* common/android-4.4-p:
Linux 4.4.302
Input: i8042 - Fix misplaced backport of "add ASUS Zenbook Flip to noselftest list"
KVM: x86: Fix misplaced backport of "work around leak of uninitialized stack contents"
Revert "tc358743: fix register i2c_rd/wr function fix"
Revert "drm/radeon/ci: disable mclk switching for high refresh rates (v2)"
Bluetooth: MGMT: Fix misplaced BT_HS check
ipv4: tcp: send zero IPID in SYNACK messages
ipv4: raw: lock the socket in raw_bind()
hwmon: (lm90) Reduce maximum conversion rate for G781
drm/msm: Fix wrong size calculation
net-procfs: show net devices bound packet types
ipv4: avoid using shared IP generator for connected sockets
net: fix information leakage in /proc/net/ptype
ipv6_tunnel: Rate limit warning messages
scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put()
USB: core: Fix hang in usb_kill_urb by adding memory barriers
usb-storage: Add unusual-devs entry for VL817 USB-SATA bridge
tty: Add support for Brainboxes UC cards.
tty: n_gsm: fix SW flow control encoding/handling
serial: stm32: fix software flow control transfer
PM: wakeup: simplify the output logic of pm_show_wakelocks()
udf: Fix NULL ptr deref when converting from inline format
udf: Restore i_lenAlloc when inode expansion fails
scsi: zfcp: Fix failed recovery on gone remote port with non-NPIV FCP devices
s390/hypfs: include z/VM guests with access control group set
Bluetooth: refactor malicious adv data check
can: bcm: fix UAF of bcm op
Linux 4.4.301
drm/i915: Flush TLBs before releasing backing store
Linux 4.4.300
lib82596: Fix IRQ check in sni_82596_probe
bcmgenet: add WOL IRQ check
net_sched: restore "mpu xxx" handling
dmaengine: at_xdmac: Fix at_xdmac_lld struct definition
dmaengine: at_xdmac: Fix lld view setting
dmaengine: at_xdmac: Print debug message after realeasing the lock
dmaengine: at_xdmac: Don't start transactions at tx_submit level
netns: add schedule point in ops_exit_list()
net: axienet: fix number of TX ring slots for available check
net: axienet: Wait for PhyRstCmplt after core reset
af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress
parisc: pdc_stable: Fix memory leak in pdcs_register_pathentries
net/fsl: xgmac_mdio: Fix incorrect iounmap when removing module
powerpc/fsl/dts: Enable WA for erratum A-009885 on fman3l MDIO buses
ext4: don't use the orphan list when migrating an inode
ext4: Fix BUG_ON in ext4_bread when write quota data
ext4: set csum seed in tmp inode while migrating to extents
ubifs: Error path in ubifs_remount_rw() seems to wrongly free write buffers
power: bq25890: Enable continuous conversion for ADC at charging
scsi: sr: Don't use GFP_DMA
MIPS: Octeon: Fix build errors using clang
i2c: designware-pci: Fix to change data types of hcnt and lcnt parameters
ALSA: seq: Set upper limit of processed events
w1: Misuse of get_user()/put_user() reported by sparse
i2c: mpc: Correct I2C reset procedure
powerpc/smp: Move setup_profiling_timer() under CONFIG_PROFILING
i2c: i801: Don't silently correct invalid transfer size
powerpc/btext: add missing of_node_put
powerpc/cell: add missing of_node_put
powerpc/powernv: add missing of_node_put
powerpc/6xx: add missing of_node_put
parisc: Avoid calling faulthandler_disabled() twice
serial: core: Keep mctrl register state and cached copy in sync
serial: pl010: Drop CR register reset on set_termios
dm space map common: add bounds check to sm_ll_lookup_bitmap()
dm btree: add a defensive bounds check to insert_at()
net: mdio: Demote probed message to debug print
btrfs: remove BUG_ON(!eie) in find_parent_nodes
btrfs: remove BUG_ON() in find_parent_nodes()
ACPICA: Executer: Fix the REFCLASS_REFOF case in acpi_ex_opcode_1A_0T_1R()
ACPICA: Utilities: Avoid deleting the same object twice in a row
um: registers: Rename function names to avoid conflicts and build problems
ath9k: Fix out-of-bound memcpy in ath9k_hif_usb_rx_stream
usb: hub: Add delay for SuperSpeed hub resume to let links transit to U0
media: saa7146: hexium_gemini: Fix a NULL pointer dereference in hexium_attach()
media: igorplugusb: receiver overflow should be reported
net: bonding: debug: avoid printing debug logs when bond is not notifying peers
iwlwifi: mvm: synchronize with FW after multicast commands
media: m920x: don't use stack on USB reads
media: saa7146: hexium_orion: Fix a NULL pointer dereference in hexium_attach()
floppy: Add max size check for user space request
mwifiex: Fix skb_over_panic in mwifiex_usb_recv()
HSI: core: Fix return freed object in hsi_new_client
media: b2c2: Add missing check in flexcop_pci_isr:
usb: gadget: f_fs: Use stream_open() for endpoint files
ar5523: Fix null-ptr-deref with unexpected WDCMSG_TARGET_START reply
fs: dlm: filter user dlm messages for kernel locks
Bluetooth: Fix debugfs entry leak in hci_register_dev()
RDMA/cxgb4: Set queue pair state when being queried
mips: bcm63xx: add support for clk_set_parent()
mips: lantiq: add support for clk_set_parent()
misc: lattice-ecp3-config: Fix task hung when firmware load failed
ASoC: samsung: idma: Check of ioremap return value
dmaengine: pxa/mmp: stop referencing config->slave_id
RDMA/core: Let ib_find_gid() continue search even after empty entry
char/mwave: Adjust io port register size
ALSA: oss: fix compile error when OSS_DEBUG is enabled
powerpc/prom_init: Fix improper check of prom_getprop()
ALSA: hda: Add missing rwsem around snd_ctl_remove() calls
ALSA: PCM: Add missing rwsem around snd_ctl_remove() calls
ALSA: jack: Add missing rwsem around snd_ctl_remove() calls
ext4: avoid trim error on fs with small groups
net: mcs7830: handle usb read errors properly
pcmcia: fix setting of kthread task states
can: xilinx_can: xcan_probe(): check for error irq
can: softing: softing_startstop(): fix set but not used variable warning
spi: spi-meson-spifc: Add missing pm_runtime_disable() in meson_spifc_probe
ppp: ensure minimum packet size in ppp_write()
pcmcia: rsrc_nonstatic: Fix a NULL pointer dereference in nonstatic_find_mem_region()
pcmcia: rsrc_nonstatic: Fix a NULL pointer dereference in __nonstatic_find_io_region()
usb: ftdi-elan: fix memory leak on device disconnect
media: msi001: fix possible null-ptr-deref in msi001_probe()
media: saa7146: mxb: Fix a NULL pointer dereference in mxb_attach()
media: dib8000: Fix a memleak in dib8000_init()
floppy: Fix hang in watchdog when disk is ejected
serial: amba-pl011: do not request memory region twice
drm/amdgpu: Fix a NULL pointer dereference in amdgpu_connector_lcd_native_mode()
arm64: dts: qcom: msm8916: fix MMC controller aliases
netfilter: bridge: add support for pppoe filtering
tty: serial: atmel: Call dma_async_issue_pending()
tty: serial: atmel: Check return code of dmaengine_submit()
crypto: qce - fix uaf on qce_ahash_register_one
Bluetooth: stop proccessing malicious adv data
Bluetooth: cmtp: fix possible panic when cmtp_init_sockets() fails
PCI: Add function 1 DMA alias quirk for Marvell 88SE9125 SATA controller
can: softing_cs: softingcs_probe(): fix memleak on registration failure
media: stk1160: fix control-message timeouts
media: pvrusb2: fix control-message timeouts
media: dib0700: fix undefined behavior in tuner shutdown
media: em28xx: fix control-message timeouts
media: mceusb: fix control-message timeouts
rtc: cmos: take rtc_lock while reading from CMOS
nfc: llcp: fix NULL error pointer dereference on sendmsg() after failed bind()
HID: uhid: Fix worker destroying device without any protection
rtlwifi: rtl8192cu: Fix WARNING when calling local_irq_restore() with interrupts enabled
media: uvcvideo: fix division by zero at stream start
drm/i915: Avoid bitwise vs logical OR warning in snb_wm_latency_quirk()
can: gs_usb: gs_can_start_xmit(): zero-initialize hf->{flags,reserved}
can: gs_usb: fix use of uninitialized variable, detach device on reception of invalid USB data
mfd: intel-lpss: Fix too early PM enablement in the ACPI ->probe()
USB: Fix "slab-out-of-bounds Write" bug in usb_hcd_poll_rh_status
USB: core: Fix bug in resuming hub's handling of wakeup requests
Bluetooth: bfusb: fix division by zero in send path
Linux 4.4.299
power: reset: ltc2952: Fix use of floating point literals
mISDN: change function names to avoid conflicts
net: udp: fix alignment problem in udp4_seq_show()
ip6_vti: initialize __ip6_tnl_parm struct in vti6_siocdevprivate
scsi: libiscsi: Fix UAF in iscsi_conn_get_param()/iscsi_conn_teardown()
phonet: refcount leak in pep_sock_accep
rndis_host: support Hytera digital radios
xfs: map unwritten blocks in XFS_IOC_{ALLOC,FREE}SP just like fallocate
sch_qfq: prevent shift-out-of-bounds in qfq_init_qdisc
i40e: Fix incorrect netdev's real number of RX/TX queues
mac80211: initialize variable have_higher_than_11mbit
ieee802154: atusb: fix uninit value in atusb_set_extended_addr
Bluetooth: btusb: Apply QCA Rome patches for some ATH3012 models
bpf, test: fix ld_abs + vlan push/pop stress test
Linux 4.4.298
net: fix use-after-free in tw_timer_handler
Input: spaceball - fix parsing of movement data packets
Input: appletouch - initialize work before device registration
scsi: vmw_pvscsi: Set residual data length conditionally
usb: gadget: f_fs: Clear ffs_eventfd in ffs_data_clear.
xhci: Fresco FL1100 controller should not have BROKEN_MSI quirk set.
uapi: fix linux/nfc.h userspace compilation errors
nfc: uapi: use kernel size_t to fix user-space builds
selinux: initialize proto variable in selinux_ip_postroute_compat()
recordmcount.pl: fix typo in s390 mcount regex
platform/x86: apple-gmux: use resource_size() with res
Linux 4.4.297
phonet/pep: refuse to enable an unbound pipe
hamradio: improve the incomplete fix to avoid NPD
hamradio: defer ax25 kfree after unregister_netdev
ax25: NPD bug when detaching AX25 device
xen/blkfront: fix bug in backported patch
ARM: 9169/1: entry: fix Thumb2 bug in iWMMXt exception handling
ALSA: drivers: opl3: Fix incorrect use of vp->state
ALSA: jack: Check the return value of kstrdup()
hwmon: (lm90) Fix usage of CONFIG2 register in detect function
drivers: net: smc911x: Check for error irq
bonding: fix ad_actor_system option setting to default
qlcnic: potential dereference null pointer of rx_queue->page_ring
IB/qib: Fix memory leak in qib_user_sdma_queue_pkts()
HID: holtek: fix mouse probing
can: kvaser_usb: get CAN clock frequency from device
net: usb: lan78xx: add Allied Telesis AT29M2-AF
Conflicts:
drivers/usb/gadget/function/f_fs.c
Change-Id: I54140777477cbab1b4c6b7d77558e92ca2b30e96
commit 4eb1782eaa9fa1c224ad1fa0d13a9f09c3ab2d80 upstream.
Commit 85bf17b28f97 ("recordmcount.pl: look for jgnop instruction as well
as bcrl on s390") added a new alternative mnemonic for the existing brcl
instruction. This is required for the combination old gcc version (pre 9.0)
and binutils since version 2.37.
However at the same time this commit introduced a typo, replacing brcl with
bcrl. As a result no mcount locations are detected anymore with old gcc
versions (pre 9.0) and binutils before version 2.37.
Fix this by using the correct mnemonic again.
Reported-by: Miroslav Benes <mbenes@suse.cz>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: <stable@vger.kernel.org>
Fixes: 85bf17b28f97 ("recordmcount.pl: look for jgnop instruction as well as bcrl on s390")
Link: https://lore.kernel.org/r/alpine.LSU.2.21.2112230949520.19849@pobox.suse.cz
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* common/android-4.4-p:
Linux 4.4.296
xen/netback: don't queue unlimited number of packages
xen/console: harden hvc_xen against event channel storms
xen/netfront: harden netfront against event channel storms
xen/blkfront: harden blkfront against event channel storms
Input: touchscreen - avoid bitwise vs logical OR warning
ARM: 8805/2: remove unneeded naked function usage
net: lan78xx: Avoid unnecessary self assignment
net: systemport: Add global locking for descriptor lifecycle
timekeeping: Really make sure wall_to_monotonic isn't positive
USB: serial: option: add Telit FN990 compositions
PCI/MSI: Clear PCI_MSIX_FLAGS_MASKALL on error
USB: gadget: bRequestType is a bitfield, not a enum
igbvf: fix double free in `igbvf_probe`
soc/tegra: fuse: Fix bitwise vs. logical OR warning
nfsd: fix use-after-free due to delegation race
dm btree remove: fix use after free in rebalance_children()
recordmcount.pl: look for jgnop instruction as well as bcrl on s390
mac80211: send ADDBA requests using the tid/queue of the aggregation session
hwmon: (dell-smm) Fix warning on /proc/i8k creation error
net: netlink: af_netlink: Prevent empty skb by adding a check on len.
i2c: rk3x: Handle a spurious start completion interrupt flag
parisc/agp: Annotate parisc agp init functions with __init
nfc: fix segfault in nfc_genl_dump_devices_done
FROMGIT: USB: gadget: bRequestType is a bitfield, not a enum
Linux 4.4.295
irqchip: nvic: Fix offset for Interrupt Priority Offsets
irqchip/irq-gic-v3-its.c: Force synchronisation when issuing INVALL
iio: accel: kxcjk-1013: Fix possible memory leak in probe and remove
iio: itg3200: Call iio_trigger_notify_done() on error
iio: ltr501: Don't return error code in trigger handler
iio: mma8452: Fix trigger reference couting
iio: stk3310: Don't return error code in interrupt handler
usb: core: config: fix validation of wMaxPacketValue entries
USB: gadget: zero allocate endpoint 0 buffers
USB: gadget: detect too-big endpoint 0 requests
net/qla3xxx: fix an error code in ql_adapter_up()
net, neigh: clear whole pneigh_entry at alloc time
net: fec: only clear interrupt of handling queue in fec_enet_rx_queue()
net: altera: set a couple error code in probe()
net: cdc_ncm: Allow for dwNtbOutMaxSize to be unset or zero
block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2)
tracefs: Set all files to the same group ownership as the mount option
signalfd: use wake_up_pollfree()
binder: use wake_up_pollfree()
wait: add wake_up_pollfree()
libata: add horkage for ASMedia 1092
can: pch_can: pch_can_rx_normal: fix use after free
tracefs: Have new files inherit the ownership of their parent
ALSA: pcm: oss: Handle missing errors in snd_pcm_oss_change_params*()
ALSA: pcm: oss: Limit the period size to 16MB
ALSA: pcm: oss: Fix negative period/buffer sizes
ALSA: ctl: Fix copy of updated id with element read/write
mm: bdi: initialize bdi_min_ratio when bdi is unregistered
nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done
can: sja1000: fix use after free in ems_pcmcia_add_card()
HID: check for valid USB device for many HID drivers
HID: wacom: fix problems when device is not a valid USB device
HID: add USB_HID dependancy on some USB HID drivers
HID: add USB_HID dependancy to hid-chicony
HID: add USB_HID dependancy to hid-prodikeys
HID: add hid_is_usb() function to make it simpler for USB detection
HID: introduce hid_is_using_ll_driver
UPSTREAM: USB: gadget: zero allocate endpoint 0 buffers
UPSTREAM: USB: gadget: detect too-big endpoint 0 requests
Linux 4.4.294
serial: pl011: Add ACPI SBSA UART match id
tty: serial: msm_serial: Deactivate RX DMA for polling support
vgacon: Propagate console boot parameters before calling `vc_resize'
parisc: Fix "make install" on newer debian releases
siphash: use _unaligned version by default
net: qlogic: qlcnic: Fix a NULL pointer dereference in qlcnic_83xx_add_rings()
natsemi: xtensa: fix section mismatch warnings
fget: check that the fd still exists after getting a ref to it
fs: add fget_many() and fput_many()
sata_fsl: fix warning in remove_proc_entry when rmmod sata_fsl
sata_fsl: fix UAF in sata_fsl_port_stop when rmmod sata_fsl
kprobes: Limit max data_size of the kretprobe instances
net: ethernet: dec: tulip: de4x5: fix possible array overflows in type3_infoblock()
net: tulip: de4x5: fix the problem that the array 'lp->phy[8]' may be out of bound
scsi: iscsi: Unblock session then wake up error handler
s390/setup: avoid using memblock_enforce_memory_limit
platform/x86: thinkpad_acpi: Fix WWAN device disabled issue after S3 deep
net: return correct error code
hugetlb: take PMD sharing into account when flushing tlb/caches
tty: hvc: replace BUG_ON() with negative return value
xen/netfront: don't trust the backend response data blindly
xen/netfront: disentangle tx_skb_freelist
xen/netfront: don't read data from request on the ring page
xen/netfront: read response from backend only once
xen/blkfront: don't trust the backend response data blindly
xen/blkfront: don't take local copy of a request from the ring page
xen/blkfront: read response from backend only once
xen: sync include/xen/interface/io/ring.h with Xen's newest version
shm: extend forced shm destroy to support objects from several IPC nses
fuse: release pipe buf after last use
fuse: fix page stealing
NFC: add NCI_UNREG flag to eliminate the race
proc/vmcore: fix clearing user buffer by properly using clear_user()
hugetlbfs: flush TLBs correctly after huge_pmd_unshare
tracing: Check pid filtering when creating events
tcp_cubic: fix spurious Hystart ACK train detections for not-cwnd-limited flows
scsi: mpt3sas: Fix kernel panic during drive powercycle test
ARM: socfpga: Fix crash with CONFIG_FORTIRY_SOURCE
NFSv42: Don't fail clone() unless the OP_CLONE operation failed
net: ieee802154: handle iftypes as u32
ASoC: topology: Add missing rwsem around snd_ctl_remove() calls
ARM: dts: BCM5301X: Add interrupt properties to GPIO node
xen: detect uninitialized xenbus in xenbus_init
xen: don't continue xenstore initialization in case of errors
staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()
ALSA: ctxfi: Fix out-of-range access
binder: fix test regression due to sender_euid change
usb: hub: Fix locking issues with address0_mutex
usb: hub: Fix usb enumeration issue due to address0 race
USB: serial: option: add Fibocom FM101-GL variants
USB: serial: option: add Telit LE910S1 0x9200 composition
staging: ion: Prevent incorrect reference counting behavour
Conflicts:
fs/file_table.c
Change-Id: Ie66d41bc083d3d53fc89fba73b6e57bcc18e1c4a
This is the 4.4.262 stable release
# gpg: Signature made Wed Mar 17 17:08:58 2021 EET
# gpg: using RSA key 647F28654894E3BD457199BE38DBBDC86092693E
# gpg: Good signature from "Greg Kroah-Hartman <gregkh@kernel.org>" [full]
# gpg: gregkh@kernel.org: Verified 13 signatures in the past 2 hours. Encrypted
# 0 messages.
# By Ian Abbott (9) and others
# Via Greg Kroah-Hartman
* tag 'v4.4.262':
Linux 4.4.262
xen/events: avoid handling the same event on two cpus at the same time
xen/events: don't unmask an event channel when an eoi is pending
xen/events: reset affinity of 2-level event when tearing it down
iio: imu: adis16400: fix memory leak
iio: imu: adis16400: release allocated memory on failure
KVM: arm64: Fix exclusive limit for IPA size
media: hdpvr: Fix an error handling path in hdpvr_probe()
powerpc/64s: Fix instruction encoding for lis in ppc_function_entry()
alpha: switch __copy_user() and __do_clean_user() to normal calling conventions
alpha: get rid of tail-zeroing in __copy_user()
alpha: move exports to actual definitions
alpha: Package string routines together
alpha: make short build log available for division routines
alpha: merge build rules of division routines
alpha: add $(src)/ rather than $(obj)/ to make source file path
block: rsxx: fix error return code of rsxx_pci_probe()
NFSv4.2: fix return value of _nfs4_get_security_label()
staging: comedi: pcl818: Fix endian problem for AI command data
staging: comedi: pcl711: Fix endian problem for AI command data
staging: comedi: me4000: Fix endian problem for AI command data
staging: comedi: dmm32at: Fix endian problem for AI command data
staging: comedi: das800: Fix endian problem for AI command data
staging: comedi: das6402: Fix endian problem for AI command data
staging: comedi: adv_pci1710: Fix endian problem for AI command data
staging: comedi: addi_apci_1500: Fix endian problem for command sample
staging: comedi: addi_apci_1032: Fix endian problem for COS sample
staging: rtl8192e: Fix possible buffer overflow in _rtl92e_wx_set_scan
staging: rtl8712: Fix possible buffer overflow in r8712_sitesurvey_cmd
staging: rtl8188eu: fix potential memory corruption in rtw_check_beacon_data()
staging: rtl8712: unterminated string leads to read overflow
staging: rtl8188eu: prevent ->ssid overflow in rtw_wx_set_scan()
staging: rtl8192u: fix ->ssid overflow in r8192_wx_set_scan()
usbip: fix stub_dev usbip_sockfd_store() races leading to gpf
usbip: fix vhci_hcd to check for stream socket
usbip: fix stub_dev to check for stream socket
USB: serial: cp210x: add some more GE USB IDs
USB: serial: cp210x: add ID for Acuity Brands nLight Air Adapter
USB: serial: ch341: add new Product ID
USB: serial: io_edgeport: fix memory leak in edge_startup
xhci: Improve detection of device initiated wake signal.
usb: renesas_usbhs: Clear PIPECFG for re-enabling pipe with other EPNUM
usb: gadget: f_uac2: always increase endpoint max_packet_size by one audio slot
Goodix Fingerprint device is not a modem
libertas: fix a potential NULL pointer dereference
scripts/recordmcount.{c,pl}: support -ffunction-sections .text.* section names
mmc: core: Fix partition switch time for eMMC
s390/dasd: fix hanging DASD driver unbind
ALSA: usb-audio: Fix "cannot get freq eq" errors on Dell AE515 sound bar
ALSA: hda: Avoid spurious unsol event handling during S3/S4
ALSA: hda/hdmi: Cancel pending works before suspend
scsi: libiscsi: Fix iscsi_prep_scsi_cmd_pdu() error handling
s390/smp: __smp_rescan_cpus() - move cpumask away from stack
PCI: xgene-msi: Fix race in installing chained irq handler
powerpc/perf: Record counter overflow always if SAMPLE_IP is unset
mmc: mediatek: fix race condition between msdc_request_timeout and irq
mmc: mxs-mmc: Fix a resource leak in an error handling path in 'mxs_mmc_probe()'
media: usbtv: Fix deadlock on suspend
net: davicom: Fix regulator not turned off on driver removal
net: davicom: Fix regulator not turned off on failed probe
net: lapbether: Remove netif_start_queue / netif_stop_queue
net/mlx4_en: update moderation when config reset
futex: fix dead code in attach_to_pi_owner()
futex: Cure exit race
futex: Change locking rules
Revert "mm, slub: consider rest of partial list if acquire_slab() fails"
floppy: fix lock_fdc() signal handling
cifs: return proper error code in statfs(2)
netfilter: x_tables: gpf inside xt_find_revision()
can: flexcan: enable RX FIFO after FRZ/HALT valid
can: flexcan: assert FRZ bit in flexcan_chip_freeze()
can: skb: can_skb_set_owner(): fix ref counting if socket was closed before setting skb ownership
net: Fix gro aggregation for udp encaps with zero csum
ath9k: fix transmitting to stations in dynamic SMPS mode
uapi: nfnetlink_cthelper.h: fix userspace compilation error
Conflicts:
arch/alpha/include/asm/Kbuild
drivers/mmc/core/mmc.c
Change-Id: I953ac9d0615287d57d9d3a2f61910587b52676dc
This is the 4.4.259 stable release
# gpg: Signature made Wed Mar 3 17:45:51 2021 EET
# gpg: using RSA key 647F28654894E3BD457199BE38DBBDC86092693E
# gpg: Good signature from "Greg Kroah-Hartman <gregkh@kernel.org>" [full]
# gpg: gregkh@kernel.org: Verified 10 signatures in the past 2 hours. Encrypted
# 0 messages.
# By Dan Carpenter (7) and others
# Via Greg Kroah-Hartman
* tag 'v4.4.259':
Linux 4.4.259
dm era: Update in-core bitset after committing the metadata
futex: Fix OWNER_DEAD fixup
dm era: only resize metadata in preresume
dm era: Reinitialize bitset cache before digesting a new writeset
dm era: Use correct value size in equality function of writeset tree
dm era: Fix bitset memory leaks
dm era: Verify the data block size hasn't changed
dm era: Recover committed writeset after crash
gfs2: Don't skip dlm unlock if glock has an lvb
sparc32: fix a user-triggerable oops in clear_user()
f2fs: fix out-of-repair __setattr_copy()
gpio: pcf857x: Fix missing first interrupt
module: Ignore _GLOBAL_OFFSET_TABLE_ when warning for undefined symbols
libnvdimm/dimm: Avoid race between probe and available_slots_show()
usb: renesas_usbhs: Clear pipe running flag in usbhs_pkt_pop()
mm: hugetlb: fix a race between freeing and dissolving the page
floppy: reintroduce O_NDELAY fix
x86/reboot: Force all cpus to exit VMX root if VMX is supported
staging: rtl8188eu: Add Edimax EW-7811UN V2 to device table
drivers/misc/vmw_vmci: restrict too big queue size in qp_host_alloc_queue
btrfs: fix reloc root leak with 0 ref reloc roots on recovery
KEYS: trusted: Fix migratable=1 failing
usb: dwc3: gadget: Fix dep->interval for fullspeed interrupt
usb: dwc3: gadget: Fix setting of DEPCFG.bInterval_m1
USB: serial: mos7720: fix error code in mos7720_write()
USB: serial: mos7840: fix error code in mos7840_write()
USB: serial: option: update interface mapping for ZTE P685M
Input: i8042 - add ASUS Zenbook Flip to noselftest list
Input: joydev - prevent potential read overflow in ioctl
Input: xpad - add support for PowerA Enhanced Wired Controller for Xbox Series X|S
blk-settings: align max_sectors on "logical_block_size" boundary
block: Move SECTOR_SIZE and SECTOR_SHIFT definitions into <linux/blkdev.h>
scsi: bnx2fc: Fix Kconfig warning & CNIC build errors
i2c: brcmstb: Fix brcmstd_send_i2c_cmd condition
mm/hugetlb: fix potential double free in hugetlb_register_node() error path
mm/memory.c: fix potential pte_unmap_unlock pte error
PCI: Align checking of syscall user config accessors
VMCI: Use set_page_dirty_lock() when unregistering guest memory
misc: eeprom_93xx46: Add module alias to avoid breaking support for non device tree users
misc: eeprom_93xx46: Fix module alias to enable module autoprobe
sparc64: only select COMPAT_BINFMT_ELF if BINFMT_ELF is set
Input: elo - fix an error code in elo_connect()
perf test: Fix unaligned access in sample parsing test
perf intel-pt: Fix missing CYC processing in PSB
powerpc/pseries/dlpar: handle ibm, configure-connector delay status
mfd: wm831x-auxadc: Prevent use after free in wm831x_auxadc_read_irq()
tracepoint: Do not fail unregistering a probe due to memory failure
amba: Fix resource leak for drivers without .remove
ARM: 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+ cores
mmc: usdhi6rol0: Fix a resource leak in the error handling path of the probe
powerpc/47x: Disable 256k page size
IB/umad: Return EIO in case of when device disassociated
isofs: release buffer head before return
regulator: axp20x: Fix reference cout leak
clocksource/drivers/mxs_timer: Add missing semicolon when DEBUG is defined
dmaengine: fsldma: Fix a resource leak in an error handling path of the probe function
dmaengine: fsldma: Fix a resource leak in the remove function
HID: core: detect and skip invalid inputs to snto32()
clk: meson: clk-pll: fix initializing the old rate (fallback) for a PLL
jffs2: fix use after free in jffs2_sum_write_data()
fs/jfs: fix potential integer overflow on shift of a int
btrfs: clarify error returns values in __load_free_space_cache
media: uvcvideo: Accept invalid bFormatIndex and bFrameIndex values
media: cx25821: Fix a bug when reallocating some dma memory
media: lmedm04: Fix misuse of comma
ASoC: cs42l56: fix up error handling in probe
media: tm6000: Fix memleak in tm6000_start_stream
media: media/pci: Fix memleak in empress_init
MIPS: lantiq: Explicitly compare LTQ_EBU_PCC_ISTAT against 0
MIPS: c-r4k: Fix section mismatch for loongson2_sc_init
gma500: clean up error handling in init
drm/gma500: Fix error return code in psb_driver_load()
fbdev: aty: SPARC64 requires FB_ATY_CT
b43: N-PHY: Fix the update of coef for the PHY revision >= 3case
xen/netback: fix spurious event detection for common event case
bnxt_en: reverse order of TX disable and carrier off
ARM: s3c: fix fiq for clang IAS
usb: dwc2: Make "trimming xfer length" a debug message
usb: dwc2: Abort transaction after errors with unknown reason
Bluetooth: Put HCI device if inquiry procedure interrupts
Bluetooth: drop HCI device reference before return
ARM: dts: exynos: correct PMIC interrupt trigger level on Arndale Octa
ARM: dts: exynos: correct PMIC interrupt trigger level on Spring
Bluetooth: Fix initializing response id after clearing struct
MIPS: vmlinux.lds.S: add missing PAGE_ALIGNED_DATA() section
kdb: Make memory allocations more robust
scripts/recordmcount.pl: support big endian for ARCH sh
igb: Remove incorrect "unexpected SYS WRAP" log message
ntfs: check for valid standard information attribute
xen-netback: delete NAPI instance when queue fails to initialize
usb: quirks: add quirk to start video capture on ELMO L-12F document camera reliable
HID: make arrays usage and value to be the same
Change-Id: I1e89f14870d9386ef5ad211a4d421745e6b29f89
commit 9c8e2f6d3d361439cc6744a094f1c15681b55269 upstream.
When building with -ffunction-sections, the compiler will place each
function into its own ELF section, prefixed with ".text". For example,
a simple test module with functions test_module_do_work() and
test_module_wq_func():
% objdump --section-headers test_module.o | awk '/\.text/{print $2}'
.text
.text.test_module_do_work
.text.test_module_wq_func
.init.text
.exit.text
Adjust the recordmcount scripts to look for ".text" as a section name
prefix. This will ensure that those functions will be included in the
__mcount_loc relocations:
% objdump --reloc --section __mcount_loc test_module.o
OFFSET TYPE VALUE
0000000000000000 R_X86_64_64 .text.test_module_do_work
0000000000000008 R_X86_64_64 .text.test_module_wq_func
0000000000000010 R_X86_64_64 .init.text
Link: http://lkml.kernel.org/r/1542745158-25392-2-git-send-email-joe.lawrence@redhat.com
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
[Manoj: Resolve conflict on 4.4.y/4.9.y because of missing 42c269c88dc1]
Signed-off-by: Manoj Gupta <manojgupta@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 93ca696376dd3d44b9e5eae835ffbc84772023ec ]
The kernel test robot reported the following issue:
CC [M] drivers/soc/litex/litex_soc_ctrl.o
sh4-linux-objcopy: Unable to change endianness of input file(s)
sh4-linux-ld: cannot find drivers/soc/litex/.tmp_gl_litex_soc_ctrl.o: No such file or directory
sh4-linux-objcopy: 'drivers/soc/litex/.tmp_mx_litex_soc_ctrl.o': No such file
The problem is that the format of input file is elf32-shbig-linux, but
sh4-linux-objcopy wants to output a file which format is elf32-sh-linux:
$ sh4-linux-objdump -d drivers/soc/litex/litex_soc_ctrl.o | grep format
drivers/soc/litex/litex_soc_ctrl.o: file format elf32-shbig-linux
Link: https://lkml.kernel.org/r/20210210150435.2171567-1-rong.a.chen@intel.com
Link: https://lore.kernel.org/linux-mm/202101261118.GbbYSlHu-lkp@intel.com
Signed-off-by: Rong Chen <rong.a.chen@intel.com>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Yoshinori Sato <ysato@users.osdn.me>
Cc: Rich Felker <dalias@libc.org>
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>
be7635e7287e ("arch, ftrace: for KASAN put hard/soft IRQ entries into
separate sections") added .softirqentry.text section, but it was not added
to recordmcount. So functions in the section are untracable. Add the
section to scripts/recordmcount.c and scripts/recordmcount.pl.
Fixes: be7635e7287e ("arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections")
Link: http://lkml.kernel.org/r/1474902626-73468-1-git-send-email-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Steve Rostedt <rostedt@goodmis.org>
Cc: <stable@vger.kernel.org> [4.6+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit e436fd61a8f62cb7a16310a42b95ab076ff72eff)
Signed-off-by: Alexander Potapenko <glider@google.com>
commit 2e50c4bef77511b42cc226865d6bc568fa7f8769 upstream.
If a text section starts out with a data blob before the first
function start label, disassembly parsing doing in recordmcount.pl
gets confused on powerpc, leading to creation of corrupted module
objects.
This was not a problem so far since the compiler would never create
such text sections. However, this has changed with a recent change
in GCC 6 to support distances of > 2GB between a function and its
assoicated TOC in the ELFv2 ABI, exposing this problem.
There is already code in recordmcount.pl to handle such data blobs
on the sparc64 platform. This patch uses the same method to handle
those on powerpc as well.
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ulrich Weigand <ulrich.weigand@de.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull s390 updates from Martin Schwidefsky:
- The remaining patches for the z13 machine support: kernel build
option for z13, the cache synonym avoidance, SMT support,
compare-and-delay for spinloops and the CES5S crypto adapater.
- The ftrace support for function tracing with the gcc hotpatch option.
This touches common code Makefiles, Steven is ok with the changes.
- The hypfs file system gets an extension to access diagnose 0x0c data
in user space for performance analysis for Linux running under z/VM.
- The iucv hvc console gets wildcard spport for the user id filtering.
- The cacheinfo code is converted to use the generic infrastructure.
- Cleanup and bug fixes.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (42 commits)
s390/process: free vx save area when releasing tasks
s390/hypfs: Eliminate hypfs interval
s390/hypfs: Add diagnose 0c support
s390/cacheinfo: don't use smp_processor_id() in preemptible context
s390/zcrypt: fixed domain scanning problem (again)
s390/smp: increase maximum value of NR_CPUS to 512
s390/jump label: use different nop instruction
s390/jump label: add sanity checks
s390/mm: correct missing space when reporting user process faults
s390/dasd: cleanup profiling
s390/dasd: add locking for global_profile access
s390/ftrace: hotpatch support for function tracing
ftrace: let notrace function attribute disable hotpatching if necessary
ftrace: allow architectures to specify ftrace compile options
s390: reintroduce diag 44 calls for cpu_relax()
s390/zcrypt: Add support for new crypto express (CEX5S) adapter.
s390/zcrypt: Number of supported ap domains is not retrievable.
s390/spinlock: add compare-and-delay to lock wait loops
s390/tape: remove redundant if statement
s390/hvc_iucv: add simple wildcard matches to the iucv allow filter
...
Make use of gcc's hotpatch support to generate better code for ftrace
function tracing.
The generated code now contains only a six byte nop in each function
prologue instead of a 24 byte code block which will be runtime patched to
support function tracing.
With the new code generation the runtime overhead for supporting function
tracing is close to zero, while the original code did show a significant
performance impact.
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
If the function tracer is enabled, allow to set kprobes on the first
instruction of a function (which is the function trace caller):
If no kprobe is set handling of enabling and disabling function tracing
of a function simply patches the first instruction. Either it is a nop
(right now it's an unconditional branch, which skips the mcount block),
or it's a branch to the ftrace_caller() function.
If a kprobe is being placed on a function tracer calling instruction
we encode if we actually have a nop or branch in the remaining bytes
after the breakpoint instruction (illegal opcode).
This is possible, since the size of the instruction used for the nop
and branch is six bytes, while the size of the breakpoint is only
two bytes.
Therefore the first two bytes contain the illegal opcode and the last
four bytes contain either "0" for nop or "1" for branch. The kprobes
code will then execute/simulate the correct instruction.
Instruction patching for kprobes and function tracer is always done
with stop_machine(). Therefore we don't have any races where an
instruction is patched concurrently on a different cpu.
Besides that also the program check handler which executes the function
trace caller instruction won't be executed concurrently to any
stop_machine() execution.
This allows to keep full fault based kprobes handling which generates
correct pt_regs contents automatically.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
31 bit and 64 bit diverge more and more and it is rather painful
to keep both parts running.
To make things simpler just remove the 31 bit support which nobody
uses anyway.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Recordmcount utility under scripts is run, after compiling each object,
to find out all the locations of calling _mcount() and put them into
specific seciton named __mcount_loc.
Then linker collects all such information into a table in the kernel image
(between __start_mcount_loc and __stop_mcount_loc) for later use by ftrace.
This patch adds arm64 specific definitions to identify such locations.
There are two types of implementation, C and Perl. On arm64, only C version
is used to build the kernel now that CONFIG_HAVE_C_RECORDMCOUNT is on.
But Perl version is also maintained.
This patch also contains a workaround just in case where a header file,
elf.h, on host machine doesn't have definitions of EM_AARCH64 nor
R_AARCH64_ABS64. Without them, compiling C version of recordmcount will
fail.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
With gcc 4.6.0 the -mfentry feature places the function profiling call
at the start of the function. When this is used, the call is to
__fentry__ and not mcount. This is required for Ksplice as the C
version of recordmcount doesn't insert section symbols for the
__mcount_loc section so we fall back to the perl version.
Based on 48bb5dc6cd (ftrace: Make
recordmcount.c handle __fentry__).
Link: http://lkml.kernel.org/r/1383648129-10724-1-git-send-email-jamie.iles@oracle.com
Signed-off-by: Jamie Iles <jamie.iles@oracle.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit adds support for static ftrace, graph function support,
and dynamic tracer support.
Signed-off-by: Tony Lu <zlu@tilera.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Do the mcount offset adjustment in the recordmcount.pl/recordmcount.[ch]
at compile time and not in ftrace_call_adjust at run time.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Do the mcount offset adjustment in the recordmcount.pl/recordmcount.[ch]
at compile time and not in ftrace_call_adjust at run time.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
The section .ref.text will not go away unexpectedly and is
safe to trace. Add it to the safe list of sections to allow
tracing.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Handle the different nop and call instructions for Thumb-2. Also, we
need to adjust the recorded mcount_loc addresses because they have the
lsb set.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org> [recordmcount.pl change]
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This adds mcount recording and updates dynamic ftrace for ARM to work
with the new ftrace dyamic tracing implementation. It also adds support
for the mcount format used by newer ARM compilers.
With dynamic tracing, mcount() is implemented as a nop. Callsites are
patched on startup with nops, and dynamically patched to call to the
ftrace_caller() routine as needed.
Acked-by: Steven Rostedt <rostedt@goodmis.org> [recordmcount.pl change]
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The mcount call on Blackfin systems includes some stack manipulation
around the actual call site, so extend the build time perl script to
support this. This way we can avoid doing the calculation at runtime.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
LKML-Reference: <1281079584-21205-1-git-send-email-vapier@gentoo.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
I found this issue in a locally patched 2.6.32.x, current kernels have
moved the offending code to an __init function which is skipped by
recordmcount.pl, so the bug is not currently being exercised.
However, I think the patch is still a good idea, to avoid future
problems if _mcount were to ever have its address taken in normal
code.
This is what I originally saw:
Although arch/mips/kernel/ftrace.c is built without -pg, and thus
contains no calls to _mcount, it does use the address of _mcount
in ftrace_make_nop(). This was causing relocations to be emitted
for _mcount which recordmcount.pl erronously took to be _mcount
call sites. The result was that the text of ftrace_make_nop()
would be patched with garbage leading to a system crash.
In non-module code, all _mcount call sites will have R_MIPS_26
relocations, so we restrict $mcount_regex to only match on these.
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
LKML-Reference: <1278712325-12050-1-git-send-email-ddaney@caviumnetworks.com>
Cc: Li Hong <lihong.hi@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Let the arch argument be overruled by bits. Otherwise, building of
external modules against a i386 target on a x86-64 host (and likely vice
versa as well) fails unless ARCH=i386 is explicitly passed to make.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
LKML-Reference: <4B4AFE10.8050109@siemens.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
With dynamic function tracer, by default, _mcount is defined as an
"empty" function, it returns directly without any more action . When
enabling it in user-space, it will jump to a real tracing
function(ftrace_caller), and do the real job for us.
Differ from the static function tracer, dynamic function tracer provides
two functions ftrace_make_call()/ftrace_make_nop() to enable/disable the
tracing of some indicated kernel functions(set_ftrace_filter).
In the -v4 version, the implementation of this support is basically the same as
X86 version does: _mcount is implemented as an empty function and ftrace_caller
is implemented as a real tracing function respectively.
But in this version, to support module tracing with the help of
-mlong-calls in arch/mips/Makefile:
MODFLAGS += -mlong-calls.
The stuff becomes a little more complex. We need to cope with two
different type of calling to _mcount.
For the kernel part, the calling to _mcount(result of "objdump -hdr
vmlinux"). is like this:
108: 03e0082d move at,ra
10c: 0c000000 jal 0 <fpcsr_pending>
10c: R_MIPS_26 _mcount
10c: R_MIPS_NONE *ABS*
10c: R_MIPS_NONE *ABS*
110: 00020021 nop
For the module with -mlong-calls, it looks like this:
c: 3c030000 lui v1,0x0
c: R_MIPS_HI16 _mcount
c: R_MIPS_NONE *ABS*
c: R_MIPS_NONE *ABS*
10: 64630000 daddiu v1,v1,0
10: R_MIPS_LO16 _mcount
10: R_MIPS_NONE *ABS*
10: R_MIPS_NONE *ABS*
14: 03e0082d move at,ra
18: 0060f809 jalr v1
In the kernel version, there is only one "_mcount" string for every
kernel function, so, we just need to match this one in mcount_regex of
scripts/recordmcount.pl, but in the module version, we need to choose
one of the two to match. Herein, I choose the first one with
"R_MIPS_HI16 _mcount".
and In the kernel verion, without module tracing support, we just need
to replace "jal _mcount" by "jal ftrace_caller" to do real tracing, and
filter the tracing of some kernel functions via replacing it by a nop
instruction.
but as we have described before, the instruction "jal ftrace_caller" only left
32bit length for the address of ftrace_caller, it will fail when calling from
the module space. so, herein, we must replace something else.
the basic idea is loading the address of ftrace_caller to v1 via changing these
two instructions:
lui v1,0x0
addiu v1,v1,0
If we want to enable the tracing, we need to replace the above instructions to:
lui v1, HI_16BIT_ftrace_caller
addiu v1, v1, LOW_16BIT_ftrace_caller
If we want to stop the tracing of the indicated kernel functions, we
just need to replace the "jalr v1" to a nop instruction. but we need to
replace two instructions and encode the above two instructions
oursevles.
Is there a simpler solution? Yes! Here it is, in this version, we put _mcount
and ftrace_caller together, which means the address of _mcount and
ftrace_caller is the same:
_mcount:
ftrace_caller:
j ftrace_stub
nop
...(do real tracing here)...
ftrace_stub:
jr ra
move ra, at
By default, the kernel functions call _mcount, and then jump to ftrace_stub and
return. and when we want to do real tracing, we just need to remove that "j
ftrace_stub", and it will run through the two "nop" instructions and then do
the real tracing job.
what about filtering job? we just need to do this:
lui v1, hi_16bit_of_mcount <--> b 1f (0x10000004)
addiu v1, v1, low_16bit_of_mcount
move at, ra
jalr v1
nop
1f: (rec->ip + 12)
In linux-mips64, there will be some local symbols, whose name are
prefixed by $L, which need to be filtered. thanks goes to Steven for
writing the mips64-specific function_regex.
In a conclusion, with RISC, things becomes easier with such a "stupid"
trick, RISC is something like K.I.S.S, and also, there are lots of
"simple" tricks in the whole ftrace support, thanks goes to Steven and
the other folks for providing such a wonderful tracing framework!
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Nicholas Mc Guire <der.herr@hofr.at>
Cc: zhangfx@lemote.com
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/675/
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
With dynamic function tracer, by default, _mcount is defined as an
"empty" function, it returns directly without any more action. When
enabling it in user-space, it will jump to a real tracing
function(ftrace_caller), and do the real job for us.
Differ from the static function tracer, dynamic function tracer provides
two functions ftrace_make_call()/ftrace_make_nop() to enable/disable the
tracing of some indicated kernel functions(set_ftrace_filter).
In the kernel version, there is only one "_mcount" string for every
kernel function, so, we just need to match this one in mcount_regex of
scripts/recordmcount.pl.
For more information please look at code and Documentation/trace folder.
Steven ACK that scripts/recordmcount.pl part.
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Michal Simek <monstr@monstr.eu>
If the user has an older version of objcopy, that can not handle
converting local symbols to global and vice versa, then some
functions will not be part of the dynamic function tracer. The current
code in recordmcount.pl will print a warning in this case. Unfortunately,
there exists lots of files that may have this issue with older objcopys
and this will cause a warning for every file compiled with this
issue.
This patch solves this overwhelming output by creating a
.tmp_quiet_recordmcount file on the first instance the warning is
encountered. The warning will not print if this file exists.
The temp file is deleted at the beginning of the compile to ensure that
the warning will happen once again on new compiles (because the issue
is still present).
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
If a weak function is used as a relocation reference for mcount callers
and that function is overridden, it will cause ftrace to fail at run time.
The current code should prevent a weak function from being used, but if
one is, the code should exit with an error to fail at compile time.
Signed-off-by: Li Hong <lihong.hi@gmail.com>
LKML-Reference: <20091028050743.GH30758@uhli>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Move all the condition validations into the function update_funcs().
Also update_funcs should not die if $ref_func is undefined for there may be
more than one valid section in an object file.
Signed-off-by: Li Hong <lihong.hi@gmail.com>
LKML-Reference: <20091028050703.GG30758@uhli>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Add a variable to contain the regex needed to find weak functions
in the 'nm' output. This will allow other archs to easily override it.
Also rename the regex variable $nm_regex to $local_regex to be more
descriptive.
Signed-off-by: Li Hong <lihong.hi@gmail.com>
LKML-Reference: <20091028050619.GF30758@uhli>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Move the mcount section check to the beginning of the objdump read loop.
This makes the code easier to follow since the search for the mcount
section is performed first before the mcount callers are processed.
Signed-off-by: Li Hong <lihong.hi@gmail.com>
LKML-Reference: <20091028050523.GE30758@uhli>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
The current logic to check objcopy's version is incorrect. This patch
fixes the algorithm and disables the use of local functions as a reference
if the objcopy version does not support static to global conversions.
Also remove some usused variables.
Signed-off-by: Li Hong <lihong.hi@gmail.com>
LKML-Reference: <20091028050421.GD30758@uhli>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
The ftrace.c file may reference the mcount function and this may interfere
with the recordmcount.pl processing. To avoid this, the code does not
process the kernel/trace/ftrace.o. But currently the check is against
a relative path. This patch modifies the check to succeed if the path
is an absolute path.
Signed-off-by: Li Hong <lihong.hi@gmail.com>
LKML-Reference: <20091028050332.GC30758@uhli>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
The number of arguments passed into recordmcount.pl is 10, but the code
checks if only 7 are passed in.
Signed-off-by: Li Hong <lihong.hi@gmail.com>
LKML-Reference: <20091027065733.GB22032@uhli>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
The documentation currently says we will use the first function in a section
as a reference. The actual algorithm is: choose the first global function we
meet as a reference. If there is none, choose the first local one.
Change the documentation to be consistent with the code.
Also add several other clarifications.
Signed-off-by: Li Hong <lihong.hi@gmail.com>
LKML-Reference: <20091028050138.GA30758@uhli>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Based on the commit:
a586df06 "x86: Support __attribute__((__cold__)) in gcc 4.3"
some of the functions goes to the ".text.unlikely" section.
Looks like there's not many of them (I found printk, panic,
__ssb_dma_not_implemented, fat_fs_error), but still worth to
include I think.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20091013203426.175845614@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Roland Dreier found that a section that contained only a weak
function in one of the staging drivers and this caused
recordmcount.pl to spit out a warning and fail.
Although it is strange that a driver would have a weak function, and
this function only be used in one place, it should not be something
to make recordmcount.pl fail.
This patch fixes the issue in a simple manner: if only weak
functions exist in a section, then that section will not be
recorded.
Reported-by: Roland Dreier <rdreier@cisco.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
On Wed, 5 Aug 2009, Ingo Molnar wrote:
> * Dave Airlie <airlied@gmail.com> wrote:
>
> > Hey,
> >
> > So I spent 3-4 hrs today (I'm stupid yes) tracking down a .o
> > breakage by blaming rawhide gcc/binutils as I was using make
> > V=1and seeing only the compiler chain running,
>
> Hm, is this that powerpc related build bug you just reported?
Well we tracked it down and it is powerpc64 specific.
Seems that in drivers/hwmon/lm93.c there's a function called:
LM93_IN_FROM_REG()
But PPC64 has function descriptors and the real function names (the ones
you see in objdump) start with a '.'. Thus this in objdump you have:
Disassembly of section .text:
0000000000000000 <.LM93_IN_FROM_REG>:
0: 7c 08 02 a6 mflr r0
4: fb 81 ff e0 std r28,-32(r1)
The function name used is .LM93_IN_FROM_REG. But gcc considers symbols
that start with ".L" as a special symbol that is used inside the assembly
stage.
The nm passed into recordmcount uses the --synthetic option which shows
the ".L" symbols (my runs outside of the build did not include the
--synthetic option, so my older patch worked). We see the function as a
local.
Now to capture all the locations that use "mcount" we need to have a
reference to link into the object file a list of mcount callers. We need a
reference that will not disappear. We try to use a global function and if
that does not work, we use a local function as a reference. But to relink
the section back into the object, we need to make it global. In this case,
we run objcopy using --globalize-symbol and --localize-symbol to convert
the symbol into a global symbol, link the mcount list, then convert it
back to a local symbol.
This works great except for this case. .L* symbols can not be converted
into a global symbol, and the mcount section referencing it will remain
unresolved.
Reported-by: Dave Airlie <airlied@gmail.com>
LKML-Reference: <alpine.DEB.2.00.0908052011590.5010@gandalf.stny.rr.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
The value of $offset should be the offset of $ref_func from the
beginning of the object file. Therefore, we should set both variables
together.
This fixes a bug I was hitting on sh where $offset (which is used to
calcualte the addends for the __mcount_loc entries) was being set
multiple times and didn't correspond to $ref_func's offset in the object
file. The addends in __mcount_loc were calculated incorrectly, resulting
in ftrace dynamically modifying addresses that weren't mcount call
sites.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
LKML-Reference: <1248365775-25196-2-git-send-email-matt@console-pimps.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Fix the conditional that checks if we already have a $ref_func and that
the new function is weak. The code as previously checking whether either
condition was false, and we really need to only update $ref_func is both
cconditions are false.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
LKML-Reference: <1248365775-25196-1-git-send-email-matt@console-pimps.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
