cap invocations
	jffs2: Fix GC exit abnormally
	jfs: Fix array index bounds check in dbAdjTree
	drm/dp_aux_dev: check aux_dev before use in drm_dp_aux_dev_get_by_minor()
	spi: spi-sh: Fix use-after-free on unbind
	spi: davinci: Fix use-after-free on unbind
	spi: pic32: Don't leak DMA channels in probe error path
	spi: rb4xx: Don't leak SPI master in probe error path
	spi: sc18is602: Don't leak SPI master in probe error path
	spi: st-ssc4: Fix unbalanced pm_runtime_disable() in probe error path
	soc: qcom: smp2p: Safely acquire spinlock without IRQs
	mtd: parser: cmdline: Fix parsing of part-names with colons
	iio: buffer: Fix demux update
	iio: adc: rockchip_saradc: fix missing clk_disable_unprepare() on error in rockchip_saradc_resume
	iio:pressure:mpl3115: Force alignment of buffer
	clk: mvebu: a3700: fix the XTAL MODE pin to MPP1_9
	xen-blkback: set ring->xenblkd to NULL after kthread_stop()
	PCI: Fix pci_slot_release() NULL pointer dereference
	Linux 4.9.249

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I4829a32e2ea6e76eefea716f35f42ee02b75c265
2020-12-29 14:16:49 +01:00
Nicholas Piggin
fe34803789 kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling
[ Upstream commit 8ff00399b153440c1c83e20c43020385b416415b ]

powerpc/64s keeps a counter in the mm which counts bits set in
mm_cpumask as well as other things. This means it can't use generic code
to clear bits out of the mask and doesn't adjust the arch specific
counter.

Add an arch override that allows powerpc/64s to use
clear_tasks_mm_cpumask().

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201126102530.691335-4-npiggin@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-29 13:44:50 +01:00
jianzhou
39dc1e4d13 Merge android-4.9.220(90aa475) into msm-4.9
* refs/heads/tmp-90aa475:
  Linux 4.9.220
  x86/vdso: Fix lsl operand order
  x86/microcode/intel: replace sync_core() with native_cpuid_reg(eax)
  x86/CPU: Add native CPUID variants returning a single datum
  mtd: phram: fix a double free issue in error path
  mtd: lpddr: Fix a double free in probe()
  locktorture: Print ratio of acquisitions, not failures
  tty: evh_bytechan: Fix out of bounds accesses
  fbdev: potential information leak in do_fb_ioctl()
  iommu/amd: Fix the configuration of GCR3 table root pointer
  libnvdimm: Out of bounds read in __nd_ioctl()
  ext2: fix debug reference to ext2_xattr_cache
  ext2: fix empty body warnings when -Wextra is used
  NFS: Fix memory leaks in nfs_pageio_stop_mirroring()
  KVM: s390: vsie: Fix possible race when shadowing region 3 tables
  compiler.h: fix error in BUILD_BUG_ON() reporting
  percpu_counter: fix a data race at vm_committed_as
  ext4: do not commit super on read-only bdev
  powerpc/maple: Fix declaration made after definition
  s390/cpuinfo: fix wrong output when CPU0 is offline
  NFS: direct.c: Fix memory leak of dreq when nfs_get_lock_context fails
  clk: tegra: Fix Tegra PMC clock out parents
  power: supply: bq27xxx_battery: Silence deferred-probe error
  clk: at91: usb: continue if clk_hw_round_rate() return zero
  of: unittest: kmemleak in of_unittest_platform_populate()
  arm64: cpu_errata: include required headers
  of: fix missing kobject init for !SYSFS && OF_DYNAMIC config
  soc: qcom: smem: Use le32_to_cpu for comparison
  wil6210: fix length check in __wmi_send
  rtc: pm8xxx: Fix issue in RTC write path
  wil6210: rate limit wil_rx_refill error
  scsi: ufs: ufs-qcom: remove broken hci version quirk
  scsi: ufs: make sure all interrupts are processed
  wil6210: fix temperature debugfs
  wil6210: increase firmware ready timeout
  Revert "gpio: set up initial state from .get_direction()"
  drm: NULL pointer dereference [null-pointer-deref] (CWE 476) problem
  video: fbdev: sis: Remove unnecessary parentheses and commented code
  ALSA: hda: Don't release card at firmware loading error
  scsi: sg: add sg_remove_request in sg_common_write
  objtool: Fix switch table detection in .text.unlikely
  tracing: Fix the race between registering 'snapshot' event trigger and triggering 'snapshot' operation
  scsi: target: fix hang when multiple threads try to destroy the same iscsi session
  scsi: target: remove boilerplate code
  kvm: x86: Host feature SSBD doesn't imply guest feature SPEC_CTRL_SSBD
  dm flakey: check for null arg_name in parse_features()
  ext4: do not zeroout extents beyond i_disksize
  mac80211_hwsim: Use kstrndup() in place of kasprintf()
  btrfs: check commit root generation in should_ignore_root
  ALSA: usb-audio: Don't override ignore_ctl_error value from the map
  ASoC: Intel: mrfld: return error codes when an error occurs
  ASoC: Intel: mrfld: fix incorrect check on p->sink
  ext4: fix incorrect inodes per group in error message
  ext4: fix incorrect group count in ext4_fill_super error message
  jbd2: improve comments about freeing data buffers whose page mapping is NULL
  scsi: ufs: Fix ufshcd_hold() caused scheduling while atomic
  net: ipv6: do not consider routes via gateways for anycast address check
  net: qrtr: send msgs from local of same id as broadcast
  net: ipv4: devinet: Fix crash when add/del multicast IP with autojoin
  hsr: check protocol version in hsr_newlink()
  mfd: dln2: Fix sanity checking for endpoints
  misc: echo: Remove unnecessary parentheses and simplify check for zero
  powerpc/fsl_booke: Avoid creating duplicate tlb1 entry
  ipmi: fix hung processes in __get_guid()
  drm: Remove PageReserved manipulation from drm_pci_alloc
  drm/dp_mst: Fix clearing payload state on topology disable
  Btrfs: fix crash during unmount due to race with delayed inode workers
  powerpc/64/tm: Don't let userspace set regs->trap via sigreturn
  libata: Return correct status in sata_pmp_eh_recover_pm() when ATA_DFLAG_DETACH is set
  hfsplus: fix crash and filesystem corruption when deleting files
  cpufreq: powernv: Fix use-after-free
  kmod: make request_module() return an error when autoloading is disabled
  Input: i8042 - add Acer Aspire 5738z to nomux list
  s390/diag: fix display of diagnose call statistics
  ocfs2: no need try to truncate file beyond i_size
  ext4: fix a data race at inode->i_blocks
  rtc: omap: Use define directive for PIN_CONFIG_ACTIVE_HIGH
  arm64: armv8_deprecated: Fix undef_hook mask for thumb setend
  scsi: zfcp: fix missing erp_lock in port recovery trigger for point-to-point
  dm verity fec: fix memory leak in verity_fec_dtr
  mm: Use fixed constant in page_frag_alloc instead of size + 1
  tools: gpio: Fix out-of-tree build regression
  x86/speculation: Remove redundant arch_smt_update() invocation
  ALSA: hda: Initialize power_state field properly
  crypto: mxs-dcp - fix scatterlist linearization for hash
  btrfs: drop block from cache on error in relocation
  KVM: VMX: fix crash cleanup when KVM wasn't used
  KVM: VMX: Always VMCLEAR in-use VMCSes during crash with kexec support
  KVM: x86: Allocate new rmap and large page tracking when moving memslot
  KVM: s390: vsie: Fix delivery of addressing exceptions
  KVM: s390: vsie: Fix region 1 ASCE sanity shadow address checks
  x86/entry/32: Add missing ASM_CLAC to general_protection entry
  signal: Extend exec_id to 64bits
  ath9k: Handle txpower changes even when TPC is disabled
  MIPS: OCTEON: irq: Fix potential NULL pointer dereference
  irqchip/versatile-fpga: Apply clear-mask earlier
  KEYS: reaching the keys quotas correctly
  thermal: devfreq_cooling: inline all stubs for CONFIG_DEVFREQ_THERMAL=n
  acpi/x86: ignore unspecified bit positions in the ACPI global lock field
  media: ti-vpe: cal: fix disable_irqs to only the intended target
  ALSA: pcm: oss: Fix regression by buffer overflow fix
  ALSA: ice1724: Fix invalid access for enumerated ctl items
  ALSA: hda: Fix potential access overflow in beep helper
  ALSA: hda: Add driver blacklist
  ALSA: usb-audio: Add mixer workaround for TRX40 and co
  usb: gadget: composite: Inform controller driver of self-powered
  usb: gadget: f_fs: Fix use after free issue as part of queue failure
  ASoC: topology: use name_prefix for new kcontrol
  ASoC: dpcm: allow start or stop during pause for backend
  ASoC: dapm: connect virtual mux with default value
  ASoC: fix regwmask
  misc: rtsx: set correct pcr_ops for rts522A
  btrfs: track reloc roots based on their commit root bytenr
  btrfs: remove a BUG_ON() from merge_reloc_roots()
  locking/lockdep: Avoid recursion in lockdep_count_{for,back}ward_deps()
  x86/boot: Use unsigned comparison for addresses
  gfs2: Don't demote a glock until its revokes are written
  libata: Remove extra scsi_host_put() in ata_scsi_add_hosts()
  selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault
  sched: Avoid scale real weight down to zero
  irqchip/versatile-fpga: Handle chained IRQs properly
  i2c: st: fix missing struct parameter description
  qlcnic: Fix bad kzalloc null test
  net: vxge: fix wrong __VA_ARGS__ usage
  bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads

 Conflicts:
	drivers/of/base.c
	drivers/scsi/ufs/ufshcd.c

Change-Id: I5c8628bdd6d5af9a3aec05735eb6fd70011b7c8a
Signed-off-by: jianzhou <jianzhou@codeaurora.org>
2020-05-11 14:05:41 +08:00
Greg Kroah-Hartman
90aa47514b Merge 4.9.220 into android-4.9-q
Changes in 4.9.220
	bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads
	net: vxge: fix wrong __VA_ARGS__ usage
	qlcnic: Fix bad kzalloc null test
	i2c: st: fix missing struct parameter description
	irqchip/versatile-fpga: Handle chained IRQs properly
	sched: Avoid scale real weight down to zero
	selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault
	libata: Remove extra scsi_host_put() in ata_scsi_add_hosts()
	gfs2: Don't demote a glock until its revokes are written
	x86/boot: Use unsigned comparison for addresses
	locking/lockdep: Avoid recursion in lockdep_count_{for,back}ward_deps()
	btrfs: remove a BUG_ON() from merge_reloc_roots()
	btrfs: track reloc roots based on their commit root bytenr
	misc: rtsx: set correct pcr_ops for rts522A
	ASoC: fix regwmask
	ASoC: dapm: connect virtual mux with default value
	ASoC: dpcm: allow start or stop during pause for backend
	ASoC: topology: use name_prefix for new kcontrol
	usb: gadget: f_fs: Fix use after free issue as part of queue failure
	usb: gadget: composite: Inform controller driver of self-powered
	ALSA: usb-audio: Add mixer workaround for TRX40 and co
	ALSA: hda: Add driver blacklist
	ALSA: hda: Fix potential access overflow in beep helper
	ALSA: ice1724: Fix invalid access for enumerated ctl items
	ALSA: pcm: oss: Fix regression by buffer overflow fix
	media: ti-vpe: cal: fix disable_irqs to only the intended target
	acpi/x86: ignore unspecified bit positions in the ACPI global lock field
	thermal: devfreq_cooling: inline all stubs for CONFIG_DEVFREQ_THERMAL=n
	KEYS: reaching the keys quotas correctly
	irqchip/versatile-fpga: Apply clear-mask earlier
	MIPS: OCTEON: irq: Fix potential NULL pointer dereference
	ath9k: Handle txpower changes even when TPC is disabled
	signal: Extend exec_id to 64bits
	x86/entry/32: Add missing ASM_CLAC to general_protection entry
	KVM: s390: vsie: Fix region 1 ASCE sanity shadow address checks
	KVM: s390: vsie: Fix delivery of addressing exceptions
	KVM: x86: Allocate new rmap and large page tracking when moving memslot
	KVM: VMX: Always VMCLEAR in-use VMCSes during crash with kexec support
	KVM: VMX: fix crash cleanup when KVM wasn't used
	btrfs: drop block from cache on error in relocation
	crypto: mxs-dcp - fix scatterlist linearization for hash
	ALSA: hda: Initialize power_state field properly
	x86/speculation: Remove redundant arch_smt_update() invocation
	tools: gpio: Fix out-of-tree build regression
	mm: Use fixed constant in page_frag_alloc instead of size + 1
	dm verity fec: fix memory leak in verity_fec_dtr
	scsi: zfcp: fix missing erp_lock in port recovery trigger for point-to-point
	arm64: armv8_deprecated: Fix undef_hook mask for thumb setend
	rtc: omap: Use define directive for PIN_CONFIG_ACTIVE_HIGH
	ext4: fix a data race at inode->i_blocks
	ocfs2: no need try to truncate file beyond i_size
	s390/diag: fix display of diagnose call statistics
	Input: i8042 - add Acer Aspire 5738z to nomux list
	kmod: make request_module() return an error when autoloading is disabled
	cpufreq: powernv: Fix use-after-free
	hfsplus: fix crash and filesystem corruption when deleting files
	libata: Return correct status in sata_pmp_eh_recover_pm() when ATA_DFLAG_DETACH is set
	powerpc/64/tm: Don't let userspace set regs->trap via sigreturn
	Btrfs: fix crash during unmount due to race with delayed inode workers
	drm/dp_mst: Fix clearing payload state on topology disable
	drm: Remove PageReserved manipulation from drm_pci_alloc
	ipmi: fix hung processes in __get_guid()
	powerpc/fsl_booke: Avoid creating duplicate tlb1 entry
	misc: echo: Remove unnecessary parentheses and simplify check for zero
	mfd: dln2: Fix sanity checking for endpoints
	hsr: check protocol version in hsr_newlink()
	net: ipv4: devinet: Fix crash when add/del multicast IP with autojoin
	net: qrtr: send msgs from local of same id as broadcast
	net: ipv6: do not consider routes via gateways for anycast address check
	scsi: ufs: Fix ufshcd_hold() caused scheduling while atomic
	jbd2: improve comments about freeing data buffers whose page mapping is NULL
	ext4: fix incorrect group count in ext4_fill_super error message
	ext4: fix incorrect inodes per group in error message
	ASoC: Intel: mrfld: fix incorrect check on p->sink
	ASoC: Intel: mrfld: return error codes when an error occurs
	ALSA: usb-audio: Don't override ignore_ctl_error value from the map
	btrfs: check commit root generation in should_ignore_root
	mac80211_hwsim: Use kstrndup() in place of kasprintf()
	ext4: do not zeroout extents beyond i_disksize
	dm flakey: check for null arg_name in parse_features()
	kvm: x86: Host feature SSBD doesn't imply guest feature SPEC_CTRL_SSBD
	scsi: target: remove boilerplate code
	scsi: target: fix hang when multiple threads try to destroy the same iscsi session
	tracing: Fix the race between registering 'snapshot' event trigger and triggering 'snapshot' operation
	objtool: Fix switch table detection in .text.unlikely
	scsi: sg: add sg_remove_request in sg_common_write
	ALSA: hda: Don't release card at firmware loading error
	video: fbdev: sis: Remove unnecessary parentheses and commented code
	drm: NULL pointer dereference [null-pointer-deref] (CWE 476) problem
	Revert "gpio: set up initial state from .get_direction()"
	wil6210: increase firmware ready timeout
	wil6210: fix temperature debugfs
	scsi: ufs: make sure all interrupts are processed
	scsi: ufs: ufs-qcom: remove broken hci version quirk
	wil6210: rate limit wil_rx_refill error
	rtc: pm8xxx: Fix issue in RTC write path
	wil6210: fix length check in __wmi_send
	soc: qcom: smem: Use le32_to_cpu for comparison
	of: fix missing kobject init for !SYSFS && OF_DYNAMIC config
	arm64: cpu_errata: include required headers
	of: unittest: kmemleak in of_unittest_platform_populate()
	clk: at91: usb: continue if clk_hw_round_rate() return zero
	power: supply: bq27xxx_battery: Silence deferred-probe error
	clk: tegra: Fix Tegra PMC clock out parents
	NFS: direct.c: Fix memory leak of dreq when nfs_get_lock_context fails
	s390/cpuinfo: fix wrong output when CPU0 is offline
	powerpc/maple: Fix declaration made after definition
	ext4: do not commit super on read-only bdev
	percpu_counter: fix a data race at vm_committed_as
	compiler.h: fix error in BUILD_BUG_ON() reporting
	KVM: s390: vsie: Fix possible race when shadowing region 3 tables
	NFS: Fix memory leaks in nfs_pageio_stop_mirroring()
	ext2: fix empty body warnings when -Wextra is used
	ext2: fix debug reference to ext2_xattr_cache
	libnvdimm: Out of bounds read in __nd_ioctl()
	iommu/amd: Fix the configuration of GCR3 table root pointer
	fbdev: potential information leak in do_fb_ioctl()
	tty: evh_bytechan: Fix out of bounds accesses
	locktorture: Print ratio of acquisitions, not failures
	mtd: lpddr: Fix a double free in probe()
	mtd: phram: fix a double free issue in error path
	x86/CPU: Add native CPUID variants returning a single datum
	x86/microcode/intel: replace sync_core() with native_cpuid_reg(eax)
	x86/vdso: Fix lsl operand order
	Linux 4.9.220

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I130bead53d151b84c03bac575c0f3760e14538a6
2020-04-24 08:34:09 +02:00
Zhenzhong Duan
f2a02afce6 x86/speculation: Remove redundant arch_smt_update() invocation
commit 34d66caf251df91ff27b24a3a786810d29989eca upstream.

With commit a74cfffb03b7 ("x86/speculation: Rework SMT state change"),
arch_smt_update() is invoked from each individual CPU hotplug function.

Therefore the extra arch_smt_update() call in the sysfs SMT control is
redundant.

Fixes: a74cfffb03b7 ("x86/speculation: Rework SMT state change")
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <konrad.wilk@oracle.com>
Cc: <dwmw@amazon.co.uk>
Cc: <bp@suse.de>
Cc: <srinivas.eeda@oracle.com>
Cc: <peterz@infradead.org>
Cc: <hpa@zytor.com>
Link: https://lkml.kernel.org/r/e2e064f2-e8ef-42ca-bf4f-76b612964752@default
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-24 07:58:57 +02:00
jianzhou
d606fd78ab Merge android-4.9.215(60fbe70) into msm-4.9
* refs/heads/tmp-60fbe70:
  UPSTREAM: sched/psi: Fix OOB write when writing 0 bytes to PSI files
  UPSTREAM: psi: Fix a division error in psi poll()
  UPSTREAM: sched/psi: Fix sampling error and rare div0 crashes with cgroups and high uptime
  UPSTREAM: sched/psi: Correct overly pessimistic size calculation
  Linux 4.9.215
  s390/mm: Explicitly compare PAGE_DEFAULT_KEY against zero in storage_key_init_range
  xen: Enable interrupts when calling _cond_resched()
  ata: ahci: Add shutdown to freeze hardware resources of ahci
  netfilter: xt_hashlimit: limit the max size of hashtable
  ALSA: seq: Fix concurrent access to queue current tick/time
  ALSA: seq: Avoid concurrent access to queue flags
  ALSA: rawmidi: Avoid bit fields for state flags
  ecryptfs: replace BUG_ON with error handling code
  staging: greybus: use after free in gb_audio_manager_remove_all()
  usb: gadget: composite: Fix bMaxPower for SuperSpeedPlus
  scsi: Revert "target: iscsi: Wait for all commands to finish before freeing a session"
  scsi: Revert "RDMA/isert: Fix a recently introduced regression related to logout"
  Btrfs: fix btrfs_wait_ordered_range() so that it waits for all ordered extents
  KVM: apic: avoid calculating pending eoi from an uninitialized val
  KVM: nVMX: Check IO instruction VM-exit conditions
  KVM: nVMX: Refactor IO bitmap checks into helper function
  ext4: fix race between writepages and enabling EXT4_EXTENTS_FL
  ext4: rename s_journal_flag_rwsem to s_writepages_rwsem
  ext4: fix mount failure with quota configured as module
  ext4: add cond_resched() to __ext4_find_entry()
  ext4: fix a data race in EXT4_I(inode)->i_disksize
  netfilter: xt_bpf: add overflow checks
  KVM: nVMX: Don't emulate instructions in guest mode
  lib/stackdepot.c: fix global out-of-bounds in stack_slabs
  vt: vt_ioctl: fix race in VT_RESIZEX
  VT_RESIZEX: get rid of field-by-field copyin
  KVM: x86: don't notify userspace IOAPIC on edge-triggered interrupt EOI
  xhci: apply XHCI_PME_STUCK_QUIRK to Intel Comet Lake platforms
  Revert "ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()"
  tty: serial: imx: setup the correct sg entry for tx dma
  tty/serial: atmel: manage shutdown in case of RS485 or ISO7816 mode
  x86/mce/amd: Fix kobject lifetime
  x86/mce/amd: Publish the bank pointer only after setup has succeeded
  staging: rtl8188eu: Fix potential overuse of kernel memory
  staging: rtl8188eu: Fix potential security hole
  USB: hub: Don't record a connect-change event during reset-resume
  USB: Fix novation SourceControl XL after suspend
  usb: uas: fix a plug & unplug racing
  xhci: Force Maximum Packet size for Full-speed bulk devices to valid range.
  staging: vt6656: fix sign of rx_dbm to bb_pre_ed_rssi.
  staging: android: ashmem: Disallow ashmem memory from being remapped
  vt: selection, handle pending signals in paste_selection
  floppy: check FDC index for errors before assigning it
  net/sched: flower: add missing validation of TCA_FLOWER_FLAGS
  net/sched: matchall: add missing validation of TCA_MATCHALL_FLAGS
  enic: prevent waking up stopped tx queues over watchdog reset
  selinux: ensure we cleanup the internal AVC counters on error in avc_update()
  help_next should increase position index
  brd: check and limit max_part par
  microblaze: Prevent the overflow of the start
  iwlwifi: mvm: Fix thermal zone registration
  irqchip/gic-v3-its: Reference to its_invall_cmd descriptor when building INVALL
  bcache: explicity type cast in bset_bkey_last()
  reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
  lib/scatterlist.c: adjust indentation in __sg_alloc_table
  ocfs2: fix a NULL pointer dereference when call ocfs2_update_inode_fsync_trans()
  radeon: insert 10ms sleep in dce5_crtc_load_lut
  trigger_next should increase position index
  ftrace: fpid_next() should increase position index
  drm/nouveau/disp/nv50-: prevent oops when no channel method map provided
  irqchip/gic-v3: Only provision redistributors that are enabled in ACPI
  cifs: fix NULL dereference in match_prepath
  iwlegacy: ensure loop counter addr does not wrap and cause an infinite loop
  hostap: Adjust indentation in prism2_hostapd_add_sta
  ARM: 8951/1: Fix Kexec compilation issue.
  jbd2: switch to use jbd2_journal_abort() when failed to submit the commit record
  powerpc/sriov: Remove VF eeh_dev state when disabling SR-IOV
  ALSA: hda - Add docking station support for Lenovo Thinkpad T420s
  driver core: platform: fix u32 greater or equal to zero comparison
  s390/ftrace: generate traced function stack frame
  x86/decoder: Add TEST opcode to Group3-2
  remoteproc: Initialize rproc_class before use
  ide: serverworks: potential overflow in svwks_set_pio_mode()
  cmd64x: potential buffer overflow in cmd64x_program_timings()
  pwm: omap-dmtimer: Remove PWM chip in .remove before making it unfunctional
  arm64: fix alternatives with LLVM's integrated assembler
  scsi: iscsi: Don't destroy session if there are outstanding connections
  iommu/arm-smmu-v3: Use WRITE_ONCE() when changing validity of an STE
  usb: musb: omap2430: Get rid of musb .set_vbus for omap2430 glue
  drm/vmwgfx: prevent memory leak in vmw_cmdbuf_res_add
  drm/nouveau: Fix copy-paste error in nouveau_fence_wait_uevent_handler
  drm/nouveau/gr/gk20a,gm200-: add terminators to method lists read from fw
  vme: bridges: reduce stack usage
  driver core: Print device when resources present in really_probe()
  driver core: platform: Prevent resouce overflow from causing infinite loops
  tty: synclink_gt: Adjust indentation in several functions
  tty: synclinkmp: Adjust indentation in several functions
  ASoC: atmel: fix build error with CONFIG_SND_ATMEL_SOC_DMA=m
  wan: ixp4xx_hss: fix compile-testing on 64-bit
  Input: edt-ft5x06 - work around first register access error
  rcu: Use WRITE_ONCE() for assignments to ->pprev for hlist_nulls
  soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
  udf: Fix free space reporting for metadata and virtual partitions
  usbip: Fix unsafe unaligned pointer usage
  tools lib api fs: Fix gcc9 stringop-truncation compilation error
  ALSA: sh: Fix compile warning wrt const
  RDMA/rxe: Fix error type of mmap_offset
  pinctrl: sh-pfc: sh7269: Fix CAN function GPIOs
  PM / devfreq: rk3399_dmc: Add COMPILE_TEST and HAVE_ARM_SMCCC dependency
  x86/vdso: Provide missing include file
  ARM: dts: r8a7779: Add device node for ARM global timer
  drm/mediatek: handle events when enabling/disabling crtc
  scsi: aic7xxx: Adjust indentation in ahc_find_syncrate
  ACPICA: Disassembler: create buffer fields in ACPI_PARSE_LOAD_PASS1
  orinoco: avoid assertion in case of NULL pointer
  rtlwifi: rtl_pci: Fix -Wcast-function-type
  iwlegacy: Fix -Wcast-function-type
  ipw2x00: Fix -Wcast-function-type
  b43legacy: Fix -Wcast-function-type
  ALSA: usx2y: Adjust indentation in snd_usX2Y_hwdep_dsp_status
  reiserfs: Fix spurious unlock in reiserfs_fill_super() error handling
  media: v4l2-device.h: Explicitly compare grp{id,mask} to zero in v4l2_device macros
  NFC: port100: Convert cpu_to_le16(le16_to_cpu(E1) + E2) to use le16_add_cpu().
  PCI/IOV: Fix memory leak in pci_iov_add_virtfn()
  net/wan/fsl_ucc_hdlc: reject muram offsets above 64K
  regulator: rk808: Lower log level on optional GPIOs being not available
  drm/amdgpu: remove 4 set but not used variable in amdgpu_atombios_get_connector_info_from_object_table
  clk: qcom: rcg2: Don't crash if our parent can't be found; return an error
  kconfig: fix broken dependency in randconfig-generated .config
  ext4, jbd2: ensure panic when aborting with zero errno
  tracing: Fix very unlikely race of registering two stat tracers
  tracing: Fix tracing_stat return values in error handling paths
  x86/sysfb: Fix check for bad VRAM size
  jbd2: clear JBD2_ABORT flag before journal_reset to update log tail info when load journal
  usb: gadget: udc: fix possible sleep-in-atomic-context bugs in gr_probe()
  uio: fix a sleep-in-atomic-context bug in uio_dmem_genirq_irqcontrol()
  sparc: Add .exit.data section.
  MIPS: Loongson: Fix potential NULL dereference in loongson3_platform_init()
  efi/x86: Map the entire EFI vendor string before copying it
  pinctrl: baytrail: Do not clear IRQ flags on direct-irq enabled pins
  media: sti: bdisp: fix a possible sleep-in-atomic-context bug in bdisp_device_run()
  gpio: gpio-grgpio: fix possible sleep-in-atomic-context bugs in grgpio_irq_map/unmap()
  powerpc/powernv/iov: Ensure the pdn for VFs always contains a valid PE number
  media: i2c: mt9v032: fix enum mbus codes and frame sizes
  pxa168fb: Fix the function used to release some memory in an error handling path
  pinctrl: sh-pfc: sh7264: Fix CAN function GPIOs
  gianfar: Fix TX timestamping with a stacked DSA driver
  brcmfmac: Fix use after free in brcmf_sdio_readframes()
  cpu/hotplug, stop_machine: Fix stop_machine vs hotplug order
  drm/gma500: Fixup fbdev stolen size usage evaluation
  Revert "KVM: VMX: Add non-canonical check on writes to RTIT address MSRs"
  scsi: qla2xxx: fix a potential NULL pointer dereference
  btrfs: print message when tree-log replay starts
  jbd2: do not clear the BH_Mapped flag when forgetting a metadata buffer
  jbd2: move the clearing of b_modified flag to the journal_unmap_buffer()
  hwmon: (pmbus/ltc2978) Fix PMBus polling of MFR_COMMON definitions.
  perf/x86/intel: Fix inaccurate period in context switch for auto-reload
  s390/time: Fix clk type in get_tod_clock
  padata: Remove broken queue flushing
  perf/x86/amd: Add missing L2 misses event spec to AMD Family 17h's event map
  btrfs: log message when rw remount is attempted with unclean tree-log
  Btrfs: fix race between using extent maps and merging them
  ext4: improve explanation of a mount failure caused by a misconfigured kernel
  ext4: fix checksum errors with indexed dirs
  ext4: don't assume that mmp_nodename/bdevname have NUL
  ALSA: usb-audio: Apply sample rate quirk for Audioengine D1
  ecryptfs: fix a memory leak bug in ecryptfs_init_messaging()
  ecryptfs: fix a memory leak bug in parse_tag_1_packet()
  ALSA: hda: Use scnprintf() for printing texts for sysfs/procfs
  KVM: x86: emulate RDPID
  x86/vdso: Use RDPID in preference to LSL when available

 Conflicts:
	drivers/usb/host/xhci-mem.c

Change-Id: I96eafddc50120464633c0f4815302cbca0921df8
Signed-off-by: jianzhou <jianzhou@codeaurora.org>
2020-03-26 09:48:47 +08:00
Greg Kroah-Hartman
60fbe7034f Merge 4.9.215 into android-4.9-q
Changes in 4.9.215
	x86/vdso: Use RDPID in preference to LSL when available
	KVM: x86: emulate RDPID
	ALSA: hda: Use scnprintf() for printing texts for sysfs/procfs
	ecryptfs: fix a memory leak bug in parse_tag_1_packet()
	ecryptfs: fix a memory leak bug in ecryptfs_init_messaging()
	ALSA: usb-audio: Apply sample rate quirk for Audioengine D1
	ext4: don't assume that mmp_nodename/bdevname have NUL
	ext4: fix checksum errors with indexed dirs
	ext4: improve explanation of a mount failure caused by a misconfigured kernel
	Btrfs: fix race between using extent maps and merging them
	btrfs: log message when rw remount is attempted with unclean tree-log
	perf/x86/amd: Add missing L2 misses event spec to AMD Family 17h's event map
	padata: Remove broken queue flushing
	s390/time: Fix clk type in get_tod_clock
	perf/x86/intel: Fix inaccurate period in context switch for auto-reload
	hwmon: (pmbus/ltc2978) Fix PMBus polling of MFR_COMMON definitions.
	jbd2: move the clearing of b_modified flag to the journal_unmap_buffer()
	jbd2: do not clear the BH_Mapped flag when forgetting a metadata buffer
	btrfs: print message when tree-log replay starts
	scsi: qla2xxx: fix a potential NULL pointer dereference
	Revert "KVM: VMX: Add non-canonical check on writes to RTIT address MSRs"
	drm/gma500: Fixup fbdev stolen size usage evaluation
	cpu/hotplug, stop_machine: Fix stop_machine vs hotplug order
	brcmfmac: Fix use after free in brcmf_sdio_readframes()
	gianfar: Fix TX timestamping with a stacked DSA driver
	pinctrl: sh-pfc: sh7264: Fix CAN function GPIOs
	pxa168fb: Fix the function used to release some memory in an error handling path
	media: i2c: mt9v032: fix enum mbus codes and frame sizes
	powerpc/powernv/iov: Ensure the pdn for VFs always contains a valid PE number
	gpio: gpio-grgpio: fix possible sleep-in-atomic-context bugs in grgpio_irq_map/unmap()
	media: sti: bdisp: fix a possible sleep-in-atomic-context bug in bdisp_device_run()
	pinctrl: baytrail: Do not clear IRQ flags on direct-irq enabled pins
	efi/x86: Map the entire EFI vendor string before copying it
	MIPS: Loongson: Fix potential NULL dereference in loongson3_platform_init()
	sparc: Add .exit.data section.
	uio: fix a sleep-in-atomic-context bug in uio_dmem_genirq_irqcontrol()
	usb: gadget: udc: fix possible sleep-in-atomic-context bugs in gr_probe()
	jbd2: clear JBD2_ABORT flag before journal_reset to update log tail info when load journal
	x86/sysfb: Fix check for bad VRAM size
	tracing: Fix tracing_stat return values in error handling paths
	tracing: Fix very unlikely race of registering two stat tracers
	ext4, jbd2: ensure panic when aborting with zero errno
	kconfig: fix broken dependency in randconfig-generated .config
	clk: qcom: rcg2: Don't crash if our parent can't be found; return an error
	drm/amdgpu: remove 4 set but not used variable in amdgpu_atombios_get_connector_info_from_object_table
	regulator: rk808: Lower log level on optional GPIOs being not available
	net/wan/fsl_ucc_hdlc: reject muram offsets above 64K
	PCI/IOV: Fix memory leak in pci_iov_add_virtfn()
	NFC: port100: Convert cpu_to_le16(le16_to_cpu(E1) + E2) to use le16_add_cpu().
	media: v4l2-device.h: Explicitly compare grp{id,mask} to zero in v4l2_device macros
	reiserfs: Fix spurious unlock in reiserfs_fill_super() error handling
	ALSA: usx2y: Adjust indentation in snd_usX2Y_hwdep_dsp_status
	b43legacy: Fix -Wcast-function-type
	ipw2x00: Fix -Wcast-function-type
	iwlegacy: Fix -Wcast-function-type
	rtlwifi: rtl_pci: Fix -Wcast-function-type
	orinoco: avoid assertion in case of NULL pointer
	ACPICA: Disassembler: create buffer fields in ACPI_PARSE_LOAD_PASS1
	scsi: aic7xxx: Adjust indentation in ahc_find_syncrate
	drm/mediatek: handle events when enabling/disabling crtc
	ARM: dts: r8a7779: Add device node for ARM global timer
	x86/vdso: Provide missing include file
	PM / devfreq: rk3399_dmc: Add COMPILE_TEST and HAVE_ARM_SMCCC dependency
	pinctrl: sh-pfc: sh7269: Fix CAN function GPIOs
	RDMA/rxe: Fix error type of mmap_offset
	ALSA: sh: Fix compile warning wrt const
	tools lib api fs: Fix gcc9 stringop-truncation compilation error
	usbip: Fix unsafe unaligned pointer usage
	udf: Fix free space reporting for metadata and virtual partitions
	soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
	rcu: Use WRITE_ONCE() for assignments to ->pprev for hlist_nulls
	Input: edt-ft5x06 - work around first register access error
	wan: ixp4xx_hss: fix compile-testing on 64-bit
	ASoC: atmel: fix build error with CONFIG_SND_ATMEL_SOC_DMA=m
	tty: synclinkmp: Adjust indentation in several functions
	tty: synclink_gt: Adjust indentation in several functions
	driver core: platform: Prevent resouce overflow from causing infinite loops
	driver core: Print device when resources present in really_probe()
	vme: bridges: reduce stack usage
	drm/nouveau/gr/gk20a,gm200-: add terminators to method lists read from fw
	drm/nouveau: Fix copy-paste error in nouveau_fence_wait_uevent_handler
	drm/vmwgfx: prevent memory leak in vmw_cmdbuf_res_add
	usb: musb: omap2430: Get rid of musb .set_vbus for omap2430 glue
	iommu/arm-smmu-v3: Use WRITE_ONCE() when changing validity of an STE
	scsi: iscsi: Don't destroy session if there are outstanding connections
	arm64: fix alternatives with LLVM's integrated assembler
	pwm: omap-dmtimer: Remove PWM chip in .remove before making it unfunctional
	cmd64x: potential buffer overflow in cmd64x_program_timings()
	ide: serverworks: potential overflow in svwks_set_pio_mode()
	remoteproc: Initialize rproc_class before use
	x86/decoder: Add TEST opcode to Group3-2
	s390/ftrace: generate traced function stack frame
	driver core: platform: fix u32 greater or equal to zero comparison
	ALSA: hda - Add docking station support for Lenovo Thinkpad T420s
	powerpc/sriov: Remove VF eeh_dev state when disabling SR-IOV
	jbd2: switch to use jbd2_journal_abort() when failed to submit the commit record
	ARM: 8951/1: Fix Kexec compilation issue.
	hostap: Adjust indentation in prism2_hostapd_add_sta
	iwlegacy: ensure loop counter addr does not wrap and cause an infinite loop
	cifs: fix NULL dereference in match_prepath
	irqchip/gic-v3: Only provision redistributors that are enabled in ACPI
	drm/nouveau/disp/nv50-: prevent oops when no channel method map provided
	ftrace: fpid_next() should increase position index
	trigger_next should increase position index
	radeon: insert 10ms sleep in dce5_crtc_load_lut
	ocfs2: fix a NULL pointer dereference when call ocfs2_update_inode_fsync_trans()
	lib/scatterlist.c: adjust indentation in __sg_alloc_table
	reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
	bcache: explicity type cast in bset_bkey_last()
	irqchip/gic-v3-its: Reference to its_invall_cmd descriptor when building INVALL
	iwlwifi: mvm: Fix thermal zone registration
	microblaze: Prevent the overflow of the start
	brd: check and limit max_part par
	help_next should increase position index
	selinux: ensure we cleanup the internal AVC counters on error in avc_update()
	enic: prevent waking up stopped tx queues over watchdog reset
	net/sched: matchall: add missing validation of TCA_MATCHALL_FLAGS
	net/sched: flower: add missing validation of TCA_FLOWER_FLAGS
	floppy: check FDC index for errors before assigning it
	vt: selection, handle pending signals in paste_selection
	staging: android: ashmem: Disallow ashmem memory from being remapped
	staging: vt6656: fix sign of rx_dbm to bb_pre_ed_rssi.
	xhci: Force Maximum Packet size for Full-speed bulk devices to valid range.
	usb: uas: fix a plug & unplug racing
	USB: Fix novation SourceControl XL after suspend
	USB: hub: Don't record a connect-change event during reset-resume
	staging: rtl8188eu: Fix potential security hole
	staging: rtl8188eu: Fix potential overuse of kernel memory
	x86/mce/amd: Publish the bank pointer only after setup has succeeded
	x86/mce/amd: Fix kobject lifetime
	tty/serial: atmel: manage shutdown in case of RS485 or ISO7816 mode
	tty: serial: imx: setup the correct sg entry for tx dma
	Revert "ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()"
	xhci: apply XHCI_PME_STUCK_QUIRK to Intel Comet Lake platforms
	KVM: x86: don't notify userspace IOAPIC on edge-triggered interrupt EOI
	VT_RESIZEX: get rid of field-by-field copyin
	vt: vt_ioctl: fix race in VT_RESIZEX
	lib/stackdepot.c: fix global out-of-bounds in stack_slabs
	KVM: nVMX: Don't emulate instructions in guest mode
	netfilter: xt_bpf: add overflow checks
	ext4: fix a data race in EXT4_I(inode)->i_disksize
	ext4: add cond_resched() to __ext4_find_entry()
	ext4: fix mount failure with quota configured as module
	ext4: rename s_journal_flag_rwsem to s_writepages_rwsem
	ext4: fix race between writepages and enabling EXT4_EXTENTS_FL
	KVM: nVMX: Refactor IO bitmap checks into helper function
	KVM: nVMX: Check IO instruction VM-exit conditions
	KVM: apic: avoid calculating pending eoi from an uninitialized val
	Btrfs: fix btrfs_wait_ordered_range() so that it waits for all ordered extents
	scsi: Revert "RDMA/isert: Fix a recently introduced regression related to logout"
	scsi: Revert "target: iscsi: Wait for all commands to finish before freeing a session"
	usb: gadget: composite: Fix bMaxPower for SuperSpeedPlus
	staging: greybus: use after free in gb_audio_manager_remove_all()
	ecryptfs: replace BUG_ON with error handling code
	ALSA: rawmidi: Avoid bit fields for state flags
	ALSA: seq: Avoid concurrent access to queue flags
	ALSA: seq: Fix concurrent access to queue current tick/time
	netfilter: xt_hashlimit: limit the max size of hashtable
	ata: ahci: Add shutdown to freeze hardware resources of ahci
	xen: Enable interrupts when calling _cond_resched()
	s390/mm: Explicitly compare PAGE_DEFAULT_KEY against zero in storage_key_init_range
	Linux 4.9.215

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I4c663321dde48cd2a324e59acb70c99f75f9344e
2020-02-28 16:59:01 +01:00
Peter Zijlstra
a594a9e56a cpu/hotplug, stop_machine: Fix stop_machine vs hotplug order
[ Upstream commit 45178ac0cea853fe0e405bf11e101bdebea57b15 ]

Paul reported a very sporadic, rcutorture induced, workqueue failure.
When the planets align, the workqueue rescuer's self-migrate fails and
then triggers a WARN for running a work on the wrong CPU.

Tejun then figured that set_cpus_allowed_ptr()'s stop_one_cpu() call
could be ignored! When stopper->enabled is false, stop_machine will
insta complete the work, without actually doing the work. Worse, it
will not WARN about this (we really should fix this).

It turns out there is a small window where a freshly online'ed CPU is
marked 'online' but doesn't yet have the stopper task running:

	BP				AP

	bringup_cpu()
	  __cpu_up(cpu, idle)	 -->	start_secondary()
					...
					cpu_startup_entry()
	  bringup_wait_for_ap()
	    wait_for_ap_thread() <--	  cpuhp_online_idle()
					  while (1)
					    do_idle()

					... available to run kthreads ...

	    stop_machine_unpark()
	      stopper->enable = true;

Close this by moving the stop_machine_unpark() into
cpuhp_online_idle(), such that the stopper thread is ready before we
start the idle loop and schedule.

Reported-by: "Paul E. McKenney" <paulmck@kernel.org>
Debugged-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: "Paul E. McKenney" <paulmck@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-28 15:42:16 +01:00
jianzhou
421448684f Merge android-4.9.203(13ff513) into msm-4.9
* refs/heads/tmp-13ff513:
  Linux 4.9.203
  arm64: uaccess: Ensure PAN is re-enabled after unhandled uaccess fault
  ARM: dts: omap5: Fix dual-role mode on Super-Speed port
  spi: rockchip: initialize dma_slave_config properly
  mac80211: minstrel: fix CCK rate group streams value
  misc: cxl: Fix possible null pointer dereference
  hwmon: (ina3221) Fix INA3221_CONFIG_MODE macros
  hwmon: (pwm-fan) Silence error on probe deferral
  orangefs: rate limit the client not running info message
  ARM: 8802/1: Call syscall_trace_exit even when system call skipped
  spi: spidev: Fix OF tree warning logic
  gpio: syscon: Fix possible NULL ptr usage
  x86/kexec: Correct KEXEC_BACKUP_SRC_END off-by-one error
  media: cx231xx: fix potential sign-extension overflow on large shift
  GFS2: Flush the GFS2 delete workqueue before stopping the kernel threads
  media: isif: fix a NULL pointer dereference bug
  printk: Give error on attempt to set log buffer length to over 2G
  mfd: ti_am335x_tscadc: Keep ADC interface on if child is wakeup capable
  backlight: lm3639: Unconditionally call led_classdev_unregister
  proc/vmcore: Fix i386 build error of missing copy_oldmem_page_encrypted()
  s390/kasan: avoid vdso instrumentation
  bcache: recal cached_dev_sectors on detach
  reset: Fix potential use-after-free in __of_reset_control_get()
  fbdev: sbuslib: integer overflow in sbusfb_ioctl_helper()
  fbdev: sbuslib: use checked version of put_user()
  iwlwifi: mvm: don't send keys when entering D3
  ACPI / SBS: Fix rare oops when removing modules
  crypto: mxs-dcp - Fix AES issues
  crypto: mxs-dcp - Fix SHA null hashes and output length
  x86/olpc: Fix build error with CONFIG_MFD_CS5535=m
  Input: silead - try firmware reload after unsuccessful resume
  Input: st1232 - set INPUT_PROP_DIRECT property
  dmaengine: ioat: fix prototype of ioat_enumerate_channels
  NFSv4.x: fix lock recovery during delegation recall
  i2c: brcmstb: Allow enabling the driver on DSL SoCs
  clk: samsung: Use clk_hw API for calling clk framework from clk notifiers
  brcmfmac: fix full timeout waiting for action frame on-channel tx
  brcmfmac: reduce timeout for action frame scan
  cpu/SMT: State SMT is disabled even with nosmt and without "=force"
  mtd: physmap_of: Release resources on error
  USB: serial: cypress_m8: fix interrupt-out transfer length
  KVM: PPC: Book3S PR: Exiting split hack mode needs to fixup both PC and LR
  ALSA: hda/sigmatel - Disable automute for Elo VuPoint
  media: pxa_camera: Fix check for pdev->dev.of_node
  ata: ep93xx: Use proper enums for directions
  ACPICA: Never run _REG on system_memory and system_IO
  IB/mlx4: Avoid implicit enumerated type conversion
  IB/mthca: Fix error return code in __mthca_init_one()
  ixgbe: Fix crash with VFs and flow director on interface flap
  mtd: rawnand: sh_flctl: Use proper enum for flctl_dma_fifo0_transfer
  powerpc/pseries: Fix how we iterate over the DTL entries
  powerpc/pseries: Fix DTL buffer registration
  cxgb4: Use proper enum in IEEE_FAUX_SYNC
  cxgb4: Use proper enum in cxgb4_dcb_handle_fw_update
  mei: samples: fix a signedness bug in amt_host_if_call()
  dmaengine: timb_dma: Use proper enum in td_prep_slave_sg
  dmaengine: ep93xx: Return proper enum in ep93xx_dma_chan_direction
  nl80211: Fix a GET_KEY reply attribute
  usb: gadget: udc: fotg210-udc: Fix a sleep-in-atomic-context bug in fotg210_get_status()
  ath9k: fix reporting calculated new FFT upper max
  ata: ahci_brcm: Allow using driver or DSL SoCs
  ath10k: fix vdev-start timeout on error
  arm64/numa: Report correct memblock range for the dummy node
  kvm: arm/arm64: Fix stage2_flush_memslot for 4 level page table
  SUNRPC: Fix priority queue fairness
  f2fs: return correct errno in f2fs_gc
  ARM: dts: omap5: enable OTG role for DWC3 controller
  net: xen-netback: fix return type of ndo_start_xmit function
  net: ovs: fix return type of ndo_start_xmit function
  libata: have ata_scsi_rw_xlat() fail invalid passthrough requests
  block: introduce blk_rq_is_passthrough
  fbdev: Ditch fb_edid_add_monspecs
  uprobes/x86: Prohibit probing on MOV SS instruction
  kprobes/x86: Prohibit probing on exception masking instructions
  x86/atomic: Fix smp_mb__{before,after}_atomic()
  net: cdc_ncm: Signedness bug in cdc_ncm_set_dgram_size()
  slcan: Fix memory leak in error path
  memfd: Use radix_tree_deref_slot_protected to avoid the warning.
  IB/iser: Fix possible NULL deref at iser_inv_desc()
  fuse: use READ_ONCE on congestion_threshold and max_background
  usb: xhci-mtk: fix ISOC error when interval is zero
  ARM: dts: lpc32xx: Fix SPI controller node names
  arm64: dts: lg: Fix SPI controller node names
  arm64: dts: amd: Fix SPI bus warnings
  scsi: NCR5380: Handle BUS FREE during reselection
  scsi: NCR5380: Don't call dsprintk() following reselection interrupt
  scsi: NCR5380: Don't clear busy flag when abort fails
  scsi: NCR5380: Check for invalid reselection target
  scsi: NCR5380: Use DRIVER_SENSE to indicate valid sense data
  scsi: NCR5380: Clear all unissued commands on host reset
  crypto: fix a memory leak in rsa-kcs1pad's encryption mode
  crypto: s5p-sss: Fix Fix argument list alignment
  Bluetooth: L2CAP: Detect if remote is not able to use the whole MPS
  ARM: dts: realview: Fix SPI controller node names
  EDAC: Raise the maximum number of memory controllers
  net: smsc: fix return type of ndo_start_xmit function
  ARM: dts: paz00: fix wakeup gpio keycode
  ARM: tegra: apalis_t30: fix mmc1 cmd pull-up
  ARM: dts: tegra30: fix xcvr-setup-use-fuses
  scsi: libsas: always unregister the old device if going to discover new
  vfio/pci: Mask buggy SR-IOV VF INTx support
  vfio/pci: Fix potential memory leak in vfio_msi_cap_len
  misc: genwqe: should return proper error value.
  misc: kgdbts: Fix restrict error
  coresight: tmc: Fix byte-address alignment for RRP
  coresight: etm4x: Configure EL2 exception level when kernel is running in HYP
  coresight: Fix handling of sinks
  usb: gadget: uvc: Only halt video streaming endpoint in bulk mode
  usb: gadget: uvc: Factor out video USB request queueing
  phy: phy-twl4030-usb: fix denied runtime access
  usb: gadget: uvc: configfs: Prevent format changes after linking header
  usb: gadget: uvc: configfs: Drop leaked references to config items
  media: davinci: Fix implicit enum conversion warning
  media: au0828: Fix incorrect error messages
  media: pci: ivtv: Fix a sleep-in-atomic-context bug in ivtv_yuv_init()
  MIPS: kexec: Relax memory restriction
  x86/CPU: Use correct macros for Cyrix calls
  net: micrel: fix return type of ndo_start_xmit function
  bnx2x: Ignore bandwidth attention in single function mode
  ARM: dts: marvell: Fix SPI and I2C bus warnings
  cpufeature: avoid warning when compiling with clang
  spi: pic32: Use proper enum in dmaengine_prep_slave_rg
  ARM: dts: ste: Fix SPI controller node names
  ARM: dts: ux500: Fix LCDA clock line muxing
  ARM: dts: ux500: Correct SCU unit address
  f2fs: fix to recover inode's uid/gid during POR
  ARM: dts: am335x-evm: fix number of cpsw
  mlxsw: spectrum: Init shaper for TCs 8..15
  usb: chipidea: Fix otg event handler
  usb: chipidea: imx: enable OTG overcurrent in case USB subsystem is already started
  net: amd: fix return type of ndo_start_xmit function
  net: broadcom: fix return type of ndo_start_xmit function
  net: xilinx: fix return type of ndo_start_xmit function
  net: toshiba: fix return type of ndo_start_xmit function
  power: supply: twl4030_charger: disable eoc interrupt on linear charge
  power: supply: twl4030_charger: fix charging current out-of-bounds
  libfdt: Ensure INT_MAX is defined in libfdt_env.h
  RDMA/i40iw: Fix incorrect iterator type
  powerpc/pseries: Disable CPU hotplug across migrations
  powerpc/64s/hash: Fix stab_rr off by one initialization
  powerpc/iommu: Avoid derefence before pointer check
  serial: mxs-auart: Fix potential infinite loop
  PCI/ACPI: Correct error message for ASPM disabling
  s390/qeth: invoke softirqs after napi_schedule()
  ath9k: Fix a locking bug in ath9k_add_interface()
  ARM: dts: rockchip: Fix erroneous SPI bus dtc warnings on rk3036
  ip_gre: fix parsing gre header in ipgre_err
  kernfs: Fix range checks in kernfs_get_target_path
  component: fix loop condition to call unbind() if bind() fails
  power: supply: max8998-charger: Fix platform data retrieval
  power: reset: at91-poweroff: do not procede if at91_shdwc is allocated
  power: supply: ab8500_fg: silence uninitialized variable warnings
  cxgb4: Fix endianness issue in t4_fwcache()
  pinctrl: at91: don't use the same irqchip with multiple gpiochips
  ARM: dts: socfpga: Fix I2C bus unit-address error
  powerpc/vdso: Correct call frame information
  ARM: dts: qcom: ipq4019: fix cpu0's qcom,saw2 reg value
  llc: avoid blocking in llc_sap_close()
  pinctrl: at91-pio4: fix has_config check in atmel_pctl_dt_subnode_to_map()
  ALSA: intel8x0m: Register irq handler after register initializations
  media: dvb: fix compat ioctl translation
  media: fix: media: pci: meye: validate offset to avoid arbitrary access
  nvmem: core: return error code instead of NULL from nvmem_device_get
  kprobes: Don't call BUG_ON() if there is a kprobe in use on free list
  scsi: pm80xx: Fixed system hang issue during kexec boot
  scsi: pm80xx: Corrected dma_unmap_sg() parameter
  ARM: imx6: register pm_power_off handler if "fsl,pmic-stby-poweroff" is set
  scsi: sym53c8xx: fix NULL pointer dereference panic in sym_int_sir()
  f2fs: fix memory leak of percpu counter in fill_super()
  signal: Properly deliver SIGSEGV from x86 uprobes
  signal: Properly deliver SIGILL from uprobes
  signal: Always ignore SIGKILL and SIGSTOP sent to the global init
  ath9k: add back support for using active monitor interfaces for tx99
  dmaengine: dma-jz4780: Further residue status fix
  dmaengine: dma-jz4780: Don't depend on MACH_JZ4780
  ARM: dts: omap3-gta04: keep vpll2 always on
  ARM: dts: omap3-gta04: make NAND partitions compatible with recent U-Boot
  ARM: dts: omap3-gta04: fix touchscreen tsc2007
  ARM: dts: omap3-gta04: tvout: enable as display1 alias
  ARM: dts: omap3-gta04: fixes for tvout / venc
  ARM: dts: omap3-gta04: give spi_lcd node a label so that we can overwrite in other DTS files
  of: make PowerMac cache node search conditional on CONFIG_PPC_PMAC
  ASoC: Intel: hdac_hdmi: Limit sampling rates at dai creation
  mips: txx9: fix iounmap related issue
  ath10k: wmi: disable softirq's while calling ieee80211_rx
  ARM: dts: exynos: Disable pull control for S5M8767 PMIC
  ASoC: sgtl5000: avoid division by zero if lo_vag is zero
  net: lan78xx: Bail out if lan78xx_get_endpoints fails
  rtl8187: Fix warning generated when strncpy() destination length matches the sixe argument
  ARM: dts: pxa: fix power i2c base address
  iwlwifi: mvm: avoid sending too many BARs
  IB/rxe: fixes for rdma read retry
  i40e: Prevent deleting MAC address from VF when set by PF
  i40e: hold the rtnl lock on clearing interrupt scheme
  i40e: use correct length for strncpy
  ARM: dts: exynos: Fix regulators configuration on Peach Pi/Pit Chromebooks
  ARM: dts: exynos: Fix sound in Snow-rev5 Chromebook
  MIPS: BCM47XX: Enable USB power on Netgear WNDR3400v3
  ASoC: dpcm: Properly initialise hw->rate_max
  gfs2: Don't set GFS2_RDF_UPTODATE when the lvb is updated
  ath9k: fix tx99 with monitor mode interface
  ALSA: seq: Do error checks at creating system ports
  cfg80211: Avoid regulatory restore when COUNTRY_IE_IGNORE is set
  ARM: dts: at91/trivial: Fix USART1 definition for at91sam9g45
  arm64: dts: tegra210-p2180: Correct sdmmc4 vqmmc-supply
  ALSA: pcm: signedness bug in snd_pcm_plug_alloc()
  iio: dac: mcp4922: fix error handling in mcp4922_write_raw
  ath10k: fix kernel panic by moving pci flush after napi_disable
  mmc: sdhci-of-at91: fix quirk2 overwrite
  mm: hugetlb: switch to css_tryget() in hugetlb_cgroup_charge_cgroup()
  mm: memcg: switch to css_tryget() in get_mem_cgroup_from_mm()
  iommu/vt-d: Fix QI_DEV_IOTLB_PFSID and QI_DEV_EIOTLB_PFSID macros
  ecryptfs_lookup_interpose(): lower_dentry->d_parent is not stable either
  ecryptfs_lookup_interpose(): lower_dentry->d_inode is not stable
  IB/hfi1: Ensure full Gen3 speed in a Gen4 system
  Input: synaptics-rmi4 - destroy F54 poller workqueue when removing
  Input: synaptics-rmi4 - clear IRQ enables for F54
  Input: synaptics-rmi4 - fix video buffer size
  Input: ff-memless - kill timer in destroy()
  ALSA: usb-audio: not submit urb for stopped endpoint
  ALSA: usb-audio: Fix missing error check at mixer resolution test
  slip: Fix memory leak in slip_open error path
  ax88172a: fix information leak on short answers

  Conflicts:
 	include/linux/libfdt_env.h

Change-Id: I3cd727a3adcd9b3f1979867923992f3d6fcd7dac
Signed-off-by: jianzhou <jianzhou@codeaurora.org>
2020-01-06 18:07:05 +08:00
jianzhou
b7318a41c9 Merge android-4.9.202(258971b) into msm-4.9
* refs/heads/tmp-258971b:
  Linux 4.9.202
  Documentation: Add ITLB_MULTIHIT documentation
  kvm: x86: mmu: Recovery of shattered NX large pages
  kvm: Add helper function for creating VM worker threads
  kvm: mmu: ITLB_MULTIHIT mitigation
  cpu/speculation: Uninline and export CPU mitigations helpers
  x86/bugs: Add ITLB_MULTIHIT bug infrastructure
  KVM: vmx, svm: always run with EFER.NXE=1 when shadow paging is active
  KVM: x86: add tracepoints around __direct_map and FNAME(fetch)
  KVM: x86: Add is_executable_pte()
  KVM: x86: change kvm_mmu_page_get_gfn BUG_ON to WARN_ON
  KVM: x86: remove now unneeded hugepage gfn adjustment
  KVM: x86: make FNAME(fetch) and __direct_map more similar
  kvm: x86: Do not release the page inside mmu_set_spte()
  kvm: Convert kvm_lock to a mutex
  KVM: x86: extend usage of RET_MMIO_PF_* constants
  KVM: x86: simplify ept_misconfig
  x86/speculation/taa: Fix printing of TAA_MSG_SMT on IBRS_ALL CPUs
  x86/tsx: Add config options to set tsx=on|off|auto
  x86/speculation/taa: Add documentation for TSX Async Abort
  x86/tsx: Add "auto" option to the tsx= cmdline parameter
  kvm/x86: Export MDS_NO=0 to guests when TSX is enabled
  x86/speculation/taa: Add sysfs reporting for TSX Async Abort
  x86/speculation/taa: Add mitigation for TSX Async Abort
  x86/cpu: Add a "tsx=" cmdline option with TSX disabled by default
  x86/cpu: Add a helper function x86_read_arch_cap_msr()
  x86/msr: Add the IA32_TSX_CTRL MSR
  KVM: x86: use Intel speculation bugs and features as derived in generic x86 code
  usb: gadget: core: unmap request from DMA only if previously mapped
  MIPS: BCM63XX: fix switch core reset on BCM6368
  Bluetooth: hci_ldisc: Postpone HCI_UART_PROTO_READY bit set in hci_uart_set_proto()
  kvm: mmu: Don't read PDPTEs when paging is not enabled

Change-Id: I011afa22678ebad9d061ed6bb386ca13cfd7bb50
Signed-off-by: jianzhou <jianzhou@codeaurora.org>
2020-01-06 18:03:23 +08:00
Greg Kroah-Hartman
13ff5130ff Merge 4.9.203 into android-4.9-q
Changes in 4.9.203
	ax88172a: fix information leak on short answers
	slip: Fix memory leak in slip_open error path
	ALSA: usb-audio: Fix missing error check at mixer resolution test
	ALSA: usb-audio: not submit urb for stopped endpoint
	Input: ff-memless - kill timer in destroy()
	Input: synaptics-rmi4 - fix video buffer size
	Input: synaptics-rmi4 - clear IRQ enables for F54
	Input: synaptics-rmi4 - destroy F54 poller workqueue when removing
	IB/hfi1: Ensure full Gen3 speed in a Gen4 system
	ecryptfs_lookup_interpose(): lower_dentry->d_inode is not stable
	ecryptfs_lookup_interpose(): lower_dentry->d_parent is not stable either
	iommu/vt-d: Fix QI_DEV_IOTLB_PFSID and QI_DEV_EIOTLB_PFSID macros
	mm: memcg: switch to css_tryget() in get_mem_cgroup_from_mm()
	mm: hugetlb: switch to css_tryget() in hugetlb_cgroup_charge_cgroup()
	mmc: sdhci-of-at91: fix quirk2 overwrite
	ath10k: fix kernel panic by moving pci flush after napi_disable
	iio: dac: mcp4922: fix error handling in mcp4922_write_raw
	ALSA: pcm: signedness bug in snd_pcm_plug_alloc()
	arm64: dts: tegra210-p2180: Correct sdmmc4 vqmmc-supply
	ARM: dts: at91/trivial: Fix USART1 definition for at91sam9g45
	cfg80211: Avoid regulatory restore when COUNTRY_IE_IGNORE is set
	ALSA: seq: Do error checks at creating system ports
	ath9k: fix tx99 with monitor mode interface
	gfs2: Don't set GFS2_RDF_UPTODATE when the lvb is updated
	ASoC: dpcm: Properly initialise hw->rate_max
	MIPS: BCM47XX: Enable USB power on Netgear WNDR3400v3
	ARM: dts: exynos: Fix sound in Snow-rev5 Chromebook
	ARM: dts: exynos: Fix regulators configuration on Peach Pi/Pit Chromebooks
	i40e: use correct length for strncpy
	i40e: hold the rtnl lock on clearing interrupt scheme
	i40e: Prevent deleting MAC address from VF when set by PF
	IB/rxe: fixes for rdma read retry
	iwlwifi: mvm: avoid sending too many BARs
	ARM: dts: pxa: fix power i2c base address
	rtl8187: Fix warning generated when strncpy() destination length matches the sixe argument
	net: lan78xx: Bail out if lan78xx_get_endpoints fails
	ASoC: sgtl5000: avoid division by zero if lo_vag is zero
	ARM: dts: exynos: Disable pull control for S5M8767 PMIC
	ath10k: wmi: disable softirq's while calling ieee80211_rx
	mips: txx9: fix iounmap related issue
	ASoC: Intel: hdac_hdmi: Limit sampling rates at dai creation
	of: make PowerMac cache node search conditional on CONFIG_PPC_PMAC
	ARM: dts: omap3-gta04: give spi_lcd node a label so that we can overwrite in other DTS files
	ARM: dts: omap3-gta04: fixes for tvout / venc
	ARM: dts: omap3-gta04: tvout: enable as display1 alias
	ARM: dts: omap3-gta04: fix touchscreen tsc2007
	ARM: dts: omap3-gta04: make NAND partitions compatible with recent U-Boot
	ARM: dts: omap3-gta04: keep vpll2 always on
	dmaengine: dma-jz4780: Don't depend on MACH_JZ4780
	dmaengine: dma-jz4780: Further residue status fix
	ath9k: add back support for using active monitor interfaces for tx99
	signal: Always ignore SIGKILL and SIGSTOP sent to the global init
	signal: Properly deliver SIGILL from uprobes
	signal: Properly deliver SIGSEGV from x86 uprobes
	f2fs: fix memory leak of percpu counter in fill_super()
	scsi: sym53c8xx: fix NULL pointer dereference panic in sym_int_sir()
	ARM: imx6: register pm_power_off handler if "fsl,pmic-stby-poweroff" is set
	scsi: pm80xx: Corrected dma_unmap_sg() parameter
	scsi: pm80xx: Fixed system hang issue during kexec boot
	kprobes: Don't call BUG_ON() if there is a kprobe in use on free list
	nvmem: core: return error code instead of NULL from nvmem_device_get
	media: fix: media: pci: meye: validate offset to avoid arbitrary access
	media: dvb: fix compat ioctl translation
	ALSA: intel8x0m: Register irq handler after register initializations
	pinctrl: at91-pio4: fix has_config check in atmel_pctl_dt_subnode_to_map()
	llc: avoid blocking in llc_sap_close()
	ARM: dts: qcom: ipq4019: fix cpu0's qcom,saw2 reg value
	powerpc/vdso: Correct call frame information
	ARM: dts: socfpga: Fix I2C bus unit-address error
	pinctrl: at91: don't use the same irqchip with multiple gpiochips
	cxgb4: Fix endianness issue in t4_fwcache()
	power: supply: ab8500_fg: silence uninitialized variable warnings
	power: reset: at91-poweroff: do not procede if at91_shdwc is allocated
	power: supply: max8998-charger: Fix platform data retrieval
	component: fix loop condition to call unbind() if bind() fails
	kernfs: Fix range checks in kernfs_get_target_path
	ip_gre: fix parsing gre header in ipgre_err
	ARM: dts: rockchip: Fix erroneous SPI bus dtc warnings on rk3036
	ath9k: Fix a locking bug in ath9k_add_interface()
	s390/qeth: invoke softirqs after napi_schedule()
	PCI/ACPI: Correct error message for ASPM disabling
	serial: mxs-auart: Fix potential infinite loop
	powerpc/iommu: Avoid derefence before pointer check
	powerpc/64s/hash: Fix stab_rr off by one initialization
	powerpc/pseries: Disable CPU hotplug across migrations
	RDMA/i40iw: Fix incorrect iterator type
	libfdt: Ensure INT_MAX is defined in libfdt_env.h
	power: supply: twl4030_charger: fix charging current out-of-bounds
	power: supply: twl4030_charger: disable eoc interrupt on linear charge
	net: toshiba: fix return type of ndo_start_xmit function
	net: xilinx: fix return type of ndo_start_xmit function
	net: broadcom: fix return type of ndo_start_xmit function
	net: amd: fix return type of ndo_start_xmit function
	usb: chipidea: imx: enable OTG overcurrent in case USB subsystem is already started
	usb: chipidea: Fix otg event handler
	mlxsw: spectrum: Init shaper for TCs 8..15
	ARM: dts: am335x-evm: fix number of cpsw
	f2fs: fix to recover inode's uid/gid during POR
	ARM: dts: ux500: Correct SCU unit address
	ARM: dts: ux500: Fix LCDA clock line muxing
	ARM: dts: ste: Fix SPI controller node names
	spi: pic32: Use proper enum in dmaengine_prep_slave_rg
	cpufeature: avoid warning when compiling with clang
	ARM: dts: marvell: Fix SPI and I2C bus warnings
	bnx2x: Ignore bandwidth attention in single function mode
	net: micrel: fix return type of ndo_start_xmit function
	x86/CPU: Use correct macros for Cyrix calls
	MIPS: kexec: Relax memory restriction
	media: pci: ivtv: Fix a sleep-in-atomic-context bug in ivtv_yuv_init()
	media: au0828: Fix incorrect error messages
	media: davinci: Fix implicit enum conversion warning
	usb: gadget: uvc: configfs: Drop leaked references to config items
	usb: gadget: uvc: configfs: Prevent format changes after linking header
	phy: phy-twl4030-usb: fix denied runtime access
	usb: gadget: uvc: Factor out video USB request queueing
	usb: gadget: uvc: Only halt video streaming endpoint in bulk mode
	coresight: Fix handling of sinks
	coresight: etm4x: Configure EL2 exception level when kernel is running in HYP
	coresight: tmc: Fix byte-address alignment for RRP
	misc: kgdbts: Fix restrict error
	misc: genwqe: should return proper error value.
	vfio/pci: Fix potential memory leak in vfio_msi_cap_len
	vfio/pci: Mask buggy SR-IOV VF INTx support
	scsi: libsas: always unregister the old device if going to discover new
	ARM: dts: tegra30: fix xcvr-setup-use-fuses
	ARM: tegra: apalis_t30: fix mmc1 cmd pull-up
	ARM: dts: paz00: fix wakeup gpio keycode
	net: smsc: fix return type of ndo_start_xmit function
	EDAC: Raise the maximum number of memory controllers
	ARM: dts: realview: Fix SPI controller node names
	Bluetooth: L2CAP: Detect if remote is not able to use the whole MPS
	crypto: s5p-sss: Fix Fix argument list alignment
	crypto: fix a memory leak in rsa-kcs1pad's encryption mode
	scsi: NCR5380: Clear all unissued commands on host reset
	scsi: NCR5380: Use DRIVER_SENSE to indicate valid sense data
	scsi: NCR5380: Check for invalid reselection target
	scsi: NCR5380: Don't clear busy flag when abort fails
	scsi: NCR5380: Don't call dsprintk() following reselection interrupt
	scsi: NCR5380: Handle BUS FREE during reselection
	arm64: dts: amd: Fix SPI bus warnings
	arm64: dts: lg: Fix SPI controller node names
	ARM: dts: lpc32xx: Fix SPI controller node names
	usb: xhci-mtk: fix ISOC error when interval is zero
	fuse: use READ_ONCE on congestion_threshold and max_background
	IB/iser: Fix possible NULL deref at iser_inv_desc()
	memfd: Use radix_tree_deref_slot_protected to avoid the warning.
	slcan: Fix memory leak in error path
	net: cdc_ncm: Signedness bug in cdc_ncm_set_dgram_size()
	x86/atomic: Fix smp_mb__{before,after}_atomic()
	kprobes/x86: Prohibit probing on exception masking instructions
	uprobes/x86: Prohibit probing on MOV SS instruction
	fbdev: Ditch fb_edid_add_monspecs
	block: introduce blk_rq_is_passthrough
	libata: have ata_scsi_rw_xlat() fail invalid passthrough requests
	net: ovs: fix return type of ndo_start_xmit function
	net: xen-netback: fix return type of ndo_start_xmit function
	ARM: dts: omap5: enable OTG role for DWC3 controller
	f2fs: return correct errno in f2fs_gc
	SUNRPC: Fix priority queue fairness
	kvm: arm/arm64: Fix stage2_flush_memslot for 4 level page table
	arm64/numa: Report correct memblock range for the dummy node
	ath10k: fix vdev-start timeout on error
	ata: ahci_brcm: Allow using driver or DSL SoCs
	ath9k: fix reporting calculated new FFT upper max
	usb: gadget: udc: fotg210-udc: Fix a sleep-in-atomic-context bug in fotg210_get_status()
	nl80211: Fix a GET_KEY reply attribute
	dmaengine: ep93xx: Return proper enum in ep93xx_dma_chan_direction
	dmaengine: timb_dma: Use proper enum in td_prep_slave_sg
	mei: samples: fix a signedness bug in amt_host_if_call()
	cxgb4: Use proper enum in cxgb4_dcb_handle_fw_update
	cxgb4: Use proper enum in IEEE_FAUX_SYNC
	powerpc/pseries: Fix DTL buffer registration
	powerpc/pseries: Fix how we iterate over the DTL entries
	mtd: rawnand: sh_flctl: Use proper enum for flctl_dma_fifo0_transfer
	ixgbe: Fix crash with VFs and flow director on interface flap
	IB/mthca: Fix error return code in __mthca_init_one()
	IB/mlx4: Avoid implicit enumerated type conversion
	ACPICA: Never run _REG on system_memory and system_IO
	ata: ep93xx: Use proper enums for directions
	media: pxa_camera: Fix check for pdev->dev.of_node
	ALSA: hda/sigmatel - Disable automute for Elo VuPoint
	KVM: PPC: Book3S PR: Exiting split hack mode needs to fixup both PC and LR
	USB: serial: cypress_m8: fix interrupt-out transfer length
	mtd: physmap_of: Release resources on error
	cpu/SMT: State SMT is disabled even with nosmt and without "=force"
	brcmfmac: reduce timeout for action frame scan
	brcmfmac: fix full timeout waiting for action frame on-channel tx
	clk: samsung: Use clk_hw API for calling clk framework from clk notifiers
	i2c: brcmstb: Allow enabling the driver on DSL SoCs
	NFSv4.x: fix lock recovery during delegation recall
	dmaengine: ioat: fix prototype of ioat_enumerate_channels
	Input: st1232 - set INPUT_PROP_DIRECT property
	Input: silead - try firmware reload after unsuccessful resume
	x86/olpc: Fix build error with CONFIG_MFD_CS5535=m
	crypto: mxs-dcp - Fix SHA null hashes and output length
	crypto: mxs-dcp - Fix AES issues
	ACPI / SBS: Fix rare oops when removing modules
	iwlwifi: mvm: don't send keys when entering D3
	fbdev: sbuslib: use checked version of put_user()
	fbdev: sbuslib: integer overflow in sbusfb_ioctl_helper()
	reset: Fix potential use-after-free in __of_reset_control_get()
	bcache: recal cached_dev_sectors on detach
	s390/kasan: avoid vdso instrumentation
	proc/vmcore: Fix i386 build error of missing copy_oldmem_page_encrypted()
	backlight: lm3639: Unconditionally call led_classdev_unregister
	mfd: ti_am335x_tscadc: Keep ADC interface on if child is wakeup capable
	printk: Give error on attempt to set log buffer length to over 2G
	media: isif: fix a NULL pointer dereference bug
	GFS2: Flush the GFS2 delete workqueue before stopping the kernel threads
	media: cx231xx: fix potential sign-extension overflow on large shift
	x86/kexec: Correct KEXEC_BACKUP_SRC_END off-by-one error
	gpio: syscon: Fix possible NULL ptr usage
	spi: spidev: Fix OF tree warning logic
	ARM: 8802/1: Call syscall_trace_exit even when system call skipped
	orangefs: rate limit the client not running info message
	hwmon: (pwm-fan) Silence error on probe deferral
	hwmon: (ina3221) Fix INA3221_CONFIG_MODE macros
	misc: cxl: Fix possible null pointer dereference
	mac80211: minstrel: fix CCK rate group streams value
	spi: rockchip: initialize dma_slave_config properly
	ARM: dts: omap5: Fix dual-role mode on Super-Speed port
	arm64: uaccess: Ensure PAN is re-enabled after unhandled uaccess fault
	Linux 4.9.203

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-11-25 10:11:00 +01:00
Borislav Petkov
6270cc3754 cpu/SMT: State SMT is disabled even with nosmt and without "=force"
[ Upstream commit d0e7d14455d41163126afecd0fcce935463cc512 ]

When booting with "nosmt=force" a message is issued into dmesg to
confirm that SMT has been force-disabled but such a message is not
issued when only "nosmt" is on the kernel command line.

Fix that.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20181004172227.10094-1-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-25 09:53:32 +01:00
Greg Kroah-Hartman
258971b8e1 Merge 4.9.202 into android-4.9-q
Changes in 4.9.202
	kvm: mmu: Don't read PDPTEs when paging is not enabled
	Bluetooth: hci_ldisc: Postpone HCI_UART_PROTO_READY bit set in hci_uart_set_proto()
	MIPS: BCM63XX: fix switch core reset on BCM6368
	usb: gadget: core: unmap request from DMA only if previously mapped
	KVM: x86: use Intel speculation bugs and features as derived in generic x86 code
	x86/msr: Add the IA32_TSX_CTRL MSR
	x86/cpu: Add a helper function x86_read_arch_cap_msr()
	x86/cpu: Add a "tsx=" cmdline option with TSX disabled by default
	x86/speculation/taa: Add mitigation for TSX Async Abort
	x86/speculation/taa: Add sysfs reporting for TSX Async Abort
	kvm/x86: Export MDS_NO=0 to guests when TSX is enabled
	x86/tsx: Add "auto" option to the tsx= cmdline parameter
	x86/speculation/taa: Add documentation for TSX Async Abort
	x86/tsx: Add config options to set tsx=on|off|auto
	x86/speculation/taa: Fix printing of TAA_MSG_SMT on IBRS_ALL CPUs
	KVM: x86: simplify ept_misconfig
	KVM: x86: extend usage of RET_MMIO_PF_* constants
	kvm: Convert kvm_lock to a mutex
	kvm: x86: Do not release the page inside mmu_set_spte()
	KVM: x86: make FNAME(fetch) and __direct_map more similar
	KVM: x86: remove now unneeded hugepage gfn adjustment
	KVM: x86: change kvm_mmu_page_get_gfn BUG_ON to WARN_ON
	KVM: x86: Add is_executable_pte()
	KVM: x86: add tracepoints around __direct_map and FNAME(fetch)
	KVM: vmx, svm: always run with EFER.NXE=1 when shadow paging is active
	x86/bugs: Add ITLB_MULTIHIT bug infrastructure
	cpu/speculation: Uninline and export CPU mitigations helpers
	kvm: mmu: ITLB_MULTIHIT mitigation
	kvm: Add helper function for creating VM worker threads
	kvm: x86: mmu: Recovery of shattered NX large pages
	Documentation: Add ITLB_MULTIHIT documentation
	Linux 4.9.202

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-11-16 11:05:12 +01:00
Tyler Hicks
e2bd0778ad cpu/speculation: Uninline and export CPU mitigations helpers
commit 731dc9df975a5da21237a18c3384f811a7a41cc6 upstream.

A kernel module may need to check the value of the "mitigations=" kernel
command line parameter as part of its setup when the module needs
to perform software mitigations for a CPU flaw.

Uninline and export the helper functions surrounding the cpu_mitigations
enum to allow for their usage from a module.

Lastly, privatize the enum and cpu_mitigations variable since the value of
cpu_mitigations can be checked with the exported helper functions.

Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-16 10:29:54 +01:00
jianzhou
dd975756e3 Merge android-4.9.185 (70d52cb) into msm-4.9
* refs/heads/tmp-70d52cb:
  Linux 4.9.185
  arm64: kaslr: keep modules inside module region when KASAN is enabled
  dmaengine: imx-sdma: remove BD_INTR for channel0
  MIPS: Add missing EHB in mtc0 -> mfc0 sequence.
  IB/hfi1: Close PSM sdma_progress sleep window
  KVM: LAPIC: Fix pending interrupt in IRR blocked by software disable LAPIC
  arm64, vdso: Define vdso_{start,end} as array
  tty: rocket: fix incorrect forward declaration of 'rp_init()'
  btrfs: Ensure replaced device doesn't have pending chunk allocation
  drm/imx: only send event on crtc disable if kept disabled
  drm/imx: notify drm core before sending event during crtc disable
  lib/mpi: Fix karactx leak in mpi_powm
  ALSA: usb-audio: fix sign unintended sign extension on left shifts
  ALSA: line6: Fix write on zero-sized buffer
  ALSA: firewire-lib/fireworks: fix miss detection of received MIDI messages
  ALSA: seq: fix incorrect order of dest_client/dest_ports arguments
  crypto: user - prevent operating on larval algorithms
  ptrace: Fix ->ptracer_cred handling for PTRACE_TRACEME
  MIPS: Workaround GCC __builtin_unreachable reordering bug
  drm/i915/dmc: protect against reading random memory
  KVM: x86: degrade WARN to pr_warn_ratelimited
  clk: sunxi: fix uninitialized access
  ARC: handle gcc generated __builtin_trap for older compiler
  bug.h: work around GCC PR82365 in BUG()
  ARC: fix allnoconfig build warning
  mfd: omap-usb-tll: Fix register offsets
  MIPS: netlogic: xlr: Remove erroneous check in nlm_fmn_send()
  MIPS: math-emu: do not use bools for arithmetic
  mm/mlock.c: change count_mm_mlocked_page_nr return type
  scripts/decode_stacktrace.sh: prefix addr2line with $CROSS_COMPILE
  scsi: hpsa: correct ioaccel2 chaining
  usb: gadget: udc: lpc32xx: allocate descriptor with GFP_ATOMIC
  usb: gadget: fusb300_udc: Fix memory leak of fusb300->ep[i]
  ASoC: max98090: remove 24-bit format support if RJ is 0
  drm/mediatek: fix unbind functions
  spi: bitbang: Fix NULL pointer dereference in spi_unregister_master
  ASoC: soc-pcm: BE dai needs prepare when pause release after resume
  ASoC : cs4265 : readable register too low
  Bluetooth: Fix faulty expression for minimum encryption key size check
  tipc: pass tunnel dev as NULL to udp_tunnel(6)_xmit_skb
  bpf: udp: ipv6: Avoid running reuseport's bpf_prog from __udp6_lib_err
  bpf: udp: Avoid calling reuseport's bpf_prog from udp_gro
  net: check before dereferencing netdev_ops during busy poll
  ipv4: Use return value of inet_iif() for __raw_v4_lookup in the while loop
  bonding: Always enable vlan tx offload
  team: Always enable vlan tx offload
  tun: wake up waitqueues after IFF_UP is set
  tipc: check msg->req data len in tipc_nl_compat_bearer_disable
  tipc: change to use register_pernet_device
  sctp: change to hold sk after auth shkey is created successfully
  net: stmmac: fixed new system time seconds value calculation
  af_packet: Block execution of tasks waiting for transmit to complete in AF_PACKET
  cpu/speculation: Warn on unsupported mitigations= parameter
  NFS/flexfiles: Use the correct TCP timeout for flexfiles I/O
  x86/speculation: Allow guests to use SSBD even if host does not
  scsi: vmw_pscsi: Fix use-after-free in pvscsi_queue_lck()
  mm/page_idle.c: fix oops because end_pfn is larger than max_pfn
  fs/binfmt_flat.c: make load_flat_shared_library() work
  fs/proc/array.c: allow reporting eip/esp for all coredumping threads
  net/9p: include trans_common.h to fix missing prototype warning.
  9p: p9dirent_read: check network-provided name length
  9p/rdma: remove useless check in cm_event_handler
  9p: acl: fix uninitialized iattr access
  9p/rdma: do not disconnect on down_interruptible EAGAIN
  perf header: Fix unchecked usage of strncpy()
  perf help: Remove needless use of strncpy()
  perf ui helpline: Use strlcpy() as a shorter form of strncpy() + explicit set nul
  IB/hfi1: Avoid hardlockup with flushlist_lock
  mac80211: Do not use stack memory with scatterlist for GMAC
  mac80211: drop robust management frames from unknown TA
  cfg80211: fix memory leak of wiphy device name
  Bluetooth: Fix regression with minimum encryption key size alignment
  Bluetooth: Align minimum encryption key size for LE and BR/EDR connections
  ARM: imx: cpuidle-imx6sx: Restrict the SW2ISO increase to i.MX6SX
  powerpc/bpf: use unsigned division instruction for 64-bit operations
  can: purge socket error queue on sock destruct
  can: flexcan: fix timeout when set small bitrate
  btrfs: start readahead also in seed devices
  nvme: Fix u32 overflow in the number of namespace list calculation
  hwmon: (pmbus/core) Treat parameters as paged if on multiple pages
  s390/qeth: fix VLAN attribute in bridge_hostnotify udev event
  scsi: ufs: Check that space was properly alloced in copy_query_response
  scripts/checkstack.pl: Fix arm64 wrong or unknown architecture
  drm/arm/hdlcd: Allow a bit of clock tolerance
  net: ethernet: mediatek: Use NET_IP_ALIGN to judge if HW RX_2BYTE_OFFSET is enabled
  net: ethernet: mediatek: Use hw_feature to judge if HWLRO is supported
  sparc: perf: fix updated event period in response to PERF_EVENT_IOC_PERIOD
  net: hns: Fix loopback test failed at copper ports
  net: dsa: mv88e6xxx: avoid error message on remove from VLAN 0
  MIPS: uprobes: remove set but not used variable 'epc'
  IB/{qib, hfi1, rdmavt}: Correct ibv_devinfo max_mr value
  IB/hfi1: Insure freeze_work work_struct is canceled on shutdown
  IB/rdmavt: Fix alloc_qpn() WARN_ON()
  parisc: Fix compiler warnings in float emulation code
  parport: Fix mem leak in parport_register_dev_model
  ARC: fix build warnings with !CONFIG_KPROBES
  apparmor: enforce nullbyte at end of tag string
  Input: uinput - add compat ioctl number translation for UI_*_FF_UPLOAD
  IB/hfi1: Silence txreq allocation warnings
  usb: chipidea: udc: workaround for endpoint conflict issue
  scsi: ufs: Avoid runtime suspend possibly being blocked forever
  gcc-9: silence 'address-of-packed-member' warning
  tracing: Silence GCC 9 array bounds warning
  BACKPORT: kheaders: Do not regenerate archive if config is not changed
  BACKPORT: kheaders: Move from proc to sysfs
  BACKPORT: Provide in-kernel headers to make extending kernel easier

Change-Id: I2fc2e9b2019708f0febb754efbf2a63e47ad5b81
Signed-off-by: jianzhou <jianzhou@codeaurora.org>
2019-08-07 16:36:14 +08:00
jianzhou
555bd7ee98 Merge android-4.9.181 (6ccab84) into msm-4.9
* refs/heads/tmp-6ccab84:
  Linux 4.9.181
  ethtool: check the return value of get_regs_len
  ipv4: Define __ipv4_neigh_lookup_noref when CONFIG_INET is disabled
  fuse: Add FOPEN_STREAM to use stream_open()
  fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock
  TTY: serial_core, add ->install
  drm/i915: Fix I915_EXEC_RING_MASK
  drm/radeon: prefer lower reference dividers
  drm/gma500/cdv: Check vbt config bits when detecting lvds panels
  genwqe: Prevent an integer overflow in the ioctl
  Revert "MIPS: perf: ath79: Fix perfcount IRQ assignment"
  MIPS: pistachio: Build uImage.gz by default
  x86/power: Fix 'nosmt' vs hibernation triple fault during resume
  fuse: fallocate: fix return with locked inode
  parisc: Use implicit space register selection for loading the coherence index of I/O pdirs
  rcu: locking and unlocking need to always be at least barriers
  Revert "fib_rules: return 0 directly if an exactly same rule exists when NLM_F_EXCL not supplied"
  Revert "fib_rules: fix error in backport of e9919a24d302 ("fib_rules: return 0...")"
  ipv6: use READ_ONCE() for inet->hdrincl as in ipv4
  ipv6: fix EFAULT on sendto with icmpv6 and hdrincl
  pktgen: do not sleep with the thread lock held.
  net: rds: fix memory leak in rds_ib_flush_mr_pool
  net/mlx4_en: ethtool, Remove unsupported SFP EEPROM high pages query
  neighbor: Call __ipv4_neigh_lookup_noref in neigh_xmit
  ethtool: fix potential userspace buffer overflow
  media: uvcvideo: Fix uvc_alloc_entity() allocation alignment
  efi/libstub: Unify command line param parsing
  Revert "x86/build: Move _etext to actual end of .text"
  mm: make page ref count overflow check tighter and more explicit
  mm: prevent get_user_pages() from overflowing page refcount
  mm, gup: ensure real head page is ref-counted when using hugepages
  mm, gup: remove broken VM_BUG_ON_PAGE compound check for hugepages
  fs: prevent page refcount overflow in pipe_buf_get
  binder: replace "%p" with "%pK"
  binder: Replace "%p" with "%pK" for stable
  brcmfmac: add subtype check for event handling in data path
  brcmfmac: assure SSID length from firmware is limited
  brcmfmac: add length checks in scheduled scan result handler
  drm/vmwgfx: Don't send drm sysfs hotplug events on initial master set
  gcc-plugins: Fix build failures under Darwin host
  CIFS: cifs_read_allocate_pages: don't iterate through whole page array on ENOMEM
  staging: vc04_services: prevent integer overflow in create_pagelist()
  docs: Fix conf.py for Sphinx 2.0
  kernel/signal.c: trace_signal_deliver when signal_group_exit
  memcg: make it work on sparse non-0-node systems
  tty: max310x: Fix external crystal register setup
  tty: serial: msm_serial: Fix XON/XOFF
  drm/nouveau/i2c: Disable i2c bus access after ->fini()
  ALSA: hda/realtek - Set default power save node to 0
  powerpc/perf: Fix MMCRA corruption by bhrb_filter
  Btrfs: fix race updating log root item during fsync
  scsi: zfcp: fix to prevent port_remove with pure auto scan LUNs (only sdevs)
  scsi: zfcp: fix missing zfcp_port reference put on -EBUSY from port_remove
  media: smsusb: better handle optional alignment
  media: usb: siano: Fix false-positive "uninitialized variable" warning
  media: usb: siano: Fix general protection fault in smsusb
  USB: rio500: fix memory leak in close after disconnect
  USB: rio500: refuse more than one device at a time
  USB: Add LPM quirk for Surface Dock GigE adapter
  USB: sisusbvga: fix oops in error path of sisusb_probe
  USB: Fix slab-out-of-bounds write in usb_get_bos_descriptor
  usbip: usbip_host: fix stub_dev lock context imbalance regression
  usbip: usbip_host: fix BUG: sleeping function called from invalid context
  usb: xhci: avoid null pointer deref when bos field is NULL
  xhci: Convert xhci_handshake() to use readl_poll_timeout_atomic()
  xhci: Use %zu for printing size_t type
  xhci: update bounce buffer with correct sg num
  include/linux/bitops.h: sanitize rotate primitives
  sparc64: Fix regression in non-hypervisor TLB flush xcall
  tipc: fix modprobe tipc failed after switch order of device registration
  Revert "tipc: fix modprobe tipc failed after switch order of device registration"
  xen/pciback: Don't disable PCI_COMMAND on PCI device reset.
  crypto: vmx - ghash: do nosimd fallback manually
  net: mvpp2: fix bad MVPP2_TXQ_SCHED_TOKEN_CNTR_REG queue value
  net: mvneta: Fix err code path of probe
  net: dsa: mv88e6xxx: fix handling of upper half of STATS_TYPE_PORT
  ipv4/igmp: fix build error if !CONFIG_IP_MULTICAST
  ipv4/igmp: fix another memory leak in igmpv3_del_delrec()
  bnxt_en: Fix aggregation buffer leak under OOM condition.
  tipc: Avoid copying bytes beyond the supplied data
  usbnet: fix kernel crash after disconnect
  net: stmmac: fix reset gpio free missing
  net-gro: fix use-after-free read in napi_gro_frags()
  net: fec: fix the clk mismatch in failed_reset path
  llc: fix skb leak in llc_build_and_send_ui_pkt()
  ipv6: Consider sk_bound_dev_if when binding a raw socket to an address
  Revert "fib_rules: return 0 directly if an exactly same rule exists when NLM_F_EXCL not supplied"
  Revert "fib_rules: fix error in backport of e9919a24d302 ("fib_rules: return 0...")"
  Revert "x86/build: Move _etext to actual end of .text"

Change-Id: I0a273429558465e31453b6f46f4acc74c97d576a
Signed-off-by: jianzhou <jianzhou@codeaurora.org>
2019-08-07 15:58:44 +08:00
Greg Kroah-Hartman
39eed54804 Merge 4.9.185 into android-4.9-q
Changes in 4.9.185
	tracing: Silence GCC 9 array bounds warning
	gcc-9: silence 'address-of-packed-member' warning
	scsi: ufs: Avoid runtime suspend possibly being blocked forever
	usb: chipidea: udc: workaround for endpoint conflict issue
	IB/hfi1: Silence txreq allocation warnings
	Input: uinput - add compat ioctl number translation for UI_*_FF_UPLOAD
	apparmor: enforce nullbyte at end of tag string
	ARC: fix build warnings with !CONFIG_KPROBES
	parport: Fix mem leak in parport_register_dev_model
	parisc: Fix compiler warnings in float emulation code
	IB/rdmavt: Fix alloc_qpn() WARN_ON()
	IB/hfi1: Insure freeze_work work_struct is canceled on shutdown
	IB/{qib, hfi1, rdmavt}: Correct ibv_devinfo max_mr value
	MIPS: uprobes: remove set but not used variable 'epc'
	net: dsa: mv88e6xxx: avoid error message on remove from VLAN 0
	net: hns: Fix loopback test failed at copper ports
	sparc: perf: fix updated event period in response to PERF_EVENT_IOC_PERIOD
	net: ethernet: mediatek: Use hw_feature to judge if HWLRO is supported
	net: ethernet: mediatek: Use NET_IP_ALIGN to judge if HW RX_2BYTE_OFFSET is enabled
	drm/arm/hdlcd: Allow a bit of clock tolerance
	scripts/checkstack.pl: Fix arm64 wrong or unknown architecture
	scsi: ufs: Check that space was properly alloced in copy_query_response
	s390/qeth: fix VLAN attribute in bridge_hostnotify udev event
	hwmon: (pmbus/core) Treat parameters as paged if on multiple pages
	nvme: Fix u32 overflow in the number of namespace list calculation
	btrfs: start readahead also in seed devices
	can: flexcan: fix timeout when set small bitrate
	can: purge socket error queue on sock destruct
	powerpc/bpf: use unsigned division instruction for 64-bit operations
	ARM: imx: cpuidle-imx6sx: Restrict the SW2ISO increase to i.MX6SX
	Bluetooth: Align minimum encryption key size for LE and BR/EDR connections
	Bluetooth: Fix regression with minimum encryption key size alignment
	cfg80211: fix memory leak of wiphy device name
	mac80211: drop robust management frames from unknown TA
	mac80211: Do not use stack memory with scatterlist for GMAC
	IB/hfi1: Avoid hardlockup with flushlist_lock
	perf ui helpline: Use strlcpy() as a shorter form of strncpy() + explicit set nul
	perf help: Remove needless use of strncpy()
	perf header: Fix unchecked usage of strncpy()
	9p/rdma: do not disconnect on down_interruptible EAGAIN
	9p: acl: fix uninitialized iattr access
	9p/rdma: remove useless check in cm_event_handler
	9p: p9dirent_read: check network-provided name length
	net/9p: include trans_common.h to fix missing prototype warning.
	fs/proc/array.c: allow reporting eip/esp for all coredumping threads
	fs/binfmt_flat.c: make load_flat_shared_library() work
	mm/page_idle.c: fix oops because end_pfn is larger than max_pfn
	scsi: vmw_pscsi: Fix use-after-free in pvscsi_queue_lck()
	x86/speculation: Allow guests to use SSBD even if host does not
	NFS/flexfiles: Use the correct TCP timeout for flexfiles I/O
	cpu/speculation: Warn on unsupported mitigations= parameter
	af_packet: Block execution of tasks waiting for transmit to complete in AF_PACKET
	net: stmmac: fixed new system time seconds value calculation
	sctp: change to hold sk after auth shkey is created successfully
	tipc: change to use register_pernet_device
	tipc: check msg->req data len in tipc_nl_compat_bearer_disable
	tun: wake up waitqueues after IFF_UP is set
	team: Always enable vlan tx offload
	bonding: Always enable vlan tx offload
	ipv4: Use return value of inet_iif() for __raw_v4_lookup in the while loop
	net: check before dereferencing netdev_ops during busy poll
	bpf: udp: Avoid calling reuseport's bpf_prog from udp_gro
	bpf: udp: ipv6: Avoid running reuseport's bpf_prog from __udp6_lib_err
	tipc: pass tunnel dev as NULL to udp_tunnel(6)_xmit_skb
	Bluetooth: Fix faulty expression for minimum encryption key size check
	ASoC : cs4265 : readable register too low
	ASoC: soc-pcm: BE dai needs prepare when pause release after resume
	spi: bitbang: Fix NULL pointer dereference in spi_unregister_master
	drm/mediatek: fix unbind functions
	ASoC: max98090: remove 24-bit format support if RJ is 0
	usb: gadget: fusb300_udc: Fix memory leak of fusb300->ep[i]
	usb: gadget: udc: lpc32xx: allocate descriptor with GFP_ATOMIC
	scsi: hpsa: correct ioaccel2 chaining
	scripts/decode_stacktrace.sh: prefix addr2line with $CROSS_COMPILE
	mm/mlock.c: change count_mm_mlocked_page_nr return type
	MIPS: math-emu: do not use bools for arithmetic
	MIPS: netlogic: xlr: Remove erroneous check in nlm_fmn_send()
	mfd: omap-usb-tll: Fix register offsets
	ARC: fix allnoconfig build warning
	bug.h: work around GCC PR82365 in BUG()
	ARC: handle gcc generated __builtin_trap for older compiler
	clk: sunxi: fix uninitialized access
	KVM: x86: degrade WARN to pr_warn_ratelimited
	drm/i915/dmc: protect against reading random memory
	MIPS: Workaround GCC __builtin_unreachable reordering bug
	ptrace: Fix ->ptracer_cred handling for PTRACE_TRACEME
	crypto: user - prevent operating on larval algorithms
	ALSA: seq: fix incorrect order of dest_client/dest_ports arguments
	ALSA: firewire-lib/fireworks: fix miss detection of received MIDI messages
	ALSA: line6: Fix write on zero-sized buffer
	ALSA: usb-audio: fix sign unintended sign extension on left shifts
	lib/mpi: Fix karactx leak in mpi_powm
	drm/imx: notify drm core before sending event during crtc disable
	drm/imx: only send event on crtc disable if kept disabled
	btrfs: Ensure replaced device doesn't have pending chunk allocation
	tty: rocket: fix incorrect forward declaration of 'rp_init()'
	arm64, vdso: Define vdso_{start,end} as array
	KVM: LAPIC: Fix pending interrupt in IRR blocked by software disable LAPIC
	IB/hfi1: Close PSM sdma_progress sleep window
	MIPS: Add missing EHB in mtc0 -> mfc0 sequence.
	dmaengine: imx-sdma: remove BD_INTR for channel0
	arm64: kaslr: keep modules inside module region when KASAN is enabled
	Linux 4.9.185

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-07-10 12:32:12 +02:00
Greg Kroah-Hartman
70d52cb2bb Merge 4.9.185 into android-4.9
Changes in 4.9.185
	tracing: Silence GCC 9 array bounds warning
	gcc-9: silence 'address-of-packed-member' warning
	scsi: ufs: Avoid runtime suspend possibly being blocked forever
	usb: chipidea: udc: workaround for endpoint conflict issue
	IB/hfi1: Silence txreq allocation warnings
	Input: uinput - add compat ioctl number translation for UI_*_FF_UPLOAD
	apparmor: enforce nullbyte at end of tag string
	ARC: fix build warnings with !CONFIG_KPROBES
	parport: Fix mem leak in parport_register_dev_model
	parisc: Fix compiler warnings in float emulation code
	IB/rdmavt: Fix alloc_qpn() WARN_ON()
	IB/hfi1: Insure freeze_work work_struct is canceled on shutdown
	IB/{qib, hfi1, rdmavt}: Correct ibv_devinfo max_mr value
	MIPS: uprobes: remove set but not used variable 'epc'
	net: dsa: mv88e6xxx: avoid error message on remove from VLAN 0
	net: hns: Fix loopback test failed at copper ports
	sparc: perf: fix updated event period in response to PERF_EVENT_IOC_PERIOD
	net: ethernet: mediatek: Use hw_feature to judge if HWLRO is supported
	net: ethernet: mediatek: Use NET_IP_ALIGN to judge if HW RX_2BYTE_OFFSET is enabled
	drm/arm/hdlcd: Allow a bit of clock tolerance
	scripts/checkstack.pl: Fix arm64 wrong or unknown architecture
	scsi: ufs: Check that space was properly alloced in copy_query_response
	s390/qeth: fix VLAN attribute in bridge_hostnotify udev event
	hwmon: (pmbus/core) Treat parameters as paged if on multiple pages
	nvme: Fix u32 overflow in the number of namespace list calculation
	btrfs: start readahead also in seed devices
	can: flexcan: fix timeout when set small bitrate
	can: purge socket error queue on sock destruct
	powerpc/bpf: use unsigned division instruction for 64-bit operations
	ARM: imx: cpuidle-imx6sx: Restrict the SW2ISO increase to i.MX6SX
	Bluetooth: Align minimum encryption key size for LE and BR/EDR connections
	Bluetooth: Fix regression with minimum encryption key size alignment
	cfg80211: fix memory leak of wiphy device name
	mac80211: drop robust management frames from unknown TA
	mac80211: Do not use stack memory with scatterlist for GMAC
	IB/hfi1: Avoid hardlockup with flushlist_lock
	perf ui helpline: Use strlcpy() as a shorter form of strncpy() + explicit set nul
	perf help: Remove needless use of strncpy()
	perf header: Fix unchecked usage of strncpy()
	9p/rdma: do not disconnect on down_interruptible EAGAIN
	9p: acl: fix uninitialized iattr access
	9p/rdma: remove useless check in cm_event_handler
	9p: p9dirent_read: check network-provided name length
	net/9p: include trans_common.h to fix missing prototype warning.
	fs/proc/array.c: allow reporting eip/esp for all coredumping threads
	fs/binfmt_flat.c: make load_flat_shared_library() work
	mm/page_idle.c: fix oops because end_pfn is larger than max_pfn
	scsi: vmw_pscsi: Fix use-after-free in pvscsi_queue_lck()
	x86/speculation: Allow guests to use SSBD even if host does not
	NFS/flexfiles: Use the correct TCP timeout for flexfiles I/O
	cpu/speculation: Warn on unsupported mitigations= parameter
	af_packet: Block execution of tasks waiting for transmit to complete in AF_PACKET
	net: stmmac: fixed new system time seconds value calculation
	sctp: change to hold sk after auth shkey is created successfully
	tipc: change to use register_pernet_device
	tipc: check msg->req data len in tipc_nl_compat_bearer_disable
	tun: wake up waitqueues after IFF_UP is set
	team: Always enable vlan tx offload
	bonding: Always enable vlan tx offload
	ipv4: Use return value of inet_iif() for __raw_v4_lookup in the while loop
	net: check before dereferencing netdev_ops during busy poll
	bpf: udp: Avoid calling reuseport's bpf_prog from udp_gro
	bpf: udp: ipv6: Avoid running reuseport's bpf_prog from __udp6_lib_err
	tipc: pass tunnel dev as NULL to udp_tunnel(6)_xmit_skb
	Bluetooth: Fix faulty expression for minimum encryption key size check
	ASoC : cs4265 : readable register too low
	ASoC: soc-pcm: BE dai needs prepare when pause release after resume
	spi: bitbang: Fix NULL pointer dereference in spi_unregister_master
	drm/mediatek: fix unbind functions
	ASoC: max98090: remove 24-bit format support if RJ is 0
	usb: gadget: fusb300_udc: Fix memory leak of fusb300->ep[i]
	usb: gadget: udc: lpc32xx: allocate descriptor with GFP_ATOMIC
	scsi: hpsa: correct ioaccel2 chaining
	scripts/decode_stacktrace.sh: prefix addr2line with $CROSS_COMPILE
	mm/mlock.c: change count_mm_mlocked_page_nr return type
	MIPS: math-emu: do not use bools for arithmetic
	MIPS: netlogic: xlr: Remove erroneous check in nlm_fmn_send()
	mfd: omap-usb-tll: Fix register offsets
	ARC: fix allnoconfig build warning
	bug.h: work around GCC PR82365 in BUG()
	ARC: handle gcc generated __builtin_trap for older compiler
	clk: sunxi: fix uninitialized access
	KVM: x86: degrade WARN to pr_warn_ratelimited
	drm/i915/dmc: protect against reading random memory
	MIPS: Workaround GCC __builtin_unreachable reordering bug
	ptrace: Fix ->ptracer_cred handling for PTRACE_TRACEME
	crypto: user - prevent operating on larval algorithms
	ALSA: seq: fix incorrect order of dest_client/dest_ports arguments
	ALSA: firewire-lib/fireworks: fix miss detection of received MIDI messages
	ALSA: line6: Fix write on zero-sized buffer
	ALSA: usb-audio: fix sign unintended sign extension on left shifts
	lib/mpi: Fix karactx leak in mpi_powm
	drm/imx: notify drm core before sending event during crtc disable
	drm/imx: only send event on crtc disable if kept disabled
	btrfs: Ensure replaced device doesn't have pending chunk allocation
	tty: rocket: fix incorrect forward declaration of 'rp_init()'
	arm64, vdso: Define vdso_{start,end} as array
	KVM: LAPIC: Fix pending interrupt in IRR blocked by software disable LAPIC
	IB/hfi1: Close PSM sdma_progress sleep window
	MIPS: Add missing EHB in mtc0 -> mfc0 sequence.
	dmaengine: imx-sdma: remove BD_INTR for channel0
	arm64: kaslr: keep modules inside module region when KASAN is enabled
	Linux 4.9.185

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-07-10 12:11:07 +02:00
Geert Uytterhoeven
0cbb0ae75a cpu/speculation: Warn on unsupported mitigations= parameter
commit 1bf72720281770162c87990697eae1ba2f1d917a upstream.

Currently, if the user specifies an unsupported mitigation strategy on the
kernel command line, it will be ignored silently.  The code will fall back
to the default strategy, possibly leaving the system more vulnerable than
expected.

This may happen due to e.g. a simple typo, or, for a stable kernel release,
because not all mitigation strategies have been backported.

Inform the user by printing a message.

Fixes: 98af8452945c5565 ("cpu/speculation: Add 'mitigations=' cmdline option")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190516070935.22546-1-geert@linux-m68k.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-10 09:55:39 +02:00
jianzhou
4d2fd5d7f3 Merge android-4.9.176 (e0625b3) into msm-4.9
* refs/heads/tmp-e0625b3:
  Linux 4.9.176
  x86/cpu/bugs: Use __initconst for 'const' init data
  x86: stop exporting msr-index.h to userland
  x86/speculation/mds: Fix documentation typo
  Documentation: Correct the possible MDS sysfs values
  x86/mds: Add MDSUM variant to the MDS documentation
  x86/speculation/mds: Add 'mitigations=' support for MDS
  x86/speculation: Support 'mitigations=' cmdline option
  cpu/speculation: Add 'mitigations=' cmdline option
  x86/speculation/mds: Print SMT vulnerable on MSBDS with mitigations off
  x86/speculation/mds: Fix comment
  x86/speculation/mds: Add SMT warning message
  x86/speculation: Move arch_smt_update() call to after mitigation decisions
  x86/speculation/mds: Add mds=full,nosmt cmdline option
  Documentation: Add MDS vulnerability documentation
  Documentation: Move L1TF to separate directory
  x86/speculation/mds: Add mitigation mode VMWERV
  x86/speculation/mds: Add sysfs reporting for MDS
  x86/speculation/mds: Add mitigation control for MDS
  x86/speculation/mds: Conditionally clear CPU buffers on idle entry
  x86/kvm/vmx: Add MDS protection when L1D Flush is not active
  x86/speculation/mds: Clear CPU buffers on exit to user
  x86/speculation/mds: Add mds_clear_cpu_buffers()
  x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests
  x86/speculation/mds: Add BUG_MSBDS_ONLY
  x86/speculation/mds: Add basic bug infrastructure for MDS
  x86/speculation: Consolidate CPU whitelists
  x86/msr-index: Cleanup bit defines
  kvm: x86: Report STIBP on GET_SUPPORTED_CPUID
  x86/speculation: Provide IBPB always command line options
  x86/speculation: Add seccomp Spectre v2 user space protection mode
  x86/speculation: Enable prctl mode for spectre_v2_user
  x86/speculation: Add prctl() control for indirect branch speculation
  x86/speculation: Prevent stale SPEC_CTRL msr content
  x86/speculation: Prepare arch_smt_update() for PRCTL mode
  x86/speculation: Split out TIF update
  x86/speculation: Prepare for conditional IBPB in switch_mm()
  x86/speculation: Avoid __switch_to_xtra() calls
  x86/process: Consolidate and simplify switch_to_xtra() code
  x86/speculation: Prepare for per task indirect branch speculation control
  x86/speculation: Add command line control for indirect branch speculation
  x86/speculation: Unify conditional spectre v2 print functions
  x86/speculataion: Mark command line parser data __initdata
  x86/speculation: Mark string arrays const correctly
  x86/speculation: Reorder the spec_v2 code
  x86/l1tf: Show actual SMT state
  x86/speculation: Rework SMT state change
  sched: Add sched_smt_active()
  x86/Kconfig: Select SCHED_SMT if SMP enabled
  x86/speculation: Reorganize speculation control MSRs update
  x86/speculation: Rename SSBD update functions
  x86/speculation: Disable STIBP when enhanced IBRS is in use
  x86/speculation: Move STIPB/IBPB string conditionals out of cpu_show_common()
  x86/speculation: Remove unnecessary ret variable in cpu_show_common()
  x86/speculation: Clean up spectre_v2_parse_cmdline()
  x86/speculation: Update the TIF_SSBD comment
  x86/speculation/l1tf: Drop the swap storage limit restriction when l1tf=off
  x86/speculation: Propagate information about RSB filling mitigation to sysfs
  x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation
  x86/speculation: Apply IBPB more strictly to avoid cross-process data leak
  Documentation/l1tf: Fix small spelling typo
  x86/cpu: Sanitize FAM6_ATOM naming
  x86/speculation: Remove SPECTRE_V2_IBRS in enum spectre_v2_mitigation
  locking/atomics, asm-generic: Move some macros from <linux/bitops.h> to a new <linux/bits.h> file
  x86/speculation: Simplify the CPU bug detection logic
  bitops: avoid integer overflow in GENMASK(_ULL)
  x86/mm: Use WRITE_ONCE() when setting PTEs
  x86/microcode: Update the new microcode revision unconditionally
  x86/microcode: Make sure boot_cpu_data.microcode is up-to-date
  x86/microcode/intel: Check microcode revision before updating sibling threads
  x86/microcode/intel: Add a helper which gives the microcode revision
  x86/bugs: Fix the AMD SSBD usage of the SPEC_CTRL MSR
  x86/bugs: Switch the selection of mitigation from CPU vendor to CPU features
  x86/bugs: Add AMD's SPEC_CTRL MSR usage
  x86/bugs: Add AMD's variant of SSB_NO
  x86/cpufeatures: Hide AMD-specific speculation flags
  x86/MCE: Save microcode revision in machine check records

Change-Id: Id09a1a4ec13f957e08f5ccf33ff00781d92d3316
Signed-off-by: jianzhou <jianzhou@codeaurora.org>
2019-06-13 14:31:04 +08:00
Greg Kroah-Hartman
77161ce013 Merge 4.9.181 into android-4.9-q
Changes in 4.9.181
	ipv6: Consider sk_bound_dev_if when binding a raw socket to an address
	llc: fix skb leak in llc_build_and_send_ui_pkt()
	net: fec: fix the clk mismatch in failed_reset path
	net-gro: fix use-after-free read in napi_gro_frags()
	net: stmmac: fix reset gpio free missing
	usbnet: fix kernel crash after disconnect
	tipc: Avoid copying bytes beyond the supplied data
	bnxt_en: Fix aggregation buffer leak under OOM condition.
	ipv4/igmp: fix another memory leak in igmpv3_del_delrec()
	ipv4/igmp: fix build error if !CONFIG_IP_MULTICAST
	net: dsa: mv88e6xxx: fix handling of upper half of STATS_TYPE_PORT
	net: mvneta: Fix err code path of probe
	net: mvpp2: fix bad MVPP2_TXQ_SCHED_TOKEN_CNTR_REG queue value
	crypto: vmx - ghash: do nosimd fallback manually
	xen/pciback: Don't disable PCI_COMMAND on PCI device reset.
	Revert "tipc: fix modprobe tipc failed after switch order of device registration"
	tipc: fix modprobe tipc failed after switch order of device registration
	sparc64: Fix regression in non-hypervisor TLB flush xcall
	include/linux/bitops.h: sanitize rotate primitives
	xhci: update bounce buffer with correct sg num
	xhci: Use %zu for printing size_t type
	xhci: Convert xhci_handshake() to use readl_poll_timeout_atomic()
	usb: xhci: avoid null pointer deref when bos field is NULL
	usbip: usbip_host: fix BUG: sleeping function called from invalid context
	usbip: usbip_host: fix stub_dev lock context imbalance regression
	USB: Fix slab-out-of-bounds write in usb_get_bos_descriptor
	USB: sisusbvga: fix oops in error path of sisusb_probe
	USB: Add LPM quirk for Surface Dock GigE adapter
	USB: rio500: refuse more than one device at a time
	USB: rio500: fix memory leak in close after disconnect
	media: usb: siano: Fix general protection fault in smsusb
	media: usb: siano: Fix false-positive "uninitialized variable" warning
	media: smsusb: better handle optional alignment
	scsi: zfcp: fix missing zfcp_port reference put on -EBUSY from port_remove
	scsi: zfcp: fix to prevent port_remove with pure auto scan LUNs (only sdevs)
	Btrfs: fix race updating log root item during fsync
	powerpc/perf: Fix MMCRA corruption by bhrb_filter
	ALSA: hda/realtek - Set default power save node to 0
	drm/nouveau/i2c: Disable i2c bus access after ->fini()
	tty: serial: msm_serial: Fix XON/XOFF
	tty: max310x: Fix external crystal register setup
	memcg: make it work on sparse non-0-node systems
	kernel/signal.c: trace_signal_deliver when signal_group_exit
	docs: Fix conf.py for Sphinx 2.0
	staging: vc04_services: prevent integer overflow in create_pagelist()
	CIFS: cifs_read_allocate_pages: don't iterate through whole page array on ENOMEM
	gcc-plugins: Fix build failures under Darwin host
	drm/vmwgfx: Don't send drm sysfs hotplug events on initial master set
	brcmfmac: add length checks in scheduled scan result handler
	brcmfmac: assure SSID length from firmware is limited
	brcmfmac: add subtype check for event handling in data path
	binder: Replace "%p" with "%pK" for stable
	binder: replace "%p" with "%pK"
	fs: prevent page refcount overflow in pipe_buf_get
	mm, gup: remove broken VM_BUG_ON_PAGE compound check for hugepages
	mm, gup: ensure real head page is ref-counted when using hugepages
	mm: prevent get_user_pages() from overflowing page refcount
	mm: make page ref count overflow check tighter and more explicit
	Revert "x86/build: Move _etext to actual end of .text"
	efi/libstub: Unify command line param parsing
	media: uvcvideo: Fix uvc_alloc_entity() allocation alignment
	ethtool: fix potential userspace buffer overflow
	neighbor: Call __ipv4_neigh_lookup_noref in neigh_xmit
	net/mlx4_en: ethtool, Remove unsupported SFP EEPROM high pages query
	net: rds: fix memory leak in rds_ib_flush_mr_pool
	pktgen: do not sleep with the thread lock held.
	ipv6: fix EFAULT on sendto with icmpv6 and hdrincl
	ipv6: use READ_ONCE() for inet->hdrincl as in ipv4
	Revert "fib_rules: fix error in backport of e9919a24d302 ("fib_rules: return 0...")"
	Revert "fib_rules: return 0 directly if an exactly same rule exists when NLM_F_EXCL not supplied"
	rcu: locking and unlocking need to always be at least barriers
	parisc: Use implicit space register selection for loading the coherence index of I/O pdirs
	fuse: fallocate: fix return with locked inode
	x86/power: Fix 'nosmt' vs hibernation triple fault during resume
	MIPS: pistachio: Build uImage.gz by default
	Revert "MIPS: perf: ath79: Fix perfcount IRQ assignment"
	genwqe: Prevent an integer overflow in the ioctl
	drm/gma500/cdv: Check vbt config bits when detecting lvds panels
	drm/radeon: prefer lower reference dividers
	drm/i915: Fix I915_EXEC_RING_MASK
	TTY: serial_core, add ->install
	fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock
	fuse: Add FOPEN_STREAM to use stream_open()
	ipv4: Define __ipv4_neigh_lookup_noref when CONFIG_INET is disabled
	ethtool: check the return value of get_regs_len
	Linux 4.9.181

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-06-11 14:39:40 +02:00
Greg Kroah-Hartman
6ccab84548 Merge 4.9.181 into android-4.9
Changes in 4.9.181
	ipv6: Consider sk_bound_dev_if when binding a raw socket to an address
	llc: fix skb leak in llc_build_and_send_ui_pkt()
	net: fec: fix the clk mismatch in failed_reset path
	net-gro: fix use-after-free read in napi_gro_frags()
	net: stmmac: fix reset gpio free missing
	usbnet: fix kernel crash after disconnect
	tipc: Avoid copying bytes beyond the supplied data
	bnxt_en: Fix aggregation buffer leak under OOM condition.
	ipv4/igmp: fix another memory leak in igmpv3_del_delrec()
	ipv4/igmp: fix build error if !CONFIG_IP_MULTICAST
	net: dsa: mv88e6xxx: fix handling of upper half of STATS_TYPE_PORT
	net: mvneta: Fix err code path of probe
	net: mvpp2: fix bad MVPP2_TXQ_SCHED_TOKEN_CNTR_REG queue value
	crypto: vmx - ghash: do nosimd fallback manually
	xen/pciback: Don't disable PCI_COMMAND on PCI device reset.
	Revert "tipc: fix modprobe tipc failed after switch order of device registration"
	tipc: fix modprobe tipc failed after switch order of device registration
	sparc64: Fix regression in non-hypervisor TLB flush xcall
	include/linux/bitops.h: sanitize rotate primitives
	xhci: update bounce buffer with correct sg num
	xhci: Use %zu for printing size_t type
	xhci: Convert xhci_handshake() to use readl_poll_timeout_atomic()
	usb: xhci: avoid null pointer deref when bos field is NULL
	usbip: usbip_host: fix BUG: sleeping function called from invalid context
	usbip: usbip_host: fix stub_dev lock context imbalance regression
	USB: Fix slab-out-of-bounds write in usb_get_bos_descriptor
	USB: sisusbvga: fix oops in error path of sisusb_probe
	USB: Add LPM quirk for Surface Dock GigE adapter
	USB: rio500: refuse more than one device at a time
	USB: rio500: fix memory leak in close after disconnect
	media: usb: siano: Fix general protection fault in smsusb
	media: usb: siano: Fix false-positive "uninitialized variable" warning
	media: smsusb: better handle optional alignment
	scsi: zfcp: fix missing zfcp_port reference put on -EBUSY from port_remove
	scsi: zfcp: fix to prevent port_remove with pure auto scan LUNs (only sdevs)
	Btrfs: fix race updating log root item during fsync
	powerpc/perf: Fix MMCRA corruption by bhrb_filter
	ALSA: hda/realtek - Set default power save node to 0
	drm/nouveau/i2c: Disable i2c bus access after ->fini()
	tty: serial: msm_serial: Fix XON/XOFF
	tty: max310x: Fix external crystal register setup
	memcg: make it work on sparse non-0-node systems
	kernel/signal.c: trace_signal_deliver when signal_group_exit
	docs: Fix conf.py for Sphinx 2.0
	staging: vc04_services: prevent integer overflow in create_pagelist()
	CIFS: cifs_read_allocate_pages: don't iterate through whole page array on ENOMEM
	gcc-plugins: Fix build failures under Darwin host
	drm/vmwgfx: Don't send drm sysfs hotplug events on initial master set
	brcmfmac: add length checks in scheduled scan result handler
	brcmfmac: assure SSID length from firmware is limited
	brcmfmac: add subtype check for event handling in data path
	binder: Replace "%p" with "%pK" for stable
	binder: replace "%p" with "%pK"
	fs: prevent page refcount overflow in pipe_buf_get
	mm, gup: remove broken VM_BUG_ON_PAGE compound check for hugepages
	mm, gup: ensure real head page is ref-counted when using hugepages
	mm: prevent get_user_pages() from overflowing page refcount
	mm: make page ref count overflow check tighter and more explicit
	Revert "x86/build: Move _etext to actual end of .text"
	efi/libstub: Unify command line param parsing
	media: uvcvideo: Fix uvc_alloc_entity() allocation alignment
	ethtool: fix potential userspace buffer overflow
	neighbor: Call __ipv4_neigh_lookup_noref in neigh_xmit
	net/mlx4_en: ethtool, Remove unsupported SFP EEPROM high pages query
	net: rds: fix memory leak in rds_ib_flush_mr_pool
	pktgen: do not sleep with the thread lock held.
	ipv6: fix EFAULT on sendto with icmpv6 and hdrincl
	ipv6: use READ_ONCE() for inet->hdrincl as in ipv4
	Revert "fib_rules: fix error in backport of e9919a24d302 ("fib_rules: return 0...")"
	Revert "fib_rules: return 0 directly if an exactly same rule exists when NLM_F_EXCL not supplied"
	rcu: locking and unlocking need to always be at least barriers
	parisc: Use implicit space register selection for loading the coherence index of I/O pdirs
	fuse: fallocate: fix return with locked inode
	x86/power: Fix 'nosmt' vs hibernation triple fault during resume
	MIPS: pistachio: Build uImage.gz by default
	Revert "MIPS: perf: ath79: Fix perfcount IRQ assignment"
	genwqe: Prevent an integer overflow in the ioctl
	drm/gma500/cdv: Check vbt config bits when detecting lvds panels
	drm/radeon: prefer lower reference dividers
	drm/i915: Fix I915_EXEC_RING_MASK
	TTY: serial_core, add ->install
	fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock
	fuse: Add FOPEN_STREAM to use stream_open()
	ipv4: Define __ipv4_neigh_lookup_noref when CONFIG_INET is disabled
	ethtool: check the return value of get_regs_len
	Linux 4.9.181

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-06-11 13:54:30 +02:00
Jiri Kosina
5bdc536ce6 x86/power: Fix 'nosmt' vs hibernation triple fault during resume
commit ec527c318036a65a083ef68d8ba95789d2212246 upstream.

As explained in

	0cc3cd21657b ("cpu/hotplug: Boot HT siblings at least once")

we always, no matter what, have to bring up x86 HT siblings during boot at
least once in order to avoid first MCE bringing the system to its knees.

That means that whenever 'nosmt' is supplied on the kernel command-line,
all the HT siblings are as a result sitting in mwait or cpudile after
going through the online-offline cycle at least once.

This causes a serious issue though when a kernel, which saw 'nosmt' on its
commandline, is going to perform resume from hibernation: if the resume
from the hibernated image is successful, cr3 is flipped in order to point
to the address space of the kernel that is being resumed, which in turn
means that all the HT siblings are all of a sudden mwaiting on address
which is no longer valid.

That results in triple fault shortly after cr3 is switched, and machine
reboots.

Fix this by always waking up all the SMT siblings before initiating the
'restore from hibernation' process; this guarantees that all the HT
siblings will be properly carried over to the resumed kernel waiting in
resume_play_dead(), and acted upon accordingly afterwards, based on the
target kernel configuration.

Symmetricaly, the resumed kernel has to push the SMT siblings to mwait
again in case it has SMT disabled; this means it has to online all
the siblings when resuming (so that they come out of hlt) and offline
them again to let them reach mwait.

Cc: 4.19+ <stable@vger.kernel.org> # v4.19+
Debugged-by: Thomas Gleixner <tglx@linutronix.de>
Fixes: 0cc3cd21657b ("cpu/hotplug: Boot HT siblings at least once")
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-11 12:22:48 +02:00
jianzhou
d64b2c0140 Merge android-4.9.167 (e1a8bab) into msm-4.9
* refs/heads/tmp-e1a8bab:
  Linux 4.9.167
  arm64: support keyctl() system call in 32-bit mode
  Revert "USB: core: only clean up what we allocated"
  xhci: Fix port resume done detection for SS ports with LPM enabled
  USB: gadget: f_hid: fix deadlock in f_hidg_write()
  KVM: x86: Emulate MSR_IA32_ARCH_CAPABILITIES on AMD hosts
  KVM: Reject device ioctls from processes other than the VM's creator
  x86/smp: Enforce CONFIG_HOTPLUG_CPU when SMP=y
  cpu/hotplug: Prevent crash when CPU bringup fails on CONFIG_HOTPLUG_CPU=n
  perf intel-pt: Fix TSC slip
  usb: host: xhci-rcar: Add XHCI_TRUST_TX_LENGTH quirk
  usb: common: Consider only available nodes for dr_mode
  gpio: adnp: Fix testing wrong value in adnp_gpio_direction_input
  fs/proc/proc_sysctl.c: fix NULL pointer dereference in put_links
  Disable kgdboc failed by echo space to /sys/module/kgdboc/parameters/kgdboc
  USB: serial: option: add Olicard 600
  USB: serial: option: set driver_info for SIM5218 and compatibles
  USB: serial: mos7720: fix mos_parport refcount imbalance on error path
  USB: serial: ftdi_sio: add additional NovaTech products
  USB: serial: cp210x: add new device id
  serial: sh-sci: Fix setting SCSCR_TIE while transferring data
  serial: max310x: Fix to avoid potential NULL pointer dereference
  staging: vt6655: Fix interrupt race condition on device start up.
  staging: vt6655: Remove vif check from vnt_interrupt
  staging: comedi: ni_mio_common: Fix divide-by-zero for DIO cmdtest
  tty: atmel_serial: fix a potential NULL pointer dereference
  scsi: zfcp: fix scsi_eh host reset with port_forced ERP for non-NPIV FCP devices
  scsi: zfcp: fix rport unblock if deleted SCSI devices on Scsi_Host
  scsi: sd: Quiesce warning if device does not report optimal I/O size
  scsi: sd: Fix a race between closing an sd device and sd I/O
  fs/open.c: allow opening only regular files during execve()
  ALSA: pcm: Don't suspend stream in unrecoverable PCM state
  ALSA: pcm: Fix possible OOB access in PCM oss plugins
  ALSA: seq: oss: Fix Spectre v1 vulnerability
  ALSA: rawmidi: Fix potential Spectre v1 vulnerability
  net: dsa: qca8k: remove leftover phy accessors
  NFSv4.1 don't free interrupted slot on open
  powerpc: bpf: Fix generation of load/store DW instructions
  ARM: imx6q: cpuidle: fix bug that CPU might not wake up at expected time
  btrfs: raid56: properly unmap parity page in finish_parity_scrub()
  btrfs: remove WARN_ON in log_dir_items
  tun: add a missing rcu_read_unlock() in error path
  tun: properly test for IFF_UP
  mac8390: Fix mmio access size probe
  sctp: get sctphdr by offset in sctp_compute_cksum
  vxlan: Don't call gro_cells_destroy() before device is unregistered
  tcp: do not use ipv6 header for ipv4 flow
  packets: Always register packet sk in the same order
  net: rose: fix a possible stack overflow
  net/packet: Set __GFP_NOWARN upon allocation in alloc_pg_vec
  mISDN: hfcpci: Test both vendor & device ID for Digium HFC4S
  dccp: do not use ipv6 header for ipv4 flow
  stmmac: copy unicast mac address to MAC registers
  cfg80211: size various nl80211 messages correctly
  video: fbdev: Set pixclock = 0 in goldfishfb
  Bluetooth: Verify that l2cap_get_conf_opt provides large enough buffer
  Bluetooth: Check L2CAP option sizes returned from l2cap_get_conf_opt
  UPSTREAM: virt_wifi: Remove REGULATORY_WIPHY_SELF_MANAGED

Conflicts:
	net/wireless/nl80211.c

Change-Id: I85dbbad9c803c44c5d584869a2e790e24b73db6f
Signed-off-by: jianzhou <jianzhou@codeaurora.org>
2019-05-23 15:15:16 +08:00
Greg Kroah-Hartman
ef4a576d4b Merge 4.9.176 into android-4.9-q
Changes in 4.9.176
	x86/MCE: Save microcode revision in machine check records
	x86/cpufeatures: Hide AMD-specific speculation flags
	x86/bugs: Add AMD's variant of SSB_NO
	x86/bugs: Add AMD's SPEC_CTRL MSR usage
	x86/bugs: Switch the selection of mitigation from CPU vendor to CPU features
	x86/bugs: Fix the AMD SSBD usage of the SPEC_CTRL MSR
	x86/microcode/intel: Add a helper which gives the microcode revision
	x86/microcode/intel: Check microcode revision before updating sibling threads
	x86/microcode: Make sure boot_cpu_data.microcode is up-to-date
	x86/microcode: Update the new microcode revision unconditionally
	x86/mm: Use WRITE_ONCE() when setting PTEs
	bitops: avoid integer overflow in GENMASK(_ULL)
	x86/speculation: Simplify the CPU bug detection logic
	locking/atomics, asm-generic: Move some macros from <linux/bitops.h> to a new <linux/bits.h> file
	x86/speculation: Remove SPECTRE_V2_IBRS in enum spectre_v2_mitigation
	x86/cpu: Sanitize FAM6_ATOM naming
	Documentation/l1tf: Fix small spelling typo
	x86/speculation: Apply IBPB more strictly to avoid cross-process data leak
	x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation
	x86/speculation: Propagate information about RSB filling mitigation to sysfs
	x86/speculation/l1tf: Drop the swap storage limit restriction when l1tf=off
	x86/speculation: Update the TIF_SSBD comment
	x86/speculation: Clean up spectre_v2_parse_cmdline()
	x86/speculation: Remove unnecessary ret variable in cpu_show_common()
	x86/speculation: Move STIPB/IBPB string conditionals out of cpu_show_common()
	x86/speculation: Disable STIBP when enhanced IBRS is in use
	x86/speculation: Rename SSBD update functions
	x86/speculation: Reorganize speculation control MSRs update
	x86/Kconfig: Select SCHED_SMT if SMP enabled
	sched: Add sched_smt_active()
	x86/speculation: Rework SMT state change
	x86/l1tf: Show actual SMT state
	x86/speculation: Reorder the spec_v2 code
	x86/speculation: Mark string arrays const correctly
	x86/speculataion: Mark command line parser data __initdata
	x86/speculation: Unify conditional spectre v2 print functions
	x86/speculation: Add command line control for indirect branch speculation
	x86/speculation: Prepare for per task indirect branch speculation control
	x86/process: Consolidate and simplify switch_to_xtra() code
	x86/speculation: Avoid __switch_to_xtra() calls
	x86/speculation: Prepare for conditional IBPB in switch_mm()
	x86/speculation: Split out TIF update
	x86/speculation: Prepare arch_smt_update() for PRCTL mode
	x86/speculation: Prevent stale SPEC_CTRL msr content
	x86/speculation: Add prctl() control for indirect branch speculation
	x86/speculation: Enable prctl mode for spectre_v2_user
	x86/speculation: Add seccomp Spectre v2 user space protection mode
	x86/speculation: Provide IBPB always command line options
	kvm: x86: Report STIBP on GET_SUPPORTED_CPUID
	x86/msr-index: Cleanup bit defines
	x86/speculation: Consolidate CPU whitelists
	x86/speculation/mds: Add basic bug infrastructure for MDS
	x86/speculation/mds: Add BUG_MSBDS_ONLY
	x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests
	x86/speculation/mds: Add mds_clear_cpu_buffers()
	x86/speculation/mds: Clear CPU buffers on exit to user
	x86/kvm/vmx: Add MDS protection when L1D Flush is not active
	x86/speculation/mds: Conditionally clear CPU buffers on idle entry
	x86/speculation/mds: Add mitigation control for MDS
	x86/speculation/mds: Add sysfs reporting for MDS
	x86/speculation/mds: Add mitigation mode VMWERV
	Documentation: Move L1TF to separate directory
	Documentation: Add MDS vulnerability documentation
	x86/speculation/mds: Add mds=full,nosmt cmdline option
	x86/speculation: Move arch_smt_update() call to after mitigation decisions
	x86/speculation/mds: Add SMT warning message
	x86/speculation/mds: Fix comment
	x86/speculation/mds: Print SMT vulnerable on MSBDS with mitigations off
	cpu/speculation: Add 'mitigations=' cmdline option
	x86/speculation: Support 'mitigations=' cmdline option
	x86/speculation/mds: Add 'mitigations=' support for MDS
	x86/mds: Add MDSUM variant to the MDS documentation
	Documentation: Correct the possible MDS sysfs values
	x86/speculation/mds: Fix documentation typo
	x86: stop exporting msr-index.h to userland
	x86/cpu/bugs: Use __initconst for 'const' init data
	Linux 4.9.176

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-05-14 21:04:42 +02:00
Greg Kroah-Hartman
e0625b31fd Merge 4.9.176 into android-4.9
Changes in 4.9.176
	x86/MCE: Save microcode revision in machine check records
	x86/cpufeatures: Hide AMD-specific speculation flags
	x86/bugs: Add AMD's variant of SSB_NO
	x86/bugs: Add AMD's SPEC_CTRL MSR usage
	x86/bugs: Switch the selection of mitigation from CPU vendor to CPU features
	x86/bugs: Fix the AMD SSBD usage of the SPEC_CTRL MSR
	x86/microcode/intel: Add a helper which gives the microcode revision
	x86/microcode/intel: Check microcode revision before updating sibling threads
	x86/microcode: Make sure boot_cpu_data.microcode is up-to-date
	x86/microcode: Update the new microcode revision unconditionally
	x86/mm: Use WRITE_ONCE() when setting PTEs
	bitops: avoid integer overflow in GENMASK(_ULL)
	x86/speculation: Simplify the CPU bug detection logic
	locking/atomics, asm-generic: Move some macros from <linux/bitops.h> to a new <linux/bits.h> file
	x86/speculation: Remove SPECTRE_V2_IBRS in enum spectre_v2_mitigation
	x86/cpu: Sanitize FAM6_ATOM naming
	Documentation/l1tf: Fix small spelling typo
	x86/speculation: Apply IBPB more strictly to avoid cross-process data leak
	x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation
	x86/speculation: Propagate information about RSB filling mitigation to sysfs
	x86/speculation/l1tf: Drop the swap storage limit restriction when l1tf=off
	x86/speculation: Update the TIF_SSBD comment
	x86/speculation: Clean up spectre_v2_parse_cmdline()
	x86/speculation: Remove unnecessary ret variable in cpu_show_common()
	x86/speculation: Move STIPB/IBPB string conditionals out of cpu_show_common()
	x86/speculation: Disable STIBP when enhanced IBRS is in use
	x86/speculation: Rename SSBD update functions
	x86/speculation: Reorganize speculation control MSRs update
	x86/Kconfig: Select SCHED_SMT if SMP enabled
	sched: Add sched_smt_active()
	x86/speculation: Rework SMT state change
	x86/l1tf: Show actual SMT state
	x86/speculation: Reorder the spec_v2 code
	x86/speculation: Mark string arrays const correctly
	x86/speculataion: Mark command line parser data __initdata
	x86/speculation: Unify conditional spectre v2 print functions
	x86/speculation: Add command line control for indirect branch speculation
	x86/speculation: Prepare for per task indirect branch speculation control
	x86/process: Consolidate and simplify switch_to_xtra() code
	x86/speculation: Avoid __switch_to_xtra() calls
	x86/speculation: Prepare for conditional IBPB in switch_mm()
	x86/speculation: Split out TIF update
	x86/speculation: Prepare arch_smt_update() for PRCTL mode
	x86/speculation: Prevent stale SPEC_CTRL msr content
	x86/speculation: Add prctl() control for indirect branch speculation
	x86/speculation: Enable prctl mode for spectre_v2_user
	x86/speculation: Add seccomp Spectre v2 user space protection mode
	x86/speculation: Provide IBPB always command line options
	kvm: x86: Report STIBP on GET_SUPPORTED_CPUID
	x86/msr-index: Cleanup bit defines
	x86/speculation: Consolidate CPU whitelists
	x86/speculation/mds: Add basic bug infrastructure for MDS
	x86/speculation/mds: Add BUG_MSBDS_ONLY
	x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests
	x86/speculation/mds: Add mds_clear_cpu_buffers()
	x86/speculation/mds: Clear CPU buffers on exit to user
	x86/kvm/vmx: Add MDS protection when L1D Flush is not active
	x86/speculation/mds: Conditionally clear CPU buffers on idle entry
	x86/speculation/mds: Add mitigation control for MDS
	x86/speculation/mds: Add sysfs reporting for MDS
	x86/speculation/mds: Add mitigation mode VMWERV
	Documentation: Move L1TF to separate directory
	Documentation: Add MDS vulnerability documentation
	x86/speculation/mds: Add mds=full,nosmt cmdline option
	x86/speculation: Move arch_smt_update() call to after mitigation decisions
	x86/speculation/mds: Add SMT warning message
	x86/speculation/mds: Fix comment
	x86/speculation/mds: Print SMT vulnerable on MSBDS with mitigations off
	cpu/speculation: Add 'mitigations=' cmdline option
	x86/speculation: Support 'mitigations=' cmdline option
	x86/speculation/mds: Add 'mitigations=' support for MDS
	x86/mds: Add MDSUM variant to the MDS documentation
	Documentation: Correct the possible MDS sysfs values
	x86/speculation/mds: Fix documentation typo
	x86: stop exporting msr-index.h to userland
	x86/cpu/bugs: Use __initconst for 'const' init data
	Linux 4.9.176

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-05-14 20:43:04 +02:00
Josh Poimboeuf
edda9c3893 cpu/speculation: Add 'mitigations=' cmdline option
commit 98af8452945c55652de68536afdde3b520fec429 upstream.

Keeping track of the number of mitigations for all the CPU speculation
bugs has become overwhelming for many users.  It's getting more and more
complicated to decide which mitigations are needed for a given
architecture.  Complicating matters is the fact that each arch tends to
have its own custom way to mitigate the same vulnerability.

Most users fall into a few basic categories:

a) they want all mitigations off;

b) they want all reasonable mitigations on, with SMT enabled even if
   it's vulnerable; or

c) they want all reasonable mitigations on, with SMT disabled if
   vulnerable.

Define a set of curated, arch-independent options, each of which is an
aggregation of existing options:

- mitigations=off: Disable all mitigations.

- mitigations=auto: [default] Enable all the default mitigations, but
  leave SMT enabled, even if it's vulnerable.

- mitigations=auto,nosmt: Enable all the default mitigations, disabling
  SMT if needed by a mitigation.

Currently, these options are placeholders which don't actually do
anything.  They will be fleshed out in upcoming patches.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Jiri Kosina <jkosina@suse.cz> (on x86)
Reviewed-by: Jiri Kosina <jkosina@suse.cz>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux-s390@vger.kernel.org
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arch@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Tyler Hicks <tyhicks@canonical.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Steven Price <steven.price@arm.com>
Cc: Phil Auld <pauld@redhat.com>
Link: https://lkml.kernel.org/r/b07a8ef9b7c5055c3a4637c87d07c296d5016fe0.1555085500.git.jpoimboe@redhat.com
[bwh: Backported to 4.9: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-14 19:19:41 +02:00
Thomas Gleixner
a3c901bfdb x86/speculation: Rework SMT state change
commit a74cfffb03b73d41e08f84c2e5c87dec0ce3db9f upstream.

arch_smt_update() is only called when the sysfs SMT control knob is
changed. This means that when SMT is enabled in the sysfs control knob the
system is considered to have SMT active even if all siblings are offline.

To allow finegrained control of the speculation mitigations, the actual SMT
state is more interesting than the fact that siblings could be enabled.

Rework the code, so arch_smt_update() is invoked from each individual CPU
hotplug function, and simplify the update function while at it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20181125185004.521974984@linutronix.de
[bwh: Backported to 4.9: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-14 19:19:36 +02:00
Jiri Kosina
b410c57f49 x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation
commit 53c613fe6349994f023245519265999eed75957f upstream.

STIBP is a feature provided by certain Intel ucodes / CPUs. This feature
(once enabled) prevents cross-hyperthread control of decisions made by
indirect branch predictors.

Enable this feature if

- the CPU is vulnerable to spectre v2
- the CPU supports SMT and has SMT siblings online
- spectre_v2 mitigation autoselection is enabled (default)

After some previous discussion, this leaves STIBP on all the time, as wrmsr
on crossing kernel boundary is a no-no. This could perhaps later be a bit
more optimized (like disabling it in NOHZ, experiment with disabling it in
idle, etc) if needed.

Note that the synchronization of the mask manipulation via newly added
spec_ctrl_mutex is currently not strictly needed, as the only updater is
already being serialized by cpu_add_remove_lock, but let's make this a
little bit more future-proof.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc:  "WoodhouseDavid" <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc:  "SchauflerCasey" <casey.schaufler@intel.com>
Link: https://lkml.kernel.org/r/nycvar.YFH.7.76.1809251438240.15880@cbobk.fhfr.pm
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-14 19:19:34 +02:00
Greg Kroah-Hartman
6947310120 Merge 4.9.167 into android-4.9-q
Changes in 4.9.167
	Bluetooth: Check L2CAP option sizes returned from l2cap_get_conf_opt
	Bluetooth: Verify that l2cap_get_conf_opt provides large enough buffer
	video: fbdev: Set pixclock = 0 in goldfishfb
	cfg80211: size various nl80211 messages correctly
	stmmac: copy unicast mac address to MAC registers
	dccp: do not use ipv6 header for ipv4 flow
	mISDN: hfcpci: Test both vendor & device ID for Digium HFC4S
	net/packet: Set __GFP_NOWARN upon allocation in alloc_pg_vec
	net: rose: fix a possible stack overflow
	packets: Always register packet sk in the same order
	tcp: do not use ipv6 header for ipv4 flow
	vxlan: Don't call gro_cells_destroy() before device is unregistered
	sctp: get sctphdr by offset in sctp_compute_cksum
	mac8390: Fix mmio access size probe
	tun: properly test for IFF_UP
	tun: add a missing rcu_read_unlock() in error path
	btrfs: remove WARN_ON in log_dir_items
	btrfs: raid56: properly unmap parity page in finish_parity_scrub()
	ARM: imx6q: cpuidle: fix bug that CPU might not wake up at expected time
	powerpc: bpf: Fix generation of load/store DW instructions
	NFSv4.1 don't free interrupted slot on open
	net: dsa: qca8k: remove leftover phy accessors
	ALSA: rawmidi: Fix potential Spectre v1 vulnerability
	ALSA: seq: oss: Fix Spectre v1 vulnerability
	ALSA: pcm: Fix possible OOB access in PCM oss plugins
	ALSA: pcm: Don't suspend stream in unrecoverable PCM state
	fs/open.c: allow opening only regular files during execve()
	scsi: sd: Fix a race between closing an sd device and sd I/O
	scsi: sd: Quiesce warning if device does not report optimal I/O size
	scsi: zfcp: fix rport unblock if deleted SCSI devices on Scsi_Host
	scsi: zfcp: fix scsi_eh host reset with port_forced ERP for non-NPIV FCP devices
	tty: atmel_serial: fix a potential NULL pointer dereference
	staging: comedi: ni_mio_common: Fix divide-by-zero for DIO cmdtest
	staging: vt6655: Remove vif check from vnt_interrupt
	staging: vt6655: Fix interrupt race condition on device start up.
	serial: max310x: Fix to avoid potential NULL pointer dereference
	serial: sh-sci: Fix setting SCSCR_TIE while transferring data
	USB: serial: cp210x: add new device id
	USB: serial: ftdi_sio: add additional NovaTech products
	USB: serial: mos7720: fix mos_parport refcount imbalance on error path
	USB: serial: option: set driver_info for SIM5218 and compatibles
	USB: serial: option: add Olicard 600
	Disable kgdboc failed by echo space to /sys/module/kgdboc/parameters/kgdboc
	fs/proc/proc_sysctl.c: fix NULL pointer dereference in put_links
	gpio: adnp: Fix testing wrong value in adnp_gpio_direction_input
	usb: common: Consider only available nodes for dr_mode
	usb: host: xhci-rcar: Add XHCI_TRUST_TX_LENGTH quirk
	perf intel-pt: Fix TSC slip
	cpu/hotplug: Prevent crash when CPU bringup fails on CONFIG_HOTPLUG_CPU=n
	x86/smp: Enforce CONFIG_HOTPLUG_CPU when SMP=y
	KVM: Reject device ioctls from processes other than the VM's creator
	KVM: x86: Emulate MSR_IA32_ARCH_CAPABILITIES on AMD hosts
	USB: gadget: f_hid: fix deadlock in f_hidg_write()
	xhci: Fix port resume done detection for SS ports with LPM enabled
	Revert "USB: core: only clean up what we allocated"
	arm64: support keyctl() system call in 32-bit mode
	Linux 4.9.167

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-04-03 07:33:30 +02:00
Greg Kroah-Hartman
e1a8babe92 Merge 4.9.167 into android-4.9
Changes in 4.9.167
	Bluetooth: Check L2CAP option sizes returned from l2cap_get_conf_opt
	Bluetooth: Verify that l2cap_get_conf_opt provides large enough buffer
	video: fbdev: Set pixclock = 0 in goldfishfb
	cfg80211: size various nl80211 messages correctly
	stmmac: copy unicast mac address to MAC registers
	dccp: do not use ipv6 header for ipv4 flow
	mISDN: hfcpci: Test both vendor & device ID for Digium HFC4S
	net/packet: Set __GFP_NOWARN upon allocation in alloc_pg_vec
	net: rose: fix a possible stack overflow
	packets: Always register packet sk in the same order
	tcp: do not use ipv6 header for ipv4 flow
	vxlan: Don't call gro_cells_destroy() before device is unregistered
	sctp: get sctphdr by offset in sctp_compute_cksum
	mac8390: Fix mmio access size probe
	tun: properly test for IFF_UP
	tun: add a missing rcu_read_unlock() in error path
	btrfs: remove WARN_ON in log_dir_items
	btrfs: raid56: properly unmap parity page in finish_parity_scrub()
	ARM: imx6q: cpuidle: fix bug that CPU might not wake up at expected time
	powerpc: bpf: Fix generation of load/store DW instructions
	NFSv4.1 don't free interrupted slot on open
	net: dsa: qca8k: remove leftover phy accessors
	ALSA: rawmidi: Fix potential Spectre v1 vulnerability
	ALSA: seq: oss: Fix Spectre v1 vulnerability
	ALSA: pcm: Fix possible OOB access in PCM oss plugins
	ALSA: pcm: Don't suspend stream in unrecoverable PCM state
	fs/open.c: allow opening only regular files during execve()
	scsi: sd: Fix a race between closing an sd device and sd I/O
	scsi: sd: Quiesce warning if device does not report optimal I/O size
	scsi: zfcp: fix rport unblock if deleted SCSI devices on Scsi_Host
	scsi: zfcp: fix scsi_eh host reset with port_forced ERP for non-NPIV FCP devices
	tty: atmel_serial: fix a potential NULL pointer dereference
	staging: comedi: ni_mio_common: Fix divide-by-zero for DIO cmdtest
	staging: vt6655: Remove vif check from vnt_interrupt
	staging: vt6655: Fix interrupt race condition on device start up.
	serial: max310x: Fix to avoid potential NULL pointer dereference
	serial: sh-sci: Fix setting SCSCR_TIE while transferring data
	USB: serial: cp210x: add new device id
	USB: serial: ftdi_sio: add additional NovaTech products
	USB: serial: mos7720: fix mos_parport refcount imbalance on error path
	USB: serial: option: set driver_info for SIM5218 and compatibles
	USB: serial: option: add Olicard 600
	Disable kgdboc failed by echo space to /sys/module/kgdboc/parameters/kgdboc
	fs/proc/proc_sysctl.c: fix NULL pointer dereference in put_links
	gpio: adnp: Fix testing wrong value in adnp_gpio_direction_input
	usb: common: Consider only available nodes for dr_mode
	usb: host: xhci-rcar: Add XHCI_TRUST_TX_LENGTH quirk
	perf intel-pt: Fix TSC slip
	cpu/hotplug: Prevent crash when CPU bringup fails on CONFIG_HOTPLUG_CPU=n
	x86/smp: Enforce CONFIG_HOTPLUG_CPU when SMP=y
	KVM: Reject device ioctls from processes other than the VM's creator
	KVM: x86: Emulate MSR_IA32_ARCH_CAPABILITIES on AMD hosts
	USB: gadget: f_hid: fix deadlock in f_hidg_write()
	xhci: Fix port resume done detection for SS ports with LPM enabled
	Revert "USB: core: only clean up what we allocated"
	arm64: support keyctl() system call in 32-bit mode
	Linux 4.9.167

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-04-03 07:29:40 +02:00
Thomas Gleixner
ce4fbb9f4e cpu/hotplug: Prevent crash when CPU bringup fails on CONFIG_HOTPLUG_CPU=n
commit 206b92353c839c0b27a0b9bec24195f93fd6cf7a upstream.

Tianyu reported a crash in a CPU hotplug teardown callback when booting a
kernel which has CONFIG_HOTPLUG_CPU disabled with the 'nosmt' boot
parameter.

It turns out that the SMP=y CONFIG_HOTPLUG_CPU=n case has been broken
forever in case that a bringup callback fails. Unfortunately this issue was
not recognized when the CPU hotplug code was reworked, so the shortcoming
just stayed in place.

When a bringup callback fails, the CPU hotplug code rolls back the
operation and takes the CPU offline.

The 'nosmt' command line argument uses a bringup failure to abort the
bringup of SMT sibling CPUs. This partial bringup is required due to the
MCE misdesign on Intel CPUs.

With CONFIG_HOTPLUG_CPU=y the rollback works perfectly fine, but
CONFIG_HOTPLUG_CPU=n lacks essential mechanisms to exercise the low level
teardown of a CPU including the synchronizations in various facilities like
RCU, NOHZ and others.

As a consequence the teardown callbacks which must be executed on the
outgoing CPU within stop machine with interrupts disabled are executed on
the control CPU in interrupt enabled and preemptible context causing the
kernel to crash and burn. The pre state machine code has a different
failure mode which is more subtle and resulting in a less obvious use after
free crash because the control side frees resources which are still in use
by the undead CPU.

But this is not a x86 only problem. Any architecture which supports the
SMP=y HOTPLUG_CPU=n combination suffers from the same issue. It's just less
likely to be triggered because in 99.99999% of the cases all bringup
callbacks succeed.

The easy solution of making HOTPLUG_CPU mandatory for SMP is not working on
all architectures as the following architectures have either no hotplug
support at all or not all subarchitectures support it:

 alpha, arc, hexagon, openrisc, riscv, sparc (32bit), mips (partial).

Crashing the kernel in such a situation is not an acceptable state
either.

Implement a minimal rollback variant by limiting the teardown to the point
where all regular teardown callbacks have been invoked and leave the CPU in
the 'dead' idle state. This has the following consequences:

 - the CPU is brought down to the point where the stop_machine takedown
   would happen.

 - the CPU stays there forever and is idle

 - The CPU is cleared in the CPU active mask, but not in the CPU online
   mask which is a legit state.

 - Interrupts are not forced away from the CPU

 - All facilities which only look at online mask would still see it, but
   that is the case during normal hotplug/unplug operations as well. It's
   just a (way) longer time frame.

This will expose issues, which haven't been exposed before or only seldom,
because now the normally transient state of being non active but online is
a permanent state. In testing this exposed already an issue vs. work queues
where the vmstat code schedules work on the almost dead CPU which ends up
in an unbound workqueue and triggers 'preemtible context' warnings. This is
not a problem of this change, it merily exposes an already existing issue.
Still this is better than crashing fully without a chance to debug it.

This is mainly thought as workaround for those architectures which do not
support HOTPLUG_CPU. All others should enforce HOTPLUG_CPU for SMP.

Fixes: 2e1a3483ce ("cpu/hotplug: Split out the state walk into functions")
Reported-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Konrad Wilk <konrad.wilk@oracle.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Mukesh Ojha <mojha@codeaurora.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Rik van Riel <riel@surriel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Micheal Kelley <michael.h.kelley@microsoft.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190326163811.503390616@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-03 06:24:19 +02:00
Raghavendra Rao Ananta
595428cacd perf: Manage CPU hotplug events at core level
Currently, the perf's hotplug management is split between the
core and the PMU driver. That is, the PMU driver is responsible
for starting and stopping the perf-event counter in the cases
where the CPU is coming up and going down, respectively. However,
this approach is not scalable for the growing number of PMU drivers.
Moreover, due to partial cleanup at the perf-core, currently the
perf-events are prone to race conditions, for example between the
CPU hotplug teardown callback (perf_event_exit_cpu()) and the hrtimer
handler (perf_mux_hrtimer_handler()) that's used for multiplexing
the events.

Hence, the approach here is to achieve the hotplug management
at the perf-core level. The idea is to detach the event from the
context (perf_remove_from_context()), when the CPU is about to come
down and re-attach it back (perf_install_in_context()), when the CPU
comes back online.

The approach involves removing the logic for maintaining zombie
events (PERF_EVENT_STATE_ZOMBIE) and let the dormant list itself
carry the events whose CPUs are offline.

Change-Id: I39503d1f4b0b3937920b666a4f04875162fad3b3
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
2019-01-21 01:59:52 -08:00
Raghavendra Rao Ananta
c14a51f5ed perf: Fix warning during perf core init
The warning was generated due to the cpu hotplug state
conflict for CPUHP_AP_PERF_ONLINE. The original idea was
to replace the perf_event_init_cpu with perf_event_start_swevents.
The fix replaces the callback in cpu.c and removes the registration
in the perf core.

Change-Id: I5cb20de38b39f3035fa98977b9c280bb20521d28
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
2019-01-18 00:20:52 -08:00
Greg Kroah-Hartman
f44ed2c923 Merge 4.9.140 into android-4.9
Changes in 4.9.140
	Revert "x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation"
	Revert "ipv6: set rt6i_protocol properly in the route when it is installed"
	Linux 4.9.140

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-11-23 14:12:57 +01:00
Greg Kroah-Hartman
0afb423b1d Revert "x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation"
This reverts commit 66fe51cb35 which is
commit 53c613fe6349994f023245519265999eed75957f upstream.

It's not ready for the stable trees as there are major slowdowns
involved with this patch.

Reported-by: Jiri Kosina <jkosina@suse.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc:  "WoodhouseDavid" <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc:  "SchauflerCasey" <casey.schaufler@intel.com>
Cc: Rainer Fiebig <jrf@mailbox.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-11-23 12:57:41 +01:00
Greg Kroah-Hartman
e1260beb70 Merge 4.9.137 into android-4.9
Changes in 4.9.137
	bcache: fix miss key refill->end in writeback
	hwmon: (pmbus) Fix page count auto-detection.
	jffs2: free jffs2_sb_info through jffs2_kill_sb()
	pcmcia: Implement CLKRUN protocol disabling for Ricoh bridges
	ipmi: Fix timer race with module unload
	parisc: Fix address in HPMC IVA
	parisc: Fix map_pages() to not overwrite existing pte entries
	ALSA: hda - Add quirk for ASUS G751 laptop
	ALSA: hda - Fix headphone pin config for ASUS G751
	ALSA: hda - Add mic quirk for the Lenovo G50-30 (17aa:3905)
	ALSA: ca0106: Disable IZD on SB0570 DAC to fix audio pops
	x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation
	x86/corruption-check: Fix panic in memory_corruption_check() when boot option without value is provided
	x86/speculation: Support Enhanced IBRS on future CPUs
	bpf: do not blindly change rlimit in reuseport net selftest
	Revert "perf tools: Fix PMU term format max value calculation"
	xfrm: policy: use hlist rcu variants on insert
	sparc: Fix single-pcr perf event counter management.
	sparc64: Make proc_id signed.
	sched/fair: Fix the min_vruntime update logic in dequeue_entity()
	perf cpu_map: Align cpu map synthesized events properly.
	x86/fpu: Remove second definition of fpu in __fpu__restore_sig()
	net: qla3xxx: Remove overflowing shift statement
	selftests: ftrace: Add synthetic event syntax testcase
	i2c: rcar: cleanup DMA for all kinds of failure
	locking/lockdep: Fix debug_locks off performance problem
	ataflop: fix error handling during setup
	swim: fix cleanup on setup error
	tun: Consistently configure generic netdev params via rtnetlink
	s390/sthyi: Fix machine name validity indication
	hwmon: (pwm-fan) Set fan speed to 0 on suspend
	perf tools: Free temporary 'sys' string in read_event_files()
	perf tools: Cleanup trace-event-info 'tdata' leak
	perf strbuf: Match va_{add,copy} with va_end
	mmc: sdhci-pci-o2micro: Add quirk for O2 Micro dev 0x8620 rev 0x01
	iwlwifi: pcie: avoid empty free RB queue
	x86/olpc: Indicate that legacy PC XO-1 platform should not register RTC
	cpufreq: dt: Try freeing static OPPs only if we have added them
	Bluetooth: btbcm: Add entry for BCM4335C0 UART bluetooth
	x86: boot: Fix EFI stub alignment
	pinctrl: qcom: spmi-mpp: Fix err handling of pmic_mpp_set_mux
	brcmfmac: fix for proper support of 160MHz bandwidth
	kprobes: Return error if we fail to reuse kprobe instead of BUG_ON()
	ACPI / LPSS: Add alternative ACPI HIDs for Cherry Trail DMA controllers
	pinctrl: qcom: spmi-mpp: Fix drive strength setting
	pinctrl: spmi-mpp: Fix pmic_mpp_config_get() to be compliant
	pinctrl: ssbi-gpio: Fix pm8xxx_pin_config_get() to be compliant
	ixgbevf: VF2VF TCP RSS
	ath10k: schedule hardware restart if WMI command times out
	cgroup, netclassid: add a preemption point to write_classid
	scsi: esp_scsi: Track residual for PIO transfers
	scsi: megaraid_sas: fix a missing-check bug
	RDMA/core: Do not expose unsupported counters
	IB/ipoib: Clear IPCB before icmp_send
	tpm: suppress transmit cmd error logs when TPM 1.2 is disabled/deactivated
	VMCI: Resource wildcard match fixed
	usb: gadget: udc: atmel: handle at91sam9rl PMC
	ext4: fix argument checking in EXT4_IOC_MOVE_EXT
	MD: fix invalid stored role for a disk
	PCI/MSI: Warn and return error if driver enables MSI/MSI-X twice
	coresight: etb10: Fix handling of perf mode
	crypto: caam - fix implicit casts in endianness helpers
	usb: chipidea: Prevent unbalanced IRQ disable
	driver/dma/ioat: Call del_timer_sync() without holding prep_lock
	uio: ensure class is registered before devices
	scsi: lpfc: Correct soft lockup when running mds diagnostics
	signal: Always deliver the kernel's SIGKILL and SIGSTOP to a pid namespace init
	dmaengine: dma-jz4780: Return error if not probed from DT
	ALSA: hda: Check the non-cached stream buffers more explicitly
	ARM: dts: exynos: Remove "cooling-{min|max}-level" for CPU nodes
	arm: dts: exynos: Add missing cooling device properties for CPUs
	ARM: dts: exynos: Convert exynos5250.dtsi to opp-v2 bindings
	ARM: dts: exynos: Mark 1 GHz CPU OPP as suspend OPP on Exynos5250
	xen-swiotlb: use actually allocated size on check physical continuous
	tpm: Restore functionality to xen vtpm driver.
	xen/blkfront: avoid NULL blkfront_info dereference on device removal
	xen: fix race in xen_qlock_wait()
	xen: make xen_qlock_wait() nestable
	libertas: don't set URB_ZERO_PACKET on IN USB transfer
	usbip:vudc: BUG kmalloc-2048 (Not tainted): Poison overwritten
	iwlwifi: mvm: check return value of rs_rate_from_ucode_rate()
	net/ipv4: defensive cipso option parsing
	libnvdimm: Hold reference on parent while scheduling async init
	ASoC: intel: skylake: Add missing break in skl_tplg_get_token()
	jbd2: fix use after free in jbd2_log_do_checkpoint()
	gfs2_meta: ->mount() can get NULL dev_name
	ext4: initialize retries variable in ext4_da_write_inline_data_begin()
	ext4: propagate error from dquot_initialize() in EXT4_IOC_FSSETXATTR
	HID: hiddev: fix potential Spectre v1
	EDAC, {i7core,sb,skx}_edac: Fix uncorrected error counting
	EDAC, skx_edac: Fix logical channel intermediate decoding
	PCI: Add Device IDs for Intel GPU "spurious interrupt" quirk
	signal/GenWQE: Fix sending of SIGKILL
	crypto: lrw - Fix out-of bounds access on counter overflow
	crypto: tcrypt - fix ghash-generic speed test
	ima: fix showing large 'violations' or 'runtime_measurements_count'
	hugetlbfs: dirty pages as they are added to pagecache
	kbuild: fix kernel/bounds.c 'W=1' warning
	iio: ad5064: Fix regulator handling
	iio: adc: imx25-gcq: Fix leak of device_node in mx25_gcq_setup_cfgs()
	iio: adc: at91: fix acking DRDY irq on simple conversions
	iio: adc: at91: fix wrong channel number in triggered buffer mode
	w1: omap-hdq: fix missing bus unregister at removal
	smb3: allow stats which track session and share reconnects to be reset
	smb3: do not attempt cifs operation in smb3 query info error path
	smb3: on kerberos mount if server doesn't specify auth type use krb5
	printk: Fix panic caused by passing log_buf_len to command line
	genirq: Fix race on spurious interrupt detection
	NFSv4.1: Fix the r/wsize checking
	nfsd: Fix an Oops in free_session()
	lockd: fix access beyond unterminated strings in prints
	dm ioctl: harden copy_params()'s copy_from_user() from malicious users
	powerpc/msi: Fix compile error on mpc83xx
	MIPS: OCTEON: fix out of bounds array access on CN68XX
	TC: Set DMA masks for devices
	media: v4l2-tpg: fix kernel oops when enabling HFLIP and OSD
	kgdboc: Passing ekgdboc to command line causes panic
	xen: fix xen_qlock_wait()
	media: em28xx: use a default format if TRY_FMT fails
	media: tvp5150: avoid going past array on v4l2_querymenu()
	media: em28xx: fix input name for Terratec AV 350
	media: em28xx: make v4l2-compliance happier by starting sequence on zero
	arm64: lse: remove -fcall-used-x0 flag
	rpmsg: smd: fix memory leak on channel create
	Cramfs: fix abad comparison when wrap-arounds occur
	arm64: dts: stratix10: Correct System Manager register size
	soc/tegra: pmc: Fix child-node lookup
	btrfs: Handle owner mismatch gracefully when walking up tree
	btrfs: locking: Add extra check in btrfs_init_new_buffer() to avoid deadlock
	btrfs: fix error handling in free_log_tree
	btrfs: iterate all devices during trim, instead of fs_devices::alloc_list
	btrfs: don't attempt to trim devices that don't support it
	btrfs: wait on caching when putting the bg cache
	btrfs: reset max_extent_size on clear in a bitmap
	btrfs: make sure we create all new block groups
	Btrfs: fix wrong dentries after fsync of file that got its parent replaced
	btrfs: qgroup: Dirty all qgroups before rescan
	Btrfs: fix null pointer dereference on compressed write path error
	btrfs: set max_extent_size properly
	MD: fix invalid stored role for a disk - try2
	Linux 4.9.137

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-11-23 11:11:43 +01:00
Jiri Kosina
66fe51cb35 x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation
commit 53c613fe6349994f023245519265999eed75957f upstream.

STIBP is a feature provided by certain Intel ucodes / CPUs. This feature
(once enabled) prevents cross-hyperthread control of decisions made by
indirect branch predictors.

Enable this feature if

- the CPU is vulnerable to spectre v2
- the CPU supports SMT and has SMT siblings online
- spectre_v2 mitigation autoselection is enabled (default)

After some previous discussion, this leaves STIBP on all the time, as wrmsr
on crossing kernel boundary is a no-no. This could perhaps later be a bit
more optimized (like disabling it in NOHZ, experiment with disabling it in
idle, etc) if needed.

Note that the synchronization of the mask manipulation via newly added
spec_ctrl_mutex is currently not strictly needed, as the only updater is
already being serialized by cpu_add_remove_lock, but let's make this a
little bit more future-proof.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc:  "WoodhouseDavid" <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc:  "SchauflerCasey" <casey.schaufler@intel.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/nycvar.YFH.7.76.1809251438240.15880@cbobk.fhfr.pm
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-11-13 11:16:47 -08:00
Minming Qi
a3ab5da4eb Merge android-4.9.120 (f85543b) into msm-4.9
* refs/heads/tmp-f85543b:
  Linux 4.9.120
  x86/CPU/AMD: Have smp_num_siblings and cpu_llc_id always be present
  x86/cpu/amd: Limit cpu_core_id fixup to families older than F17h
  x86/speculation/l1tf: Unbreak !__HAVE_ARCH_PFN_MODIFY_ALLOWED architectures
  x86/init: fix build with CONFIG_SWAP=n
  cpu/hotplug: Non-SMP machines do not make use of booted_once
  x86/smp: fix non-SMP broken build due to redefinition of apic_id_is_primary_thread
  x86/microcode: Allow late microcode loading with SMT disabled
  x86/microcode: Do not upload microcode if CPUs are offline
  tools headers: Synchronise x86 cpufeatures.h for L1TF additions
  x86/mm/kmmio: Make the tracer robust against L1TF
  x86/mm/pat: Make set_memory_np() L1TF safe
  x86/speculation/l1tf: Make pmd/pud_mknotpresent() invert
  x86/speculation/l1tf: Invert all not present mappings
  cpu/hotplug: Fix SMT supported evaluation
  KVM: VMX: Tell the nested hypervisor to skip L1D flush on vmentry
  x86/speculation: Use ARCH_CAPABILITIES to skip L1D flush on vmentry
  x86/speculation: Simplify sysfs report of VMX L1TF vulnerability
  KVM: VMX: support MSR_IA32_ARCH_CAPABILITIES as a feature MSR
  KVM: X86: Allow userspace to define the microcode version
  KVM: X86: Introduce kvm_get_msr_feature()
  KVM: SVM: Add MSR-based feature support for serializing LFENCE
  KVM: x86: Add a framework for supporting MSR-based features
  Documentation/l1tf: Remove Yonah processors from not vulnerable list
  x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_external_intr()
  x86/irq: Let interrupt handlers set kvm_cpu_l1tf_flush_l1d
  x86: Don't include linux/irq.h from asm/hardirq.h
  x86/KVM/VMX: Introduce per-host-cpu analogue of l1tf_flush_l1d
  x86/irq: Demote irq_cpustat_t::__softirq_pending to u16
  x86/KVM/VMX: Move the l1tf_flush_l1d test to vmx_l1d_flush()
  x86/KVM/VMX: Replace 'vmx_l1d_flush_always' with 'vmx_l1d_flush_cond'
  x86/KVM/VMX: Don't set l1tf_flush_l1d to true from vmx_l1d_flush()
  cpu/hotplug: detect SMT disabled by BIOS
  Documentation/l1tf: Fix typos
  x86/KVM/VMX: Initialize the vmx_l1d_flush_pages' content
  Documentation: Add section about CPU vulnerabilities
  x86/bugs, kvm: Introduce boot-time control of L1TF mitigations
  cpu/hotplug: Set CPU_SMT_NOT_SUPPORTED early
  cpu/hotplug: Expose SMT control init function
  x86/kvm: Allow runtime control of L1D flush
  x86/kvm: Serialize L1D flush parameter setter
  x86/kvm: Add static key for flush always
  x86/kvm: Move l1tf setup function
  x86/l1tf: Handle EPT disabled state proper
  x86/kvm: Drop L1TF MSR list approach
  x86/litf: Introduce vmx status variable
  cpu/hotplug: Online siblings when SMT control is turned on
  x86/KVM/VMX: Use MSR save list for IA32_FLUSH_CMD if required
  x86/KVM/VMX: Extend add_atomic_switch_msr() to allow VMENTER only MSRs
  x86/KVM/VMX: Separate the VMX AUTOLOAD guest/host number accounting
  x86/KVM/VMX: Add find_msr() helper function
  x86/KVM/VMX: Split the VMX MSR LOAD structures to have an host/guest numbers
  kvm: nVMX: Update MSR load counts on a VMCS switch
  x86/KVM/VMX: Add L1D flush logic
  x86/KVM/VMX: Add L1D MSR based flush
  x86/KVM/VMX: Add L1D flush algorithm
  x86/KVM/VMX: Add module argument for L1TF mitigation
  x86/KVM: Warn user if KVM is loaded SMT and L1TF CPU bug being present
  cpu/hotplug: Boot HT siblings at least once
  Revert "x86/apic: Ignore secondary threads if nosmt=force"
  x86/speculation/l1tf: Fix up pte->pfn conversion for PAE
  x86/speculation/l1tf: Protect PAE swap entries against L1TF
  x86/CPU/AMD: Move TOPOEXT reenablement before reading smp_num_siblings
  x86/cpufeatures: Add detection of L1D cache flush support.
  x86/speculation/l1tf: Extend 64bit swap file size limit
  x86/apic: Ignore secondary threads if nosmt=force
  x86/cpu/AMD: Evaluate smp_num_siblings early
  x86/CPU/AMD: Do not check CPUID max ext level before parsing SMP info
  x86/cpu/intel: Evaluate smp_num_siblings early
  x86/cpu/topology: Provide detect_extended_topology_early()
  x86/cpu/common: Provide detect_ht_early()
  x86/cpu/AMD: Remove the pointless detect_ht() call
  x86/cpu: Remove the pointless CPU printout
  cpu/hotplug: Provide knobs to control SMT
  cpu/hotplug: Split do_cpu_down()
  cpu/hotplug: Make bringup/teardown of smp threads symmetric
  x86/topology: Provide topology_smt_supported()
  x86/smp: Provide topology_is_primary_thread()
  x86/bugs: Move the l1tf function and define pr_fmt properly
  x86/speculation/l1tf: Limit swap file size to MAX_PA/2
  x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings
  x86/speculation/l1tf: Add sysfs reporting for l1tf
  x86/speculation/l1tf: Make sure the first page is always reserved
  x86/speculation/l1tf: Protect PROT_NONE PTEs against speculation
  x86/speculation/l1tf: Protect swap entries against L1TF
  x86/speculation/l1tf: Change order of offset/type in swap entry
  mm: x86: move _PAGE_SWP_SOFT_DIRTY from bit 7 to bit 1
  x86/speculation/l1tf: Increase 32bit PAE __PHYSICAL_PAGE_SHIFT
  x86/irqflags: Provide a declaration for native_save_fl
  kprobes/x86: Fix %p uses in error messages
  x86/speculation: Protect against userspace-userspace spectreRSB
  x86/paravirt: Fix spectre-v2 mitigations for paravirt guests
  ARM: dts: imx6sx: fix irq for pcie bridge
  IB/ocrdma: fix out of bounds access to local buffer
  mtd: nand: qcom: Add a NULL check for devm_kasprintf()
  IB/mlx4: Mark user MR as writable if actual virtual memory is writable
  IB/core: Make testing MR flags for writability a static inline function
  proc: Fix proc_sys_prune_dcache to hold a sb reference
  proc/sysctl: Don't grab i_lock under sysctl_lock.
  proc/sysctl: prune stale dentries during unregistering
  fix __legitimize_mnt()/mntput() race
  fix mntput/mntput race
  make sure that __dentry_kill() always invalidates d_seq, unhashed or not
  root dentries need RCU-delayed freeing
  init: rename and re-order boot_cpu_state_init()
  scsi: sr: Avoid that opening a CD-ROM hangs with runtime power management enabled
  ACPI / LPSS: Add missing prv_offset setting for byt/cht PWM devices
  xen/netfront: don't cache skb_shinfo()
  Mark HI and TASKLET softirq synchronous
  kasan: add no_sanitize attribute for clang builds
  parisc: Define mb() and add memory barriers to assembler unlock sequences
  parisc: Enable CONFIG_MLONGCALLS by default
  tpm: fix race condition in tpm_common_write()
  ext4: fix check to prevent initializing reserved inodes
  ANDROID: AVB error handler to invalidate vbmeta partition.

Conflicts:
	include/linux/swapfile.h
	kernel/smp.c
	kernel/softirq.c

Change-Id: Ied9792f455e336bf7e3bdcf9a6c21f7a212b6db6
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
Signed-off-by: Minming Qi <mqi@codeaurora.org>
2018-10-31 17:25:20 +08:00
Greg Kroah-Hartman
f85543ba3c Merge 4.9.120 into android-4.9
Changes in 4.9.120
	ext4: fix check to prevent initializing reserved inodes
	tpm: fix race condition in tpm_common_write()
	parisc: Enable CONFIG_MLONGCALLS by default
	parisc: Define mb() and add memory barriers to assembler unlock sequences
	kasan: add no_sanitize attribute for clang builds
	Mark HI and TASKLET softirq synchronous
	xen/netfront: don't cache skb_shinfo()
	ACPI / LPSS: Add missing prv_offset setting for byt/cht PWM devices
	scsi: sr: Avoid that opening a CD-ROM hangs with runtime power management enabled
	init: rename and re-order boot_cpu_state_init()
	root dentries need RCU-delayed freeing
	make sure that __dentry_kill() always invalidates d_seq, unhashed or not
	fix mntput/mntput race
	fix __legitimize_mnt()/mntput() race
	proc/sysctl: prune stale dentries during unregistering
	proc/sysctl: Don't grab i_lock under sysctl_lock.
	proc: Fix proc_sys_prune_dcache to hold a sb reference
	IB/core: Make testing MR flags for writability a static inline function
	IB/mlx4: Mark user MR as writable if actual virtual memory is writable
	mtd: nand: qcom: Add a NULL check for devm_kasprintf()
	IB/ocrdma: fix out of bounds access to local buffer
	ARM: dts: imx6sx: fix irq for pcie bridge
	x86/paravirt: Fix spectre-v2 mitigations for paravirt guests
	x86/speculation: Protect against userspace-userspace spectreRSB
	kprobes/x86: Fix %p uses in error messages
	x86/irqflags: Provide a declaration for native_save_fl
	x86/speculation/l1tf: Increase 32bit PAE __PHYSICAL_PAGE_SHIFT
	mm: x86: move _PAGE_SWP_SOFT_DIRTY from bit 7 to bit 1
	x86/speculation/l1tf: Change order of offset/type in swap entry
	x86/speculation/l1tf: Protect swap entries against L1TF
	x86/speculation/l1tf: Protect PROT_NONE PTEs against speculation
	x86/speculation/l1tf: Make sure the first page is always reserved
	x86/speculation/l1tf: Add sysfs reporting for l1tf
	x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings
	x86/speculation/l1tf: Limit swap file size to MAX_PA/2
	x86/bugs: Move the l1tf function and define pr_fmt properly
	x86/smp: Provide topology_is_primary_thread()
	x86/topology: Provide topology_smt_supported()
	cpu/hotplug: Make bringup/teardown of smp threads symmetric
	cpu/hotplug: Split do_cpu_down()
	cpu/hotplug: Provide knobs to control SMT
	x86/cpu: Remove the pointless CPU printout
	x86/cpu/AMD: Remove the pointless detect_ht() call
	x86/cpu/common: Provide detect_ht_early()
	x86/cpu/topology: Provide detect_extended_topology_early()
	x86/cpu/intel: Evaluate smp_num_siblings early
	x86/CPU/AMD: Do not check CPUID max ext level before parsing SMP info
	x86/cpu/AMD: Evaluate smp_num_siblings early
	x86/apic: Ignore secondary threads if nosmt=force
	x86/speculation/l1tf: Extend 64bit swap file size limit
	x86/cpufeatures: Add detection of L1D cache flush support.
	x86/CPU/AMD: Move TOPOEXT reenablement before reading smp_num_siblings
	x86/speculation/l1tf: Protect PAE swap entries against L1TF
	x86/speculation/l1tf: Fix up pte->pfn conversion for PAE
	Revert "x86/apic: Ignore secondary threads if nosmt=force"
	cpu/hotplug: Boot HT siblings at least once
	x86/KVM: Warn user if KVM is loaded SMT and L1TF CPU bug being present
	x86/KVM/VMX: Add module argument for L1TF mitigation
	x86/KVM/VMX: Add L1D flush algorithm
	x86/KVM/VMX: Add L1D MSR based flush
	x86/KVM/VMX: Add L1D flush logic
	kvm: nVMX: Update MSR load counts on a VMCS switch
	x86/KVM/VMX: Split the VMX MSR LOAD structures to have an host/guest numbers
	x86/KVM/VMX: Add find_msr() helper function
	x86/KVM/VMX: Separate the VMX AUTOLOAD guest/host number accounting
	x86/KVM/VMX: Extend add_atomic_switch_msr() to allow VMENTER only MSRs
	x86/KVM/VMX: Use MSR save list for IA32_FLUSH_CMD if required
	cpu/hotplug: Online siblings when SMT control is turned on
	x86/litf: Introduce vmx status variable
	x86/kvm: Drop L1TF MSR list approach
	x86/l1tf: Handle EPT disabled state proper
	x86/kvm: Move l1tf setup function
	x86/kvm: Add static key for flush always
	x86/kvm: Serialize L1D flush parameter setter
	x86/kvm: Allow runtime control of L1D flush
	cpu/hotplug: Expose SMT control init function
	cpu/hotplug: Set CPU_SMT_NOT_SUPPORTED early
	x86/bugs, kvm: Introduce boot-time control of L1TF mitigations
	Documentation: Add section about CPU vulnerabilities
	x86/KVM/VMX: Initialize the vmx_l1d_flush_pages' content
	Documentation/l1tf: Fix typos
	cpu/hotplug: detect SMT disabled by BIOS
	x86/KVM/VMX: Don't set l1tf_flush_l1d to true from vmx_l1d_flush()
	x86/KVM/VMX: Replace 'vmx_l1d_flush_always' with 'vmx_l1d_flush_cond'
	x86/KVM/VMX: Move the l1tf_flush_l1d test to vmx_l1d_flush()
	x86/irq: Demote irq_cpustat_t::__softirq_pending to u16
	x86/KVM/VMX: Introduce per-host-cpu analogue of l1tf_flush_l1d
	x86: Don't include linux/irq.h from asm/hardirq.h
	x86/irq: Let interrupt handlers set kvm_cpu_l1tf_flush_l1d
	x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_external_intr()
	Documentation/l1tf: Remove Yonah processors from not vulnerable list
	KVM: x86: Add a framework for supporting MSR-based features
	KVM: SVM: Add MSR-based feature support for serializing LFENCE
	KVM: X86: Introduce kvm_get_msr_feature()
	KVM: X86: Allow userspace to define the microcode version
	KVM: VMX: support MSR_IA32_ARCH_CAPABILITIES as a feature MSR
	x86/speculation: Simplify sysfs report of VMX L1TF vulnerability
	x86/speculation: Use ARCH_CAPABILITIES to skip L1D flush on vmentry
	KVM: VMX: Tell the nested hypervisor to skip L1D flush on vmentry
	cpu/hotplug: Fix SMT supported evaluation
	x86/speculation/l1tf: Invert all not present mappings
	x86/speculation/l1tf: Make pmd/pud_mknotpresent() invert
	x86/mm/pat: Make set_memory_np() L1TF safe
	x86/mm/kmmio: Make the tracer robust against L1TF
	tools headers: Synchronise x86 cpufeatures.h for L1TF additions
	x86/microcode: Do not upload microcode if CPUs are offline
	x86/microcode: Allow late microcode loading with SMT disabled
	x86/smp: fix non-SMP broken build due to redefinition of apic_id_is_primary_thread
	cpu/hotplug: Non-SMP machines do not make use of booted_once
	x86/init: fix build with CONFIG_SWAP=n
	x86/speculation/l1tf: Unbreak !__HAVE_ARCH_PFN_MODIFY_ALLOWED architectures
	x86/cpu/amd: Limit cpu_core_id fixup to families older than F17h
	x86/CPU/AMD: Have smp_num_siblings and cpu_llc_id always be present
	Linux 4.9.120

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-08-15 18:30:15 +02:00
Abel Vesa
aee0861fbe cpu/hotplug: Non-SMP machines do not make use of booted_once
commit 269777aa530f3438ec1781586cdac0b5fe47b061 upstream.

Commit 0cc3cd21657b ("cpu/hotplug: Boot HT siblings at least once")
breaks non-SMP builds.

[ I suspect the 'bool' fields should just be made to be bitfields and be
  exposed regardless of configuration, but that's a separate cleanup
  that I'll leave to the owners of this file for later.   - Linus ]

Fixes: 0cc3cd21657b ("cpu/hotplug: Boot HT siblings at least once")
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Abel Vesa <abelvesa@linux.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-15 18:14:55 +02:00
Thomas Gleixner
c504b9fce7 cpu/hotplug: Fix SMT supported evaluation
commit bc2d8d262cba5736332cbc866acb11b1c5748aa9 upstream

Josh reported that the late SMT evaluation in cpu_smt_state_init() sets
cpu_smt_control to CPU_SMT_NOT_SUPPORTED in case that 'nosmt' was supplied
on the kernel command line as it cannot differentiate between SMT disabled
by BIOS and SMT soft disable via 'nosmt'. That wreckages the state and
makes the sysfs interface unusable.

Rework this so that during bringup of the non boot CPUs the availability of
SMT is determined in cpu_smt_allowed(). If a newly booted CPU is not a
'primary' thread then set the local cpu_smt_available marker and evaluate
this explicitely right after the initial SMP bringup has finished.

SMT evaulation on x86 is a trainwreck as the firmware has all the
information _before_ booting the kernel, but there is no interface to query
it.

Fixes: 73d5e2b47264 ("cpu/hotplug: detect SMT disabled by BIOS")
Reported-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-15 18:14:53 +02:00
Josh Poimboeuf
8b1969db55 cpu/hotplug: detect SMT disabled by BIOS
commit 73d5e2b472640b1fcdb61ae8be389912ef211bda upstream

If SMT is disabled in BIOS, the CPU code doesn't properly detect it.
The /sys/devices/system/cpu/smt/control file shows 'on', and the 'l1tf'
vulnerabilities file shows SMT as vulnerable.

Fix it by forcing 'cpu_smt_control' to CPU_SMT_NOT_SUPPORTED in such a
case.  Unfortunately the detection can only be done after bringing all
the CPUs online, so we have to overwrite any previous writes to the
variable.

Reported-by: Joe Mario <jmario@redhat.com>
Tested-by: Jiri Kosina <jkosina@suse.cz>
Fixes: f048c399e0f7 ("x86/topology: Provide topology_smt_supported()")
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-15 18:14:51 +02:00
Thomas Gleixner
929d3b2e9b cpu/hotplug: Set CPU_SMT_NOT_SUPPORTED early
commit fee0aede6f4739c87179eca76136f83210953b86 upstream

The CPU_SMT_NOT_SUPPORTED state is set (if the processor does not support
SMT) when the sysfs SMT control file is initialized.

That was fine so far as this was only required to make the output of the
control file correct and to prevent writes in that case.

With the upcoming l1tf command line parameter, this needs to be set up
before the L1TF mitigation selection and command line parsing happens.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20180713142323.121795971@linutronix.de
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-15 18:14:50 +02:00
Jiri Kosina
a69c5e0706 cpu/hotplug: Expose SMT control init function
commit 8e1b706b6e819bed215c0db16345568864660393 upstream

The L1TF mitigation will gain a commend line parameter which allows to set
a combination of hypervisor mitigation and SMT control.

Expose cpu_smt_disable() so the command line parser can tweak SMT settings.

[ tglx: Split out of larger patch and made it preserve an already existing
  	force off state ]

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20180713142323.039715135@linutronix.de
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-15 18:14:50 +02:00
Thomas Gleixner
e7cda2ffe1 cpu/hotplug: Online siblings when SMT control is turned on
commit 215af5499d9e2b55f111d2431ea20218115f29b3 upstream

Writing 'off' to /sys/devices/system/cpu/smt/control offlines all SMT
siblings. Writing 'on' merily enables the abilify to online them, but does
not online them automatically.

Make 'on' more useful by onlining all offline siblings.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-15 18:14:49 +02:00
Konrad Rzeszutek Wilk
a0695af340 x86/KVM: Warn user if KVM is loaded SMT and L1TF CPU bug being present
commit 26acfb666a473d960f0fd971fe68f3e3ad16c70b upstream

If the L1TF CPU bug is present we allow the KVM module to be loaded as the
major of users that use Linux and KVM have trusted guests and do not want a
broken setup.

Cloud vendors are the ones that are uncomfortable with CVE 2018-3620 and as
such they are the ones that should set nosmt to one.

Setting 'nosmt' means that the system administrator also needs to disable
SMT (Hyper-threading) in the BIOS, or via the 'nosmt' command line
parameter, or via the /sys/devices/system/cpu/smt/control. See commit
05736e4ac13c ("cpu/hotplug: Provide knobs to control SMT").

Other mitigations are to use task affinity, cpu sets, interrupt binding,
etc - anything to make sure that _only_ the same guests vCPUs are running
on sibling threads.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-15 18:14:47 +02:00