289 Commits

Author SHA1 Message Date
Rick Edgecombe
f3acfb8c97 UPSTREAM: mm/vmalloc: Add flag for freeing of special permsissions
Add a new flag VM_FLUSH_RESET_PERMS, for enabling vfree operations to
immediately clear executable TLB entries before freeing pages, and handle
resetting permissions on the directmap. This flag is useful for any kind
of memory with elevated permissions, or where there can be related
permissions changes on the directmap. Today this is RO+X and RO memory.

Although this enables directly vfreeing non-writeable memory now,
non-writable memory cannot be freed in an interrupt because the allocation
itself is used as a node on deferred free list. So when RO memory needs to
be freed in an interrupt the code doing the vfree needs to have its own
work queue, as was the case before the deferred vfree list was added to
vmalloc.

For architectures with set_direct_map_ implementations this whole operation
can be done with one TLB flush when centralized like this. For others with
directmap permissions, currently only arm64, a backup method using
set_memory functions is used to reset the directmap. When arm64 adds
set_direct_map_ functions, this backup can be removed.

When the TLB is flushed to both remove TLB entries for the vmalloc range
mapping and the direct map permissions, the lazy purge operation could be
done to try to save a TLB flush later. However today vm_unmap_aliases
could flush a TLB range that does not include the directmap. So a helper
is added with extra parameters that can allow both the vmalloc address and
the direct mapping to be flushed during this operation. The behavior of the
normal vm_unmap_aliases function is unchanged.

Suggested-by: Dave Hansen <dave.hansen@intel.com>
Suggested-by: Andy Lutomirski <luto@kernel.org>
Suggested-by: Will Deacon <will.deacon@arm.com>
Change-Id: I914f605f3601bde21f194069dd31e658c9a22fcd
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <akpm@linux-foundation.org>
Cc: <ard.biesheuvel@linaro.org>
Cc: <deneen.t.dock@intel.com>
Cc: <kernel-hardening@lists.openwall.com>
Cc: <kristen@linux.intel.com>
Cc: <linux_dti@icloud.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190426001143.4983-17-namit@vmware.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2025-10-02 18:28:16 -07:00
Srinivasarao P
90bb7a2b24 Merge android-4.14-stable.180 (816f245) into msm-4.14
* refs/heads/tmp-816f245:
  Revert "clk: qcom: rcg2: Don't crash if our parent can't be found; return an error"
  Reverting crypto patches
  Reverting incremental fs changes
  Linux 4.14.180
  cgroup, netclassid: remove double cond_resched
  mac80211: add ieee80211_is_any_nullfunc()
  ALSA: hda: Match both PCI ID and SSID for driver blacklist
  tracing: Reverse the order of trace_types_lock and event_mutex
  sctp: Fix SHUTDOWN CTSN Ack in the peer restart case
  net: systemport: suppress warnings on failed Rx SKB allocations
  net: bcmgenet: suppress warnings on failed Rx SKB allocations
  lib/mpi: Fix building for powerpc with clang
  net: dsa: b53: Rework ARL bin logic
  scripts/config: allow colons in option strings for sed
  s390/ftrace: fix potential crashes when switching tracers
  cifs: protect updating server->dstaddr with a spinlock
  net: stmmac: Fix sub-second increment
  net: stmmac: fix enabling socfpga's ptp_ref_clock
  wimax/i2400m: Fix potential urb refcnt leak
  ASoC: codecs: hdac_hdmi: Fix incorrect use of list_for_each_entry
  ASoC: rsnd: Fix HDMI channel mapping for multi-SSI mode
  ASoC: sgtl5000: Fix VAG power-on handling
  selftests/ipc: Fix test failure seen after initial test run
  ASoC: topology: Check return value of pcm_new_ver
  powerpc/pci/of: Parse unassigned resources
  vhost: vsock: kick send_pkt worker once device is started
  ANDROID: arm64: fix a mismerge in proc.S
  Linux 4.14.179
  selinux: properly handle multiple messages in selinux_netlink_send()
  dmaengine: dmatest: Fix iteration non-stop logic
  nfs: Fix potential posix_acl refcnt leak in nfs3_set_acl
  ALSA: opti9xx: shut up gcc-10 range warning
  iommu/amd: Fix legacy interrupt remapping for x2APIC-enabled system
  scsi: target/iblock: fix WRITE SAME zeroing
  iommu/qcom: Fix local_base status check
  vfio/type1: Fix VA->PA translation for PFNMAP VMAs in vaddr_get_pfn()
  vfio: avoid possible overflow in vfio_iommu_type1_pin_pages
  RDMA/mlx4: Initialize ib_spec on the stack
  RDMA/mlx5: Set GRH fields in query QP on RoCE
  dm verity fec: fix hash block number in verity_fec_decode
  PM: hibernate: Freeze kernel threads in software_resume()
  PM: ACPI: Output correct message on target power state
  ALSA: pcm: oss: Place the plugin buffer overflow checks correctly
  ALSA: hda/hdmi: fix without unlocked before return
  ALSA: hda/realtek - Two front mics on a Lenovo ThinkCenter
  mmc: sdhci-pci: Fix eMMC driver strength for BYT-based controllers
  mmc: sdhci-xenon: fix annoying 1.8V regulator warning
  btrfs: fix partial loss of prealloc extent past i_size after fsync
  btrfs: fix block group leak when removing fails
  drm/qxl: qxl_release use after free
  drm/qxl: qxl_release leak in qxl_hw_surface_alloc()
  drm/qxl: qxl_release leak in qxl_draw_dirty_fb()
  drm/edid: Fix off-by-one in DispID DTD pixel clock
  ext4: fix special inode number checks in __ext4_iget()
  ANDROID: Incremental fs: Fix issues with very large files
  Linux 4.14.178
  propagate_one(): mnt_set_mountpoint() needs mount_lock
  ext4: check for non-zero journal inum in ext4_calculate_overhead
  qed: Fix use after free in qed_chain_free
  ext4: unsigned int compared against zero
  ext4: fix block validity checks for journal inodes using indirect blocks
  ext4: don't perform block validity checks on the journal inode
  ext4: protect journal inode's blocks using block_validity
  ext4: avoid declaring fs inconsistent due to invalid file handles
  hwmon: (jc42) Fix name to have no illegal characters
  ext4: convert BUG_ON's to WARN_ON's in mballoc.c
  ext4: increase wait time needed before reuse of deleted inode numbers
  ext4: use matching invalidatepage in ext4_writepage
  arm64: Delete the space separator in __emit_inst
  xen/xenbus: ensure xenbus_map_ring_valloc() returns proper grant status
  objtool: Support Clang non-section symbols in ORC dump
  objtool: Fix CONFIG_UBSAN_TRAP unreachable warnings
  scsi: target: fix PR IN / READ FULL STATUS for FC
  xfs: fix partially uninitialized structure in xfs_reflink_remap_extent
  x86: hyperv: report value of misc_features
  bpf, x86: Fix encoding for lower 8-bit registers in BPF_STX BPF_B
  mm: shmem: disable interrupt when acquiring info->lock in userfaultfd_copy path
  perf/core: fix parent pid/tid in task exit events
  ARM: dts: bcm283x: Disable dsi0 node
  net/cxgb4: Check the return from t4_query_params properly
  i2c: altera: use proper variable to hold errno
  nfsd: memory corruption in nfsd4_lock()
  iio:ad7797: Use correct attribute_group
  usb: gadget: udc: bdc: Remove unnecessary NULL checks in bdc_req_complete
  usb: dwc3: gadget: Do link recovery for SS and SSP
  binder: take read mode of mmap_sem in binder_alloc_free_page()
  include/uapi/linux/swab.h: fix userspace breakage, use __BITS_PER_LONG for swap
  mtd: cfi: fix deadloop in cfi_cmdset_0002.c do_write_buffer
  remoteproc: Fix wrong rvring index computation
  xfs: Fix deadlock between AGI and AGF with RENAME_WHITEOUT
  xfs: validate sb_logsunit is a multiple of the fs blocksize
  serial: sh-sci: Make sure status register SCxSR is read in correct sequence
  usb: f_fs: Clear OS Extended descriptor counts to zero in ffs_data_reset()
  UAS: fix deadlock in error handling and PM flushing work
  UAS: no use logging any details in case of ENODEV
  cdc-acm: introduce a cool down
  cdc-acm: close race betrween suspend() and acm_softint
  staging: vt6656: Power save stop wake_up_count wrap around.
  staging: vt6656: Fix pairwise key entry save.
  staging: vt6656: Fix drivers TBTT timing counter.
  staging: vt6656: Fix calling conditions of vnt_set_bss_mode
  staging: vt6656: Don't set RCR_MULTICAST or RCR_BROADCAST by default.
  vt: don't hardcode the mem allocation upper bound
  staging: comedi: Fix comedi_device refcnt leak in comedi_open
  staging: comedi: dt2815: fix writing hi byte of analog output
  powerpc/setup_64: Set cache-line-size based on cache-block-size
  ARM: imx: provide v7_cpu_resume() only on ARM_CPU_SUSPEND=y
  iwlwifi: pcie: actually release queue memory in TVQM
  ASoC: dapm: fixup dapm kcontrol widget
  audit: check the length of userspace generated audit records
  usb-storage: Add unusual_devs entry for JMicron JMS566
  tty: rocket, avoid OOB access
  tty: hvc: fix buffer overflow during hvc_alloc().
  KVM: VMX: Enable machine check support for 32bit targets
  KVM: Check validity of resolved slot when searching memslots
  tpm: ibmvtpm: retry on H_CLOSED in tpm_ibmvtpm_send()
  tpm/tpm_tis: Free IRQ if probing fails
  ALSA: usb-audio: Filter out unsupported sample rates on Focusrite devices
  ALSA: usb-audio: Fix usb audio refcnt leak when getting spdif
  ALSA: hda/realtek - Add new codec supported for ALC245
  ALSA: usx2y: Fix potential NULL dereference
  tools/vm: fix cross-compile build
  mm/ksm: fix NULL pointer dereference when KSM zero page is enabled
  mm/hugetlb: fix a addressing exception caused by huge_pte_offset
  vmalloc: fix remap_vmalloc_range() bounds checks
  overflow.h: Add arithmetic shift helper
  USB: hub: Fix handling of connect changes during sleep
  USB: core: Fix free-while-in-use bug in the USB S-Glibrary
  USB: early: Handle AMD's spec-compliant identifiers, too
  USB: Add USB_QUIRK_DELAY_CTRL_MSG and USB_QUIRK_DELAY_INIT for Corsair K70 RGB RAPIDFIRE
  USB: sisusbvga: Change port variable from signed to unsigned
  fs/namespace.c: fix mountpoint reference counter race
  iio: xilinx-xadc: Fix sequencer configuration for aux channels in simultaneous mode
  iio: xilinx-xadc: Fix clearing interrupt when enabling trigger
  iio: xilinx-xadc: Fix ADC-B powerdown
  iio: adc: stm32-adc: fix sleep in atomic context
  ALSA: hda: Remove ASUS ROG Zenith from the blacklist
  KEYS: Avoid false positive ENOMEM error on key read
  vrf: Check skb for XFRM_TRANSFORMED flag
  xfrm: Always set XFRM_TRANSFORMED in xfrm{4,6}_output_finish
  net: dsa: b53: Fix ARL register definitions
  team: fix hang in team_mode_get()
  tcp: cache line align MAX_TCP_HEADER
  net/x25: Fix x25_neigh refcnt leak when receiving frame
  net: netrom: Fix potential nr_neigh refcnt leak in nr_add_node
  net: bcmgenet: correct per TX/RX ring statistics
  macvlan: fix null dereference in macvlan_device_event()
  macsec: avoid to set wrong mtu
  ipv6: fix restrict IPV6_ADDRFORM operation
  cxgb4: fix large delays in PTP synchronization
  mm, slub: restore the original intention of prefetch_freepointer()
  PCI/ASPM: Allow re-enabling Clock PM
  perf/core: Disable page faults when getting phys address
  pwm: bcm2835: Dynamically allocate base
  pwm: renesas-tpu: Fix late Runtime PM enablement
  s390/cio: avoid duplicated 'ADD' uevents
  ipc/util.c: sysvipc_find_ipc() should increase position index
  selftests: kmod: fix handling test numbers above 9
  kernel/gcov/fs.c: gcov_seq_next() should increase position index
  ASoC: Intel: atom: Take the drv->lock mutex before calling sst_send_slot_map()
  scsi: iscsi: Report unbind session event when the target has been removed
  pwm: rcar: Fix late Runtime PM enablement
  ceph: don't skip updating wanted caps when cap is stale
  ceph: return ceph_mdsc_do_request() errors from __get_parent()
  scsi: lpfc: Fix kasan slab-out-of-bounds error in lpfc_unreg_login
  watchdog: reset last_hw_keepalive time at start
  vti4: removed duplicate log message.
  crypto: mxs-dcp - make symbols 'sha1_null_hash' and 'sha256_null_hash' static
  drm/msm: Use the correct dma_sync calls harder
  keys: Fix the use of the C++ keyword "private" in uapi/linux/keyctl.h
  net: ipv4: avoid unused variable warning for sysctl
  net: ipv4: emulate READ_ONCE() on ->hdrincl bit-field in raw_sendmsg()
  ext4: fix extent_status fragmentation for plain files
  FROMGIT: f2fs: fix missing check for f2fs_unlock_op
  ANDROID: Fix kernel build regressions from virtio-gpu-next patches
  ANDROID: Incremental fs: Add setattr call
  ANDROID: cuttlefish_defconfig: enable LTO and CFI
  ANDROID: x86: map CFI jump tables in pti_clone_entry_text
  ANDROID: crypto: aesni: fix function types for aesni_(enc|dec)
  ANDROID: x86: disable CFI for do_syscall_*
  ANDROID: BACKPORT: x86, module: Ignore __typeid__ relocations
  ANDROID: BACKPORT: x86, relocs: Ignore __typeid__ relocations
  ANDROID: BACKPORT: x86/extable: Do not mark exception callback as CFI
  FROMLIST: crypto, x86/sha: Eliminate casts on asm implementations
  UPSTREAM: crypto: x86 - Rename functions to avoid conflict with crypto/sha256.h
  BACKPORT: x86/vmlinux: Actually use _etext for the end of the text segment
  ANDROID: x86: disable STACK_VALIDATION with LTO_CLANG
  ANDROID: x86: add support for CONFIG_LTO_CLANG
  ANDROID: x86/vdso: disable LTO only for VDSO
  ANDROID: x86/cpu/vmware: use the full form of inl in VMWARE_PORT
  UPSTREAM: x86/build/lto: Fix truncated .bss with -fdata-sections
  ANDROID: kbuild: don't select LD_DEAD_CODE_DATA_ELIMINATION with LTO
  ANDROID: kbuild: export LTO and CFI flags
  ANDROID: cfi: remove unnecessary <asm/memory.h> include
  ANDROID: drm/virtio: rebase to latest virgl/drm-misc-next (take 2)
  UPSTREAM: sysrq: Use panic() to force a crash
  ANDROID: Incremental fs: Use simple compression in log buffer
  ANDROID: dm-bow: Fix not to skip trim at framented range
  ANDROID: Remove VLA from uid_sys_stats.c
  ANDROID: cuttlefish_defconfig: enable CONFIG_DEBUG_LIST
  Linux 4.14.177
  KEYS: Don't write out to userspace while holding key semaphore
  KEYS: Use individual pages in big_key for crypto buffers
  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()
  net: dsa: bcm_sf2: Fix overflow checks
  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
  iommu/vt-d: Fix mm reference leak
  NFS: Fix memory leaks in nfs_pageio_stop_mirroring()
  drm/amdkfd: kfree the wrong pointer
  x86: ACPI: fix CPU hotplug deadlock
  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
  include/linux/swapops.h: correct guards for non_swap_entry()
  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
  NFSv4/pnfs: Return valid stateids in nfs_layout_find_inode_by_stateid()
  rtc: 88pm860x: fix possible race condition
  soc: imx: gpc: fix power up sequencing
  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()
  rbd: call rbd_dev_unprobe() after unwatching and flushing notifies
  rbd: avoid a deadlock on header_rwsem when flushing notifies
  of: fix missing kobject init for !SYSFS && OF_DYNAMIC config
  soc: qcom: smem: Use le32_to_cpu for comparison
  wil6210: abort properly in cfg suspend
  wil6210: fix length check in __wmi_send
  wil6210: add block size checks during FW load
  wil6210: fix PCIe bus mastering in case of interface down
  rpmsg: glink: smem: Ensure ordering during tx
  rpmsg: glink: Fix missing mutex_init() in qcom_glink_alloc_channel()
  rtc: pm8xxx: Fix issue in RTC write path
  rpmsg: glink: use put_device() if device_register fail
  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
  arch_topology: Fix section miss match warning due to free_raw_capacity()
  arm64: traps: Don't print stack or raw PC/LR values in backtraces
  arm64: perf: remove unsupported events for Cortex-A73
  Revert "gpio: set up initial state from .get_direction()"
  clk: Fix debugfs_create_*() usage
  drm: NULL pointer dereference [null-pointer-deref] (CWE 476) problem
  video: fbdev: sis: Remove unnecessary parentheses and commented code
  lib/raid6: use vdupq_n_u8 to avoid endianness warnings
  ALSA: hda: Don't release card at firmware loading error
  irqchip/mbigen: Free msi_desc on device teardown
  netfilter: nf_tables: report EOPNOTSUPP on unsupported flags/object type
  arm, bpf: Fix bugs with ALU64 {RSH, ARSH} BPF_K shift by 0
  ext4: use non-movable memory for superblock readahead
  scsi: sg: add sg_remove_request in sg_common_write
  objtool: Fix switch table detection in .text.unlikely
  mm/vmalloc.c: move 'area->pages' after if statement
  x86/resctrl: Fix invalid attempt at removing the default resource group
  x86/resctrl: Preserve CDP enable over CPU hotplug
  x86/intel_rdt: Enable L2 CDP in MSR IA32_L2_QOS_CFG
  x86/intel_rdt: Add two new resources for L2 Code and Data Prioritization (CDP)
  x86/intel_rdt: Enumerate L2 Code and Data Prioritization (CDP) feature
  x86/microcode/AMD: Increase microcode PATCH_MAX_SIZE
  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
  tracing: Fix the race between registering 'snapshot' event trigger and triggering 'snapshot' operation
  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
  pwm: pca9685: Fix PWM/GPIO inter-operation
  jbd2: improve comments about freeing data buffers whose page mapping is NULL
  scsi: ufs: Fix ufshcd_hold() caused scheduling while atomic
  net: stmmac: dwmac-sunxi: Provide TX and RX fifo sizes
  net: revert default NAPI poll timeout to 2 jiffies
  net: qrtr: send msgs from local of same id as broadcast
  net: ipv6: do not consider routes via gateways for anycast address check
  net: ipv4: devinet: Fix crash when add/del multicast IP with autojoin
  hsr: check protocol version in hsr_newlink()
  amd-xgbe: Use __napi_schedule() in BH context
  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()
  ftrace/kprobe: Show the maxactive number on kprobe_events
  drm: Remove PageReserved manipulation from drm_pci_alloc
  drm/dp_mst: Fix clearing payload state on topology disable
  crypto: caam - update xts sector size for large input length
  dm zoned: remove duplicate nr_rnd_zones increase in dmz_init_zone()
  btrfs: use nofs allocations for running delayed items
  Btrfs: fix crash during unmount due to race with delayed inode workers
  powerpc: Make setjmp/longjmp signature standard
  powerpc: Add attributes for setjmp/longjmp
  scsi: mpt3sas: Fix kernel panic observed on soft HBA unplug
  powerpc/kprobes: Ignore traps that happened in real mode
  powerpc/xive: Use XIVE_BAD_IRQ instead of zero to catch non configured IPIs
  powerpc/hash64/devmap: Use H_PAGE_THP_HUGE when setting up huge devmap PTE entries
  powerpc/64/tm: Don't let userspace set regs->trap via sigreturn
  powerpc/powernv/idle: Restore AMR/UAMOR/AMOR after idle
  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
  perf tools: Support Python 3.8+ in Makefile
  ocfs2: no need try to truncate file beyond i_size
  fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()
  ext4: fix a data race at inode->i_blocks
  NFS: Fix a page leak in nfs_destroy_unlinked_subrequests()
  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
  powerpc/pseries: Drop pointless static qualifier in vpa_debugfs_init()
  net: rtnl_configure_link: fix dev flags changes arg to __dev_notify_flags
  ALSA: hda: Initialize power_state field properly
  crypto: mxs-dcp - fix scatterlist linearization for hash
  btrfs: drop block from cache on error in relocation
  CIFS: Fix bug which the return value by asynchronous read is error
  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
  KVM: nVMX: Properly handle userspace interrupt window request
  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
  PCI: endpoint: Fix for concurrent memory allocation in OB address region
  PCI/ASPM: Clear the correct bits when enabling L1 substates
  nvme-fc: Revert "add module to ops template to allow module references"
  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: hda/realtek - Set principled PC Beep configuration for ALC256
  ALSA: doc: Document PC Beep Hidden Register on Realtek ALC256
  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
  slub: improve bit diffusion for freelist ptr obfuscation
  misc: rtsx: set correct pcr_ops for rts522A
  uapi: rename ext2_swab() to swab() and share globally in swab.h
  btrfs: track reloc roots based on their commit root bytenr
  btrfs: remove a BUG_ON() from merge_reloc_roots()
  block, bfq: fix use-after-free in bfq_idle_slice_timer_body
  locking/lockdep: Avoid recursion in lockdep_count_{for,back}ward_deps()
  irqchip/gic-v4: Provide irq_retrigger to avoid circular locking dependency
  usb: dwc3: core: add support for disabling SS instances in park mode
  block: Fix use-after-free issue accessing struct io_cq
  genirq/irqdomain: Check pointer in irq_domain_alloc_irqs_hierarchy()
  efi/x86: Ignore the memory attributes table on i386
  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()
  PCI/switchtec: Fix init_completion race condition with poll_wait()
  selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault
  sched: Avoid scale real weight down to zero
  irqchip/versatile-fpga: Handle chained IRQs properly
  block: keep bdi->io_pages in sync with max_sectors_kb for stacked devices
  x86: Don't let pgprot_modify() change the page encryption bit
  null_blk: fix spurious IO errors after failed past-wp access
  null_blk: Handle null_add_dev() failures properly
  null_blk: Fix the null_add_dev() error path
  i2c: st: fix missing struct parameter description
  qlcnic: Fix bad kzalloc null test
  cxgb4/ptp: pass the sign of offset delta in FW CMD
  hinic: fix wrong para of wait_for_completion_timeout
  hinic: fix a bug of waitting for IO stopped
  net: vxge: fix wrong __VA_ARGS__ usage
  bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads
  ANDROID: fix wakeup reason findings
  UPSTREAM: gpu/trace: add a gpu total memory usage tracepoint
  CHROMIUM: drm/virtio: rebase zero-copy patches to virgl/drm-misc-next
  CHROMIUM: virtio-gpu: add VIRTIO_GPU_F_RESOURCE_UUID feature
  CHROMIUM: drm/virtgpu: add legacy VIRTIO_GPU_* values for non-upstream variants
  CHROMIUM: drm/virtgpu: fix various warnings
  CHROMIUM: drm/virtgpu: implement metadata allocation ioctl
  CHROMIUM: drm/virtgpu: introduce request IDRs
  CHROMIUM: drm/virtgpu: implement DRM_VIRTGPU_RESOURCE_CREATE_V2
  CHROMIUM: drm/virtgpu: add stub ioctl implementation
  CHROMIUM: drm/virtgpu: check for revelant capabilites
  CHROMIUM: drm/virtgpu: add memory type to virtio_gpu_object_params
  CHROMIUM: drm/virtgpu: make memory and resource creation opaque
  CHROMIUM: virtio-gpu api: VIRTIO_GPU_F_MEMORY
  CHROMIUM: virtwl: store plane info per virtio_gpu_object
  CHROMIUM: drm/virtgpu: expose new ioctls to userspace
  BACKPORT: drm/virtio: move virtio_gpu_object_{attach, detach} calls.
  ANDROID: drm: ttm: Add ttm_tt_create2 driver hook
  UPSTREAM: virtio-gpu api: comment feature flags
  UPSTREAM: drm/virtio: module_param_named() requires linux/moduleparam.h
  BACKPORT: drm/virtio: fix resource id creation race
  BACKPORT: drm/virtio: make resource id workaround runtime switchable.
  BACKPORT: drm/virtio: do NOT reuse resource ids
  BACKPORT: drm/virtio: Drop deprecated load/unload initialization
  f2fs: fix quota_sync failure due to f2fs_lock_op
  f2fs: support read iostat
  f2fs: Fix the accounting of dcc->undiscard_blks
  f2fs: fix to handle error path of f2fs_ra_meta_pages()
  f2fs: report the discard cmd errors properly
  f2fs: fix long latency due to discard during umount
  f2fs: add tracepoint for f2fs iostat
  f2fs: introduce sysfs/data_io_flag to attach REQ_META/FUA
  UPSTREAM: kheaders: include only headers into kheaders_data.tar.xz
  UPSTREAM: kheaders: remove meaningless -R option of 'ls'
  ANDROID: Incremental fs: Fix create_file performance
  ANDROID: Incremental fs: Fix compound page usercopy crash
  ANDROID: Incremental fs: Clean up incfs_test build process
  ANDROID: Incremental fs: make remount log buffer change atomic
  ANDROID: Incremental fs: Optimize get_filled_block
  ANDROID: Incremental fs: Fix mislabeled __user ptrs
  ANDROID: Incremental fs: Use 64-bit int for file_size when writing hash blocks
  Revert "ANDROID: Incremental fs: Fix initialization, use of bitfields"
  Linux 4.14.176
  drm/msm: Use the correct dma_sync calls in msm_gem
  rpmsg: glink: smem: Support rx peak for size less than 4 bytes
  drm_dp_mst_topology: fix broken drm_dp_sideband_parse_remote_dpcd_read()
  usb: dwc3: don't set gadget->is_otg flag
  rpmsg: glink: Remove chunk size word align warning
  arm64: Fix size of __early_cpu_boot_status
  drm/msm: stop abusing dma_map/unmap for cache
  clk: qcom: rcg: Return failure for RCG update
  acpi/nfit: Fix bus command validation
  fbcon: fix null-ptr-deref in fbcon_switch
  RDMA/cm: Update num_paths in cma_resolve_iboe_route error flow
  Bluetooth: RFCOMM: fix ODEBUG bug in rfcomm_dev_ioctl
  ceph: canonicalize server path in place
  ceph: remove the extra slashes in the server path
  IB/hfi1: Fix memory leaks in sysfs registration and unregistration
  IB/hfi1: Call kobject_put() when kobject_init_and_add() fails
  ASoC: jz4740-i2s: Fix divider written at incorrect offset in register
  hwrng: imx-rngc - fix an error path
  tools/accounting/getdelays.c: fix netlink attribute length
  random: always use batched entropy for get_random_u{32,64}
  mlxsw: spectrum_flower: Do not stop at FLOW_ACTION_VLAN_MANGLE
  slcan: Don't transmit uninitialized stack data in padding
  net: stmmac: dwmac1000: fix out-of-bounds mac address reg setting
  net: phy: micrel: kszphy_resume(): add delay after genphy_resume() before accessing PHY registers
  net: dsa: bcm_sf2: Ensure correct sub-node is parsed
  ipv6: don't auto-add link-local address to lag ports
  mm: mempolicy: require at least one nodeid for MPOL_PREFERRED
  padata: always acquire cpu_hotplug_lock before pinst->lock
  coresight: do not use the BIT() macro in the UAPI header
  misc: pci_endpoint_test: Fix to support > 10 pci-endpoint-test devices
  blk-mq: Allow blocking queue tag iter callbacks
  blk-mq: sync the update nr_hw_queues with blk_mq_queue_tag_busy_iter
  drm/etnaviv: replace MMU flush marker with flush sequence
  tools/power turbostat: Fix gcc build warnings
  initramfs: restore default compression behavior
  drm/bochs: downgrade pci_request_region failure from error to warning
  sctp: fix possibly using a bad saddr with a given dst
  sctp: fix refcount bug in sctp_wfree
  net, ip_tunnel: fix interface lookup with no key
  ipv4: fix a RCU-list lock in fib_triestat_seq_show
  ANDROID: power: wakeup_reason: wake reason enhancements
  ubifs: wire up FS_IOC_GET_ENCRYPTION_NONCE
  f2fs: wire up FS_IOC_GET_ENCRYPTION_NONCE
  ext4: wire up FS_IOC_GET_ENCRYPTION_NONCE
  fscrypt: add FS_IOC_GET_ENCRYPTION_NONCE ioctl
  FROMLIST: power_supply: Add additional health properties to the header
  UPSTREAM: power: supply: core: Update sysfs-class-power ABI document
  BACKPORT: FROMGIT: kbuild: mkcompile_h: Include $LD version in /proc/version
  ANDROID: fscrypt: fall back to filesystem-layer crypto when needed
  ANDROID: block: require drivers to declare supported crypto key type(s)
  ANDROID: block: make blk_crypto_start_using_mode() properly check for support
  f2fs: keep inline_data when compression conversion
  f2fs: fix to disable compression on directory
  f2fs: add missing CONFIG_F2FS_FS_COMPRESSION
  f2fs: switch discard_policy.timeout to bool type
  f2fs: fix to verify tpage before releasing in f2fs_free_dic()
  f2fs: show compression in statx
  f2fs: clean up dic->tpages assignment
  f2fs: compress: support zstd compress algorithm
  f2fs: compress: add .{init,destroy}_decompress_ctx callback
  f2fs: compress: fix to call missing destroy_compress_ctx()
  f2fs: change default compression algorithm
  f2fs: clean up {cic,dic}.ref handling
  f2fs: fix to use f2fs_readpage_limit() in f2fs_read_multi_pages()
  f2fs: xattr.h: Make stub helpers inline
  f2fs: fix to avoid double unlock
  f2fs: fix potential .flags overflow on 32bit architecture
  f2fs: fix NULL pointer dereference in f2fs_verity_work()
  f2fs: fix to clear PG_error if fsverity failed
  f2fs: don't call fscrypt_get_encryption_info() explicitly in f2fs_tmpfile()
  f2fs: don't trigger data flush in foreground operation
  f2fs: fix NULL pointer dereference in f2fs_write_begin()
  f2fs: clean up f2fs_may_encrypt()
  f2fs: fix to avoid potential deadlock
  f2fs: don't change inode status under page lock
  f2fs: fix potential deadlock on compressed quota file
  f2fs: delete DIO read lock
  f2fs: don't mark compressed inode dirty during f2fs_iget()
  f2fs: fix to account compressed blocks in f2fs_compressed_blocks()
  f2fs: xattr.h: Replace zero-length array with flexible-array member
  f2fs: fix to update f2fs_super_block fields under sb_lock
  f2fs: Add a new CP flag to help fsck fix resize SPO issues
  f2fs: Fix mount failure due to SPO after a successful online resize FS
  f2fs: use kmem_cache pool during inline xattr lookups
  f2fs: skip migration only when BG_GC is called
  f2fs: fix to show tracepoint correctly
  f2fs: avoid __GFP_NOFAIL in f2fs_bio_alloc
  f2fs: introduce F2FS_IOC_GET_COMPRESS_BLOCKS
  f2fs: fix to avoid triggering IO in write path
  f2fs: add prefix for f2fs slab cache name
  f2fs: introduce DEFAULT_IO_TIMEOUT
  f2fs: skip GC when section is full
  f2fs: add migration count iff migration happens
  f2fs: clean up bggc mount option
  f2fs: clean up lfs/adaptive mount option
  f2fs: fix to show norecovery mount option
  f2fs: clean up parameter of macro XATTR_SIZE()
  f2fs: clean up codes with {f2fs_,}data_blkaddr()
  f2fs: show mounted time
  f2fs: Use scnprintf() for avoiding potential buffer overflow
  f2fs: allow to clear F2FS_COMPR_FL flag
  f2fs: fix to check dirty pages during compressed inode conversion
  f2fs: fix to account compressed inode correctly
  f2fs: fix wrong check on F2FS_IOC_FSSETXATTR
  f2fs: fix to avoid use-after-free in f2fs_write_multi_pages()
  f2fs: fix to avoid using uninitialized variable
  f2fs: fix inconsistent comments
  f2fs: remove i_sem lock coverage in f2fs_setxattr()
  f2fs: cover last_disk_size update with spinlock
  f2fs: fix to check i_compr_blocks correctly
  FROMLIST: kmod: make request_module() return an error when autoloading is disabled
  UPSTREAM: loop: Only freeze block queue when needed.
  UPSTREAM: loop: Only change blocksize when needed.
  ANDROID: Incremental fs: Fix remount
  ANDROID: Incremental fs: Protect get_fill_block, and add a field
  ANDROID: Incremental fs: Fix crash polling 0 size read_log
  ANDROID: Incremental fs: get_filled_blocks: better index_out
  ANDROID: Fix wq fp check for CFI builds
  ANDROID: Incremental fs: Fix four resource bugs
  ANDROID: kbuild: ensure __cfi_check is correctly aligned
  ANDROID: kbuild: fix module linker script flags for LTO
  Linux 4.14.175
  arm64: dts: ls1046ardb: set RGMII interfaces to RGMII_ID mode
  arm64: dts: ls1043a-rdb: correct RGMII delay mode to rgmii-id
  ARM: bcm2835-rpi-zero-w: Add missing pinctrl name
  ARM: dts: oxnas: Fix clear-mask property
  perf map: Fix off by one in strncpy() size argument
  arm64: alternative: fix build with clang integrated assembler
  net: ks8851-ml: Fix IO operations, again
  gpiolib: acpi: Add quirk to ignore EC wakeups on HP x2 10 CHT + AXP288 model
  bpf: Explicitly memset some bpf info structures declared on the stack
  bpf: Explicitly memset the bpf_attr structure
  platform/x86: pmc_atom: Add Lex 2I385SW to critclk_systems DMI table
  vt: vt_ioctl: fix use-after-free in vt_in_use()
  vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console
  vt: vt_ioctl: remove unnecessary console allocation checks
  vt: switch vt_dont_switch to bool
  vt: ioctl, switch VT_IS_IN_USE and VT_BUSY to inlines
  vt: selection, introduce vc_is_sel
  mac80211: fix authentication with iwlwifi/mvm
  mac80211: Check port authorization in the ieee80211_tx_dequeue() case
  media: xirlink_cit: add missing descriptor sanity checks
  media: stv06xx: add missing descriptor sanity checks
  media: dib0700: fix rc endpoint lookup
  media: ov519: add missing endpoint sanity checks
  libfs: fix infoleak in simple_attr_read()
  staging: wlan-ng: fix use-after-free Read in hfa384x_usbin_callback
  staging: wlan-ng: fix ODEBUG bug in prism2sta_disconnect_usb
  staging: rtl8188eu: Add ASUS USB-N10 Nano B1 to device table
  media: usbtv: fix control-message timeouts
  media: flexcop-usb: fix endpoint sanity check
  usb: musb: fix crash with highmen PIO and usbmon
  USB: serial: io_edgeport: fix slab-out-of-bounds read in edge_interrupt_callback
  USB: cdc-acm: restore capability check order
  USB: serial: option: add Wistron Neweb D19Q1
  USB: serial: option: add BroadMobi BM806U
  USB: serial: option: add support for ASKEY WWHC050
  afs: Fix some tracing details
  Input: raydium_i2c_ts - fix error codes in raydium_i2c_boot_trigger()
  Input: raydium_i2c_ts - use true and false for boolean values
  vti6: Fix memory leak of skb if input policy check fails
  netfilter: nft_fwd_netdev: validate family and chain type
  xfrm: policy: Fix doulbe free in xfrm_policy_timer
  xfrm: add the missing verify_sec_ctx_len check in xfrm_add_acquire
  xfrm: fix uctx len check in verify_sec_ctx_len
  RDMA/mlx5: Block delay drop to unprivileged users
  vti[6]: fix packet tx through bpf_redirect() in XinY cases
  xfrm: handle NETDEV_UNREGISTER for xfrm device
  genirq: Fix reference leaks on irq affinity notifiers
  RDMA/core: Ensure security pkey modify is not lost
  gpiolib: acpi: Add quirk to ignore EC wakeups on HP x2 10 BYT + AXP288 model
  gpiolib: acpi: Rework honor_wakeup option into an ignore_wake option
  gpiolib: acpi: Correct comment for HP x2 10 honor_wakeup quirk
  mac80211: mark station unauthorized before key removal
  scsi: sd: Fix optimal I/O size for devices that change reported values
  scripts/dtc: Remove redundant YYLOC global declaration
  tools: Let O= makes handle a relative path with -C option
  perf probe: Do not depend on dwfl_module_addrsym()
  ARM: dts: omap5: Add bus_dma_limit for L3 bus
  ARM: dts: dra7: Add bus_dma_limit for L3 bus
  Input: avoid BIT() macro usage in the serio.h UAPI header
  Input: synaptics - enable RMI on HP Envy 13-ad105ng
  i2c: hix5hd2: add missed clk_disable_unprepare in remove
  ftrace/x86: Anotate text_mutex split between ftrace_arch_code_modify_post_process() and ftrace_arch_code_modify_prepare()
  arm64: compat: map SPSR_ELx<->PSR for signals
  arm64: ptrace: map SPSR_ELx<->PSR for compat tasks
  sxgbe: Fix off by one in samsung driver strncpy size arg
  dpaa_eth: Remove unnecessary boolean expression in dpaa_get_headroom
  mac80211: Do not send mesh HWMP PREQ if HWMP is disabled
  scsi: ipr: Fix softlockup when rescanning devices in petitboot
  fsl/fman: detect FMan erratum A050385
  arm64: dts: ls1043a: FMan erratum A050385
  dt-bindings: net: FMan erratum A050385
  cgroup1: don't call release_agent when it is ""
  drivers/of/of_mdio.c:fix of_mdiobus_register()
  cpupower: avoid multiple definition with gcc -fno-common
  cgroup-v1: cgroup_pidlist_next should update position index
  net: ipv4: don't let PMTU updates increase route MTU
  hsr: set .netnsok flag
  hsr: add restart routine into hsr_get_node_list()
  hsr: use rcu_read_lock() in hsr_get_node_{list/status}()
  vxlan: check return value of gro_cells_init()
  net: dsa: mt7530: Change the LINK bit to reflect the link status
  bnxt_en: fix memory leaks in bnxt_dcbnl_ieee_getets()
  slcan: not call free_netdev before rtnl_unlock in slcan_open
  NFC: fdp: Fix a signedness bug in fdp_nci_send_patch()
  net: stmmac: dwmac-rk: fix error path in rk_gmac_probe
  net_sched: keep alloc_hash updated after hash allocation
  net_sched: cls_route: remove the right filter from hashtable
  net: qmi_wwan: add support for ASKEY WWHC050
  net/packet: tpacket_rcv: avoid a producer race condition
  net: mvneta: Fix the case where the last poll did not process all rx
  net: dsa: Fix duplicate frames flooded by learning
  macsec: restrict to ethernet devices
  hsr: fix general protection fault in hsr_addr_is_self()
  Revert "drm/dp_mst: Skip validating ports during destruction, just ref"
  staging: greybus: loopback_test: fix potential path truncations
  staging: greybus: loopback_test: fix potential path truncation
  drm/bridge: dw-hdmi: fix AVI frame colorimetry
  arm64: smp: fix crash_smp_send_stop() behaviour
  arm64: smp: fix smp_send_stop() behaviour
  ALSA: hda/realtek: Fix pop noise on ALC225
  Revert "ipv6: Fix handling of LLA with VRF and sockets bound to VRF"
  Revert "vrf: mark skb for multicast or link-local as enslaved to VRF"
  futex: Unbreak futex hashing
  futex: Fix inode life-time issue
  kbuild: Disable -Wpointer-to-enum-cast
  iio: adc: at91-sama5d2_adc: fix differential channels in triggered mode
  iio: adc: at91-sama5d2_adc: fix channel configuration for differential channels
  USB: cdc-acm: fix rounding error in TIOCSSERIAL
  USB: cdc-acm: fix close_delay and closing_wait units in TIOCSSERIAL
  x86/mm: split vmalloc_sync_all()
  page-flags: fix a crash at SetPageError(THP_SWAP)
  mm, slub: prevent kmalloc_node crashes and memory leaks
  mm: slub: be more careful about the double cmpxchg of freelist
  memcg: fix NULL pointer dereference in __mem_cgroup_usage_unregister_event
  xhci: Do not open code __print_symbolic() in xhci trace events
  rtc: max8907: add missing select REGMAP_IRQ
  intel_th: pci: Add Elkhart Lake CPU support
  intel_th: Fix user-visible error codes
  staging/speakup: fix get_word non-space look-ahead
  staging: rtl8188eu: Add device id for MERCUSYS MW150US v2
  mmc: sdhci-of-at91: fix cd-gpios for SAMA5D2
  iio: magnetometer: ak8974: Fix negative raw values in sysfs
  iio: trigger: stm32-timer: disable master mode when stopping
  ALSA: pcm: oss: Remove WARNING from snd_pcm_plug_alloc() checks
  ALSA: pcm: oss: Avoid plugin buffer overflow
  ALSA: seq: oss: Fix running status after receiving sysex
  ALSA: seq: virmidi: Fix running status after receiving sysex
  ALSA: line6: Fix endless MIDI read loop
  usb: xhci: apply XHCI_SUSPEND_DELAY to AMD XHCI controller 1022:145c
  USB: serial: pl2303: add device-id for HP LD381
  usb: host: xhci-plat: add a shutdown
  USB: serial: option: add ME910G1 ECM composition 0x110b
  usb: quirks: add NO_LPM quirk for RTL8153 based ethernet adapters
  USB: Disable LPM on WD19's Realtek Hub
  parse-maintainers: Mark as executable
  block, bfq: fix overwrite of bfq_group pointer in bfq_find_set_group()
  xenbus: req->err should be updated before req->state
  xenbus: req->body should be updated before req->state
  dm bio record: save/restore bi_end_io and bi_integrity
  altera-stapl: altera_get_note: prevent write beyond end of 'key'
  drivers/perf: arm_pmu_acpi: Fix incorrect checking of gicc pointer
  drm/exynos: dsi: fix workaround for the legacy clock name
  drm/exynos: dsi: propagate error value and silence meaningless warning
  spi/zynqmp: remove entry that causes a cs glitch
  spi: pxa2xx: Add CS control clock quirk
  ARM: dts: dra7: Add "dma-ranges" property to PCIe RC DT nodes
  powerpc: Include .BTF section
  spi: qup: call spi_qup_pm_resume_runtime before suspending
  UPSTREAM: ubifs: wire up FS_IOC_GET_ENCRYPTION_NONCE
  UPSTREAM: f2fs: wire up FS_IOC_GET_ENCRYPTION_NONCE
  UPSTREAM: ext4: wire up FS_IOC_GET_ENCRYPTION_NONCE
  UPSTREAM: fscrypt: add FS_IOC_GET_ENCRYPTION_NONCE ioctl
  UPSTREAM: usb: raw_gadget: fix compilation warnings in uapi headers
  BACKPORT: usb: gadget: add raw-gadget interface
  UPSTREAM: usb: gadget: move choice ... endchoice to legacy/Kconfig
  ANDROID: clang: update to 10.0.5
  FROMLIST: arm64: define __alloc_zeroed_user_highpage
  ANDROID: Incremental fs: Add INCFS_IOC_GET_FILLED_BLOCKS
  ANDROID: Incremental fs: Fix two typos
  f2fs: fix to avoid potential deadlock
  f2fs: add missing function name in kernel message
  f2fs: recycle unused compress_data.chksum feild
  f2fs: fix to avoid NULL pointer dereference
  f2fs: fix leaking uninitialized memory in compressed clusters
  f2fs: fix the panic in do_checkpoint()
  f2fs: fix to wait all node page writeback
  mm/swapfile.c: move inode_lock out of claim_swapfile
  UPSTREAM: ipv6: ndisc: add support for 'PREF64' dns64 prefix identifier
  UPSTREAM: ipv6: ndisc: add support for 'PREF64' dns64 prefix identifier
  ANDROID: dm-bow: Fix free_show value is incorrect
  UPSTREAM: coresight: Potential uninitialized variable in probe()
  ANDROID: kbuild: do not merge .section..* into .section in modules
  ANDROID: scsi: ufs: add ->map_sg_crypto() variant op
  UPSTREAM: bpf: Explicitly memset some bpf info structures declared on the stack
  UPSTREAM: bpf: Explicitly memset the bpf_attr structure
  Linux 4.14.174
  ipv4: ensure rcu_read_lock() in cipso_v4_error()
  mm: slub: add missing TID bump in kmem_cache_alloc_bulk()
  ARM: 8958/1: rename missed uaccess .fixup section
  ARM: 8957/1: VDSO: Match ARMv8 timer in cntvct_functional()
  jbd2: fix data races at struct journal_head
  net: rmnet: fix NULL pointer dereference in rmnet_newlink()
  hinic: fix a bug of setting hw_ioctxt
  slip: not call free_netdev before rtnl_unlock in slip_open
  signal: avoid double atomic counter increments for user accounting
  mac80211: rx: avoid RCU list traversal under mutex
  net: ks8851-ml: Fix IRQ handling and locking
  net: usb: qmi_wwan: restore mtu min/max values after raw_ip switch
  scsi: libfc: free response frame from GPN_ID
  cfg80211: check reg_rule for NULL in handle_channel_custom()
  HID: i2c-hid: add Trekstor Surfbook E11B to descriptor override
  HID: apple: Add support for recent firmware on Magic Keyboards
  ACPI: watchdog: Allow disabling WDAT at boot
  perf/amd/uncore: Replace manual sampling check with CAP_NO_INTERRUPT flag
  batman-adv: Don't schedule OGM for disabled interface
  batman-adv: Avoid free/alloc race when handling OGM buffer
  batman-adv: Avoid free/alloc race when handling OGM2 buffer
  batman-adv: Fix duplicated OGMs on NETDEV_UP
  batman-adv: Fix debugfs path for renamed softif
  batman-adv: Fix debugfs path for renamed hardif
  batman-adv: prevent TT request storms by not sending inconsistent TT TLVLs
  batman-adv: Fix TT sync flags for intermediate TT responses
  batman-adv: Avoid race in TT TVLV allocator helper
  batman-adv: update data pointers after skb_cow()
  batman-adv: Fix internal interface indices types
  batman-adv: Fix lock for ogm cnt access in batadv_iv_ogm_calc_tq
  batman-adv: Fix check of retrieved orig_gw in batadv_v_gw_is_eligible
  batman-adv: Always initialize fragment header priority
  batman-adv: Avoid spurious warnings from bat_v neigh_cmp implementation
  efi: Add a sanity check to efivar_store_raw()
  net/smc: check for valid ib_client_data
  ipv6: restrict IPV6_ADDRFORM operation
  i2c: acpi: put device when verifying client fails
  iommu/vt-d: Ignore devices with out-of-spec domain number
  iommu/vt-d: Fix the wrong printing in RHSA parsing
  netfilter: nft_payload: add missing attribute validation for payload csum flags
  netfilter: cthelper: add missing attribute validation for cthelper
  nl80211: add missing attribute validation for channel switch
  nl80211: add missing attribute validation for beacon report scanning
  nl80211: add missing attribute validation for critical protocol indication
  pinctrl: core: Remove extra kref_get which blocks hogs being freed
  pinctrl: meson-gxl: fix GPIOX sdio pins
  iommu/vt-d: Fix a bug in intel_iommu_iova_to_phys() for huge page
  iommu/vt-d: dmar: replace WARN_TAINT with pr_warn + add_taint
  iommu/dma: Fix MSI reservation allocation
  x86/mce: Fix logic and comments around MSR_PPIN_CTL
  efi: Fix a race and a buffer overflow while reading efivars via sysfs
  ARC: define __ALIGN_STR and __ALIGN symbols for ARC
  KVM: x86: clear stale x86_emulate_ctxt->intercept value
  gfs2_atomic_open(): fix O_EXCL|O_CREAT handling on cold dcache
  cifs_atomic_open(): fix double-put on late allocation failure
  ktest: Add timeout for ssh sync testing
  drm/amd/display: remove duplicated assignment to grph_obj_type
  workqueue: don't use wq_select_unbound_cpu() for bound works
  iommu/vt-d: quirk_ioat_snb_local_iommu: replace WARN_TAINT with pr_warn + add_taint
  virtio-blk: fix hw_queue stopped on arbitrary error
  iwlwifi: mvm: Do not require PHY_SKU NVM section for 3168 devices
  cgroup: Iterate tasks that did not finish do_exit()
  cgroup: cgroup_procs_next should increase position index
  ipvlan: don't deref eth hdr before checking it's set
  ipvlan: egress mcast packets are not exceptional
  ipvlan: do not add hardware address of master to its unicast filter list
  inet_diag: return classid for all socket types
  macvlan: add cond_resched() during multicast processing
  net: fec: validate the new settings in fec_enet_set_coalesce()
  slip: make slhc_compress() more robust against malicious packets
  bonding/alb: make sure arp header is pulled before accessing it
  net: phy: fix MDIO bus PM PHY resuming
  nfc: add missing attribute validation for vendor subcommand
  nfc: add missing attribute validation for SE API
  team: add missing attribute validation for array index
  team: add missing attribute validation for port ifindex
  net: fq: add missing attribute validation for orphan mask
  macsec: add missing attribute validation for port
  can: add missing attribute validation for termination
  nl802154: add missing attribute validation for dev_type
  nl802154: add missing attribute validation
  fib: add missing attribute validation for tun_id
  net: memcg: fix lockdep splat in inet_csk_accept()
  net: memcg: late association of sock to memcg
  cgroup: memcg: net: do not associate sock with unrelated cgroup
  bnxt_en: reinitialize IRQs when MTU is modified
  sfc: detach from cb_page in efx_copy_channel()
  r8152: check disconnect status after long sleep
  net/packet: tpacket_rcv: do not increment ring index on drop
  net: nfc: fix bounds checking bugs on "pipe"
  net: macsec: update SCI upon MAC address change.
  netlink: Use netlink header as base to calculate bad attribute offset
  ipvlan: do not use cond_resched_rcu() in ipvlan_process_multicast()
  ipvlan: add cond_resched_rcu() while processing muticast backlog
  ipv6/addrconf: call ipv6_mc_up() for non-Ethernet interface
  gre: fix uninit-value in __iptunnel_pull_header
  cgroup, netclassid: periodically release file_lock on classid updating
  net: phy: Avoid multiple suspends
  phy: Revert toggling reset changes.
  ANDROID: Incremental fs: Add INCFS_IOC_PERMIT_FILL
  ANDROID: Incremental fs: Remove signature checks from kernel
  ANDROID: Incremental fs: Pad hash blocks
  ANDROID: Incremental fs: Make fill block an ioctl
  ANDROID: Incremental fs: Remove all access_ok checks
  UPSTREAM: cgroup: Iterate tasks that did not finish do_exit()
  UPSTREAM: arm64: memory: Add missing brackets to untagged_addr() macro
  UPSTREAM: mm: Avoid creating virtual address aliases in brk()/mmap()/mremap()
  ANDROID: Add TPM support and the vTPM proxy to Cuttlefish.
  ANDROID: serdev: restrict claim of platform devices
  UPSTREAM: fscrypt: don't evict dirty inodes after removing key
  fscrypt: don't evict dirty inodes after removing key
  Linux 4.14.173
  ASoC: topology: Fix memleak in soc_tplg_manifest_load()
  xhci: handle port status events for removed USB3 hcd
  dm integrity: fix a deadlock due to offloading to an incorrect workqueue
  powerpc: fix hardware PMU exception bug on PowerVM compatibility mode systems
  dmaengine: coh901318: Fix a double lock bug in dma_tc_handle()
  hwmon: (adt7462) Fix an error return in ADT7462_REG_VOLT()
  ARM: imx: build v7_cpu_resume() unconditionally
  IB/hfi1, qib: Ensure RCU is locked when accessing list
  RMDA/cm: Fix missing ib_cm_destroy_id() in ib_cm_insert_listen()
  RDMA/iwcm: Fix iwcm work deallocation
  ASoC: dapm: Correct DAPM handling of active widgets during shutdown
  ASoC: pcm512x: Fix unbalanced regulator enable call in probe error path
  ASoC: pcm: Fix possible buffer overflow in dpcm state sysfs output
  ASoC: intel: skl: Fix possible buffer overflow in debug outputs
  ASoC: intel: skl: Fix pin debug prints
  ASoC: topology: Fix memleak in soc_tplg_link_elems_load()
  ARM: dts: ls1021a: Restore MDIO compatible to gianfar
  dm cache: fix a crash due to incorrect work item cancelling
  dmaengine: tegra-apb: Prevent race conditions of tasklet vs free list
  dmaengine: tegra-apb: Fix use-after-free
  x86/pkeys: Manually set X86_FEATURE_OSPKE to preserve existing changes
  vt: selection, push sel_lock up
  vt: selection, push console lock down
  vt: selection, close sel_buffer race
  serial: 8250_exar: add support for ACCES cards
  tty:serial:mvebu-uart:fix a wrong return
  arm: dts: dra76x: Fix mmc3 max-frequency
  fat: fix uninit-memory access for partial initialized inode
  mm, numa: fix bad pmd by atomically check for pmd_trans_huge when marking page tables prot_numa
  vgacon: Fix a UAF in vgacon_invert_region
  usb: core: port: do error out if usb_autopm_get_interface() fails
  usb: core: hub: do error out if usb_autopm_get_interface() fails
  usb: core: hub: fix unhandled return by employing a void function
  usb: quirks: add NO_LPM quirk for Logitech Screen Share
  usb: storage: Add quirk for Samsung Fit flash
  cifs: don't leak -EAGAIN for stat() during reconnect
  net: thunderx: workaround BGX TX Underflow issue
  x86/xen: Distribute switch variables for initialization
  nvme: Fix uninitialized-variable warning
  x86/boot/compressed: Don't declare __force_order in kaslr_64.c
  s390/cio: cio_ignore_proc_seq_next should increase position index
  watchdog: da9062: do not ping the hw during stop()
  net: ks8851-ml: Fix 16-bit IO operation
  net: ks8851-ml: Fix 16-bit data access
  net: ks8851-ml: Remove 8-bit bus accessors
  drm/msm/dsi: save pll state before dsi host is powered off
  drm: msm: Fix return type of dsi_mgr_connector_mode_valid for kCFI
  drm/msm/mdp5: rate limit pp done timeout warnings
  usb: gadget: serial: fix Tx stall after buffer overflow
  usb: gadget: ffs: ffs_aio_cancel(): Save/restore IRQ flags
  usb: gadget: composite: Support more than 500mA MaxPower
  selftests: fix too long argument
  serial: ar933x_uart: set UART_CS_{RX,TX}_READY_ORIDE
  kprobes: Fix optimize_kprobe()/unoptimize_kprobe() cancellation logic
  RDMA/core: Fix use of logical OR in get_new_pps
  RDMA/core: Fix pkey and port assignment in get_new_pps
  net: dsa: bcm_sf2: Forcibly configure IMP port for 1Gb/sec
  EDAC/amd64: Set grain per DIMM
  x86/mce: Handle varying MCA bank counts
  vhost: Check docket sk_family instead of call getname
  audit: always check the netlink payload length in audit_receive_msg()
  Revert "char/random: silence a lockdep splat with printk()"
  mm, thp: fix defrag setting if newline is not used
  mm/huge_memory.c: use head to check huge zero page
  perf hists browser: Restore ESC as "Zoom out" of DSO/thread/etc
  kprobes: Set unoptimized flag after unoptimizing code
  drivers: net: xgene: Fix the order of the arguments of 'alloc_etherdev_mqs()'
  tuntap: correctly set SOCKWQ_ASYNC_NOSPACE
  KVM: Check for a bad hva before dropping into the ghc slow path
  KVM: SVM: Override default MMIO mask if memory encryption is enabled
  mwifiex: drop most magic numbers from mwifiex_process_tdls_action_frame()
  namei: only return -ECHILD from follow_dotdot_rcu()
  net: ena: make ena rxfh support ETH_RSS_HASH_NO_CHANGE
  net: atlantic: fix potential error handling
  net: netlink: cap max groups which will be considered in netlink_bind()
  include/linux/bitops.h: introduce BITS_PER_TYPE
  ecryptfs: Fix up bad backport of fe2e082f5da5b4a0a92ae32978f81507ef37ec66
  usb: charger: assign specific number for enum value
  drm/i915/gvt: Separate display reset from ALL_ENGINES reset
  i2c: jz4780: silence log flood on txabrt
  i2c: altera: Fix potential integer overflow
  MIPS: VPE: Fix a double free and a memory leak in 'release_vpe()'
  HID: hiddev: Fix race in in hiddev_disconnect()
  Revert "PM / devfreq: Modify the device name as devfreq(X) for sysfs"
  tracing: Disable trace_printk() on post poned tests
  HID: core: increase HID report buffer size to 8KiB
  HID: core: fix off-by-one memset in hid_report_raw_event()
  HID: ite: Only bind to keyboard USB interface on Acer SW5-012 keyboard dock
  KVM: VMX: check descriptor table exits on instruction emulation
  ACPI: watchdog: Fix gas->access_width usage
  ACPICA: Introduce ACPI_ACCESS_BYTE_WIDTH() macro
  audit: fix error handling in audit_data_to_entry()
  ext4: potential crash on allocation error in ext4_alloc_flex_bg_array()
  net: sched: correct flower port blocking
  qede: Fix race between rdma destroy workqueue and link change event
  ipv6: Fix route replacement with dev-only route
  ipv6: Fix nlmsg_flags when splitting a multipath route
  sctp: move the format error check out of __sctp_sf_do_9_1_abort
  nfc: pn544: Fix occasional HW initialization failure
  net: phy: restore mdio regs in the iproc mdio driver
  net: fib_rules: Correctly set table field when table number exceeds 8 bits
  sysrq: Remove duplicated sysrq message
  sysrq: Restore original console_loglevel when sysrq disabled
  cfg80211: add missing policy for NL80211_ATTR_STATUS_CODE
  cifs: Fix mode output in debugging statements
  net: ena: ena-com.c: prevent NULL pointer dereference
  net: ena: ethtool: use correct value for crc32 hash
  net: ena: fix incorrectly saving queue numbers when setting RSS indirection table
  net: ena: rss: store hash function as values and not bits
  net: ena: rss: fix failure to get indirection table
  net: ena: fix incorrect default RSS key
  net: ena: add missing ethtool TX timestamping indication
  net: ena: fix uses of round_jiffies()
  net: ena: fix potential crash when rxfh key is NULL
  qmi_wwan: unconditionally reject 2 ep interfaces
  qmi_wwan: re-add DW5821e pre-production variant
  cfg80211: check wiphy driver existence for drvinfo report
  mac80211: consider more elements in parsing CRC
  dax: pass NOWAIT flag to iomap_apply
  drm/msm: Set dma maximum segment size for mdss
  ipmi:ssif: Handle a possible NULL pointer reference
  ext4: fix potential race between s_group_info online resizing and access
  ext4: fix potential race between s_flex_groups online resizing and access
  ext4: fix potential race between online resizing and write operations
  netfilter: nf_conntrack: resolve clash for matching conntracks
  iwlwifi: pcie: fix rb_allocator workqueue allocation
  FROMLIST: f2fs: fix wrong check on F2FS_IOC_FSSETXATTR
  UPSTREAM: binder: prevent UAF for binderfs devices II
  UPSTREAM: binder: prevent UAF for binderfs devices
  FROMLIST: lib: test_stackinit.c: XFAIL switch variable init tests
  ANDROID: cuttlefish: disable KPROBES
  ANDROID: scsi: ufs: allow ufs variants to override sg entry size
  FROMLIST: ufs: fix a bug on printing PRDT
  BACKPORT: loop: Add LOOP_SET_BLOCK_SIZE in compat ioctl
  ANDROID: fix build issue in security/selinux/avc.c
  ANDROID: cuttlefish_defconfig: Disable CONFIG_RT_GROUP_SCHED
  ANDROID: Enable HID_NINTENDO as y
  FROMLIST: HID: nintendo: add nintendo switch controller driver
  Linux 4.14.172
  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
  genirq/proc: Reject invalid affinity masks (again)
  iommu/vt-d: Fix compile warning from intel-svm.h
  ecryptfs: replace BUG_ON with error handling code
  staging: greybus: use after free in gb_audio_manager_remove_all()
  staging: rtl8723bs: fix copy of overlapping memory
  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
  btrfs: do not check delayed items are empty for single transaction cleanup
  btrfs: fix bytes_may_use underflow in prealloc error condtition
  KVM: apic: avoid calculating pending eoi from an uninitialized val
  KVM: nVMX: handle nested posted interrupts when apicv is disabled for L1
  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
  KVM: nVMX: Don't emulate instructions in guest mode
  lib/stackdepot.c: fix global out-of-bounds in stack_slabs
  serial: 8250: Check UPF_IRQ_SHARED in advance
  vt: vt_ioctl: fix race in VT_RESIZEX
  VT_RESIZEX: get rid of field-by-field copyin
  xhci: apply XHCI_PME_STUCK_QUIRK to Intel Comet Lake platforms
  KVM: x86: don't notify userspace IOAPIC on edge-triggered interrupt EOI
  drm/amdgpu/soc15: fix xclk for raven
  mm/vmscan.c: don't round up scan size for online memory cgroup
  Revert "ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()"
  MAINTAINERS: Update drm/i915 bug filing URL
  serdev: ttyport: restore client ops on deregistration
  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: rtl8723bs: Fix potential overuse of kernel memory
  staging: rtl8723bs: Fix potential security hole
  staging: rtl8188eu: Fix potential overuse of kernel memory
  staging: rtl8188eu: Fix potential security hole
  USB: hub: Fix the broken detection of USB3 device in SMSC hub
  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
  usb: host: xhci: update event ring dequeue pointer on purpose
  xhci: fix runtime pm enabling for quirky Intel hosts
  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
  USB: misc: iowarrior: add support for the 100 device
  USB: misc: iowarrior: add support for the 28 and 28L devices
  USB: misc: iowarrior: add support for 2 OEMed devices
  thunderbolt: Prevent crash if non-active NVMem file is read
  net/smc: fix leak of kernel memory to user space
  net/sched: flower: add missing validation of TCA_FLOWER_FLAGS
  net/sched: matchall: add missing validation of TCA_MATCHALL_FLAGS
  net: dsa: tag_qca: Make sure there is headroom for tag
  enic: prevent waking up stopped tx queues over watchdog reset
  selinux: ensure we cleanup the internal AVC counters on error in avc_update()
  mlxsw: spectrum_dpipe: Add missing error path
  virtio_balloon: prevent pfn array overflow
  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
  ceph: check availability of mds cluster on mount after wait timeout
  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: make sure ESHUTDOWN to be recorded in the journal superblock
  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
  ALSA: hda/hdmi - add retry logic to parse_intel_hdmi()
  irqchip/mbigen: Set driver .suppress_bind_attrs to avoid remove problems
  remoteproc: Initialize rproc_class before use
  btrfs: device stats, log when stats are zeroed
  btrfs: safely advance counter when looking up bio csums
  btrfs: fix possible NULL-pointer dereference in integrity checks
  pwm: Remove set but not set variable 'pwm'
  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
  x86/mm: Fix NX bit clearing issue in kernel_map_pages_in_pgd
  f2fs: fix memleak of kobject
  watchdog/softlockup: Enforce that timestamp is valid on boot
  arm64: fix alternatives with LLVM's integrated assembler
  scsi: iscsi: Don't destroy session if there are outstanding connections
  f2fs: free sysfs kobject
  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
  drm/nouveau/secboot/gm20b: initialize pointer in gm20b_secboot_new()
  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
  efi/x86: Don't panic or BUG() on non-critical error conditions
  soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
  IB/hfi1: Add software counter for ctxt0 seq drop
  udf: Fix free space reporting for metadata and virtual partitions
  usbip: Fix unsafe unaligned pointer usage
  drm: remove the newline for CRC source name.
  tools lib api fs: Fix gcc9 stringop-truncation compilation error
  ALSA: sh: Fix compile warning wrt const
  ALSA: sh: Fix unused variable warnings
  clk: sunxi-ng: add mux and pll notifiers for A64 CPU clock
  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
  dmaengine: Store module owner in dma_device struct
  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
  scsi: ufs: Complete pending requests in host reset and restore path
  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
  fore200e: Fix incorrect checks of NULL pointer dereference
  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
  ARM: dts: imx6: rdu2: Disable WP for USDHC2 and USDHC3
  arm64: dts: qcom: msm8996: Disable USB2 PHY suspend by core
  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
  KVM: s390: ENOTSUPP -> EOPNOTSUPP fixups
  nbd: add a flush_workqueue in nbd_start_device
  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
  kselftest: Minimise dependency of get_size on C library interfaces
  clocksource/drivers/bcm2835_timer: Fix memory leak of timer
  usb: dwc2: Fix IN FIFO allocation
  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()
  char/random: silence a lockdep splat with printk()
  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
  ALSA: ctl: allow TLV read operation for callback type of element in locked case
  ext4: fix ext4_dax_read/write inode locking sequence for IOCB_NOWAIT
  leds: pca963x: Fix open-drain initialization
  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
  KVM: nVMX: Use correct root level for nested EPT shadow page tables
  Revert "KVM: VMX: Add non-canonical check on writes to RTIT address MSRs"
  Revert "KVM: nVMX: Use correct root level for nested EPT shadow page tables"
  scsi: qla2xxx: fix a potential NULL pointer dereference
  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
  RDMA/core: Fix protection fault in get_pkey_idx_qp_list
  IB/hfi1: Close window for pq and request coliding
  serial: imx: Only handle irqs that are actually enabled
  serial: imx: ensure that RX irqs are off if RX is off
  padata: Remove broken queue flushing
  perf/x86/amd: Add missing L2 misses event spec to AMD Family 17h's event map
  KVM: nVMX: Use correct root level for nested EPT shadow page tables
  arm64: ssbs: Fix context-switch when SSBS is present on all CPUs
  btrfs: log message when rw remount is attempted with unclean tree-log
  btrfs: print message when tree-log replay starts
  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: fix support for inode sizes > 1024 bytes
  ext4: don't assume that mmp_nodename/bdevname have NUL
  ARM: 8723/2: always assume the "unified" syntax for assembly code
  arm64: nofpsimd: Handle TIF_FOREIGN_FPSTATE flag cleanly
  arm64: ptrace: nofpsimd: Fail FP/SIMD regset operations
  arm64: cpufeature: Set the FP/SIMD compat HWCAP bits properly
  ALSA: usb-audio: Apply sample rate quirk for Audioengine D1
  Input: synaptics - remove the LEN0049 dmi id from topbuttonpad list
  Input: synaptics - enable SMBus on ThinkPad L470
  Input: synaptics - switch T470s to RMI4 by default
  ecryptfs: fix a memory leak bug in ecryptfs_init_messaging()
  ecryptfs: fix a memory leak bug in parse_tag_1_packet()
  ASoC: sun8i-codec: Fix setting DAI data format
  ALSA: hda: Use scnprintf() for printing texts for sysfs/procfs
  iommu/qcom: Fix bogus detach logic
  KVM: x86: emulate RDPID
  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
  FROMLIST: f2fs: Handle casefolding with Encryption
  FROMLIST: fscrypt: Have filesystems handle their d_ops
  FROMLIST: ext4: Use generic casefolding support
  FROMLIST: f2fs: Use generic casefolding support
  FROMLIST: Add standard casefolding support
  FROMLIST: unicode: Add utf8_casefold_hash
  ANDROID: cuttlefish_defconfig: Add CONFIG_UNICODE
  ANDROID: sdcardfs: fix -ENOENT lookup race issue
  ANDROID: gki_defconfig: Enable CONFIG_RD_LZ4
  ANDROID: dm: Add wrapped key support in dm-default-key
  ANDROID: dm: add support for passing through derive_raw_secret
  ANDROID: block: Prevent crypto fallback for wrapped keys
  ANDROID: Disable wq fp check in CFI builds
  ANDROID: increase limit on sched-tune boost groups
  ANDROID: ufs, block: fix crypto power management and move into block layer
  ANDROID: Incremental fs: Support xattrs
  ANDROID: test_stackinit: work around LLVM PR44916
  ANDROID: clang: update to 10.0.4
  fs-verity: use u64_to_user_ptr()
  fs-verity: use mempool for hash requests
  fs-verity: implement readahead of Merkle tree pages
  ext4: readpages() should submit IO as read-ahead
  fs-verity: implement readahead for FS_IOC_ENABLE_VERITY
  fscrypt: improve format of no-key names
  ubifs: allow both hash and disk name to be provided in no-key names
  ubifs: don't trigger assertion on invalid no-key filename
  fscrypt: clarify what is meant by a per-file key
  fscrypt: derive dirhash key for casefolded directories
  fscrypt: don't allow v1 policies with casefolding
  fscrypt: add "fscrypt_" prefix to fname_encrypt()
  fscrypt: don't print name of busy file when removing key
  fscrypt: document gfp_flags for bounce page allocation
  fscrypt: optimize fscrypt_zeroout_range()
  fscrypt: remove redundant bi_status check
  fscrypt: Allow modular crypto algorithms
  fscrypt: include <linux/ioctl.h> in UAPI header
  fscrypt: don't check for ENOKEY from fscrypt_get_encryption_info()
  fscrypt: remove fscrypt_is_direct_key_policy()
  fscrypt: move fscrypt_valid_enc_modes() to policy.c
  fscrypt: check for appropriate use of DIRECT_KEY flag earlier
  fscrypt: split up fscrypt_supported_policy() by policy version
  fscrypt: introduce fscrypt_needs_contents_encryption()
  fscrypt: move fscrypt_d_revalidate() to fname.c
  fscrypt: constify inode parameter to filename encryption functions
  fscrypt: constify struct fscrypt_hkdf parameter to fscrypt_hkdf_expand()
  fscrypt: verify that the crypto_skcipher has the correct ivsize
  fscrypt: use crypto_skcipher_driver_name()
  fscrypt: support passing a keyring key to FS_IOC_ADD_ENCRYPTION_KEY
  keys: Export lookup_user_key to external users
  f2fs: fix build error on PAGE_KERNEL_RO

 Conflicts:
	arch/arm64/kernel/smp.c
	arch/arm64/kernel/traps.c
	block/blk-crypto-fallback.c
	block/keyslot-manager.c
	drivers/base/power/wakeup.c
	drivers/clk/clk.c
	drivers/clk/qcom/clk-rcg2.c
	drivers/gpu/Makefile
	drivers/gpu/drm/msm/msm_drv.c
	drivers/gpu/drm/msm/msm_gem.c
	drivers/hwtracing/coresight/coresight-funnel.c
	drivers/irqchip/irq-gic-v3.c
	drivers/md/dm.c
	drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
	drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c
	drivers/net/macsec.c
	drivers/net/phy/micrel.c
	drivers/net/wireless/ath/wil6210/cfg80211.c
	drivers/net/wireless/ath/wil6210/fw_inc.c
	drivers/net/wireless/ath/wil6210/pcie_bus.c
	drivers/net/wireless/ath/wil6210/pm.c
	drivers/net/wireless/ath/wil6210/wil6210.h
	drivers/of/base.c
	drivers/power/supply/power_supply_sysfs.c
	drivers/rpmsg/qcom_glink_smem.c
	drivers/scsi/sd.c
	drivers/scsi/ufs/ufshcd-crypto.c
	drivers/scsi/ufs/ufshcd.c
	drivers/scsi/ufs/ufshcd.h
	drivers/scsi/ufs/ufshci.h
	drivers/usb/dwc3/core.c
	drivers/usb/dwc3/gadget.c
	drivers/usb/gadget/Kconfig
	drivers/usb/gadget/composite.c
	drivers/usb/gadget/function/f_fs.c
	drivers/usb/gadget/legacy/Makefile
	drivers/usb/host/xhci-mem.c
	fs/ext4/readpage.c
	fs/sdcardfs/lookup.c
	include/linux/key.h
	include/linux/keyslot-manager.h
	include/linux/power_supply.h
	include/uapi/linux/coresight-stm.h
	net/qrtr/qrtr.c

Change-Id: Iaa9fcbe987e721f02596e167249a519781ed3888
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
2020-08-05 11:41:56 +05:30
Greg Kroah-Hartman
a810d3c5bf Merge 4.14.178 into android-4.14-stable
Changes in 4.14.178
	ext4: fix extent_status fragmentation for plain files
	net: ipv4: emulate READ_ONCE() on ->hdrincl bit-field in raw_sendmsg()
	net: ipv4: avoid unused variable warning for sysctl
	keys: Fix the use of the C++ keyword "private" in uapi/linux/keyctl.h
	drm/msm: Use the correct dma_sync calls harder
	crypto: mxs-dcp - make symbols 'sha1_null_hash' and 'sha256_null_hash' static
	vti4: removed duplicate log message.
	watchdog: reset last_hw_keepalive time at start
	scsi: lpfc: Fix kasan slab-out-of-bounds error in lpfc_unreg_login
	ceph: return ceph_mdsc_do_request() errors from __get_parent()
	ceph: don't skip updating wanted caps when cap is stale
	pwm: rcar: Fix late Runtime PM enablement
	scsi: iscsi: Report unbind session event when the target has been removed
	ASoC: Intel: atom: Take the drv->lock mutex before calling sst_send_slot_map()
	kernel/gcov/fs.c: gcov_seq_next() should increase position index
	selftests: kmod: fix handling test numbers above 9
	ipc/util.c: sysvipc_find_ipc() should increase position index
	s390/cio: avoid duplicated 'ADD' uevents
	pwm: renesas-tpu: Fix late Runtime PM enablement
	pwm: bcm2835: Dynamically allocate base
	perf/core: Disable page faults when getting phys address
	PCI/ASPM: Allow re-enabling Clock PM
	mm, slub: restore the original intention of prefetch_freepointer()
	cxgb4: fix large delays in PTP synchronization
	ipv6: fix restrict IPV6_ADDRFORM operation
	macsec: avoid to set wrong mtu
	macvlan: fix null dereference in macvlan_device_event()
	net: bcmgenet: correct per TX/RX ring statistics
	net: netrom: Fix potential nr_neigh refcnt leak in nr_add_node
	net/x25: Fix x25_neigh refcnt leak when receiving frame
	tcp: cache line align MAX_TCP_HEADER
	team: fix hang in team_mode_get()
	net: dsa: b53: Fix ARL register definitions
	xfrm: Always set XFRM_TRANSFORMED in xfrm{4,6}_output_finish
	vrf: Check skb for XFRM_TRANSFORMED flag
	KEYS: Avoid false positive ENOMEM error on key read
	ALSA: hda: Remove ASUS ROG Zenith from the blacklist
	iio: adc: stm32-adc: fix sleep in atomic context
	iio: xilinx-xadc: Fix ADC-B powerdown
	iio: xilinx-xadc: Fix clearing interrupt when enabling trigger
	iio: xilinx-xadc: Fix sequencer configuration for aux channels in simultaneous mode
	fs/namespace.c: fix mountpoint reference counter race
	USB: sisusbvga: Change port variable from signed to unsigned
	USB: Add USB_QUIRK_DELAY_CTRL_MSG and USB_QUIRK_DELAY_INIT for Corsair K70 RGB RAPIDFIRE
	USB: early: Handle AMD's spec-compliant identifiers, too
	USB: core: Fix free-while-in-use bug in the USB S-Glibrary
	USB: hub: Fix handling of connect changes during sleep
	overflow.h: Add arithmetic shift helper
	vmalloc: fix remap_vmalloc_range() bounds checks
	mm/hugetlb: fix a addressing exception caused by huge_pte_offset
	mm/ksm: fix NULL pointer dereference when KSM zero page is enabled
	tools/vm: fix cross-compile build
	ALSA: usx2y: Fix potential NULL dereference
	ALSA: hda/realtek - Add new codec supported for ALC245
	ALSA: usb-audio: Fix usb audio refcnt leak when getting spdif
	ALSA: usb-audio: Filter out unsupported sample rates on Focusrite devices
	tpm/tpm_tis: Free IRQ if probing fails
	tpm: ibmvtpm: retry on H_CLOSED in tpm_ibmvtpm_send()
	KVM: Check validity of resolved slot when searching memslots
	KVM: VMX: Enable machine check support for 32bit targets
	tty: hvc: fix buffer overflow during hvc_alloc().
	tty: rocket, avoid OOB access
	usb-storage: Add unusual_devs entry for JMicron JMS566
	audit: check the length of userspace generated audit records
	ASoC: dapm: fixup dapm kcontrol widget
	iwlwifi: pcie: actually release queue memory in TVQM
	ARM: imx: provide v7_cpu_resume() only on ARM_CPU_SUSPEND=y
	powerpc/setup_64: Set cache-line-size based on cache-block-size
	staging: comedi: dt2815: fix writing hi byte of analog output
	staging: comedi: Fix comedi_device refcnt leak in comedi_open
	vt: don't hardcode the mem allocation upper bound
	staging: vt6656: Don't set RCR_MULTICAST or RCR_BROADCAST by default.
	staging: vt6656: Fix calling conditions of vnt_set_bss_mode
	staging: vt6656: Fix drivers TBTT timing counter.
	staging: vt6656: Fix pairwise key entry save.
	staging: vt6656: Power save stop wake_up_count wrap around.
	cdc-acm: close race betrween suspend() and acm_softint
	cdc-acm: introduce a cool down
	UAS: no use logging any details in case of ENODEV
	UAS: fix deadlock in error handling and PM flushing work
	usb: f_fs: Clear OS Extended descriptor counts to zero in ffs_data_reset()
	serial: sh-sci: Make sure status register SCxSR is read in correct sequence
	xfs: validate sb_logsunit is a multiple of the fs blocksize
	xfs: Fix deadlock between AGI and AGF with RENAME_WHITEOUT
	remoteproc: Fix wrong rvring index computation
	mtd: cfi: fix deadloop in cfi_cmdset_0002.c do_write_buffer
	include/uapi/linux/swab.h: fix userspace breakage, use __BITS_PER_LONG for swap
	binder: take read mode of mmap_sem in binder_alloc_free_page()
	usb: dwc3: gadget: Do link recovery for SS and SSP
	usb: gadget: udc: bdc: Remove unnecessary NULL checks in bdc_req_complete
	iio:ad7797: Use correct attribute_group
	nfsd: memory corruption in nfsd4_lock()
	i2c: altera: use proper variable to hold errno
	net/cxgb4: Check the return from t4_query_params properly
	ARM: dts: bcm283x: Disable dsi0 node
	perf/core: fix parent pid/tid in task exit events
	mm: shmem: disable interrupt when acquiring info->lock in userfaultfd_copy path
	bpf, x86: Fix encoding for lower 8-bit registers in BPF_STX BPF_B
	x86: hyperv: report value of misc_features
	xfs: fix partially uninitialized structure in xfs_reflink_remap_extent
	scsi: target: fix PR IN / READ FULL STATUS for FC
	objtool: Fix CONFIG_UBSAN_TRAP unreachable warnings
	objtool: Support Clang non-section symbols in ORC dump
	xen/xenbus: ensure xenbus_map_ring_valloc() returns proper grant status
	arm64: Delete the space separator in __emit_inst
	ext4: use matching invalidatepage in ext4_writepage
	ext4: increase wait time needed before reuse of deleted inode numbers
	ext4: convert BUG_ON's to WARN_ON's in mballoc.c
	hwmon: (jc42) Fix name to have no illegal characters
	ext4: avoid declaring fs inconsistent due to invalid file handles
	ext4: protect journal inode's blocks using block_validity
	ext4: don't perform block validity checks on the journal inode
	ext4: fix block validity checks for journal inodes using indirect blocks
	ext4: unsigned int compared against zero
	qed: Fix use after free in qed_chain_free
	ext4: check for non-zero journal inum in ext4_calculate_overhead
	propagate_one(): mnt_set_mountpoint() needs mount_lock
	Linux 4.14.178

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ia3d4a2b883413346daf1779820545cb0b0e35948
2020-05-03 08:51:19 +02:00
Jann Horn
e5de393402 vmalloc: fix remap_vmalloc_range() bounds checks
commit bdebd6a2831b6fab69eb85cee74a8ba77f1a1cc2 upstream.

remap_vmalloc_range() has had various issues with the bounds checks it
promises to perform ("This function checks that addr is a valid
vmalloc'ed area, and that it is big enough to cover the vma") over time,
e.g.:

 - not detecting pgoff<<PAGE_SHIFT overflow

 - not detecting (pgoff<<PAGE_SHIFT)+usize overflow

 - not checking whether addr and addr+(pgoff<<PAGE_SHIFT) are the same
   vmalloc allocation

 - comparing a potentially wildly out-of-bounds pointer with the end of
   the vmalloc region

In particular, since commit fc9702273e2e ("bpf: Add mmap() support for
BPF_MAP_TYPE_ARRAY"), unprivileged users can cause kernel null pointer
dereferences by calling mmap() on a BPF map with a size that is bigger
than the distance from the start of the BPF map to the end of the
address space.

This could theoretically be used as a kernel ASLR bypass, by using
whether mmap() with a given offset oopses or returns an error code to
perform a binary search over the possible address range.

To allow remap_vmalloc_range_partial() to verify that addr and
addr+(pgoff<<PAGE_SHIFT) are in the same vmalloc region, pass the offset
to remap_vmalloc_range_partial() instead of adding it to the pointer in
remap_vmalloc_range().

In remap_vmalloc_range_partial(), fix the check against
get_vm_area_size() by using size comparisons instead of pointer
comparisons, and add checks for pgoff.

Fixes: 833423143c ("[PATCH] mm: introduce remap_vmalloc_range()")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: stable@vger.kernel.org
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: Andrii Nakryiko <andriin@fb.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: KP Singh <kpsingh@chromium.org>
Link: http://lkml.kernel.org/r/20200415222312.236431-1-jannh@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-02 17:24:21 +02:00
Greg Kroah-Hartman
95495cdf37 Merge 4.14.177 into android-4.14-stable
Changes in 4.14.177
	bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads
	net: vxge: fix wrong __VA_ARGS__ usage
	hinic: fix a bug of waitting for IO stopped
	hinic: fix wrong para of wait_for_completion_timeout
	cxgb4/ptp: pass the sign of offset delta in FW CMD
	qlcnic: Fix bad kzalloc null test
	i2c: st: fix missing struct parameter description
	null_blk: Fix the null_add_dev() error path
	null_blk: Handle null_add_dev() failures properly
	null_blk: fix spurious IO errors after failed past-wp access
	x86: Don't let pgprot_modify() change the page encryption bit
	block: keep bdi->io_pages in sync with max_sectors_kb for stacked devices
	irqchip/versatile-fpga: Handle chained IRQs properly
	sched: Avoid scale real weight down to zero
	selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault
	PCI/switchtec: Fix init_completion race condition with poll_wait()
	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
	efi/x86: Ignore the memory attributes table on i386
	genirq/irqdomain: Check pointer in irq_domain_alloc_irqs_hierarchy()
	block: Fix use-after-free issue accessing struct io_cq
	usb: dwc3: core: add support for disabling SS instances in park mode
	irqchip/gic-v4: Provide irq_retrigger to avoid circular locking dependency
	locking/lockdep: Avoid recursion in lockdep_count_{for,back}ward_deps()
	block, bfq: fix use-after-free in bfq_idle_slice_timer_body
	btrfs: remove a BUG_ON() from merge_reloc_roots()
	btrfs: track reloc roots based on their commit root bytenr
	uapi: rename ext2_swab() to swab() and share globally in swab.h
	misc: rtsx: set correct pcr_ops for rts522A
	slub: improve bit diffusion for freelist ptr obfuscation
	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
	ALSA: doc: Document PC Beep Hidden Register on Realtek ALC256
	ALSA: hda/realtek - Set principled PC Beep configuration for ALC256
	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
	nvme-fc: Revert "add module to ops template to allow module references"
	PCI/ASPM: Clear the correct bits when enabling L1 substates
	PCI: endpoint: Fix for concurrent memory allocation in OB address region
	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: nVMX: Properly handle userspace interrupt window request
	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
	CIFS: Fix bug which the return value by asynchronous read is error
	btrfs: drop block from cache on error in relocation
	crypto: mxs-dcp - fix scatterlist linearization for hash
	ALSA: hda: Initialize power_state field properly
	net: rtnl_configure_link: fix dev flags changes arg to __dev_notify_flags
	powerpc/pseries: Drop pointless static qualifier in vpa_debugfs_init()
	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
	NFS: Fix a page leak in nfs_destroy_unlinked_subrequests()
	ext4: fix a data race at inode->i_blocks
	fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()
	ocfs2: no need try to truncate file beyond i_size
	perf tools: Support Python 3.8+ in Makefile
	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/powernv/idle: Restore AMR/UAMOR/AMOR after idle
	powerpc/64/tm: Don't let userspace set regs->trap via sigreturn
	powerpc/hash64/devmap: Use H_PAGE_THP_HUGE when setting up huge devmap PTE entries
	powerpc/xive: Use XIVE_BAD_IRQ instead of zero to catch non configured IPIs
	powerpc/kprobes: Ignore traps that happened in real mode
	scsi: mpt3sas: Fix kernel panic observed on soft HBA unplug
	powerpc: Add attributes for setjmp/longjmp
	powerpc: Make setjmp/longjmp signature standard
	Btrfs: fix crash during unmount due to race with delayed inode workers
	btrfs: use nofs allocations for running delayed items
	dm zoned: remove duplicate nr_rnd_zones increase in dmz_init_zone()
	crypto: caam - update xts sector size for large input length
	drm/dp_mst: Fix clearing payload state on topology disable
	drm: Remove PageReserved manipulation from drm_pci_alloc
	ftrace/kprobe: Show the maxactive number on kprobe_events
	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
	amd-xgbe: Use __napi_schedule() in BH context
	hsr: check protocol version in hsr_newlink()
	net: ipv4: devinet: Fix crash when add/del multicast IP with autojoin
	net: ipv6: do not consider routes via gateways for anycast address check
	net: qrtr: send msgs from local of same id as broadcast
	net: revert default NAPI poll timeout to 2 jiffies
	net: stmmac: dwmac-sunxi: Provide TX and RX fifo sizes
	scsi: ufs: Fix ufshcd_hold() caused scheduling while atomic
	jbd2: improve comments about freeing data buffers whose page mapping is NULL
	pwm: pca9685: Fix PWM/GPIO inter-operation
	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
	tracing: Fix the race between registering 'snapshot' event trigger and triggering 'snapshot' operation
	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
	x86/microcode/AMD: Increase microcode PATCH_MAX_SIZE
	x86/intel_rdt: Enumerate L2 Code and Data Prioritization (CDP) feature
	x86/intel_rdt: Add two new resources for L2 Code and Data Prioritization (CDP)
	x86/intel_rdt: Enable L2 CDP in MSR IA32_L2_QOS_CFG
	x86/resctrl: Preserve CDP enable over CPU hotplug
	x86/resctrl: Fix invalid attempt at removing the default resource group
	mm/vmalloc.c: move 'area->pages' after if statement
	objtool: Fix switch table detection in .text.unlikely
	scsi: sg: add sg_remove_request in sg_common_write
	ext4: use non-movable memory for superblock readahead
	arm, bpf: Fix bugs with ALU64 {RSH, ARSH} BPF_K shift by 0
	netfilter: nf_tables: report EOPNOTSUPP on unsupported flags/object type
	irqchip/mbigen: Free msi_desc on device teardown
	ALSA: hda: Don't release card at firmware loading error
	lib/raid6: use vdupq_n_u8 to avoid endianness warnings
	video: fbdev: sis: Remove unnecessary parentheses and commented code
	drm: NULL pointer dereference [null-pointer-deref] (CWE 476) problem
	clk: Fix debugfs_create_*() usage
	Revert "gpio: set up initial state from .get_direction()"
	arm64: perf: remove unsupported events for Cortex-A73
	arm64: traps: Don't print stack or raw PC/LR values in backtraces
	arch_topology: Fix section miss match warning due to free_raw_capacity()
	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
	rpmsg: glink: use put_device() if device_register fail
	rtc: pm8xxx: Fix issue in RTC write path
	rpmsg: glink: Fix missing mutex_init() in qcom_glink_alloc_channel()
	rpmsg: glink: smem: Ensure ordering during tx
	wil6210: fix PCIe bus mastering in case of interface down
	wil6210: add block size checks during FW load
	wil6210: fix length check in __wmi_send
	wil6210: abort properly in cfg suspend
	soc: qcom: smem: Use le32_to_cpu for comparison
	of: fix missing kobject init for !SYSFS && OF_DYNAMIC config
	rbd: avoid a deadlock on header_rwsem when flushing notifies
	rbd: call rbd_dev_unprobe() after unwatching and flushing notifies
	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
	soc: imx: gpc: fix power up sequencing
	rtc: 88pm860x: fix possible race condition
	NFSv4/pnfs: Return valid stateids in nfs_layout_find_inode_by_stateid()
	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
	include/linux/swapops.h: correct guards for non_swap_entry()
	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
	x86: ACPI: fix CPU hotplug deadlock
	drm/amdkfd: kfree the wrong pointer
	NFS: Fix memory leaks in nfs_pageio_stop_mirroring()
	iommu/vt-d: Fix mm reference leak
	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
	net: dsa: bcm_sf2: Fix overflow checks
	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
	KEYS: Use individual pages in big_key for crypto buffers
	KEYS: Don't write out to userspace while holding key semaphore
	Linux 4.14.177

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I5eb89921eb63ee9e92a031fc6f3a10d9e2616358
2020-04-24 08:41:10 +02:00
Austin Kim
a9ef63657e mm/vmalloc.c: move 'area->pages' after if statement
commit 7ea362427c170061b8822dd41bafaa72b3bcb9ad upstream.

If !area->pages statement is true where memory allocation fails, area is
freed.

In this case 'area->pages = pages' should not executed.  So move
'area->pages = pages' after if statement.

[akpm@linux-foundation.org: give area->pages the same treatment]
Link: http://lkml.kernel.org/r/20190830035716.GA190684@LGEARND20B15
Signed-off-by: Austin Kim <austindh.kim@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Roman Penyaev <rpenyaev@suse.de>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-24 08:01:00 +02:00
Greg Kroah-Hartman
fae4e1d295 Merge 4.14.175 into android-4.14
Changes in 4.14.175
	spi: qup: call spi_qup_pm_resume_runtime before suspending
	powerpc: Include .BTF section
	ARM: dts: dra7: Add "dma-ranges" property to PCIe RC DT nodes
	spi: pxa2xx: Add CS control clock quirk
	spi/zynqmp: remove entry that causes a cs glitch
	drm/exynos: dsi: propagate error value and silence meaningless warning
	drm/exynos: dsi: fix workaround for the legacy clock name
	drivers/perf: arm_pmu_acpi: Fix incorrect checking of gicc pointer
	altera-stapl: altera_get_note: prevent write beyond end of 'key'
	dm bio record: save/restore bi_end_io and bi_integrity
	xenbus: req->body should be updated before req->state
	xenbus: req->err should be updated before req->state
	block, bfq: fix overwrite of bfq_group pointer in bfq_find_set_group()
	parse-maintainers: Mark as executable
	USB: Disable LPM on WD19's Realtek Hub
	usb: quirks: add NO_LPM quirk for RTL8153 based ethernet adapters
	USB: serial: option: add ME910G1 ECM composition 0x110b
	usb: host: xhci-plat: add a shutdown
	USB: serial: pl2303: add device-id for HP LD381
	usb: xhci: apply XHCI_SUSPEND_DELAY to AMD XHCI controller 1022:145c
	ALSA: line6: Fix endless MIDI read loop
	ALSA: seq: virmidi: Fix running status after receiving sysex
	ALSA: seq: oss: Fix running status after receiving sysex
	ALSA: pcm: oss: Avoid plugin buffer overflow
	ALSA: pcm: oss: Remove WARNING from snd_pcm_plug_alloc() checks
	iio: trigger: stm32-timer: disable master mode when stopping
	iio: magnetometer: ak8974: Fix negative raw values in sysfs
	mmc: sdhci-of-at91: fix cd-gpios for SAMA5D2
	staging: rtl8188eu: Add device id for MERCUSYS MW150US v2
	staging/speakup: fix get_word non-space look-ahead
	intel_th: Fix user-visible error codes
	intel_th: pci: Add Elkhart Lake CPU support
	rtc: max8907: add missing select REGMAP_IRQ
	xhci: Do not open code __print_symbolic() in xhci trace events
	memcg: fix NULL pointer dereference in __mem_cgroup_usage_unregister_event
	mm: slub: be more careful about the double cmpxchg of freelist
	mm, slub: prevent kmalloc_node crashes and memory leaks
	page-flags: fix a crash at SetPageError(THP_SWAP)
	x86/mm: split vmalloc_sync_all()
	USB: cdc-acm: fix close_delay and closing_wait units in TIOCSSERIAL
	USB: cdc-acm: fix rounding error in TIOCSSERIAL
	iio: adc: at91-sama5d2_adc: fix channel configuration for differential channels
	iio: adc: at91-sama5d2_adc: fix differential channels in triggered mode
	kbuild: Disable -Wpointer-to-enum-cast
	futex: Fix inode life-time issue
	futex: Unbreak futex hashing
	Revert "vrf: mark skb for multicast or link-local as enslaved to VRF"
	Revert "ipv6: Fix handling of LLA with VRF and sockets bound to VRF"
	ALSA: hda/realtek: Fix pop noise on ALC225
	arm64: smp: fix smp_send_stop() behaviour
	arm64: smp: fix crash_smp_send_stop() behaviour
	drm/bridge: dw-hdmi: fix AVI frame colorimetry
	staging: greybus: loopback_test: fix potential path truncation
	staging: greybus: loopback_test: fix potential path truncations
	Revert "drm/dp_mst: Skip validating ports during destruction, just ref"
	hsr: fix general protection fault in hsr_addr_is_self()
	macsec: restrict to ethernet devices
	net: dsa: Fix duplicate frames flooded by learning
	net: mvneta: Fix the case where the last poll did not process all rx
	net/packet: tpacket_rcv: avoid a producer race condition
	net: qmi_wwan: add support for ASKEY WWHC050
	net_sched: cls_route: remove the right filter from hashtable
	net_sched: keep alloc_hash updated after hash allocation
	net: stmmac: dwmac-rk: fix error path in rk_gmac_probe
	NFC: fdp: Fix a signedness bug in fdp_nci_send_patch()
	slcan: not call free_netdev before rtnl_unlock in slcan_open
	bnxt_en: fix memory leaks in bnxt_dcbnl_ieee_getets()
	net: dsa: mt7530: Change the LINK bit to reflect the link status
	vxlan: check return value of gro_cells_init()
	hsr: use rcu_read_lock() in hsr_get_node_{list/status}()
	hsr: add restart routine into hsr_get_node_list()
	hsr: set .netnsok flag
	net: ipv4: don't let PMTU updates increase route MTU
	cgroup-v1: cgroup_pidlist_next should update position index
	cpupower: avoid multiple definition with gcc -fno-common
	drivers/of/of_mdio.c:fix of_mdiobus_register()
	cgroup1: don't call release_agent when it is ""
	dt-bindings: net: FMan erratum A050385
	arm64: dts: ls1043a: FMan erratum A050385
	fsl/fman: detect FMan erratum A050385
	scsi: ipr: Fix softlockup when rescanning devices in petitboot
	mac80211: Do not send mesh HWMP PREQ if HWMP is disabled
	dpaa_eth: Remove unnecessary boolean expression in dpaa_get_headroom
	sxgbe: Fix off by one in samsung driver strncpy size arg
	arm64: ptrace: map SPSR_ELx<->PSR for compat tasks
	arm64: compat: map SPSR_ELx<->PSR for signals
	ftrace/x86: Anotate text_mutex split between ftrace_arch_code_modify_post_process() and ftrace_arch_code_modify_prepare()
	i2c: hix5hd2: add missed clk_disable_unprepare in remove
	Input: synaptics - enable RMI on HP Envy 13-ad105ng
	Input: avoid BIT() macro usage in the serio.h UAPI header
	ARM: dts: dra7: Add bus_dma_limit for L3 bus
	ARM: dts: omap5: Add bus_dma_limit for L3 bus
	perf probe: Do not depend on dwfl_module_addrsym()
	tools: Let O= makes handle a relative path with -C option
	scripts/dtc: Remove redundant YYLOC global declaration
	scsi: sd: Fix optimal I/O size for devices that change reported values
	mac80211: mark station unauthorized before key removal
	gpiolib: acpi: Correct comment for HP x2 10 honor_wakeup quirk
	gpiolib: acpi: Rework honor_wakeup option into an ignore_wake option
	gpiolib: acpi: Add quirk to ignore EC wakeups on HP x2 10 BYT + AXP288 model
	RDMA/core: Ensure security pkey modify is not lost
	genirq: Fix reference leaks on irq affinity notifiers
	xfrm: handle NETDEV_UNREGISTER for xfrm device
	vti[6]: fix packet tx through bpf_redirect() in XinY cases
	RDMA/mlx5: Block delay drop to unprivileged users
	xfrm: fix uctx len check in verify_sec_ctx_len
	xfrm: add the missing verify_sec_ctx_len check in xfrm_add_acquire
	xfrm: policy: Fix doulbe free in xfrm_policy_timer
	netfilter: nft_fwd_netdev: validate family and chain type
	vti6: Fix memory leak of skb if input policy check fails
	Input: raydium_i2c_ts - use true and false for boolean values
	Input: raydium_i2c_ts - fix error codes in raydium_i2c_boot_trigger()
	afs: Fix some tracing details
	USB: serial: option: add support for ASKEY WWHC050
	USB: serial: option: add BroadMobi BM806U
	USB: serial: option: add Wistron Neweb D19Q1
	USB: cdc-acm: restore capability check order
	USB: serial: io_edgeport: fix slab-out-of-bounds read in edge_interrupt_callback
	usb: musb: fix crash with highmen PIO and usbmon
	media: flexcop-usb: fix endpoint sanity check
	media: usbtv: fix control-message timeouts
	staging: rtl8188eu: Add ASUS USB-N10 Nano B1 to device table
	staging: wlan-ng: fix ODEBUG bug in prism2sta_disconnect_usb
	staging: wlan-ng: fix use-after-free Read in hfa384x_usbin_callback
	libfs: fix infoleak in simple_attr_read()
	media: ov519: add missing endpoint sanity checks
	media: dib0700: fix rc endpoint lookup
	media: stv06xx: add missing descriptor sanity checks
	media: xirlink_cit: add missing descriptor sanity checks
	mac80211: Check port authorization in the ieee80211_tx_dequeue() case
	mac80211: fix authentication with iwlwifi/mvm
	vt: selection, introduce vc_is_sel
	vt: ioctl, switch VT_IS_IN_USE and VT_BUSY to inlines
	vt: switch vt_dont_switch to bool
	vt: vt_ioctl: remove unnecessary console allocation checks
	vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console
	vt: vt_ioctl: fix use-after-free in vt_in_use()
	platform/x86: pmc_atom: Add Lex 2I385SW to critclk_systems DMI table
	bpf: Explicitly memset the bpf_attr structure
	bpf: Explicitly memset some bpf info structures declared on the stack
	gpiolib: acpi: Add quirk to ignore EC wakeups on HP x2 10 CHT + AXP288 model
	net: ks8851-ml: Fix IO operations, again
	arm64: alternative: fix build with clang integrated assembler
	perf map: Fix off by one in strncpy() size argument
	ARM: dts: oxnas: Fix clear-mask property
	ARM: bcm2835-rpi-zero-w: Add missing pinctrl name
	arm64: dts: ls1043a-rdb: correct RGMII delay mode to rgmii-id
	arm64: dts: ls1046ardb: set RGMII interfaces to RGMII_ID mode
	Linux 4.14.175

Change-Id: If2c2cb5b3745ed6fbc5cb77737cfb1758fea4cb9
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2020-04-03 08:18:27 +02:00
Joerg Roedel
c3cf92fd9b x86/mm: split vmalloc_sync_all()
commit 763802b53a427ed3cbd419dbba255c414fdd9e7c upstream.

Commit 3f8fd02b1bf1 ("mm/vmalloc: Sync unmappings in
__purge_vmap_area_lazy()") introduced a call to vmalloc_sync_all() in
the vunmap() code-path.  While this change was necessary to maintain
correctness on x86-32-pae kernels, it also adds additional cycles for
architectures that don't need it.

Specifically on x86-64 with CONFIG_VMAP_STACK=y some people reported
severe performance regressions in micro-benchmarks because it now also
calls the x86-64 implementation of vmalloc_sync_all() on vunmap().  But
the vmalloc_sync_all() implementation on x86-64 is only needed for newly
created mappings.

To avoid the unnecessary work on x86-64 and to gain the performance
back, split up vmalloc_sync_all() into two functions:

	* vmalloc_sync_mappings(), and
	* vmalloc_sync_unmappings()

Most call-sites to vmalloc_sync_all() only care about new mappings being
synchronized.  The only exception is the new call-site added in the
above mentioned commit.

Shile Zhang directed us to a report of an 80% regression in reaim
throughput.

Fixes: 3f8fd02b1bf1 ("mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()")
Reported-by: kernel test robot <oliver.sang@intel.com>
Reported-by: Shile Zhang <shile.zhang@linux.alibaba.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Borislav Petkov <bp@suse.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>	[GHES]
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20191009124418.8286-1-joro@8bytes.org
Link: https://lists.01.org/hyperkitty/list/lkp@lists.01.org/thread/4D3JPPHBNOSPFK2KEPC6KGKS6J25AIDB/
Link: http://lkml.kernel.org/r/20191113095530.228959-1-shile.zhang@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-02 16:34:20 +02:00
Susheel Khiani
b5ae9223ce msm: Increase the kernel virtual area to include lowmem
Even though lowmem is accounted for in vmalloc space,
allocation comes only from the region bounded by
VMALLOC_START and VMALLOC_END. The kernel virtual area
can now allocate from any unmapped region starting
from PAGE_OFFSET.

Change-Id: I291b9eb443d3f7445fd979bd7b09e9241ff22ba3
Signed-off-by: Neeti Desai <neetid@codeaurora.org>
Signed-off-by: Susheel Khiani <skhiani@codeaurora.org>
2019-12-31 00:40:42 -08:00
Susheel Khiani
a5ebe3b356 mm: Update is_vmalloc_addr to account for vmalloc savings
is_vmalloc_addr currently assumes that all vmalloc addresses
exist between VMALLOC_START and VMALLOC_END. This may not be
the case when interleaving vmalloc and lowmem. Update the
is_vmalloc_addr to properly check for this.

Correspondingly we need to ensure that VMALLOC_TOTAL accounts
for all the vmalloc regions when CONFIG_ENABLE_VMALLOC_SAVING
is enabled.

Change-Id: I5def3d6ae1a4de59ea36f095b8c73649a37b1f36
Signed-off-by: Susheel Khiani <skhiani@codeaurora.org>
Signed-off-by: Zhenhua Huang <zhenhuah@codeaurora.org>
2019-12-26 22:32:23 -08:00
Susheel Khiani
03307a0339 msm: Allow lowmem to be non contiguous and mixed
Currently on 32 bit systems, virtual space above
PAGE_OFFSET is reserved for direct mapped lowmem
and part of virtual address space is reserved for
vmalloc. We want to optimize such as to have as
much direct mapped memory as possible since there is
penalty for mapping/unmapping highmem. Now, we may
have an image that is expected to have a lifetime of
the entire system and is reserved in physical region
that would be part of direct mapped lowmem. The
physical memory which is thus reserved is never used
by Linux. This means that even though the system is
not actually accessing the  virtual memory
corresponding to the reserved physical memory, we
are still losing that portion of direct mapped lowmem
space.

So by allowing lowmem to be non contiguous we can
give this unused virtual address space of reserved
region back for use in vmalloc.

Change-Id: I980b3dfafac71884dcdcb8cd2e4a6363cde5746a
Signed-off-by: Susheel Khiani <skhiani@codeaurora.org>
2019-12-10 14:33:29 +08:00
Roman Gushchin
248a268ad1 UPSTREAM: mm: vmalloc: show number of vmalloc pages in /proc/meminfo
Vmalloc() is getting more and more used these days (kernel stacks, bpf and
percpu allocator are new top users), and the total % of memory consumed by
vmalloc() can be pretty significant and changes dynamically.

/proc/meminfo is the best place to display this information: its top goal
is to show top consumers of the memory.

Since the VmallocUsed field in /proc/meminfo is not in use for quite a
long time (it has been defined to 0 by a5ad88ce8c ("mm: get rid of
'vmalloc_info' from /proc/meminfo")), let's reuse it for showing the
actual physical memory consumption of vmalloc().

Link: http://lkml.kernel.org/r/20190417194002.12369-3-guro@fb.com
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 97105f0ab7b877a8ece2005e214894e93793950c)
Signed-off-by: Minchan Kim <minchan@google.com>
Bug: 141257998
Test: "cat /proc/meminfo | grep VmallocUsed" doesn't show 0 any longer
Change-Id: Ia4316c68507e68cda3175af41db09b16edd1fc51
2019-10-14 20:10:03 +00:00
Liviu Dudau
c6a8796eac mm/vmalloc.c: don't dereference possible NULL pointer in __vunmap()
find_vmap_area() can return a NULL pointer and we're going to
dereference it without checking it first.  Use the existing
find_vm_area() function which does exactly what we want and checks for
the NULL pointer.

Change-Id: I9b58c7423edb7927b64b722de886f8bc98c5f9ca
Git-commit: 6ade20327dbb808882888ed8ccded71e93067cf9
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Link: http://lkml.kernel.org/r/20181228171009.22269-1-liviu@dudau.co.uk
Fixes: f3c01d2f3ade ("mm: vmalloc: avoid racy handling of debugobjects in vunmap")
Signed-off-by: Liviu Dudau <liviu@dudau.co.uk>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Chintan Pandya <cpandya@codeaurora.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Prakruthi Deepak Heragu <pheragu@codeaurora.org>
2019-10-10 11:15:58 -07:00
Blagovest Kolenichev
058cce55d2 Merge android-4.14-q.139 (7752db43) into msm-4.14
* refs/heads/tmp-7752db43:
  Linux 4.14.139
  iwlwifi: mvm: fix version check for GEO_TX_POWER_LIMIT support
  iwlwifi: mvm: don't send GEO_TX_POWER_LIMIT on version < 41
  iwlwifi: mvm: fix an out-of-bound access
  iwlwifi: don't unmap as page memory that was mapped as single
  mwifiex: fix 802.11n/WPA detection
  KVM: Fix leak vCPU's VMCS value into other pCPU
  NFSv4: Fix an Oops in nfs4_do_setattr
  NFSv4: Only pass the delegation to setattr if we're sending a truncate
  smb3: send CAP_DFS capability during session setup
  SMB3: Fix deadlock in validate negotiate hits reconnect
  mac80211: don't WARN on short WMM parameters from AP
  ALSA: hda - Workaround for crackled sound on AMD controller (1022:1457)
  ALSA: hda - Don't override global PCM hw info flag
  ALSA: firewire: fix a memory leak bug
  drm/i915: Fix wrong escape clock divisor init for GLK
  hwmon: (nct7802) Fix wrong detection of in4 presence
  can: peak_usb: pcan_usb_fd: Fix info-leaks to USB devices
  can: peak_usb: pcan_usb_pro: Fix info-leaks to USB devices
  HID: sony: Fix race condition between rumble and device remove.
  perf/core: Fix creating kernel counters for PMUs that override event->cpu
  tty/ldsem, locking/rwsem: Add missing ACQUIRE to read_failed sleep loop
  test_firmware: fix a memory leak bug
  scsi: scsi_dh_alua: always use a 2 second delay before retrying RTPG
  scsi: ibmvfc: fix WARN_ON during event pool release
  scsi: megaraid_sas: fix panic on loading firmware crashdump
  ARM: davinci: fix sleep.S build error on ARMv4
  ACPI/IORT: Fix off-by-one check in iort_dev_find_its_id()
  drbd: dynamically allocate shash descriptor
  perf probe: Avoid calling freeing routine multiple times for same pointer
  perf tools: Fix proper buffer size for feature processing
  ALSA: compress: Be more restrictive about when a drain is allowed
  ALSA: compress: Don't allow paritial drain operations on capture streams
  ALSA: compress: Prevent bypasses of set_params
  ALSA: compress: Fix regression on compressed capture streams
  s390/qdio: add sanity checks to the fast-requeue path
  cpufreq/pasemi: fix use-after-free in pas_cpufreq_cpu_init()
  drm: silence variable 'conn' set but not used
  hwmon: (nct6775) Fix register address and added missed tolerance for nct6106
  mac80211: don't warn about CW params when not using them
  iscsi_ibft: make ISCSI_IBFT dependson ACPI instead of ISCSI_IBFT_FIND
  scripts/sphinx-pre-install: fix script for RHEL/CentOS
  netfilter: nft_hash: fix symhash with modulus one
  netfilter: Fix rpfilter dropping vrf packets by mistake
  vfio-ccw: Set pa_nr to 0 if memory allocation fails for pa_iova_pfn
  netfilter: nfnetlink: avoid deadlock due to synchronous request_module
  can: peak_usb: fix potential double kfree_skb()
  can: rcar_canfd: fix possible IRQ storm on high load
  usb: yurex: Fix use-after-free in yurex_delete
  usb: host: xhci-rcar: Fix timeout in xhci_suspend()
  perf record: Fix module size on s390
  perf db-export: Fix thread__exec_comm()
  perf annotate: Fix s390 gap between kernel end and module start
  mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()
  x86/mm: Sync also unmappings in vmalloc_sync_all()
  x86/mm: Check for pfn instead of page in vmalloc_sync_one()
  tcp: Clear sk_send_head after purging the write queue
  crypto: ccp - Add support for valid authsize values less than 16
  crypto: ccp - Validate buffer lengths for copy operations
  lkdtm: support llvm-objcopy
  Input: synaptics - enable RMI mode for HP Spectre X360
  loop: set PF_MEMALLOC_NOIO for the worker thread
  mmc: cavium: Add the missing dma unmap when the dma has finished.
  mmc: cavium: Set the correct dma max segment size for mmc_host
  sound: fix a memory leak bug
  usb: iowarrior: fix deadlock on disconnect
  usb: usbfs: fix double-free of usb memory upon submiturb error
  crypto: ccp - Ignore tag length when decrypting GCM ciphertext
  crypto: ccp - Fix oops by properly managing allocated structures
  iio: adc: max9611: Fix misuse of GENMASK macro

Conflicts:
	sound/core/compress_offload.c

Change-Id: I9b66d7c612a0dc9f6fd5ffd670335e3bb65b6999
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
2019-08-20 04:54:15 -07:00
Joerg Roedel
a0436bfe8e mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()
commit 3f8fd02b1bf1d7ba964485a56f2f4b53ae88c167 upstream.

On x86-32 with PTI enabled, parts of the kernel page-tables are not shared
between processes. This can cause mappings in the vmalloc/ioremap area to
persist in some page-tables after the region is unmapped and released.

When the region is re-used the processes with the old mappings do not fault
in the new mappings but still access the old ones.

This causes undefined behavior, in reality often data corruption, kernel
oopses and panics and even spontaneous reboots.

Fix this problem by activly syncing unmaps in the vmalloc/ioremap area to
all page-tables in the system before the regions can be re-used.

References: https://bugzilla.suse.com/show_bug.cgi?id=1118689
Fixes: 5d72b4fba4 ('x86, mm: support huge I/O mapping capability I/F')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lkml.kernel.org/r/20190719184652.11391-4-joro@8bytes.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-16 10:13:48 +02:00
Blagovest Kolenichev
5d880f1ba0 Merge android-4.14.111 (171fc23) into msm-4.14
* refs/heads/tmp-171fc23:
  Revert "usb: dwc3: gadget: Fix OTG events when gadget driver isn't loaded"
  Revert "coresight: etm4x: Add support to enable ETMv4.2"
  Linux 4.14.111
  ACPI / video: Extend chassis-type detection with a "Lunch Box" check
  drm/dp/mst: Configure no_stop_bit correctly for remote i2c xfers
  dmaengine: tegra: avoid overflow of byte tracking
  clk: rockchip: fix frac settings of GPLL clock for rk3328
  x86/build: Mark per-CPU symbols as absolute explicitly for LLD
  wlcore: Fix memory leak in case wl12xx_fetch_firmware failure
  selinux: do not override context on context mounts
  x86/build: Specify elf_i386 linker emulation explicitly for i386 objects
  drm/nouveau: Stop using drm_crtc_force_disable
  drm: Auto-set allow_fb_modifiers when given modifiers at plane init
  regulator: act8865: Fix act8600_sudcdc_voltage_ranges setting
  media: s5p-jpeg: Check for fmt_ver_flag when doing fmt enumeration
  netfilter: physdev: relax br_netfilter dependency
  dmaengine: qcom_hidma: initialize tx flags in hidma_prep_dma_*
  dmaengine: qcom_hidma: assign channel cookie correctly
  dmaengine: imx-dma: fix warning comparison of distinct pointer types
  cpu/hotplug: Mute hotplug lockdep during init
  hpet: Fix missing '=' character in the __setup() code of hpet_mmap_enable
  HID: intel-ish: ipc: handle PIMR before ish_wakeup also clear PISR busy_clear bit
  soc/tegra: fuse: Fix illegal free of IO base address
  hwrng: virtio - Avoid repeated init of completion
  media: mt9m111: set initial frame size other than 0x0
  usb: dwc3: gadget: Fix OTG events when gadget driver isn't loaded
  powerpc/pseries: Perform full re-add of CPU for topology update post-migration
  tty: increase the default flip buffer limit to 2*640K
  backlight: pwm_bl: Use gpiod_get_value_cansleep() to get initial state
  cgroup/pids: turn cgroup_subsys->free() into cgroup_subsys->release() to fix the accounting
  bpf: fix missing prototype warnings
  ARM: avoid Cortex-A9 livelock on tight dmb loops
  ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of
  mt7601u: bump supported EEPROM version
  soc: qcom: gsbi: Fix error handling in gsbi_probe()
  efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted
  ARM: dts: lpc32xx: Remove leading 0x and 0s from bindings notation
  efi/memattr: Don't bail on zero VA if it equals the region's PA
  sched/debug: Initialize sd_sysctl_cpus if !CONFIG_CPUMASK_OFFSTACK
  ASoC: fsl-asoc-card: fix object reference leaks in fsl_asoc_card_probe
  platform/x86: intel_pmc_core: Fix PCH IP sts reading
  e1000e: fix cyclic resets at link up with active tx
  cdrom: Fix race condition in cdrom_sysctl_register
  fbdev: fbmem: fix memory access if logo is bigger than the screen
  iw_cxgb4: fix srqidx leak during connection abort
  genirq: Avoid summation loops for /proc/stat
  bcache: improve sysfs_strtoul_clamp()
  bcache: fix input overflow to sequential_cutoff
  bcache: fix input overflow to cache set sysfs file io_error_halflife
  sched/topology: Fix percpu data types in struct sd_data & struct s_data
  usb: f_fs: Avoid crash due to out-of-scope stack ptr access
  ALSA: PCM: check if ops are defined before suspending PCM
  ARM: 8833/1: Ensure that NEON code always compiles with Clang
  netfilter: conntrack: fix cloned unconfirmed skb->_nfct race in __nf_conntrack_confirm
  kprobes: Prohibit probing on bsearch()
  ACPI / video: Refactor and fix dmi_is_desktop()
  iwlwifi: pcie: fix emergency path
  leds: lp55xx: fix null deref on firmware load failure
  jbd2: fix race when writing superblock
  HID: intel-ish-hid: avoid binding wrong ishtp_cl_device
  vfs: fix preadv64v2 and pwritev64v2 compat syscalls with offset == -1
  media: mtk-jpeg: Correct return type for mem2mem buffer helpers
  media: mx2_emmaprp: Correct return type for mem2mem buffer helpers
  media: s5p-g2d: Correct return type for mem2mem buffer helpers
  media: s5p-jpeg: Correct return type for mem2mem buffer helpers
  media: sh_veu: Correct return type for mem2mem buffer helpers
  SoC: imx-sgtl5000: add missing put_device()
  perf test: Fix failure of 'evsel-tp-sched' test on s390
  scsi: fcoe: make use of fip_mode enum complete
  scsi: megaraid_sas: return error when create DMA pool failed
  efi: cper: Fix possible out-of-bounds access
  cpufreq: acpi-cpufreq: Report if CPU doesn't support boost technologies
  clk: fractional-divider: check parent rate only if flag is set
  IB/mlx4: Increase the timeout for CM cache
  mlxsw: spectrum: Avoid -Wformat-truncation warnings
  e1000e: Fix -Wformat-truncation warnings
  mmc: omap: fix the maximum timeout setting
  powerpc/hugetlb: Handle mmap_min_addr correctly in get_unmapped_area callback
  iommu/io-pgtable-arm-v7s: Only kmemleak_ignore L2 tables
  ARM: 8840/1: use a raw_spinlock_t in unwind
  serial: 8250_pxa: honor the port number from devicetree
  coresight: etm4x: Add support to enable ETMv4.2
  powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc
  scsi: core: replace GFP_ATOMIC with GFP_KERNEL in scsi_scan.c
  usb: chipidea: Grab the (legacy) USB PHY by phandle first
  crypto: cavium/zip - fix collision with generic cra_driver_name
  crypto: crypto4xx - add missing of_node_put after of_device_is_available
  wil6210: check null pointer in _wil_cfg80211_merge_extra_ies
  PCI/PME: Fix hotplug/sysfs remove deadlock in pcie_pme_remove()
  tools lib traceevent: Fix buffer overflow in arg_eval
  fs: fix guard_bio_eod to check for real EOD errors
  jbd2: fix invalid descriptor block checksum
  cifs: Fix NULL pointer dereference of devname
  dm thin: add sanity checks to thin-pool and external snapshot creation
  cifs: use correct format characters
  page_poison: play nicely with KASAN
  fs/file.c: initialize init_files.resize_wait
  f2fs: do not use mutex lock in atomic context
  ocfs2: fix a panic problem caused by o2cb_ctl
  mm/slab.c: kmemleak no scan alien caches
  mm/vmalloc.c: fix kernel BUG at mm/vmalloc.c:512!
  mm, mempolicy: fix uninit memory access
  mm/page_ext.c: fix an imbalance with kmemleak
  mm/cma.c: cma_declare_contiguous: correct err handling
  perf c2c: Fix c2c report for empty numa node
  iio: adc: fix warning in Qualcomm PM8xxx HK/XOADC driver
  scsi: hisi_sas: Set PHY linkrate when disconnected
  enic: fix build warning without CONFIG_CPUMASK_OFFSTACK
  sysctl: handle overflow for file-max
  include/linux/relay.h: fix percpu annotation in struct rchan
  gpio: gpio-omap: fix level interrupt idling
  net/mlx5: Avoid panic when setting vport mac, getting vport config
  net/mlx5: Avoid panic when setting vport rate
  tracing: kdb: Fix ftdump to not sleep
  f2fs: fix to avoid deadlock in f2fs_read_inline_dir()
  h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux-
  CIFS: fix POSIX lock leak and invalid ptr deref
  mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified
  tty/serial: atmel: RS485 HD w/DMA: enable RX after TX is stopped
  tty/serial: atmel: Add is_half_duplex helper
  lib/int_sqrt: optimize initial value compute
  ext4: cleanup bh release code in ext4_ind_remove_space()
  arm64: debug: Don't propagate UNKNOWN FAR into si_code for debug signals
  ANDROID: cuttlefish_defconfig: Enable CONFIG_OVERLAY_FS
  ANDROID: cuttlefish: enable CONFIG_NET_SCH_INGRESS=y

Conflicts:
	drivers/usb/gadget/function/f_fs.c
	mm/page_alloc.c
	net/netfilter/nf_conntrack_core.c

Change-Id: I4a3db0717eb4f0f0d89e57f3167129bcd2419599
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
2019-05-15 08:16:13 -07:00
Blagovest Kolenichev
070370f0ae Merge android-4.14.108 (4344de2) into msm-4.14
* refs/heads/tmp-4344de2:
  Linux 4.14.108
  s390/setup: fix boot crash for machine without EDAT-1
  KVM: nVMX: Ignore limit checks on VMX instructions using flat segments
  KVM: nVMX: Apply addr size mask to effective address for VMX instructions
  KVM: nVMX: Sign extend displacements of VMX instr's mem operands
  KVM: x86/mmu: Do not cache MMIO accesses while memslots are in flux
  KVM: x86/mmu: Detect MMIO generation wrap in any address space
  KVM: Call kvm_arch_memslots_updated() before updating memslots
  drm/radeon/evergreen_cs: fix missing break in switch statement
  media: imx: csi: Stop upstream before disabling IDMA channel
  media: imx: csi: Disable CSI immediately after last EOF
  media: vimc: Add vimc-streamer for stream control
  media: uvcvideo: Avoid NULL pointer dereference at the end of streaming
  media: imx: prpencvf: Stop upstream before disabling IDMA channel
  rcu: Do RCU GP kthread self-wakeup from softirq and interrupt
  tpm: Unify the send callback behaviour
  tpm/tpm_crb: Avoid unaligned reads in crb_recv()
  md: Fix failed allocation of md_register_thread
  perf intel-pt: Fix divide by zero when TSC is not available
  perf intel-pt: Fix overlap calculation for padding
  perf auxtrace: Define auxtrace record alignment
  perf intel-pt: Fix CYC timestamp calculation after OVF
  x86/unwind/orc: Fix ORC unwind table alignment
  bcache: never writeback a discard operation
  PM / wakeup: Rework wakeup source timer cancellation
  NFSv4.1: Reinitialise sequence results before retransmitting a request
  nfsd: fix wrong check in write_v4_end_grace()
  nfsd: fix memory corruption caused by readdir
  NFS: Don't recoalesce on error in nfs_pageio_complete_mirror()
  NFS: Fix an I/O request leakage in nfs_do_recoalesce
  NFS: Fix I/O request leakages
  cpcap-charger: generate events for userspace
  dm integrity: limit the rate of error messages
  dm: fix to_sector() for 32bit
  arm64: KVM: Fix architecturally invalid reset value for FPEXC32_EL2
  arm64: debug: Ensure debug handlers check triggering exception level
  arm64: Fix HCR.TGE status for NMI contexts
  ARM: s3c24xx: Fix boolean expressions in osiris_dvs_notify
  powerpc/traps: Fix the message printed when stack overflows
  powerpc/traps: fix recoverability of machine check handling on book3s/32
  powerpc/hugetlb: Don't do runtime allocation of 16G pages in LPAR configuration
  powerpc/ptrace: Simplify vr_get/set() to avoid GCC warning
  powerpc: Fix 32-bit KVM-PR lockup and host crash with MacOS guest
  powerpc/83xx: Also save/restore SPRG4-7 during suspend
  powerpc/powernv: Make opal log only readable by root
  powerpc/wii: properly disable use of BATs when requested.
  powerpc/32: Clear on-stack exception marker upon exception return
  security/selinux: fix SECURITY_LSM_NATIVE_LABELS on reused superblock
  jbd2: fix compile warning when using JBUFFER_TRACE
  jbd2: clear dirty flag when revoking a buffer from an older transaction
  serial: 8250_pci: Have ACCES cards that use the four port Pericom PI7C9X7954 chip use the pci_pericom_setup()
  serial: 8250_pci: Fix number of ports for ACCES serial cards
  serial: 8250_of: assume reg-shift of 2 for mrvl,mmp-uart
  serial: uartps: Fix stuck ISR if RX disabled with non-empty FIFO
  drm/i915: Relax mmap VMA check
  crypto: arm64/aes-neonbs - fix returning final keystream block
  i2c: tegra: fix maximum transfer size
  parport_pc: fix find_superio io compare code, should use equal test.
  intel_th: Don't reference unassigned outputs
  device property: Fix the length used in PROPERTY_ENTRY_STRING()
  kernel/sysctl.c: add missing range check in do_proc_dointvec_minmax_conv
  mm/vmalloc: fix size check for remap_vmalloc_range_partial()
  mm: hwpoison: fix thp split handing in soft_offline_in_use_page()
  nfit: acpi_nfit_ctl(): Check out_obj->type in the right place
  usb: chipidea: tegra: Fix missed ci_hdrc_remove_device()
  clk: ingenic: Fix doc of ingenic_cgu_div_info
  clk: ingenic: Fix round_rate misbehaving with non-integer dividers
  clk: clk-twl6040: Fix imprecise external abort for pdmclk
  clk: uniphier: Fix update register for CPU-gear
  ext2: Fix underflow in ext2_max_size()
  cxl: Wrap iterations over afu slices inside 'afu_list_lock'
  IB/hfi1: Close race condition on user context disable and close
  ext4: fix crash during online resizing
  ext4: add mask of ext4 flags to swap
  cpufreq: pxa2xx: remove incorrect __init annotation
  cpufreq: tegra124: add missing of_node_put()
  x86/kprobes: Prohibit probing on optprobe template code
  irqchip/gic-v3-its: Avoid parsing _indirect_ twice for Device table
  libertas_tf: don't set URB_ZERO_PACKET on IN USB transfer
  crypto: pcbc - remove bogus memcpy()s with src == dest
  Btrfs: fix corruption reading shared and compressed extents after hole punching
  btrfs: ensure that a DUP or RAID1 block group has exactly two stripes
  Btrfs: setup a nofs context for memory allocation at __btrfs_set_acl
  m68k: Add -ffreestanding to CFLAGS
  splice: don't merge into linked buffers
  fs/devpts: always delete dcache dentry-s in dput()
  scsi: target/iscsi: Avoid iscsit_release_commands_from_conn() deadlock
  scsi: sd: Optimal I/O size should be a multiple of physical block size
  scsi: aacraid: Fix performance issue on logical drives
  scsi: virtio_scsi: don't send sc payload with tmfs
  s390/virtio: handle find on invalid queue gracefully
  s390/setup: fix early warning messages
  clocksource/drivers/exynos_mct: Clear timer interrupt when shutdown
  clocksource/drivers/exynos_mct: Move one-shot check from tick clear to ISR
  regulator: s2mpa01: Fix step values for some LDOs
  regulator: max77620: Initialize values for DT properties
  regulator: s2mps11: Fix steps for buck7, buck8 and LDO35
  spi: pxa2xx: Setup maximum supported DMA transfer length
  spi: ti-qspi: Fix mmap read when more than one CS in use
  mmc: sdhci-esdhc-imx: fix HS400 timing issue
  ACPI / device_sysfs: Avoid OF modalias creation for removed device
  xen: fix dom0 boot on huge systems
  tracing: Do not free iter->trace in fail path of tracing_open_pipe()
  tracing: Use strncpy instead of memcpy for string keys in hist triggers
  CIFS: Fix read after write for files with read caching
  CIFS: Do not reset lease state to NONE on lease break
  crypto: arm64/aes-ccm - fix bugs in non-NEON fallback routine
  crypto: arm64/aes-ccm - fix logical bug in AAD MAC handling
  crypto: testmgr - skip crc32c context test for ahash algorithms
  crypto: hash - set CRYPTO_TFM_NEED_KEY if ->setkey() fails
  crypto: arm64/crct10dif - revert to C code for short inputs
  crypto: arm/crct10dif - revert to C code for short inputs
  fix cgroup_do_mount() handling of failure exits
  libnvdimm: Fix altmap reservation size calculation
  libnvdimm/pmem: Honor force_raw for legacy pmem regions
  libnvdimm, pfn: Fix over-trim in trim_pfn_device()
  libnvdimm/label: Clear 'updating' flag after label-set update
  stm class: Prevent division by zero
  media: videobuf2-v4l2: drop WARN_ON in vb2_warn_zero_bytesused()
  tmpfs: fix uninitialized return value in shmem_link
  net: set static variable an initial value in atl2_probe()
  nfp: bpf: fix ALU32 high bits clearance bug
  nfp: bpf: fix code-gen bug on BPF_ALU | BPF_XOR | BPF_K
  net: thunderx: make CFG_DONE message to run through generic send-ack sequence
  mac80211_hwsim: propagate genlmsg_reply return code
  phonet: fix building with clang
  ARCv2: support manual regfile save on interrupts
  ARC: uacces: remove lp_start, lp_end from clobber list
  ARCv2: lib: memcpy: fix doing prefetchw outside of buffer
  ixgbe: fix older devices that do not support IXGBE_MRQC_L3L4TXSWEN
  tmpfs: fix link accounting when a tmpfile is linked in
  net: marvell: mvneta: fix DMA debug warning
  arm64: Relax GIC version check during early boot
  qed: Fix iWARP syn packet mac address validation.
  ASoC: topology: free created components in tplg load error
  mailbox: bcm-flexrm-mailbox: Fix FlexRM ring flush timeout issue
  net: mv643xx_eth: disable clk on error path in mv643xx_eth_shared_probe()
  qmi_wwan: apply SET_DTR quirk to Sierra WP7607
  pinctrl: meson: meson8b: fix the sdxc_a data 1..3 pins
  net: systemport: Fix reception of BPDUs
  scsi: libiscsi: Fix race between iscsi_xmit_task and iscsi_complete_task
  keys: Fix dependency loop between construction record and auth key
  assoc_array: Fix shortcut creation
  af_key: unconditionally clone on broadcast
  ARM: 8824/1: fix a migrating irq bug when hotplug cpu
  esp: Skip TX bytes accounting when sending from a request socket
  clk: sunxi: A31: Fix wrong AHB gate number
  clk: sunxi-ng: v3s: Fix TCON reset de-assert bit
  Input: st-keyscan - fix potential zalloc NULL dereference
  auxdisplay: ht16k33: fix potential user-after-free on module unload
  i2c: bcm2835: Clear current buffer pointers and counts after a transfer
  i2c: cadence: Fix the hold bit setting
  net: hns: Fix object reference leaks in hns_dsaf_roce_reset()
  mm: page_alloc: fix ref bias in page_frag_alloc() for 1-byte allocs
  Revert "mm: use early_pfn_to_nid in page_ext_init"
  mm/gup: fix gup_pmd_range() for dax
  NFS: Don't use page_file_mapping after removing the page
  floppy: check_events callback should not return a negative number
  ipvs: fix dependency on nf_defrag_ipv6
  mac80211: Fix Tx aggregation session tear down with ITXQs
  Input: matrix_keypad - use flush_delayed_work()
  Input: ps2-gpio - flush TX work when closing port
  Input: cap11xx - switch to using set_brightness_blocking()
  ARM: OMAP2+: fix lack of timer interrupts on CPU1 after hotplug
  KVM: arm/arm64: Reset the VCPU without preemption and vcpu state loaded
  ASoC: rsnd: fixup rsnd_ssi_master_clk_start() user count check
  ASoC: dapm: fix out-of-bounds accesses to DAPM lookup tables
  ARM: OMAP2+: Variable "reg" in function omap4_dsi_mux_pads() could be uninitialized
  Input: pwm-vibra - stop regulator after disabling pwm, not before
  Input: pwm-vibra - prevent unbalanced regulator
  s390/dasd: fix using offset into zero size array error
  gpu: ipu-v3: Fix CSI offsets for imx53
  drm/imx: imx-ldb: add missing of_node_puts
  gpu: ipu-v3: Fix i.MX51 CSI control registers offset
  drm/imx: ignore plane updates on disabled crtcs
  crypto: rockchip - update new iv to device in multiple operations
  crypto: rockchip - fix scatterlist nents error
  crypto: ahash - fix another early termination in hash walk
  crypto: caam - fixed handling of sg list
  stm class: Fix an endless loop in channel allocation
  iio: adc: exynos-adc: Fix NULL pointer exception on unbind
  ASoC: fsl_esai: fix register setting issue in RIGHT_J mode
  9p/net: fix memory leak in p9_client_create
  9p: use inode->i_lock to protect i_size_write() under 32-bit
  FROMLIST: psi: introduce psi monitor
  FROMLIST: refactor header includes to allow kthread.h inclusion in psi_types.h
  FROMLIST: psi: track changed states
  FROMLIST: psi: split update_stats into parts
  FROMLIST: psi: rename psi fields in preparation for psi trigger addition
  FROMLIST: psi: make psi_enable static
  FROMLIST: psi: introduce state_mask to represent stalled psi states
  ANDROID: cuttlefish_defconfig: Enable CONFIG_INPUT_MOUSEDEV
  ANDROID: cuttlefish_defconfig: Enable CONFIG_PSI
  BACKPORT: kernel: cgroup: add poll file operation
  BACKPORT: fs: kernfs: add poll file operation
  UPSTREAM: psi: avoid divide-by-zero crash inside virtual machines
  UPSTREAM: psi: clarify the Kconfig text for the default-disable option
  UPSTREAM: psi: fix aggregation idle shut-off
  UPSTREAM: psi: fix reference to kernel commandline enable
  UPSTREAM: psi: make disabling/enabling easier for vendor kernels
  UPSTREAM: kernel/sched/psi.c: simplify cgroup_move_task()
  BACKPORT: psi: cgroup support
  UPSTREAM: psi: pressure stall information for CPU, memory, and IO
  UPSTREAM: sched: introduce this_rq_lock_irq()
  UPSTREAM: sched: sched.h: make rq locking and clock functions available in stats.h
  UPSTREAM: sched: loadavg: make calc_load_n() public
  BACKPORT: sched: loadavg: consolidate LOAD_INT, LOAD_FRAC, CALC_LOAD
  UPSTREAM: delayacct: track delays from thrashing cache pages
  UPSTREAM: mm: workingset: tell cache transitions from workingset thrashing
  sched/fair: fix energy compute when a cluster is only a cpu core in multi-cluster system

Conflicts:
	arch/arm/kernel/irq.c
	drivers/scsi/sd.c
	include/linux/sched.h
	include/uapi/linux/taskstats.h
	kernel/sched/Makefile
	sound/soc/soc-dapm.c

Change-Id: I12ebb57a34da9101ee19458d7e1f96ecc769c39a
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
2019-05-15 07:44:57 -07:00
Uladzislau Rezki (Sony)
7e573c6d29 mm/vmalloc.c: fix kernel BUG at mm/vmalloc.c:512!
[ Upstream commit afd07389d3f4933c7f7817a92fb5e053d59a3182 ]

One of the vmalloc stress test case triggers the kernel BUG():

  <snip>
  [60.562151] ------------[ cut here ]------------
  [60.562154] kernel BUG at mm/vmalloc.c:512!
  [60.562206] invalid opcode: 0000 [#1] PREEMPT SMP PTI
  [60.562247] CPU: 0 PID: 430 Comm: vmalloc_test/0 Not tainted 4.20.0+ #161
  [60.562293] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
  [60.562351] RIP: 0010:alloc_vmap_area+0x36f/0x390
  <snip>

it can happen due to big align request resulting in overflowing of
calculated address, i.e.  it becomes 0 after ALIGN()'s fixup.

Fix it by checking if calculated address is within vstart/vend range.

Link: http://lkml.kernel.org/r/20190124115648.9433-2-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Garnier <thgarnie@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-04-05 22:31:27 +02:00
Roman Penyaev
c877818ada mm/vmalloc: fix size check for remap_vmalloc_range_partial()
commit 401592d2e095947344e10ec0623adbcd58934dd4 upstream.

When VM_NO_GUARD is not set area->size includes adjacent guard page,
thus for correct size checking get_vm_area_size() should be used, but
not area->size.

This fixes possible kernel oops when userspace tries to mmap an area on
1 page bigger than was allocated by vmalloc_user() call: the size check
inside remap_vmalloc_range_partial() accounts non-existing guard page
also, so check successfully passes but vmalloc_to_page() returns NULL
(guard page does not physically exist).

The following code pattern example should trigger an oops:

  static int oops_mmap(struct file *file, struct vm_area_struct *vma)
  {
        void *mem;

        mem = vmalloc_user(4096);
        BUG_ON(!mem);
        /* Do not care about mem leak */

        return remap_vmalloc_range(vma, mem, 0);
  }

And userspace simply mmaps size + PAGE_SIZE:

  mmap(NULL, 8192, PROT_WRITE|PROT_READ, MAP_PRIVATE, fd, 0);

Possible candidates for oops which do not have any explicit size
checks:

   *** drivers/media/usb/stkwebcam/stk-webcam.c:
   v4l_stk_mmap[789]   ret = remap_vmalloc_range(vma, sbuf->buffer, 0);

Or the following one:

   *** drivers/video/fbdev/core/fbmem.c
   static int
   fb_mmap(struct file *file, struct vm_area_struct * vma)
        ...
        res = fb->fb_mmap(info, vma);

Where fb_mmap callback calls remap_vmalloc_range() directly without any
explicit checks:

   *** drivers/video/fbdev/vfb.c
   static int vfb_mmap(struct fb_info *info,
             struct vm_area_struct *vma)
   {
       return remap_vmalloc_range(vma, (void *)info->fix.smem_start, vma->vm_pgoff);
   }

Link: http://lkml.kernel.org/r/20190103145954.16942-2-rpenyaev@suse.de
Signed-off-by: Roman Penyaev <rpenyaev@suse.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Joe Perches <joe@perches.com>
Cc: "Luis R. Rodriguez" <mcgrof@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-03-23 14:35:24 +01:00
Roman Gushchin
fd7f993edf mm: show number of vmalloc pages in /proc/meminfo
Vmalloc() is getting more and more used these days (kernel stacks,
bpf and percpu allocator are new top users), and the total %
of memory consumed by vmalloc() can be pretty significant
and changes dynamically.

/proc/meminfo is the best place to display this information:
its top goal is to show top consumers of the memory.

Since the VmallocUsed field in /proc/meminfo is not in use
for quite a long time (it has been defined to 0 by the
commit a5ad88ce8c ("mm: get rid of 'vmalloc_info' from
/proc/meminfo")), let's reuse it for showing the actual
physical memory consumption of vmalloc().

Change-Id: Ice4fd4b94c9c156b463487aaef033a8f8c3aa821
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Patch-mainline: linux-mm @ Mon, 25 Feb 2019 12:30:37 -0800
Signed-off-by: Vijayanand Jitta <vjitta@codeaurora.org>
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
2019-03-19 22:53:38 -07:00
Chintan Pandya
b9d1724cf6 mm: vmalloc: avoid racy handling of debugobjects in vunmap
[ Upstream commit f3c01d2f3ade6790db67f80fef60df84424f8964 ]

Currently, __vunmap flow is,
 1) Release the VM area
 2) Free the debug objects corresponding to that vm area.

This leave some race window open.
 1) Release the VM area
 1.5) Some other client gets the same vm area
 1.6) This client allocates new debug objects on the same
      vm area
 2) Free the debug objects corresponding to this vm area.

Here, we actually free 'other' client's debug objects.

Fix this by freeing the debug objects first and then releasing the VM
area.

Link: http://lkml.kernel.org/r/1523961828-9485-2-git-send-email-cpandya@codeaurora.org
Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Byungchul Park <byungchul.park@lge.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yisheng Xie <xieyisheng1@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-03 07:50:23 +02:00
Michal Hocko
c902ff1e4b vmalloc: fix __GFP_HIGHMEM usage for vmalloc_32 on 32b systems
commit 698d0831ba87b92ae10b15e8203cfd59f5a59a35 upstream.

Kai Heng Feng has noticed that BUG_ON(PageHighMem(pg)) triggers in
drivers/media/common/saa7146/saa7146_core.c since 19809c2da2 ("mm,
vmalloc: use __GFP_HIGHMEM implicitly").

saa7146_vmalloc_build_pgtable uses vmalloc_32 and it is reasonable to
expect that the resulting page is not in highmem.  The above commit
aimed to add __GFP_HIGHMEM only for those requests which do not specify
any zone modifier gfp flag.  vmalloc_32 relies on GFP_VMALLOC32 which
should do the right thing.  Except it has been missed that GFP_VMALLOC32
is an alias for GFP_KERNEL on 32b architectures.  Thanks to Matthew to
notice this.

Fix the problem by unconditionally setting GFP_DMA32 in GFP_VMALLOC32
for !64b arches (as a bailout).  This should do the right thing and use
ZONE_NORMAL which should be always below 4G on 32b systems.

Debugged by Matthew Wilcox.

[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/20180212095019.GX21609@dhcp22.suse.cz
Fixes: 19809c2da2 ("mm, vmalloc: use __GFP_HIGHMEM implicitly”)
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Kai Heng Feng <kai.heng.feng@canonical.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Laura Abbott <labbott@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-25 11:08:04 +01:00
Johannes Weiner
b8c8a338f7 Revert "vmalloc: back off when the current task is killed"
This reverts commits 5d17a73a2e ("vmalloc: back off when the current
task is killed") and 171012f561 ("mm: don't warn when vmalloc() fails
due to a fatal signal").

Commit 5d17a73a2e ("vmalloc: back off when the current task is
killed") made all vmalloc allocations from a signal-killed task fail.
We have seen crashes in the tty driver from this, where a killed task
exiting tries to switch back to N_TTY, fails n_tty_open because of the
vmalloc failing, and later crashes when dereferencing tty->disc_data.

Arguably, relying on a vmalloc() call to succeed in order to properly
exit a task is not the most robust way of doing things.  There will be a
follow-up patch to the tty code to fall back to the N_NULL ldisc.

But the justification to make that vmalloc() call fail like this isn't
convincing, either.  The patch mentions an OOM victim exhausting the
memory reserves and thus deadlocking the machine.  But the OOM killer is
only one, improbable source of fatal signals.  It doesn't make sense to
fail allocations preemptively with plenty of memory in most cases.

The patch doesn't mention real-life instances where vmalloc sites would
exhaust memory, which makes it sound more like a theoretical issue to
begin with.  But just in case, the OOM access to memory reserves has
been restricted on the allocator side in cd04ae1e2d ("mm, oom: do not
rely on TIF_MEMDIE for memory reserves access"), which should take care
of any theoretical concerns on that front.

Revert this patch, and the follow-up that suppresses the allocation
warnings when we fail the allocations due to a signal.

Link: http://lkml.kernel.org/r/20171004185906.GB2136@cmpxchg.org
Fixes:  171012f561 ("mm: don't warn when vmalloc() fails due to a fatal signal")
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Alan Cox <alan@llwyncelyn.cymru>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-10-13 16:18:32 -07:00
Byungchul Park
894e58c147 mm/vmalloc.c: don't reinvent the wheel but use existing llist API
Although llist provides proper APIs, they are not used.  Make them used.

Link: http://lkml.kernel.org/r/1502095374-16112-1-git-send-email-byungchul.park@lge.com
Signed-off-by: Byungchul Park <byungchul.park@lge.com>
Cc: zijun_hu <zijun_hu@htc.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-06 17:27:29 -07:00
Wei Yang
c568da282b mm/vmalloc.c: halve the number of comparisons performed in pcpu_get_vm_areas()
In pcpu_get_vm_areas(), it checks each range is not overlapped.  To make
sure it is, only (N^2)/2 comparison is necessary, while current code
does N^2 times.  By starting from the next range, it achieves the goal
and the continue could be removed.

Also,

 - the overlap check of two ranges could be done with one clause

 - one typo in comment is fixed.

Link: http://lkml.kernel.org/r/20170803063822.48702-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-06 17:27:29 -07:00
Laura Abbott
704b862f9e mm/vmalloc.c: don't unconditonally use __GFP_HIGHMEM
Commit 19809c2da2 ("mm, vmalloc: use __GFP_HIGHMEM implicitly") added
use of __GFP_HIGHMEM for allocations.  vmalloc_32 may use
GFP_DMA/GFP_DMA32 which does not play nice with __GFP_HIGHMEM and will
trigger a BUG in gfp_zone.

Only add __GFP_HIGHMEM if we aren't using GFP_DMA/GFP_DMA32.

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1482249
Link: http://lkml.kernel.org/r/20170816220705.31374-1-labbott@redhat.com
Fixes: 19809c2da2 ("mm, vmalloc: use __GFP_HIGHMEM implicitly")
Signed-off-by: Laura Abbott <labbott@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-08-18 15:32:02 -07:00
Michal Hocko
dcda9b0471 mm, tree wide: replace __GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic
__GFP_REPEAT was designed to allow retry-but-eventually-fail semantic to
the page allocator.  This has been true but only for allocations
requests larger than PAGE_ALLOC_COSTLY_ORDER.  It has been always
ignored for smaller sizes.  This is a bit unfortunate because there is
no way to express the same semantic for those requests and they are
considered too important to fail so they might end up looping in the
page allocator for ever, similarly to GFP_NOFAIL requests.

Now that the whole tree has been cleaned up and accidental or misled
usage of __GFP_REPEAT flag has been removed for !costly requests we can
give the original flag a better name and more importantly a more useful
semantic.  Let's rename it to __GFP_RETRY_MAYFAIL which tells the user
that the allocator would try really hard but there is no promise of a
success.  This will work independent of the order and overrides the
default allocator behavior.  Page allocator users have several levels of
guarantee vs.  cost options (take GFP_KERNEL as an example)

 - GFP_KERNEL & ~__GFP_RECLAIM - optimistic allocation without _any_
   attempt to free memory at all. The most light weight mode which even
   doesn't kick the background reclaim. Should be used carefully because
   it might deplete the memory and the next user might hit the more
   aggressive reclaim

 - GFP_KERNEL & ~__GFP_DIRECT_RECLAIM (or GFP_NOWAIT)- optimistic
   allocation without any attempt to free memory from the current
   context but can wake kswapd to reclaim memory if the zone is below
   the low watermark. Can be used from either atomic contexts or when
   the request is a performance optimization and there is another
   fallback for a slow path.

 - (GFP_KERNEL|__GFP_HIGH) & ~__GFP_DIRECT_RECLAIM (aka GFP_ATOMIC) -
   non sleeping allocation with an expensive fallback so it can access
   some portion of memory reserves. Usually used from interrupt/bh
   context with an expensive slow path fallback.

 - GFP_KERNEL - both background and direct reclaim are allowed and the
   _default_ page allocator behavior is used. That means that !costly
   allocation requests are basically nofail but there is no guarantee of
   that behavior so failures have to be checked properly by callers
   (e.g. OOM killer victim is allowed to fail currently).

 - GFP_KERNEL | __GFP_NORETRY - overrides the default allocator behavior
   and all allocation requests fail early rather than cause disruptive
   reclaim (one round of reclaim in this implementation). The OOM killer
   is not invoked.

 - GFP_KERNEL | __GFP_RETRY_MAYFAIL - overrides the default allocator
   behavior and all allocation requests try really hard. The request
   will fail if the reclaim cannot make any progress. The OOM killer
   won't be triggered.

 - GFP_KERNEL | __GFP_NOFAIL - overrides the default allocator behavior
   and all allocation requests will loop endlessly until they succeed.
   This might be really dangerous especially for larger orders.

Existing users of __GFP_REPEAT are changed to __GFP_RETRY_MAYFAIL
because they already had their semantic.  No new users are added.
__alloc_pages_slowpath is changed to bail out for __GFP_RETRY_MAYFAIL if
there is no progress and we have already passed the OOM point.

This means that all the reclaim opportunities have been exhausted except
the most disruptive one (the OOM killer) and a user defined fallback
behavior is more sensible than keep retrying in the page allocator.

[akpm@linux-foundation.org: fix arch/sparc/kernel/mdesc.c]
[mhocko@suse.com: semantic fix]
  Link: http://lkml.kernel.org/r/20170626123847.GM11534@dhcp22.suse.cz
[mhocko@kernel.org: address other thing spotted by Vlastimil]
  Link: http://lkml.kernel.org/r/20170626124233.GN11534@dhcp22.suse.cz
Link: http://lkml.kernel.org/r/20170623085345.11304-3-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Alex Belits <alex.belits@cavium.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: NeilBrown <neilb@suse.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-12 16:26:03 -07:00
Yisheng Xie
78c72746f5 vmalloc: show lazy-purged vma info in vmallocinfo
When ioremap a 67112960 bytes vm_area with the vmallocinfo:
 [..]
 0xec79b000-0xec7fa000  389120 ftl_add_mtd+0x4d0/0x754 pages=94 vmalloc
 0xec800000-0xecbe1000 4067328 kbox_proc_mem_write+0x104/0x1c4 phys=8b520000 ioremap

we get the result:
 0xf1000000-0xf5001000 67112960 devm_ioremap+0x38/0x7c phys=40000000 ioremap

For the align for ioremap must be less than '1 << IOREMAP_MAX_ORDER':

	if (flags & VM_IOREMAP)
		align = 1ul << clamp_t(int, get_count_order_long(size),
			PAGE_SHIFT, IOREMAP_MAX_ORDER);

So it makes idiot like me a litte puzzled why this was a jump the
vm_area from 0xec800000-0xecbe1000 to 0xf1000000-0xf5001000, and leaving
0xed000000-0xf1000000 as a big hole.

This patch is to show all of vm_area, including vmas which are freeing
but still in the vmap_area_list, to make it more clear about why we will
get 0xf1000000-0xf5001000 in the above case.  And we will get a
vmallocinfo like:

 [..]
 0xec79b000-0xec7fa000  389120 ftl_add_mtd+0x4d0/0x754 pages=94 vmalloc
 0xec800000-0xecbe1000 4067328 kbox_proc_mem_write+0x104/0x1c4 phys=8b520000 ioremap
 [..]
 0xece7c000-0xece7e000    8192 unpurged vm_area
 0xece7e000-0xece83000   20480 vm_map_ram
 0xf0099000-0xf00aa000   69632 vm_map_ram

after this patch.

Link: http://lkml.kernel.org/r/1496649682-20710-1-git-send-email-xieyisheng1@huawei.com
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: zijun_hu <zijun_hu@htc.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-10 16:32:31 -07:00
Catalin Marinas
94f4a1618b mm: kmemleak: treat vm_struct as alternative reference to vmalloc'ed objects
Kmemleak requires that vmalloc'ed objects have a minimum reference count
of 2: one in the corresponding vm_struct object and the other owned by
the vmalloc() caller.  There are cases, however, where the original
vmalloc() returned pointer is lost and, instead, a pointer to vm_struct
is stored (see free_thread_stack()).  Kmemleak currently reports such
objects as leaks.

This patch adds support for treating any surplus references to an object
as additional references to a specified object.  It introduces the
kmemleak_vmalloc() API function which takes a vm_struct pointer and sets
its surplus reference passing to the actual vmalloc() returned pointer.
The __vmalloc_node_range() calling site has been modified accordingly.

Link: http://lkml.kernel.org/r/1495726937-23557-4-git-send-email-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: "Luis R. Rodriguez" <mcgrof@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: "Luis R. Rodriguez" <mcgrof@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-06 16:24:34 -07:00
Ard Biesheuvel
029c54b095 mm/vmalloc.c: huge-vmap: fail gracefully on unexpected huge vmap mappings
Existing code that uses vmalloc_to_page() may assume that any address
for which is_vmalloc_addr() returns true may be passed into
vmalloc_to_page() to retrieve the associated struct page.

This is not un unreasonable assumption to make, but on architectures
that have CONFIG_HAVE_ARCH_HUGE_VMAP=y, it no longer holds, and we need
to ensure that vmalloc_to_page() does not go off into the weeds trying
to dereference huge PUDs or PMDs as table entries.

Given that vmalloc() and vmap() themselves never create huge mappings or
deal with compound pages at all, there is no correct answer in this
case, so return NULL instead, and issue a warning.

When reading /proc/kcore on arm64, you will hit an oops as soon as you
hit the huge mappings used for the various segments that make up the
mapping of vmlinux.  With this patch applied, you will no longer hit the
oops, but the kcore contents willl be incorrect (these regions will be
zeroed out)

We are fixing this for kcore specifically, so it avoids vread() for
those regions.  At least one other problematic user exists, i.e.,
/dev/kmem, but that is currently broken on arm64 for other reasons.

Link: http://lkml.kernel.org/r/20170609082226.26152-1-ard.biesheuvel@linaro.org
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Laura Abbott <labbott@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: zhong jiang <zhongjiang@huawei.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-06-23 16:15:55 -07:00
Michal Hocko
8594a21cf7 mm, vmalloc: fix vmalloc users tracking properly
Commit 1f5307b1e0 ("mm, vmalloc: properly track vmalloc users") has
pulled asm/pgtable.h include dependency to linux/vmalloc.h and that
turned out to be a bad idea for some architectures.  E.g.  m68k fails
with

   In file included from arch/m68k/include/asm/pgtable_mm.h:145:0,
                    from arch/m68k/include/asm/pgtable.h:4,
                    from include/linux/vmalloc.h:9,
                    from arch/m68k/kernel/module.c:9:
   arch/m68k/include/asm/mcf_pgtable.h: In function 'nocache_page':
>> arch/m68k/include/asm/mcf_pgtable.h:339:43: error: 'init_mm' undeclared (first use in this function)
    #define pgd_offset_k(address) pgd_offset(&init_mm, address)

as spotted by kernel build bot. nios2 fails for other reason

  In file included from include/asm-generic/io.h:767:0,
                   from arch/nios2/include/asm/io.h:61,
                   from include/linux/io.h:25,
                   from arch/nios2/include/asm/pgtable.h:18,
                   from include/linux/mm.h:70,
                   from include/linux/pid_namespace.h:6,
                   from include/linux/ptrace.h:9,
                   from arch/nios2/include/uapi/asm/elf.h:23,
                   from arch/nios2/include/asm/elf.h:22,
                   from include/linux/elf.h:4,
                   from include/linux/module.h:15,
                   from init/main.c:16:
  include/linux/vmalloc.h: In function '__vmalloc_node_flags':
  include/linux/vmalloc.h:99:40: error: 'PAGE_KERNEL' undeclared (first use in this function); did you mean 'GFP_KERNEL'?

which is due to the newly added #include <asm/pgtable.h>, which on nios2
includes <linux/io.h> and thus <asm/io.h> and <asm-generic/io.h> which
again includes <linux/vmalloc.h>.

Tweaking that around just turns out a bigger headache than necessary.
This patch reverts 1f5307b1e0 and reimplements the original fix in a
different way.  __vmalloc_node_flags can stay static inline which will
cover vmalloc* functions.  We only have one external user
(kvmalloc_node) and we can export __vmalloc_node_flags_caller and
provide the caller directly.  This is much simpler and it doesn't really
need any games with header files.

[akpm@linux-foundation.org: coding-style fixes]
[mhocko@kernel.org: revert old comment]
  Link: http://lkml.kernel.org/r/20170509211054.GB16325@dhcp22.suse.cz
Fixes: 1f5307b1e0 ("mm, vmalloc: properly track vmalloc users")
Link: http://lkml.kernel.org/r/20170509153702.GR6481@dhcp22.suse.cz
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: Tobias Klauser <tklauser@distanz.ch>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-12 15:57:15 -07:00
Linus Torvalds
e47b40a235 Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull more arm64 updates from Catalin Marinas:

 - Silence module allocation failures when CONFIG_ARM*_MODULE_PLTS is
   enabled. This requires a check for __GFP_NOWARN in alloc_vmap_area()

 - Improve/sanitise user tagged pointers handling in the kernel

 - Inline asm fixes/cleanups

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: Silence first allocation with CONFIG_ARM64_MODULE_PLTS=y
  ARM: Silence first allocation with CONFIG_ARM_MODULE_PLTS=y
  mm: Silence vmap() allocation failures based on caller gfp_flags
  arm64: uaccess: suppress spurious clang warning
  arm64: atomic_lse: match asm register sizes
  arm64: armv8_deprecated: ensure extension of addr
  arm64: uaccess: ensure extension of access_ok() addr
  arm64: ensure extension of smp_store_release value
  arm64: xchg: hazard against entire exchange variable
  arm64: documentation: document tagged pointer stack constraints
  arm64: entry: improve data abort handling of tagged pointers
  arm64: hw_breakpoint: fix watchpoint matching for tagged pointers
  arm64: traps: fix userspace cache maintenance emulation on a tagged pointer
2017-05-11 11:27:54 -07:00
Florian Fainelli
03497d761c mm: Silence vmap() allocation failures based on caller gfp_flags
If the caller has set __GFP_NOWARN don't print the following message:
vmap allocation for size 15736832 failed: use vmalloc=<size> to increase
size.

This can happen with the ARM/Linux or ARM64/Linux module loader built
with CONFIG_ARM{,64}_MODULE_PLTS=y which does a first attempt at loading
a large module from module space, then falls back to vmalloc space.

Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-11 14:41:26 +01:00
Michal Hocko
19809c2da2 mm, vmalloc: use __GFP_HIGHMEM implicitly
__vmalloc* allows users to provide gfp flags for the underlying
allocation.  This API is quite popular

  $ git grep "=[[:space:]]__vmalloc\|return[[:space:]]*__vmalloc" | wc -l
  77

The only problem is that many people are not aware that they really want
to give __GFP_HIGHMEM along with other flags because there is really no
reason to consume precious lowmemory on CONFIG_HIGHMEM systems for pages
which are mapped to the kernel vmalloc space.  About half of users don't
use this flag, though.  This signals that we make the API unnecessarily
too complex.

This patch simply uses __GFP_HIGHMEM implicitly when allocating pages to
be mapped to the vmalloc space.  Current users which add __GFP_HIGHMEM
are simplified and drop the flag.

Link: http://lkml.kernel.org/r/20170307141020.29107-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: Cristopher Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-08 17:15:13 -07:00
Michal Hocko
1f5307b1e0 mm, vmalloc: properly track vmalloc users
__vmalloc_node_flags used to be static inline but this has changed by
"mm: introduce kv[mz]alloc helpers" because kvmalloc_node needs to use
it as well and the code is outside of the vmalloc proper.  I haven't
realized that changing this will lead to a subtle bug though.  The
function is responsible to track the caller as well.  This caller is
then printed by /proc/vmallocinfo.  If __vmalloc_node_flags is not
inline then we would get only direct users of __vmalloc_node_flags as
callers (e.g.  v[mz]alloc) which reduces usefulness of this debugging
feature considerably.  It simply doesn't help to see that the given
range belongs to vmalloc as a caller:

  0xffffc90002c79000-0xffffc90002c7d000   16384 vmalloc+0x16/0x18 pages=3 vmalloc N0=3
  0xffffc90002c81000-0xffffc90002c85000   16384 vmalloc+0x16/0x18 pages=3 vmalloc N1=3
  0xffffc90002c8d000-0xffffc90002c91000   16384 vmalloc+0x16/0x18 pages=3 vmalloc N1=3
  0xffffc90002c95000-0xffffc90002c99000   16384 vmalloc+0x16/0x18 pages=3 vmalloc N1=3

We really want to catch the _caller_ of the vmalloc function.  Fix this
issue by making __vmalloc_node_flags static inline again.

Link: http://lkml.kernel.org/r/20170502134657.12381-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-08 17:15:12 -07:00
Michal Hocko
a7c3e901a4 mm: introduce kv[mz]alloc helpers
Patch series "kvmalloc", v5.

There are many open coded kmalloc with vmalloc fallback instances in the
tree.  Most of them are not careful enough or simply do not care about
the underlying semantic of the kmalloc/page allocator which means that
a) some vmalloc fallbacks are basically unreachable because the kmalloc
part will keep retrying until it succeeds b) the page allocator can
invoke a really disruptive steps like the OOM killer to move forward
which doesn't sound appropriate when we consider that the vmalloc
fallback is available.

As it can be seen implementing kvmalloc requires quite an intimate
knowledge if the page allocator and the memory reclaim internals which
strongly suggests that a helper should be implemented in the memory
subsystem proper.

Most callers, I could find, have been converted to use the helper
instead.  This is patch 6.  There are some more relying on __GFP_REPEAT
in the networking stack which I have converted as well and Eric Dumazet
was not opposed [2] to convert them as well.

[1] http://lkml.kernel.org/r/20170130094940.13546-1-mhocko@kernel.org
[2] http://lkml.kernel.org/r/1485273626.16328.301.camel@edumazet-glaptop3.roam.corp.google.com

This patch (of 9):

Using kmalloc with the vmalloc fallback for larger allocations is a
common pattern in the kernel code.  Yet we do not have any common helper
for that and so users have invented their own helpers.  Some of them are
really creative when doing so.  Let's just add kv[mz]alloc and make sure
it is implemented properly.  This implementation makes sure to not make
a large memory pressure for > PAGE_SZE requests (__GFP_NORETRY) and also
to not warn about allocation failures.  This also rules out the OOM
killer as the vmalloc is a more approapriate fallback than a disruptive
user visible action.

This patch also changes some existing users and removes helpers which
are specific for them.  In some cases this is not possible (e.g.
ext4_kvmalloc, libcfs_kvzalloc) because those seems to be broken and
require GFP_NO{FS,IO} context which is not vmalloc compatible in general
(note that the page table allocation is GFP_KERNEL).  Those need to be
fixed separately.

While we are at it, document that __vmalloc{_node} about unsupported gfp
mask because there seems to be a lot of confusion out there.
kvmalloc_node will warn about GFP_KERNEL incompatible (which are not
superset) flags to catch new abusers.  Existing ones would have to die
slowly.

[sfr@canb.auug.org.au: f2fs fixup]
  Link: http://lkml.kernel.org/r/20170320163735.332e64b7@canb.auug.org.au
Link: http://lkml.kernel.org/r/20170306103032.2540-2-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>	[ext4 part]
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-08 17:15:12 -07:00
Linus Torvalds
c58d4055c0 Merge tag 'docs-4.12' of git://git.lwn.net/linux
Pull documentation update from Jonathan Corbet:
 "A reasonably busy cycle for documentation this time around. There is a
  new guide for user-space API documents, rather sparsely populated at
  the moment, but it's a start. Markus improved the infrastructure for
  converting diagrams. Mauro has converted much of the USB documentation
  over to RST. Plus the usual set of fixes, improvements, and tweaks.

  There's a bit more than the usual amount of reaching out of
  Documentation/ to fix comments elsewhere in the tree; I have acks for
  those where I could get them"

* tag 'docs-4.12' of git://git.lwn.net/linux: (74 commits)
  docs: Fix a couple typos
  docs: Fix a spelling error in vfio-mediated-device.txt
  docs: Fix a spelling error in ioctl-number.txt
  MAINTAINERS: update file entry for HSI subsystem
  Documentation: allow installing man pages to a user defined directory
  Doc/PM: Sync with intel_powerclamp code behavior
  zr364xx.rst: usb/devices is now at /sys/kernel/debug/
  usb.rst: move documentation from proc_usb_info.txt to USB ReST book
  convert philips.txt to ReST and add to media docs
  docs-rst: usb: update old usbfs-related documentation
  arm: Documentation: update a path name
  docs: process/4.Coding.rst: Fix a couple of document refs
  docs-rst: fix usb cross-references
  usb: gadget.h: be consistent at kernel doc macros
  usb: composite.h: fix two warnings when building docs
  usb: get rid of some ReST doc build errors
  usb.rst: get rid of some Sphinx errors
  usb/URB.txt: convert to ReST and update it
  usb/persist.txt: convert to ReST and add to driver-api book
  usb/hotplug.txt: convert to ReST and add to driver-api book
  ...
2017-05-02 10:21:17 -07:00
mchehab@s-opensource.com
0e056eb553 kernel-api.rst: fix a series of errors when parsing C files
./lib/string.c:134: WARNING: Inline emphasis start-string without end-string.
./mm/filemap.c:522: WARNING: Inline interpreted text or phrase reference start-string without end-string.
./mm/filemap.c:1283: ERROR: Unexpected indentation.
./mm/filemap.c:3003: WARNING: Inline interpreted text or phrase reference start-string without end-string.
./mm/vmalloc.c:1544: WARNING: Inline emphasis start-string without end-string.
./mm/page_alloc.c:4245: ERROR: Unexpected indentation.
./ipc/util.c:676: ERROR: Unexpected indentation.
./drivers/pci/irq.c:35: WARNING: Block quote ends without a blank line; unexpected unindent.
./security/security.c:109: ERROR: Unexpected indentation.
./security/security.c:110: WARNING: Definition list ends without a blank line; unexpected unindent.
./block/genhd.c:275: WARNING: Inline strong start-string without end-string.
./block/genhd.c:283: WARNING: Inline strong start-string without end-string.
./include/linux/clk.h:134: WARNING: Inline emphasis start-string without end-string.
./include/linux/clk.h:134: WARNING: Inline emphasis start-string without end-string.
./ipc/util.c:477: ERROR: Unknown target name: "s".

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-04-02 14:31:49 -06:00
Dmitry Vyukov
171012f561 mm: don't warn when vmalloc() fails due to a fatal signal
When vmalloc() fails it prints a very lengthy message with all the
details about memory consumption assuming that it happened due to OOM.

However, vmalloc() can also fail due to fatal signal pending.  In such
case the message is quite confusing because it suggests that it is OOM
but the numbers suggest otherwise.  The messages can also pollute
console considerably.

Don't warn when vmalloc() fails due to fatal signal pending.

Link: http://lkml.kernel.org/r/20170313114425.72724-1-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-03-16 16:56:18 -07:00
Kirill A. Shutemov
c2febafc67 mm: convert generic code to 5-level paging
Convert all non-architecture-specific code to 5-level paging.

It's mostly mechanical adding handling one more page table level in
places where we deal with pud_t.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-03-09 11:48:47 -08:00
Ingo Molnar
c3edc4010e sched/headers: Move task_struct::signal and task_struct::sighand types and accessors into <linux/sched/signal.h>
task_struct::signal and task_struct::sighand are pointers, which would normally make it
straightforward to not define those types in sched.h.

That is not so, because the types are accompanied by a myriad of APIs (macros and inline
functions) that dereference them.

Split the types and the APIs out of sched.h and move them into a new header, <linux/sched/signal.h>.

With this change sched.h does not know about 'struct signal' and 'struct sighand' anymore,
trying to put accessors into sched.h as a test fails the following way:

  ./include/linux/sched.h: In function ‘test_signal_types’:
  ./include/linux/sched.h:2461:18: error: dereferencing pointer to incomplete type ‘struct signal_struct’
                    ^

This reduces the size and complexity of sched.h significantly.

Update all headers and .c code that relied on getting the signal handling
functionality from <linux/sched.h> to include <linux/sched/signal.h>.

The list of affected files in the preparatory patch was partly generated by
grepping for the APIs, and partly by doing coverage build testing, both
all[yes|mod|def|no]config builds on 64-bit and 32-bit x86, and an array of
cross-architecture builds.

Nevertheless some (trivial) build breakage is still expected related to rare
Kconfig combinations and in-flight patches to various kernel code, but most
of it should be handled by this patch.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-03 01:43:37 +01:00
Miles Chen
199eaa05ad mm: cleanups for printing phys_addr_t and dma_addr_t
cleanup rest of dma_addr_t and phys_addr_t type casting in mm
use %pad for dma_addr_t
use %pa for phys_addr_t

Link: http://lkml.kernel.org/r/1486618489-13912-1-git-send-email-miles.chen@mediatek.com
Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-24 17:46:56 -08:00
Michal Hocko
5d17a73a2e vmalloc: back off when the current task is killed
__vmalloc_area_node() allocates pages to cover the requested vmalloc
size.  This can be a lot of memory.  If the current task is killed by
the OOM killer, and thus has an unlimited access to memory reserves, it
can consume all the memory theoretically.  Fix this by checking for
fatal_signal_pending and back off early.

Link: http://lkml.kernel.org/r/20170201092706.9966-4-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-24 17:46:55 -08:00
Michal Hocko
a8e99259e7 mm, page_alloc: warn_alloc print nodemask
warn_alloc is currently used for to report an allocation failure or an
allocation stall.  We print some details of the allocation request like
the gfp mask and the request order.  We do not print the allocation
nodemask which is important when debugging the reason for the allocation
failure as well.  We alreaddy print the nodemask in the OOM report.

Add nodemask to warn_alloc and print it in warn_alloc as well.

Link: http://lkml.kernel.org/r/20170117091543.25850-3-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:30 -08:00
Geliang Tang
4583e77310 mm/vmalloc.c: use rb_entry_safe
Use rb_entry_safe() instead of open-coding it.

Link: http://lkml.kernel.org/r/81bb9820e5b9e4a1c596b3e76f88abf8c4a76cb0.1482221947.git.geliangtang@gmail.com
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:27 -08:00
Linus Torvalds
7c0f6ba682 Replace <asm/uaccess.h> with <linux/uaccess.h> globally
This was entirely automated, using the script by Al:

  PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>'
  sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \
        $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)

to do the replacement at the end of the merge window.

Requested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-24 11:46:01 -08:00
Joel Fernandes
763b218ddf mm: add preempt points into __purge_vmap_area_lazy()
Use cond_resched_lock to avoid holding the vmap_area_lock for a
potentially long time and thus creating bad latencies for various
workloads.

[hch: split from a larger patch by Joel, wrote the crappy changelog]
Link: http://lkml.kernel.org/r/1479474236-4139-11-git-send-email-hch@lst.de
Signed-off-by: Joel Fernandes <joelaf@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Jisheng Zhang <jszhang@marvell.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: John Dias <joaodias@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:08 -08:00
Christoph Hellwig
f9e0997767 mm: turn vmap_purge_lock into a mutex
The purge_lock spinlock causes high latencies with non RT kernel.  This
has been reported multiple times on lkml [1] [2] and affects
applications like audio.

This patch replaces it with a mutex to allow preemption while holding
the lock.

Thanks to Joel Fernandes for the detailed report and analysis as well as
an earlier attempt at fixing this issue.

[1] http://lists.openwall.net/linux-kernel/2016/03/23/29
[2] https://lkml.org/lkml/2016/10/9/59

Link: http://lkml.kernel.org/r/1479474236-4139-10-git-send-email-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Jisheng Zhang <jszhang@marvell.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: John Dias <joaodias@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:08 -08:00
Christoph Hellwig
5803ed292e mm: mark all calls into the vmalloc subsystem as potentially sleeping
We will take a sleeping lock in later in this series, so this adds the
proper safeguards.

Link: http://lkml.kernel.org/r/1479474236-4139-9-git-send-email-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Jisheng Zhang <jszhang@marvell.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: John Dias <joaodias@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:08 -08:00
Andrey Ryabinin
bf22e37a64 mm: add vfree_atomic()
We are going to use sleeping lock for freeing vmap.  However some
vfree() users want to free memory from atomic (but not from interrupt)
context.  For this we add vfree_atomic() - deferred variation of vfree()
which can be used in any atomic context (except NMIs).

[akpm@linux-foundation.org: tweak comment grammar]
[aryabinin@virtuozzo.com: use raw_cpu_ptr() instead of this_cpu_ptr()]
  Link: http://lkml.kernel.org/r/1481553981-3856-1-git-send-email-aryabinin@virtuozzo.com
Link: http://lkml.kernel.org/r/1479474236-4139-5-git-send-email-hch@lst.de
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Jisheng Zhang <jszhang@marvell.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: John Dias <joaodias@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:08 -08:00