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Changes in 4.4.161
mm/vmstat.c: skip NR_TLB_REMOTE_FLUSH* properly
fbdev/omapfb: fix omapfb_memory_read infoleak
x86/vdso: Fix asm constraints on vDSO syscall fallbacks
x86/vdso: Fix vDSO syscall fallback asm constraint regression
PCI: Reprogram bridge prefetch registers on resume
mac80211: fix setting IEEE80211_KEY_FLAG_RX_MGMT for AP mode keys
PM / core: Clear the direct_complete flag on errors
dm cache: fix resize crash if user doesn't reload cache table
xhci: Add missing CAS workaround for Intel Sunrise Point xHCI
USB: serial: simple: add Motorola Tetra MTP6550 id
of: unittest: Disable interrupt node tests for old world MAC systems
ext4: always verify the magic number in xattr blocks
cgroup: Fix deadlock in cpu hotplug path
ath10k: fix use-after-free in ath10k_wmi_cmd_send_nowait
powerpc/fadump: Return error when fadump registration fails
ARC: clone syscall to setp r25 as thread pointer
ucma: fix a use-after-free in ucma_resolve_ip()
ubifs: Check for name being NULL while mounting
tcp: increment sk_drops for dropped rx packets
tcp: use an RB tree for ooo receive queue
tcp: fix a stale ooo_last_skb after a replace
tcp: free batches of packets in tcp_prune_ofo_queue()
tcp: call tcp_drop() from tcp_data_queue_ofo()
tcp: add tcp_ooo_try_coalesce() helper
ath10k: fix scan crash due to incorrect length calculation
ebtables: arpreply: Add the standard target sanity check
Linux 4.4.161
Change-Id: I4c6607d0be0977857f966b048279590470c854c2
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit 116d2f7496c51b2e02e8e4ecdd2bdf5fb9d5a641 upstream.
Deadlock during cgroup migration from cpu hotplug path when a task T is
being moved from source to destination cgroup.
kworker/0:0
cpuset_hotplug_workfn()
cpuset_hotplug_update_tasks()
hotplug_update_tasks_legacy()
remove_tasks_in_empty_cpuset()
cgroup_transfer_tasks() // stuck in iterator loop
cgroup_migrate()
cgroup_migrate_add_task()
In cgroup_migrate_add_task() it checks for PF_EXITING flag of task T.
Task T will not migrate to destination cgroup. css_task_iter_start()
will keep pointing to task T in loop waiting for task T cg_list node
to be removed.
Task T
do_exit()
exit_signals() // sets PF_EXITING
exit_task_namespaces()
switch_task_namespaces()
free_nsproxy()
put_mnt_ns()
drop_collected_mounts()
namespace_unlock()
synchronize_rcu()
_synchronize_rcu_expedited()
schedule_work() // on cpu0 low priority worker pool
wait_event() // waiting for work item to execute
Task T inserted a work item in the worklist of cpu0 low priority
worker pool. It is waiting for expedited grace period work item
to execute. This work item will only be executed once kworker/0:0
complete execution of cpuset_hotplug_workfn().
kworker/0:0 ==> Task T ==>kworker/0:0
In case of PF_EXITING task being migrated from source to destination
cgroup, migrate next available task in source cgroup.
Signed-off-by: Prateek Sood <prsood@codeaurora.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
[AmitP: Upstream commit cherry-pick failed, so I picked the
backported changes from CAF/msm-4.9 tree instead:
https://source.codeaurora.org/quic/la/kernel/msm-4.9/commit/?id=49b74f1696417b270c89cd893ca9f37088928078]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Thus its been occasionally noted that users have seen
confusing warnings like:
Adjusting tsc more than 11% (5941981 vs 7759439)
We try to limit the maximum total adjustment to 11% (10% tick
adjustment + 0.5% frequency adjustment). But this is done by
bounding the requested adjustment values, and the internal
steering that is done by tracking the error from what was
requested and what was applied, does not have any such limits.
This is usually not problematic, but in some cases has a risk
that an adjustment could cause the clocksource mult value to
overflow, so its an indication things are outside of what is
expected.
It ends up most of the reports of this 11% warning are on systems
using chrony, which utilizes the adjtimex() ADJ_TICK interface
(which allows a +-10% adjustment). The original rational for
ADJ_TICK unclear to me but my assumption it was originally added
to allow broken systems to get a big constant correction at boot
(see adjtimex userspace package for an example) which would allow
the system to work w/ ntpd's 0.5% adjustment limit.
Chrony uses ADJ_TICK to make very aggressive short term corrections
(usually right at startup). Which push us close enough to the max
bound that a few late ticks can cause the internal steering to push
past the max adjust value (tripping the warning).
Thus this patch adds some extra logic to enforce the max adjustment
cap in the internal steering.
Note: This has the potential to slow corrections when the ADJ_TICK
value is furthest away from the default value. So it would be good to
get some testing from folks using chrony, to make sure we don't
cause any troubles there.
Change-Id: I31f2966d5134af18e3902cb0f1d9805f204a3e14
Cc: Miroslav Lichvar <mlichvar@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Tested-by: Miroslav Lichvar <mlichvar@redhat.com>
Reported-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Git-commit: ec02b076ceab63f99e5b3d80fd223d777266c236
Git-repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>
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* refs/heads/tmp-a94efb1
Linux 4.4.160
dm thin metadata: fix __udivdi3 undefined on 32-bit
ocfs2: fix locking for res->tracking and dlm->tracking_list
proc: restrict kernel stack dumps to root
crypto: mxs-dcp - Fix wait logic on chan threads
ALSA: hda/realtek - Cannot adjust speaker's volume on Dell XPS 27 7760
smb2: fix missing files in root share directory listing
xen: fix GCC warning and remove duplicate EVTCHN_ROW/EVTCHN_COL usage
xen: avoid crash in disable_hotplug_cpu
xen/manage: don't complain about an empty value in control/sysrq node
cifs: read overflow in is_valid_oplock_break()
s390/qeth: don't dump past end of unknown HW header
r8169: Clear RTL_FLAG_TASK_*_PENDING when clearing RTL_FLAG_TASK_ENABLED
arm64: jump_label.h: use asm_volatile_goto macro instead of "asm goto"
hexagon: modify ffs() and fls() to return int
arch/hexagon: fix kernel/dma.c build warning
dm thin metadata: try to avoid ever aborting transactions
fs/cifs: suppress a string overflow warning
drm/nouveau/TBDdevinit: don't fail when PMU/PRE_OS is missing from VBIOS
USB: yurex: Check for truncation in yurex_read()
RDMA/ucma: check fd type in ucma_migrate_id()
perf probe powerpc: Ignore SyS symbols irrespective of endianness
usb: gadget: fotg210-udc: Fix memory leak of fotg210->ep[i]
mm: madvise(MADV_DODUMP): allow hugetlbfs pages
tools/vm/page-types.c: fix "defined but not used" warning
tools/vm/slabinfo.c: fix sign-compare warning
mac80211: shorten the IBSS debug messages
mac80211: Fix station bandwidth setting after channel switch
mac80211: fix a race between restart and CSA flows
cfg80211: fix a type issue in ieee80211_chandef_to_operating_class()
fs/cifs: don't translate SFM_SLASH (U+F026) to backslash
net: cadence: Fix a sleep-in-atomic-context bug in macb_halt_tx()
i2c: uniphier-f: issue STOP only for last message or I2C_M_STOP
i2c: uniphier: issue STOP only for last message or I2C_M_STOP
RAID10 BUG_ON in raise_barrier when force is true and conf->barrier is 0
cfg80211: nl80211_update_ft_ies() to validate NL80211_ATTR_IE
mac80211: mesh: fix HWMP sequence numbering to follow standard
gpio: adp5588: Fix sleep-in-atomic-context bug
mac80211_hwsim: correct use of IEEE80211_VHT_CAP_RXSTBC_X
mac80211: correct use of IEEE80211_VHT_CAP_RXSTBC_X
KVM: PPC: Book3S HV: Don't truncate HPTE index in xlate function
media: v4l: event: Prevent freeing event subscriptions while accessed
arm64: KVM: Sanitize PSTATE.M when being set from userspace
arm64: cpufeature: Track 32bit EL0 support
i2c: i801: Allow ACPI AML access I/O ports not reserved for SMBus
hwmon: (adt7475) Make adt7475_read_word() return errors
hwmon: (ina2xx) fix sysfs shunt resistor read access
e1000: ensure to free old tx/rx rings in set_ringparam()
e1000: check on netif_running() before calling e1000_up()
net: hns: fix length and page_offset overflow when CONFIG_ARM64_64K_PAGES
thermal: of-thermal: disable passive polling when thermal zone is disabled
ext4: never move the system.data xattr out of the inode body
arm64: KVM: Tighten guest core register access from userspace
serial: imx: restore handshaking irq for imx1
scsi: target: iscsi: Use bin2hex instead of a re-implementation
IB/srp: Avoid that sg_reset -d ${srp_device} triggers an infinite loop
Input: elantech - enable middle button of touchpad on ThinkPad P72
USB: remove LPM management from usb_driver_claim_interface()
Revert "usb: cdc-wdm: Fix a sleep-in-atomic-context bug in service_outstanding_interrupt()"
USB: usbdevfs: restore warning for nonsensical flags
USB: usbdevfs: sanitize flags more
media: uvcvideo: Support realtek's UVC 1.5 device
slub: make ->cpu_partial unsigned int
USB: handle NULL config in usb_find_alt_setting()
USB: fix error handling in usb_driver_claim_interface()
spi: rspi: Fix interrupted DMA transfers
spi: rspi: Fix invalid SPI use during system suspend
spi: sh-msiof: Fix handling of write value for SISTR register
spi: sh-msiof: Fix invalid SPI use during system suspend
spi: tegra20-slink: explicitly enable/disable clock
serial: cpm_uart: return immediately from console poll
floppy: Do not copy a kernel pointer to user memory in FDGETPRM ioctl
ARM: dts: dra7: fix DCAN node addresses
nfsd: fix corrupted reply to badly ordered compound
module: exclude SHN_UNDEF symbols from kallsyms api
ASoC: dapm: Fix potential DAI widget pointer deref when linking DAIs
EDAC, i7core: Fix memleaks and use-after-free on probe and remove
scsi: bnx2i: add error handling for ioremap_nocache
HID: hid-ntrig: add error handling for sysfs_create_group
ARM: mvebu: declare asm symbols as character arrays in pmsu.c
wlcore: Add missing PM call for wlcore_cmd_wait_for_event_or_timeout()
rndis_wlan: potential buffer overflow in rndis_wlan_auth_indication()
ath10k: protect ath10k_htt_rx_ring_free with rx_ring.lock
ALSA: hda: Add AZX_DCAPS_PM_RUNTIME for AMD Raven Ridge
media: tm6000: add error handling for dvb_register_adapter
drivers/tty: add error handling for pcmcia_loop_config
staging: android: ashmem: Fix mmap size validation
media: omap3isp: zero-initialize the isp cam_xclk{a,b} initial data
media: soc_camera: ov772x: correct setting of banding filter
media: s3c-camif: ignore -ENOIOCTLCMD from v4l2_subdev_call for s_power
ALSA: snd-aoa: add of_node_put() in error path
s390/extmem: fix gcc 8 stringop-overflow warning
alarmtimer: Prevent overflow for relative nanosleep
powerpc/powernv/ioda2: Reduce upper limit for DMA window size
usb: wusbcore: security: cast sizeof to int for comparison
scsi: ibmvscsi: Improve strings handling
scsi: klist: Make it safe to use klists in atomic context
scsi: target/iscsi: Make iscsit_ta_authentication() respect the output buffer size
x86/entry/64: Add two more instruction suffixes
x86/tsc: Add missing header to tsc_msr.c
media: fsl-viu: fix error handling in viu_of_probe()
powerpc/kdump: Handle crashkernel memory reservation failure
media: exynos4-is: Prevent NULL pointer dereference in __isp_video_try_fmt()
md-cluster: clear another node's suspend_area after the copy is finished
6lowpan: iphc: reset mac_header after decompress to fix panic
USB: serial: kobil_sct: fix modem-status error handling
Bluetooth: Add a new Realtek 8723DE ID 0bda:b009
power: vexpress: fix corruption in notifier registration
uwb: hwa-rc: fix memory leak at probe
staging: rts5208: fix missing error check on call to rtsx_write_register
x86/numa_emulation: Fix emulated-to-physical node mapping
vmci: type promotion bug in qp_host_get_user_memory()
tsl2550: fix lux1_input error in low light
crypto: skcipher - Fix -Wstringop-truncation warnings
ANDROID: sdcardfs: Change current->fs under lock
ANDROID: sdcardfs: Don't use OVERRIDE_CRED macro
Revert "f2fs: use timespec64 for inode timestamps"
Conflicts:
arch/arm64/include/asm/cpufeature.h
Change-Id: I661204f2419f634173846d03ed4078b93aa006a1
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.160
crypto: skcipher - Fix -Wstringop-truncation warnings
tsl2550: fix lux1_input error in low light
vmci: type promotion bug in qp_host_get_user_memory()
x86/numa_emulation: Fix emulated-to-physical node mapping
staging: rts5208: fix missing error check on call to rtsx_write_register
uwb: hwa-rc: fix memory leak at probe
power: vexpress: fix corruption in notifier registration
Bluetooth: Add a new Realtek 8723DE ID 0bda:b009
USB: serial: kobil_sct: fix modem-status error handling
6lowpan: iphc: reset mac_header after decompress to fix panic
md-cluster: clear another node's suspend_area after the copy is finished
media: exynos4-is: Prevent NULL pointer dereference in __isp_video_try_fmt()
powerpc/kdump: Handle crashkernel memory reservation failure
media: fsl-viu: fix error handling in viu_of_probe()
x86/tsc: Add missing header to tsc_msr.c
x86/entry/64: Add two more instruction suffixes
scsi: target/iscsi: Make iscsit_ta_authentication() respect the output buffer size
scsi: klist: Make it safe to use klists in atomic context
scsi: ibmvscsi: Improve strings handling
usb: wusbcore: security: cast sizeof to int for comparison
powerpc/powernv/ioda2: Reduce upper limit for DMA window size
alarmtimer: Prevent overflow for relative nanosleep
s390/extmem: fix gcc 8 stringop-overflow warning
ALSA: snd-aoa: add of_node_put() in error path
media: s3c-camif: ignore -ENOIOCTLCMD from v4l2_subdev_call for s_power
media: soc_camera: ov772x: correct setting of banding filter
media: omap3isp: zero-initialize the isp cam_xclk{a,b} initial data
staging: android: ashmem: Fix mmap size validation
drivers/tty: add error handling for pcmcia_loop_config
media: tm6000: add error handling for dvb_register_adapter
ALSA: hda: Add AZX_DCAPS_PM_RUNTIME for AMD Raven Ridge
ath10k: protect ath10k_htt_rx_ring_free with rx_ring.lock
rndis_wlan: potential buffer overflow in rndis_wlan_auth_indication()
wlcore: Add missing PM call for wlcore_cmd_wait_for_event_or_timeout()
ARM: mvebu: declare asm symbols as character arrays in pmsu.c
HID: hid-ntrig: add error handling for sysfs_create_group
scsi: bnx2i: add error handling for ioremap_nocache
EDAC, i7core: Fix memleaks and use-after-free on probe and remove
ASoC: dapm: Fix potential DAI widget pointer deref when linking DAIs
module: exclude SHN_UNDEF symbols from kallsyms api
nfsd: fix corrupted reply to badly ordered compound
ARM: dts: dra7: fix DCAN node addresses
floppy: Do not copy a kernel pointer to user memory in FDGETPRM ioctl
serial: cpm_uart: return immediately from console poll
spi: tegra20-slink: explicitly enable/disable clock
spi: sh-msiof: Fix invalid SPI use during system suspend
spi: sh-msiof: Fix handling of write value for SISTR register
spi: rspi: Fix invalid SPI use during system suspend
spi: rspi: Fix interrupted DMA transfers
USB: fix error handling in usb_driver_claim_interface()
USB: handle NULL config in usb_find_alt_setting()
slub: make ->cpu_partial unsigned int
media: uvcvideo: Support realtek's UVC 1.5 device
USB: usbdevfs: sanitize flags more
USB: usbdevfs: restore warning for nonsensical flags
Revert "usb: cdc-wdm: Fix a sleep-in-atomic-context bug in service_outstanding_interrupt()"
USB: remove LPM management from usb_driver_claim_interface()
Input: elantech - enable middle button of touchpad on ThinkPad P72
IB/srp: Avoid that sg_reset -d ${srp_device} triggers an infinite loop
scsi: target: iscsi: Use bin2hex instead of a re-implementation
serial: imx: restore handshaking irq for imx1
arm64: KVM: Tighten guest core register access from userspace
ext4: never move the system.data xattr out of the inode body
thermal: of-thermal: disable passive polling when thermal zone is disabled
net: hns: fix length and page_offset overflow when CONFIG_ARM64_64K_PAGES
e1000: check on netif_running() before calling e1000_up()
e1000: ensure to free old tx/rx rings in set_ringparam()
hwmon: (ina2xx) fix sysfs shunt resistor read access
hwmon: (adt7475) Make adt7475_read_word() return errors
i2c: i801: Allow ACPI AML access I/O ports not reserved for SMBus
arm64: cpufeature: Track 32bit EL0 support
arm64: KVM: Sanitize PSTATE.M when being set from userspace
media: v4l: event: Prevent freeing event subscriptions while accessed
KVM: PPC: Book3S HV: Don't truncate HPTE index in xlate function
mac80211: correct use of IEEE80211_VHT_CAP_RXSTBC_X
mac80211_hwsim: correct use of IEEE80211_VHT_CAP_RXSTBC_X
gpio: adp5588: Fix sleep-in-atomic-context bug
mac80211: mesh: fix HWMP sequence numbering to follow standard
cfg80211: nl80211_update_ft_ies() to validate NL80211_ATTR_IE
RAID10 BUG_ON in raise_barrier when force is true and conf->barrier is 0
i2c: uniphier: issue STOP only for last message or I2C_M_STOP
i2c: uniphier-f: issue STOP only for last message or I2C_M_STOP
net: cadence: Fix a sleep-in-atomic-context bug in macb_halt_tx()
fs/cifs: don't translate SFM_SLASH (U+F026) to backslash
cfg80211: fix a type issue in ieee80211_chandef_to_operating_class()
mac80211: fix a race between restart and CSA flows
mac80211: Fix station bandwidth setting after channel switch
mac80211: shorten the IBSS debug messages
tools/vm/slabinfo.c: fix sign-compare warning
tools/vm/page-types.c: fix "defined but not used" warning
mm: madvise(MADV_DODUMP): allow hugetlbfs pages
usb: gadget: fotg210-udc: Fix memory leak of fotg210->ep[i]
perf probe powerpc: Ignore SyS symbols irrespective of endianness
RDMA/ucma: check fd type in ucma_migrate_id()
USB: yurex: Check for truncation in yurex_read()
drm/nouveau/TBDdevinit: don't fail when PMU/PRE_OS is missing from VBIOS
fs/cifs: suppress a string overflow warning
dm thin metadata: try to avoid ever aborting transactions
arch/hexagon: fix kernel/dma.c build warning
hexagon: modify ffs() and fls() to return int
arm64: jump_label.h: use asm_volatile_goto macro instead of "asm goto"
r8169: Clear RTL_FLAG_TASK_*_PENDING when clearing RTL_FLAG_TASK_ENABLED
s390/qeth: don't dump past end of unknown HW header
cifs: read overflow in is_valid_oplock_break()
xen/manage: don't complain about an empty value in control/sysrq node
xen: avoid crash in disable_hotplug_cpu
xen: fix GCC warning and remove duplicate EVTCHN_ROW/EVTCHN_COL usage
smb2: fix missing files in root share directory listing
ALSA: hda/realtek - Cannot adjust speaker's volume on Dell XPS 27 7760
crypto: mxs-dcp - Fix wait logic on chan threads
proc: restrict kernel stack dumps to root
ocfs2: fix locking for res->tracking and dlm->tracking_list
dm thin metadata: fix __udivdi3 undefined on 32-bit
Linux 4.4.160
Change-Id: I54d72945f741d6b4442adcd7bc18cb5417accb0f
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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[ Upstream commit 9f2d1e68cf4d641def734adaccfc3823d3575e6c ]
Livepatch modules are special in that we preserve their entire symbol
tables in order to be able to apply relocations after module load. The
unwanted side effect of this is that undefined (SHN_UNDEF) symbols of
livepatch modules are accessible via the kallsyms api and this can
confuse symbol resolution in livepatch (klp_find_object_symbol()) and
cause subtle bugs in livepatch.
Have the module kallsyms api skip over SHN_UNDEF symbols. These symbols
are usually not available for normal modules anyway as we cut down their
symbol tables to just the core (non-undefined) symbols, so this should
really just affect livepatch modules. Note that this patch doesn't
affect the display of undefined symbols in /proc/kallsyms.
Reported-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 5f936e19cc0ef97dbe3a56e9498922ad5ba1edef ]
Air Icy reported:
UBSAN: Undefined behaviour in kernel/time/alarmtimer.c:811:7
signed integer overflow:
1529859276030040771 + 9223372036854775807 cannot be represented in type 'long long int'
Call Trace:
alarm_timer_nsleep+0x44c/0x510 kernel/time/alarmtimer.c:811
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1235 [inline]
__se_sys_clock_nanosleep kernel/time/posix-timers.c:1213 [inline]
__x64_sys_clock_nanosleep+0x326/0x4e0 kernel/time/posix-timers.c:1213
do_syscall_64+0xb8/0x3a0 arch/x86/entry/common.c:290
alarm_timer_nsleep() uses ktime_add() to add the current time and the
relative expiry value. ktime_add() has no sanity checks so the addition
can overflow when the relative timeout is large enough.
Use ktime_add_safe() which has the necessary sanity checks in place and
limits the result to the valid range.
Fixes: 9a7adcf5c6de ("timers: Posix interface for alarm-timers")
Reported-by: Team OWL337 <icytxw@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1807020926360.1595@nanos.tec.linutronix.de
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-624c095
Linux 4.4.159
iw_cxgb4: only allow 1 flush on user qps
HID: sony: Support DS4 dongle
HID: sony: Update device ids
arm64: Add trace_hardirqs_off annotation in ret_to_user
ext4: don't mark mmp buffer head dirty
ext4: fix online resizing for bigalloc file systems with a 1k block size
ext4: fix online resize's handling of a too-small final block group
ext4: recalucate superblock checksum after updating free blocks/inodes
ext4: avoid divide by zero fault when deleting corrupted inline directories
tty: vt_ioctl: fix potential Spectre v1
drm/nouveau/drm/nouveau: Use pm_runtime_get_noresume() in connector_detect()
ocfs2: fix ocfs2 read block panic
scsi: target: iscsi: Use hex2bin instead of a re-implementation
neighbour: confirm neigh entries when ARP packet is received
net: hp100: fix always-true check for link up state
net/appletalk: fix minor pointer leak to userspace in SIOCFINDIPDDPRT
ipv6: fix possible use-after-free in ip6_xmit()
gso_segment: Reset skb->mac_len after modifying network header
mm: shmem.c: Correctly annotate new inodes for lockdep
ring-buffer: Allow for rescheduling when removing pages
xen/x86/vpmu: Zero struct pt_regs before calling into sample handling code
xen/netfront: don't bug in case of too many frags
platform/x86: alienware-wmi: Correct a memory leak
ALSA: emu10k1: fix possible info leak to userspace on SNDRV_EMU10K1_IOCTL_INFO
ALSA: bebob: use address returned by kmalloc() instead of kernel stack for streaming DMA mapping
ASoC: cs4265: fix MMTLR Data switch control
NFC: Fix the number of pipes
NFC: Fix possible memory corruption when handling SHDLC I-Frame commands
ANDROID: restrict store of prefer_idle as boolean
f2fs: readahead encrypted block during GC
f2fs: avoid fi->i_gc_rwsem[WRITE] lock in f2fs_gc
f2fs: fix performance issue observed with multi-thread sequential read
f2fs: fix to skip verifying block address for non-regular inode
f2fs: rework fault injection handling to avoid a warning
f2fs: support fault_type mount option
f2fs: fix to return success when trimming meta area
f2fs: fix use-after-free of dicard command entry
f2fs: support discard submission error injection
f2fs: split discard command in prior to block layer
f2fs: wake up gc thread immediately when gc_urgent is set
f2fs: fix incorrect range->len in f2fs_trim_fs()
f2fs: refresh recent accessed nat entry in lru list
f2fs: fix avoid race between truncate and background GC
f2fs: avoid race between zero_range and background GC
f2fs: fix to do sanity check with block address in main area v2
f2fs: fix to do sanity check with inline flags
f2fs: fix to reset i_gc_failures correctly
f2fs: fix invalid memory access
f2fs: fix to avoid broken of dnode block list
f2fs: use true and false for boolean values
f2fs: fix to do sanity check with cp_pack_start_sum
f2fs: avoid f2fs_bug_on() in cp_error case
f2fs: fix to clear PG_checked flag in set_page_dirty()
f2fs: fix to active page in lru list for read path
f2fs: don't keep meta pages used for block migration
f2fs: fix to restrict mount condition when without CONFIG_QUOTA
f2fs: quota: do not mount as RDWR without QUOTA if quota feature enabled
f2fs: quota: fix incorrect comments
f2fs: add proc entry to show victim_secmap bitmap
f2fs: let checkpoint flush dnode page of regular
f2fs: issue discard align to section in LFS mode
f2fs: don't allow any writes on aborted atomic writes
f2fs: restrict setting up inode.i_advise
f2fs: fix wrong kernel message when recover fsync data on ro fs
f2fs: clean up ioctl interface naming
f2fs: clean up with f2fs_is_{atomic,volatile}_file()
f2fs: clean up with f2fs_encrypted_inode()
f2fs: clean up with get_current_nat_page
f2fs: kill EXT_TREE_VEC_SIZE
f2fs: avoid duplicated permission check for "trusted." xattrs
f2fs: fix to propagate error from __get_meta_page()
f2fs: fix to do sanity check with i_extra_isize
f2fs: blk_finish_plug of submit_bio in lfs mode
f2fs: do not set free of current section
f2fs: Keep alloc_valid_block_count in sync
f2fs: issue small discard by LBA order
f2fs: stop issuing discard immediately if there is queued IO
f2fs: clean up with IS_INODE()
f2fs: detect bug_on in f2fs_wait_discard_bios
f2fs: fix defined but not used build warnings
f2fs: enable real-time discard by default
f2fs: fix to detect looped node chain correctly
f2fs: fix to do sanity check with block address in main area
f2fs: fix to skip GC if type in SSA and SIT is inconsistent
f2fs: try grabbing node page lock aggressively in sync scenario
f2fs: show the fsync_mode=nobarrier mount option
f2fs: check the right return value of memory alloc function
f2fs: Replace strncpy with memcpy
f2fs: avoid the global name 'fault_name'
f2fs: fix to do sanity check with reserved blkaddr of inline inode
f2fs: fix to do sanity check with node footer and iblocks
f2fs: Allocate and stat mem used by free nid bitmap more accurately
f2fs: fix to do sanity check with user_block_count
f2fs: fix to do sanity check with extra_attr feature
f2fs: fix to correct return value of f2fs_trim_fs
f2fs: fix to do sanity check with {sit,nat}_ver_bitmap_bytesize
f2fs: fix to do sanity check with secs_per_zone
f2fs: disable f2fs_check_rb_tree_consistence
f2fs: introduce and spread verify_blkaddr
f2fs: use timespec64 for inode timestamps
f2fs: fix to wait on page writeback before updating page
f2fs: assign REQ_RAHEAD to bio for ->readpages
f2fs: fix a hungtask problem caused by congestion_wait
f2fs: Fix uninitialized return in f2fs_ioc_shutdown()
f2fs: don't issue discard commands in online discard is on
f2fs: fix to propagate return value of scan_nat_page()
f2fs: support in-memory inode checksum when checking consistency
f2fs: fix error path of fill_super
f2fs: relocate readdir_ra configure initialization
f2fs: move s_res{u,g}id initialization to default_options()
f2fs: don't acquire orphan ino during recovery
f2fs: avoid potential deadlock in f2fs_sbi_store
f2fs: indicate shutdown f2fs to allow unmount successfully
f2fs: keep meta pages in cp_error state
f2fs: do checkpoint in kill_sb
f2fs: allow wrong configured dio to buffered write
f2fs: flush journal nat entries for nat_bits during unmount
Conflicts:
drivers/hid/hid-core.c
Change-Id: Idc486f778059ca65307ab08678f3b1e23c4ec15f
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.159
NFC: Fix possible memory corruption when handling SHDLC I-Frame commands
NFC: Fix the number of pipes
ASoC: cs4265: fix MMTLR Data switch control
ALSA: bebob: use address returned by kmalloc() instead of kernel stack for streaming DMA mapping
ALSA: emu10k1: fix possible info leak to userspace on SNDRV_EMU10K1_IOCTL_INFO
platform/x86: alienware-wmi: Correct a memory leak
xen/netfront: don't bug in case of too many frags
xen/x86/vpmu: Zero struct pt_regs before calling into sample handling code
ring-buffer: Allow for rescheduling when removing pages
mm: shmem.c: Correctly annotate new inodes for lockdep
gso_segment: Reset skb->mac_len after modifying network header
ipv6: fix possible use-after-free in ip6_xmit()
net/appletalk: fix minor pointer leak to userspace in SIOCFINDIPDDPRT
net: hp100: fix always-true check for link up state
neighbour: confirm neigh entries when ARP packet is received
scsi: target: iscsi: Use hex2bin instead of a re-implementation
ocfs2: fix ocfs2 read block panic
drm/nouveau/drm/nouveau: Use pm_runtime_get_noresume() in connector_detect()
tty: vt_ioctl: fix potential Spectre v1
ext4: avoid divide by zero fault when deleting corrupted inline directories
ext4: recalucate superblock checksum after updating free blocks/inodes
ext4: fix online resize's handling of a too-small final block group
ext4: fix online resizing for bigalloc file systems with a 1k block size
ext4: don't mark mmp buffer head dirty
arm64: Add trace_hardirqs_off annotation in ret_to_user
HID: sony: Update device ids
HID: sony: Support DS4 dongle
iw_cxgb4: only allow 1 flush on user qps
Linux 4.4.159
Change-Id: I98239ca60783ca69147f2f11034138fc22e2af65
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit 83f365554e47997ec68dc4eca3f5dce525cd15c3 upstream.
When reducing ring buffer size, pages are removed by scheduling a work
item on each CPU for the corresponding CPU ring buffer. After the pages
are removed from ring buffer linked list, the pages are free()d in a
tight loop. The loop does not give up CPU until all pages are removed.
In a worst case behavior, when lot of pages are to be freed, it can
cause system stall.
After the pages are removed from the list, the free() can happen while
the work is rescheduled. Call cond_resched() in the loop to prevent the
system hangup.
Link: http://lkml.kernel.org/r/20180907223129.71994-1-vnagarnaik@google.com
Cc: stable@vger.kernel.org
Fixes: 83f40318dab00 ("ring-buffer: Make removal of ring buffer pages atomic")
Reported-by: Jason Behmer <jbehmer@google.com>
Signed-off-by: Vaibhav Nagarnaik <vnagarnaik@google.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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It works as boolean so stores like a boolean too.
Bug: 116734731
Test: Set stune
Change-Id: I0daa3cc1723d009ed5bc2a71fa1c2e3d4ece6a7f
Signed-off-by: Wei Wang <wvw@google.com>
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* refs/heads/tmp-f9e4134
Linux 4.4.158
MIPS: VDSO: Match data page cache colouring when D$ aliases
drivers: net: cpsw: fix segfault in case of bad phy-handle
mei: bus: type promotion bug in mei_nfc_if_version()
USB: serial: ti_usb_3410_5052: fix array underflow in completion handler
pinctrl: qcom: spmi-gpio: Fix pmic_gpio_config_get() to be compliant
drm/panel: type promotion bug in s6e8aa0_read_mtp_id()
selftest: timers: Tweak raw_skew to SKIP when ADJ_OFFSET/other clock adjustments are in progress
ALSA: pcm: Fix snd_interval_refine first/last with open min/max
rtc: bq4802: add error handling for devm_ioremap
drm/amdkfd: Fix error codes in kfd_get_process
gpiolib: Mark gpio_suffixes array with __maybe_unused
coresight: tpiu: Fix disabling timeouts
coresight: Handle errors in finding input/output ports
parport: sunbpp: fix error return code
drm/nouveau: tegra: Detach from ARM DMA/IOMMU mapping
ARM: hisi: check of_iomap and fix missing of_node_put
ARM: hisi: fix error handling and missing of_node_put
ARM: hisi: handle of_iomap and fix missing of_node_put
MIPS: loongson64: cs5536: Fix PCI_OHCI_INT_REG reads
mtdchar: fix overflows in adjustment of `count`
audit: fix use-after-free in audit_add_watch
binfmt_elf: Respect error return from `regset->active'
CIFS: fix wrapping bugs in num_entries()
cifs: prevent integer overflow in nxt_dir_entry()
usb: cdc-wdm: Fix a sleep-in-atomic-context bug in service_outstanding_interrupt()
USB: yurex: Fix buffer over-read in yurex_write()
usb: misc: uss720: Fix two sleep-in-atomic-context bugs
USB: serial: io_ti: fix array underflow in completion handler
USB: net2280: Fix erroneous synchronization change
USB: add quirk for WORLDE Controller KS49 or Prodipe MIDI 49C USB controller
usb: host: u132-hcd: Fix a sleep-in-atomic-context bug in u132_get_frame()
usb: Avoid use-after-free by flushing endpoints early in usb_set_interface()
USB: Add quirk to support DJI CineSSD
usb: Don't die twice if PCI xhci host is not responding in resume
misc: hmc6352: fix potential Spectre v1
Tools: hv: Fix a bug in the key delete code
IB/ipoib: Avoid a race condition between start_xmit and cm_rep_handler
xen/netfront: fix waiting for xenbus state change
pstore: Fix incorrect persistent ram buffer mapping
RDMA/cma: Protect cma dev list with lock
xen-netfront: fix warn message as irq device name has '/'
crypto: sharah - Unregister correct algorithms for SAHARA 3
platform/x86: toshiba_acpi: Fix defined but not used build warnings
s390/qeth: reset layer2 attribute on layer switch
s390/qeth: fix race in used-buffer accounting
arm64: dts: qcom: db410c: Fix Bluetooth LED trigger
xen-netfront: fix queue name setting
mac80211: restrict delayed tailroom needed decrement
MIPS: jz4740: Bump zload address
powerpc/powernv: opal_put_chars partial write fix
perf powerpc: Fix callchain ip filtering
ARM: exynos: Clear global variable on init error path
fbdev: Distinguish between interlaced and progressive modes
perf powerpc: Fix callchain ip filtering when return address is in a register
fbdev/via: fix defined but not used warning
video: goldfishfb: fix memory leak on driver remove
fbdev: omapfb: off by one in omapfb_register_client()
mtd/maps: fix solutionengine.c printk format warnings
media: videobuf2-core: check for q->error in vb2_core_qbuf()
MIPS: ath79: fix system restart
dmaengine: pl330: fix irq race with terminate_all
kbuild: add .DELETE_ON_ERROR special target
clk: imx6ul: fix missing of_node_put()
gfs2: Special-case rindex for gfs2_grow
xfrm: fix 'passing zero to ERR_PTR()' warning
ALSA: usb-audio: Fix multiple definitions in AU0828_DEVICE() macro
ALSA: msnd: Fix the default sample sizes
iommu/arm-smmu-v3: sync the OVACKFLG to PRIQ consumer register
BACKPORT: arm/syscalls: Optimize address limit check
UPSTREAM: syscalls: Use CHECK_DATA_CORRUPTION for addr_limit_user_check
BACKPORT: arm64/syscalls: Check address limit on user-mode return
BACKPORT: x86/syscalls: Check address limit on user-mode return
BACKPORT: lkdtm: add bad USER_DS test
UPSTREAM: bug: switch data corruption check to __must_check
BACKPORT: lkdtm: Add tests for struct list corruption
UPSTREAM: bug: Provide toggle for BUG on data corruption
UPSTREAM: list: Split list_del() debug checking into separate function
UPSTREAM: rculist: Consolidate DEBUG_LIST for list_add_rcu()
BACKPORT: list: Split list_add() debug checking into separate function
FROMLIST: ANDROID: binder: Add BINDER_GET_NODE_INFO_FOR_REF ioctl.
Conflicts:
include/linux/bug.h
lib/Kconfig.debug
lib/list_debug.c
Change-Id: I9d87b6b133cac5b642e5e0c928e0bcd0eda6fbdb
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.158
iommu/arm-smmu-v3: sync the OVACKFLG to PRIQ consumer register
ALSA: msnd: Fix the default sample sizes
ALSA: usb-audio: Fix multiple definitions in AU0828_DEVICE() macro
xfrm: fix 'passing zero to ERR_PTR()' warning
gfs2: Special-case rindex for gfs2_grow
clk: imx6ul: fix missing of_node_put()
kbuild: add .DELETE_ON_ERROR special target
dmaengine: pl330: fix irq race with terminate_all
MIPS: ath79: fix system restart
media: videobuf2-core: check for q->error in vb2_core_qbuf()
mtd/maps: fix solutionengine.c printk format warnings
fbdev: omapfb: off by one in omapfb_register_client()
video: goldfishfb: fix memory leak on driver remove
fbdev/via: fix defined but not used warning
perf powerpc: Fix callchain ip filtering when return address is in a register
fbdev: Distinguish between interlaced and progressive modes
ARM: exynos: Clear global variable on init error path
perf powerpc: Fix callchain ip filtering
powerpc/powernv: opal_put_chars partial write fix
MIPS: jz4740: Bump zload address
mac80211: restrict delayed tailroom needed decrement
xen-netfront: fix queue name setting
arm64: dts: qcom: db410c: Fix Bluetooth LED trigger
s390/qeth: fix race in used-buffer accounting
s390/qeth: reset layer2 attribute on layer switch
platform/x86: toshiba_acpi: Fix defined but not used build warnings
crypto: sharah - Unregister correct algorithms for SAHARA 3
xen-netfront: fix warn message as irq device name has '/'
RDMA/cma: Protect cma dev list with lock
pstore: Fix incorrect persistent ram buffer mapping
xen/netfront: fix waiting for xenbus state change
IB/ipoib: Avoid a race condition between start_xmit and cm_rep_handler
Tools: hv: Fix a bug in the key delete code
misc: hmc6352: fix potential Spectre v1
usb: Don't die twice if PCI xhci host is not responding in resume
USB: Add quirk to support DJI CineSSD
usb: Avoid use-after-free by flushing endpoints early in usb_set_interface()
usb: host: u132-hcd: Fix a sleep-in-atomic-context bug in u132_get_frame()
USB: add quirk for WORLDE Controller KS49 or Prodipe MIDI 49C USB controller
USB: net2280: Fix erroneous synchronization change
USB: serial: io_ti: fix array underflow in completion handler
usb: misc: uss720: Fix two sleep-in-atomic-context bugs
USB: yurex: Fix buffer over-read in yurex_write()
usb: cdc-wdm: Fix a sleep-in-atomic-context bug in service_outstanding_interrupt()
cifs: prevent integer overflow in nxt_dir_entry()
CIFS: fix wrapping bugs in num_entries()
binfmt_elf: Respect error return from `regset->active'
audit: fix use-after-free in audit_add_watch
mtdchar: fix overflows in adjustment of `count`
MIPS: loongson64: cs5536: Fix PCI_OHCI_INT_REG reads
ARM: hisi: handle of_iomap and fix missing of_node_put
ARM: hisi: fix error handling and missing of_node_put
ARM: hisi: check of_iomap and fix missing of_node_put
drm/nouveau: tegra: Detach from ARM DMA/IOMMU mapping
parport: sunbpp: fix error return code
coresight: Handle errors in finding input/output ports
coresight: tpiu: Fix disabling timeouts
gpiolib: Mark gpio_suffixes array with __maybe_unused
drm/amdkfd: Fix error codes in kfd_get_process
rtc: bq4802: add error handling for devm_ioremap
ALSA: pcm: Fix snd_interval_refine first/last with open min/max
selftest: timers: Tweak raw_skew to SKIP when ADJ_OFFSET/other clock adjustments are in progress
drm/panel: type promotion bug in s6e8aa0_read_mtp_id()
pinctrl: qcom: spmi-gpio: Fix pmic_gpio_config_get() to be compliant
USB: serial: ti_usb_3410_5052: fix array underflow in completion handler
mei: bus: type promotion bug in mei_nfc_if_version()
drivers: net: cpsw: fix segfault in case of bad phy-handle
MIPS: VDSO: Match data page cache colouring when D$ aliases
Linux 4.4.158
Change-Id: I1e31454733d69774fbb97398fd7756438fb8fa17
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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[ Upstream commit baa2a4fdd525c8c4b0f704d20457195b29437839 ]
audit_add_watch stores locally krule->watch without taking a reference
on watch. Then, it calls audit_add_to_parent, and uses the watch stored
locally.
Unfortunately, it is possible that audit_add_to_parent updates
krule->watch.
When it happens, it also drops a reference of watch which
could free the watch.
How to reproduce (with KASAN enabled):
auditctl -w /etc/passwd -F success=0 -k test_passwd
auditctl -w /etc/passwd -F success=1 -k test_passwd2
The second call to auditctl triggers the use-after-free, because
audit_to_parent updates krule->watch to use a previous existing watch
and drops the reference to the newly created watch.
To fix the issue, we grab a reference of watch and we release it at the
end of the function.
Signed-off-by: Ronny Chevalier <ronny.chevalier@hp.com>
Reviewed-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-c139ea66
Linux 4.4.157
mm: get rid of vmacache_flush_all() entirely
x86/speculation/l1tf: Increase l1tf memory limit for Nehalem+
autofs: fix autofs_sbi() does not check super block type
mtd: ubi: wl: Fix error return code in ubi_wl_init()
crypto: vmx - Fix sleep-in-atomic bugs
ethernet: ti: davinci_emac: add missing of_node_put after calling of_parse_phandle
net: ethernet: ti: cpsw: fix mdio device reference leak
drivers: net: cpsw: fix parsing of phy-handle DT property in dual_emac config
netfilter: x_tables: avoid stack-out-of-bounds read in xt_copy_counters_from_user
vmw_balloon: include asm/io.h
xhci: Fix use-after-free in xhci_free_virt_device
RDMA/cma: Do not ignore net namespace for unbound cm_id
MIPS: WARN_ON invalid DMA cache maintenance, not BUG_ON
f2fs: fix to do sanity check with {sit,nat}_ver_bitmap_bytesize
mfd: ti_am335x_tscadc: Fix struct clk memory leak
iommu/ipmmu-vmsa: Fix allocation in atomic context
partitions/aix: fix usage of uninitialized lv_info and lvname structures
partitions/aix: append null character to print data from disk
Input: atmel_mxt_ts - only use first T9 instance
net: dcb: For wild-card lookups, use priority -1, not 0
MIPS: Octeon: add missing of_node_put()
net: mvneta: fix mtu change on port without link
gpio: ml-ioh: Fix buffer underwrite on probe error path
x86/mm: Remove in_nmi() warning from vmalloc_fault()
Bluetooth: hidp: Fix handling of strncpy for hid->name information
ath10k: disable bundle mgmt tx completion event support
scsi: 3ware: fix return 0 on the error path of probe
ata: libahci: Correct setting of DEVSLP register
MIPS: Fix ISA virt/bus conversion for non-zero PHYS_OFFSET
ath10k: prevent active scans on potential unusable channels
macintosh/via-pmu: Add missing mmio accessors
NFSv4.0 fix client reference leak in callback
perf tools: Allow overriding MAX_NR_CPUS at compile time
f2fs: do not set free of current section
tty: rocket: Fix possible buffer overwrite on register_PCI
uio: potential double frees if __uio_register_device() fails
misc: ti-st: Fix memory leak in the error path of probe()
md/raid5: fix data corruption of replacements after originals dropped
scsi: target: fix __transport_register_session locking
gpio: tegra: Move driver registration to subsys_init level
Bluetooth: h5: Fix missing dependency on BT_HCIUART_SERDEV
ethtool: Remove trailing semicolon for static inline
misc: mic: SCIF Fix scif_get_new_port() error handling
ARC: [plat-axs*]: Enable SWAP
locking/osq_lock: Fix osq_lock queue corruption
selinux: use GFP_NOWAIT in the AVC kmem_caches
locking/rwsem-xadd: Fix missed wakeup due to reordering of load
block,blkcg: use __GFP_NOWARN for best-effort allocations in blkcg
staging/rts5208: Fix read overflow in memcpy
staging: rt5208: Fix a sleep-in-atomic bug in xd_copy_page
kthread: fix boot hang (regression) on MIPS/OpenRISC
kthread: Fix use-after-free if kthread fork fails
cfq: Give a chance for arming slice idle timer in case of group_idle
ALSA: hda - Fix cancel_work_sync() stall from jackpoll work
i2c: i801: fix DNV's SMBCTRL register offset
i2c: xiic: Make the start and the byte count write atomic
Conflicts:
block/blk-cgroup.c
drivers/net/wireless/ath/ath10k/wmi-tlv.c
kernel/locking/rwsem-xadd.c
Change-Id: If6c24e0c16e173dc2a22e047200bbd7a4f11f713
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.157
i2c: xiic: Make the start and the byte count write atomic
i2c: i801: fix DNV's SMBCTRL register offset
ALSA: hda - Fix cancel_work_sync() stall from jackpoll work
cfq: Give a chance for arming slice idle timer in case of group_idle
kthread: Fix use-after-free if kthread fork fails
kthread: fix boot hang (regression) on MIPS/OpenRISC
staging: rt5208: Fix a sleep-in-atomic bug in xd_copy_page
staging/rts5208: Fix read overflow in memcpy
block,blkcg: use __GFP_NOWARN for best-effort allocations in blkcg
locking/rwsem-xadd: Fix missed wakeup due to reordering of load
selinux: use GFP_NOWAIT in the AVC kmem_caches
locking/osq_lock: Fix osq_lock queue corruption
ARC: [plat-axs*]: Enable SWAP
misc: mic: SCIF Fix scif_get_new_port() error handling
ethtool: Remove trailing semicolon for static inline
Bluetooth: h5: Fix missing dependency on BT_HCIUART_SERDEV
gpio: tegra: Move driver registration to subsys_init level
scsi: target: fix __transport_register_session locking
md/raid5: fix data corruption of replacements after originals dropped
misc: ti-st: Fix memory leak in the error path of probe()
uio: potential double frees if __uio_register_device() fails
tty: rocket: Fix possible buffer overwrite on register_PCI
f2fs: do not set free of current section
perf tools: Allow overriding MAX_NR_CPUS at compile time
NFSv4.0 fix client reference leak in callback
macintosh/via-pmu: Add missing mmio accessors
ath10k: prevent active scans on potential unusable channels
MIPS: Fix ISA virt/bus conversion for non-zero PHYS_OFFSET
ata: libahci: Correct setting of DEVSLP register
scsi: 3ware: fix return 0 on the error path of probe
ath10k: disable bundle mgmt tx completion event support
Bluetooth: hidp: Fix handling of strncpy for hid->name information
x86/mm: Remove in_nmi() warning from vmalloc_fault()
gpio: ml-ioh: Fix buffer underwrite on probe error path
net: mvneta: fix mtu change on port without link
MIPS: Octeon: add missing of_node_put()
net: dcb: For wild-card lookups, use priority -1, not 0
Input: atmel_mxt_ts - only use first T9 instance
partitions/aix: append null character to print data from disk
partitions/aix: fix usage of uninitialized lv_info and lvname structures
iommu/ipmmu-vmsa: Fix allocation in atomic context
mfd: ti_am335x_tscadc: Fix struct clk memory leak
f2fs: fix to do sanity check with {sit,nat}_ver_bitmap_bytesize
MIPS: WARN_ON invalid DMA cache maintenance, not BUG_ON
RDMA/cma: Do not ignore net namespace for unbound cm_id
xhci: Fix use-after-free in xhci_free_virt_device
vmw_balloon: include asm/io.h
netfilter: x_tables: avoid stack-out-of-bounds read in xt_copy_counters_from_user
drivers: net: cpsw: fix parsing of phy-handle DT property in dual_emac config
net: ethernet: ti: cpsw: fix mdio device reference leak
ethernet: ti: davinci_emac: add missing of_node_put after calling of_parse_phandle
crypto: vmx - Fix sleep-in-atomic bugs
mtd: ubi: wl: Fix error return code in ubi_wl_init()
autofs: fix autofs_sbi() does not check super block type
x86/speculation/l1tf: Increase l1tf memory limit for Nehalem+
mm: get rid of vmacache_flush_all() entirely
Linux 4.4.157
Change-Id: I30fc9e099e9065aff5e53c648d822c405525bb07
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit 50972fe78f24f1cd0b9d7bbf1f87d2be9e4f412e upstream.
Fix ordering of link creation between node->prev and prev->next in
osq_lock(). A case in which the status of optimistic spin queue is
CPU6->CPU2 in which CPU6 has acquired the lock.
tail
v
,-. <- ,-.
|6| |2|
`-' -> `-'
At this point if CPU0 comes in to acquire osq_lock, it will update the
tail count.
CPU2 CPU0
----------------------------------
tail
v
,-. <- ,-. ,-.
|6| |2| |0|
`-' -> `-' `-'
After tail count update if CPU2 starts to unqueue itself from
optimistic spin queue, it will find an updated tail count with CPU0 and
update CPU2 node->next to NULL in osq_wait_next().
unqueue-A
tail
v
,-. <- ,-. ,-.
|6| |2| |0|
`-' `-' `-'
unqueue-B
->tail != curr && !node->next
If reordering of following stores happen then prev->next where prev
being CPU2 would be updated to point to CPU0 node:
tail
v
,-. <- ,-. ,-.
|6| |2| |0|
`-' `-' -> `-'
osq_wait_next()
node->next <- 0
xchg(node->next, NULL)
tail
v
,-. <- ,-. ,-.
|6| |2| |0|
`-' `-' `-'
unqueue-C
At this point if next instruction
WRITE_ONCE(next->prev, prev);
in CPU2 path is committed before the update of CPU0 node->prev = prev then
CPU0 node->prev will point to CPU6 node.
tail
v----------. v
,-. <- ,-. ,-.
|6| |2| |0|
`-' `-' `-'
`----------^
At this point if CPU0 path's node->prev = prev is committed resulting
in change of CPU0 prev back to CPU2 node. CPU2 node->next is NULL
currently,
tail
v
,-. <- ,-. <- ,-.
|6| |2| |0|
`-' `-' `-'
`----------^
so if CPU0 gets into unqueue path of osq_lock it will keep spinning
in infinite loop as condition prev->next == node will never be true.
Signed-off-by: Prateek Sood <prsood@codeaurora.org>
[ Added pictures, rewrote comments. ]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: sramana@codeaurora.org
Link: http://lkml.kernel.org/r/1500040076-27626-1-git-send-email-prsood@codeaurora.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9c29c31830a4eca724e137a9339137204bbb31be upstream.
If a spinner is present, there is a chance that the load of
rwsem_has_spinner() in rwsem_wake() can be reordered with
respect to decrement of rwsem count in __up_write() leading
to wakeup being missed:
spinning writer up_write caller
--------------- -----------------------
[S] osq_unlock() [L] osq
spin_lock(wait_lock)
sem->count=0xFFFFFFFF00000001
+0xFFFFFFFF00000000
count=sem->count
MB
sem->count=0xFFFFFFFE00000001
-0xFFFFFFFF00000001
spin_trylock(wait_lock)
return
rwsem_try_write_lock(count)
spin_unlock(wait_lock)
schedule()
Reordering of atomic_long_sub_return_release() in __up_write()
and rwsem_has_spinner() in rwsem_wake() can cause missing of
wakeup in up_write() context. In spinning writer, sem->count
and local variable count is 0XFFFFFFFE00000001. It would result
in rwsem_try_write_lock() failing to acquire rwsem and spinning
writer going to sleep in rwsem_down_write_failed().
The smp_rmb() will make sure that the spinner state is
consulted after sem->count is updated in up_write context.
Signed-off-by: Prateek Sood <prsood@codeaurora.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dave@stgolabs.net
Cc: longman@redhat.com
Cc: parri.andrea@gmail.com
Cc: sramana@codeaurora.org
Link: http://lkml.kernel.org/r/1504794658-15397-1-git-send-email-prsood@codeaurora.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 4d6501dce079c1eb6bf0b1d8f528a5e81770109e upstream.
If a kthread forks (e.g. usermodehelper since commit 1da5c46fa965) but
fails in copy_process() between calling dup_task_struct() and setting
p->set_child_tid, then the value of p->set_child_tid will be inherited
from the parent and get prematurely freed by free_kthread_struct().
kthread()
- worker_thread()
- process_one_work()
| - call_usermodehelper_exec_work()
| - kernel_thread()
| - _do_fork()
| - copy_process()
| - dup_task_struct()
| - arch_dup_task_struct()
| - tsk->set_child_tid = current->set_child_tid // implied
| - ...
| - goto bad_fork_*
| - ...
| - free_task(tsk)
| - free_kthread_struct(tsk)
| - kfree(tsk->set_child_tid)
- ...
- schedule()
- __schedule()
- wq_worker_sleeping()
- kthread_data(task)->flags // UAF
The problem started showing up with commit 1da5c46fa965 since it reused
->set_child_tid for the kthread worker data.
A better long-term solution might be to get rid of the ->set_child_tid
abuse. The comment in set_kthread_struct() also looks slightly wrong.
Debugged-by: Jamie Iles <jamie.iles@oracle.com>
Fixes: 1da5c46fa965 ("kthread: Make struct kthread kmalloc'ed")
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jamie Iles <jamie.iles@oracle.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20170509073959.17858-1-vegard.nossum@oracle.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-7eb7037
Linux 4.4.156
btrfs: use correct compare function of dirty_metadata_bytes
ASoC: wm8994: Fix missing break in switch
s390/lib: use expoline for all bcr instructions
mei: me: allow runtime pm for platform with D0i3
sch_tbf: fix two null pointer dereferences on init failure
sch_netem: avoid null pointer deref on init failure
sch_hhf: fix null pointer dereference on init failure
sch_multiq: fix double free on init failure
sch_htb: fix crash on init failure
ovl: proper cleanup of workdir
ovl: override creds with the ones from the superblock mounter
ovl: rename is_merge to is_lowest
irqchip/gic: Make interrupt ID 1020 invalid
irqchip/gic-v3: Add missing barrier to 32bit version of gic_read_iar()
irqchip/gicv3-its: Avoid cache flush beyond ITS_BASERn memory size
irqchip/gicv3-its: Fix memory leak in its_free_tables()
irqchip/gic-v3-its: Recompute the number of pages on page size change
genirq: Delay incrementing interrupt count if it's disabled/pending
Fixes: Commit cdbf92675fad ("mm: numa: avoid waiting on freed migrated pages")
enic: do not call enic_change_mtu in enic_probe
Revert "ARM: imx_v6_v7_defconfig: Select ULPI support"
irda: Only insert new objects into the global database via setsockopt
irda: Fix memory leak caused by repeated binds of irda socket
kbuild: make missing $DEPMOD a Warning instead of an Error
x86/pae: use 64 bit atomic xchg function in native_ptep_get_and_clear
debugobjects: Make stack check warning more informative
btrfs: Don't remove block group that still has pinned down bytes
btrfs: relocation: Only remove reloc rb_trees if reloc control has been initialized
btrfs: replace: Reset on-disk dev stats value after replace
powerpc/pseries: Avoid using the size greater than RTAS_ERROR_LOG_MAX.
SMB3: Number of requests sent should be displayed for SMB3 not just CIFS
smb3: fix reset of bytes read and written stats
selftests/powerpc: Kill child processes on SIGINT
staging: comedi: ni_mio_common: fix subdevice flags for PFI subdevice
dm kcopyd: avoid softlockup in run_complete_job
PCI: mvebu: Fix I/O space end address calculation
scsi: aic94xx: fix an error code in aic94xx_init()
s390/dasd: fix hanging offline processing due to canceled worker
powerpc: Fix size calculation using resource_size()
net/9p: fix error path of p9_virtio_probe
irqchip/bcm7038-l1: Hide cpu offline callback when building for !SMP
platform/x86: asus-nb-wmi: Add keymap entry for lid flip action on UX360
mfd: sm501: Set coherent_dma_mask when creating subdevices
ipvs: fix race between ip_vs_conn_new() and ip_vs_del_dest()
fs/dcache.c: fix kmemcheck splat at take_dentry_name_snapshot()
mm/fadvise.c: fix signed overflow UBSAN complaint
scripts: modpost: check memory allocation results
fat: validate ->i_start before using
hfsplus: fix NULL dereference in hfsplus_lookup()
reiserfs: change j_timestamp type to time64_t
fork: don't copy inconsistent signal handler state to child
hfs: prevent crash on exit from failed search
hfsplus: don't return 0 when fill_super() failed
cifs: check if SMB2 PDU size has been padded and suppress the warning
vti6: remove !skb->ignore_df check from vti6_xmit()
tcp: do not restart timewait timer on rst reception
qlge: Fix netdev features configuration.
net: bcmgenet: use MAC link status for fixed phy
staging: android: ion: fix ION_IOC_{MAP,SHARE} use-after-free
x86/speculation/l1tf: Fix up pte->pfn conversion for PAE
Conflicts:
drivers/staging/android/ion/ion.c
Change-Id: I7153f61c3a676a788f64eeb8bab13e840bbbf985
[readded the function ion_handle_get_by_id() which got deleted with
commit 'staging: android: ion: fix ION_IOC_{MAP,SHARE} use-after-free'
since it is used in msm/msm_ion.c]
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.156
x86/speculation/l1tf: Fix up pte->pfn conversion for PAE
staging: android: ion: fix ION_IOC_{MAP,SHARE} use-after-free
net: bcmgenet: use MAC link status for fixed phy
qlge: Fix netdev features configuration.
tcp: do not restart timewait timer on rst reception
vti6: remove !skb->ignore_df check from vti6_xmit()
cifs: check if SMB2 PDU size has been padded and suppress the warning
hfsplus: don't return 0 when fill_super() failed
hfs: prevent crash on exit from failed search
fork: don't copy inconsistent signal handler state to child
reiserfs: change j_timestamp type to time64_t
hfsplus: fix NULL dereference in hfsplus_lookup()
fat: validate ->i_start before using
scripts: modpost: check memory allocation results
mm/fadvise.c: fix signed overflow UBSAN complaint
fs/dcache.c: fix kmemcheck splat at take_dentry_name_snapshot()
ipvs: fix race between ip_vs_conn_new() and ip_vs_del_dest()
mfd: sm501: Set coherent_dma_mask when creating subdevices
platform/x86: asus-nb-wmi: Add keymap entry for lid flip action on UX360
irqchip/bcm7038-l1: Hide cpu offline callback when building for !SMP
net/9p: fix error path of p9_virtio_probe
powerpc: Fix size calculation using resource_size()
s390/dasd: fix hanging offline processing due to canceled worker
scsi: aic94xx: fix an error code in aic94xx_init()
PCI: mvebu: Fix I/O space end address calculation
dm kcopyd: avoid softlockup in run_complete_job
staging: comedi: ni_mio_common: fix subdevice flags for PFI subdevice
selftests/powerpc: Kill child processes on SIGINT
smb3: fix reset of bytes read and written stats
SMB3: Number of requests sent should be displayed for SMB3 not just CIFS
powerpc/pseries: Avoid using the size greater than RTAS_ERROR_LOG_MAX.
btrfs: replace: Reset on-disk dev stats value after replace
btrfs: relocation: Only remove reloc rb_trees if reloc control has been initialized
btrfs: Don't remove block group that still has pinned down bytes
debugobjects: Make stack check warning more informative
x86/pae: use 64 bit atomic xchg function in native_ptep_get_and_clear
kbuild: make missing $DEPMOD a Warning instead of an Error
irda: Fix memory leak caused by repeated binds of irda socket
irda: Only insert new objects into the global database via setsockopt
Revert "ARM: imx_v6_v7_defconfig: Select ULPI support"
enic: do not call enic_change_mtu in enic_probe
Fixes: Commit cdbf92675fad ("mm: numa: avoid waiting on freed migrated pages")
genirq: Delay incrementing interrupt count if it's disabled/pending
irqchip/gic-v3-its: Recompute the number of pages on page size change
irqchip/gicv3-its: Fix memory leak in its_free_tables()
irqchip/gicv3-its: Avoid cache flush beyond ITS_BASERn memory size
irqchip/gic-v3: Add missing barrier to 32bit version of gic_read_iar()
irqchip/gic: Make interrupt ID 1020 invalid
ovl: rename is_merge to is_lowest
ovl: override creds with the ones from the superblock mounter
ovl: proper cleanup of workdir
sch_htb: fix crash on init failure
sch_multiq: fix double free on init failure
sch_hhf: fix null pointer dereference on init failure
sch_netem: avoid null pointer deref on init failure
sch_tbf: fix two null pointer dereferences on init failure
mei: me: allow runtime pm for platform with D0i3
s390/lib: use expoline for all bcr instructions
ASoC: wm8994: Fix missing break in switch
btrfs: use correct compare function of dirty_metadata_bytes
Linux 4.4.156
Change-Id: Ia12d5f0a8ae43215e26b67f5db492738496635b7
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit a946e8c717f9355d1abd5408ed0adc0002d1aed1 upstream.
In case of a wakeup interrupt, irq_pm_check_wakeup disables the interrupt
and marks it pending and suspended, disables it and notifies the pm core
about the wake event. The interrupt gets handled later once the system
is resumed.
However the irq stats is updated twice: once when it's disabled waiting
for the system to resume and later when it's handled, resulting in wrong
counting of the wakeup interrupt when waking up the system.
This patch updates the interrupt count so that it's updated only when
the interrupt gets handled. It's already handled correctly in
handle_edge_irq and handle_edge_eoi_irq.
Reported-by: Manoil Claudiu <claudiu.manoil@freescale.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/1446661957-1019-1-git-send-email-sudeep.holla@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 06e62a46bbba20aa5286102016a04214bb446141 ]
Before this change, if a multithreaded process forks while one of its
threads is changing a signal handler using sigaction(), the memcpy() in
copy_sighand() can race with the struct assignment in do_sigaction(). It
isn't clear whether this can cause corruption of the userspace signal
handler pointer, but it definitely can cause inconsistency between
different fields of struct sigaction.
Take the appropriate spinlock to avoid this.
I have tested that this patch prevents inconsistency between sa_sigaction
and sa_flags, which is possible before this patch.
Link: http://lkml.kernel.org/r/20180702145108.73189-1-jannh@google.com
Signed-off-by: Jann Horn <jannh@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Oleg Nesterov <oleg@redhat.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>
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* refs/heads/tmp-b3f777e
Linux 4.4.155
drm/drivers: add support for using the arch wc mapping API.
x86/io: add interface to reserve io memtype for a resource range. (v1.1)
fs/quota: Fix spectre gadget in do_quotactl
perf auxtrace: Fix queue resize
bcache: release dc->writeback_lock properly in bch_writeback_thread()
getxattr: use correct xattr length
udlfb: set optimal write delay
fb: fix lost console when the user unplugs a USB adapter
pwm: tiehrpwm: Fix disabling of output of PWMs
ubifs: Fix synced_i_size calculation for xattr inodes
ubifs: Check data node size before truncate
Revert "UBIFS: Fix potential integer overflow in allocation"
ubifs: Fix memory leak in lprobs self-check
userns: move user access out of the mutex
sys: don't hold uts_sem while accessing userspace memory
osf_getdomainname(): use copy_to_user()
iommu/vt-d: Fix dev iotlb pfsid use
iommu/vt-d: Add definitions for PFSID
mm/tlb: Remove tlb_remove_table() non-concurrent condition
ARM: tegra: Fix Tegra30 Cardhu PCA954x reset
pnfs/blocklayout: off by one in bl_map_stripe()
PM / sleep: wakeup: Fix build error caused by missing SRCU support
9p: fix multiple NULL-pointer-dereferences
uprobes: Use synchronize_rcu() not synchronize_sched()
kthread, tracing: Don't expose half-written comm when creating kthreads
tracing/blktrace: Fix to allow setting same value
tracing: Do not call start/stop() functions when tracing_on does not change
vmw_balloon: fix VMCI use when balloon built into kernel
vmw_balloon: VMCI_DOORBELL_SET does not check status
vmw_balloon: do not use 2MB without batching
vmw_balloon: fix inflation of 64-bit GFNs
iio: ad9523: Fix return value for ad952x_store()
iio: ad9523: Fix displayed phase
dm cache metadata: save in-core policy_hint_size to on-disk superblock
x86/mm/pat: Fix L1TF stable backport for CPA, 2nd call
net/9p/trans_fd.c: fix race-condition by flushing workqueue before the kfree()
net/9p/client.c: version pointer uninitialized
9p/virtio: fix off-by-one error in sg list bounds check
fs/9p/xattr.c: catch the error of p9_client_clunk when setting xattr failed
powerpc/pseries: Fix endianness while restoring of r3 in MCE handler.
powerpc/fadump: handle crash memory ranges array index overflow
drm/i915/userptr: reject zero user_size
spi: davinci: fix a NULL pointer dereference
net: lan78xx: Fix misplaced tasklet_schedule() call
9p/net: Fix zero-copy path in the 9p virtio transport
net: mac802154: tx: expand tailroom if necessary
net: 6lowpan: fix reserved space for single frames
BACKPORT: arm64/vdso: Fix nsec handling for CLOCK_MONOTONIC_RAW
ANDROID: arm64: mm: fix 4.4.154 merge
Change-Id: Id5969245c97b88f9618cb6123e992ea4540ca434
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.155
net: 6lowpan: fix reserved space for single frames
net: mac802154: tx: expand tailroom if necessary
9p/net: Fix zero-copy path in the 9p virtio transport
net: lan78xx: Fix misplaced tasklet_schedule() call
spi: davinci: fix a NULL pointer dereference
drm/i915/userptr: reject zero user_size
powerpc/fadump: handle crash memory ranges array index overflow
powerpc/pseries: Fix endianness while restoring of r3 in MCE handler.
fs/9p/xattr.c: catch the error of p9_client_clunk when setting xattr failed
9p/virtio: fix off-by-one error in sg list bounds check
net/9p/client.c: version pointer uninitialized
net/9p/trans_fd.c: fix race-condition by flushing workqueue before the kfree()
x86/mm/pat: Fix L1TF stable backport for CPA, 2nd call
dm cache metadata: save in-core policy_hint_size to on-disk superblock
iio: ad9523: Fix displayed phase
iio: ad9523: Fix return value for ad952x_store()
vmw_balloon: fix inflation of 64-bit GFNs
vmw_balloon: do not use 2MB without batching
vmw_balloon: VMCI_DOORBELL_SET does not check status
vmw_balloon: fix VMCI use when balloon built into kernel
tracing: Do not call start/stop() functions when tracing_on does not change
tracing/blktrace: Fix to allow setting same value
kthread, tracing: Don't expose half-written comm when creating kthreads
uprobes: Use synchronize_rcu() not synchronize_sched()
9p: fix multiple NULL-pointer-dereferences
PM / sleep: wakeup: Fix build error caused by missing SRCU support
pnfs/blocklayout: off by one in bl_map_stripe()
ARM: tegra: Fix Tegra30 Cardhu PCA954x reset
mm/tlb: Remove tlb_remove_table() non-concurrent condition
iommu/vt-d: Add definitions for PFSID
iommu/vt-d: Fix dev iotlb pfsid use
osf_getdomainname(): use copy_to_user()
sys: don't hold uts_sem while accessing userspace memory
userns: move user access out of the mutex
ubifs: Fix memory leak in lprobs self-check
Revert "UBIFS: Fix potential integer overflow in allocation"
ubifs: Check data node size before truncate
ubifs: Fix synced_i_size calculation for xattr inodes
pwm: tiehrpwm: Fix disabling of output of PWMs
fb: fix lost console when the user unplugs a USB adapter
udlfb: set optimal write delay
getxattr: use correct xattr length
bcache: release dc->writeback_lock properly in bch_writeback_thread()
perf auxtrace: Fix queue resize
fs/quota: Fix spectre gadget in do_quotactl
x86/io: add interface to reserve io memtype for a resource range. (v1.1)
drm/drivers: add support for using the arch wc mapping API.
Linux 4.4.155
Change-Id: Ie455609e00dd70d3fa723cd254f544109db8a788
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit 5820f140edef111a9ea2ef414ab2428b8cb805b1 upstream.
The old code would hold the userns_state_mutex indefinitely if
memdup_user_nul stalled due to e.g. a userfault region. Prevent that by
moving the memdup_user_nul in front of the mutex_lock().
Note: This changes the error precedence of invalid buf/count/*ppos vs
map already written / capabilities missing.
Fixes: 22d917d80e84 ("userns: Rework the user_namespace adding uid/gid...")
Cc: stable@vger.kernel.org
Signed-off-by: Jann Horn <jannh@google.com>
Acked-by: Christian Brauner <christian@brauner.io>
Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 42a0cc3478584d4d63f68f2f5af021ddbea771fa upstream.
Holding uts_sem as a writer while accessing userspace memory allows a
namespace admin to stall all processes that attempt to take uts_sem.
Instead, move data through stack buffers and don't access userspace memory
while uts_sem is held.
Cc: stable@vger.kernel.org
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3df6f61fff49632492490fb6e42646b803a9958a upstream.
Commit ea0212f40c6 (power: auto select CONFIG_SRCU) made the code in
drivers/base/power/wakeup.c use SRCU instead of RCU, but it forgot to
select CONFIG_SRCU in Kconfig, which leads to the following build
error if CONFIG_SRCU is not selected somewhere else:
drivers/built-in.o: In function `wakeup_source_remove':
(.text+0x3c6fc): undefined reference to `synchronize_srcu'
drivers/built-in.o: In function `pm_print_active_wakeup_sources':
(.text+0x3c7a8): undefined reference to `__srcu_read_lock'
drivers/built-in.o: In function `pm_print_active_wakeup_sources':
(.text+0x3c84c): undefined reference to `__srcu_read_unlock'
drivers/built-in.o: In function `device_wakeup_arm_wake_irqs':
(.text+0x3d1d8): undefined reference to `__srcu_read_lock'
drivers/built-in.o: In function `device_wakeup_arm_wake_irqs':
(.text+0x3d228): undefined reference to `__srcu_read_unlock'
drivers/built-in.o: In function `device_wakeup_disarm_wake_irqs':
(.text+0x3d24c): undefined reference to `__srcu_read_lock'
drivers/built-in.o: In function `device_wakeup_disarm_wake_irqs':
(.text+0x3d29c): undefined reference to `__srcu_read_unlock'
drivers/built-in.o:(.data+0x4158): undefined reference to `process_srcu'
Fix this error by selecting CONFIG_SRCU when PM_SLEEP is enabled.
Fixes: ea0212f40c6 (power: auto select CONFIG_SRCU)
Cc: 4.2+ <stable@vger.kernel.org> # 4.2+
Signed-off-by: zhangyi (F) <yi.zhang@huawei.com>
[ rjw: Minor subject/changelog fixups ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 016f8ffc48cb01d1e7701649c728c5d2e737d295 upstream.
While debugging another bug, I was looking at all the synchronize*()
functions being used in kernel/trace, and noticed that trace_uprobes was
using synchronize_sched(), with a comment to synchronize with
{u,ret}_probe_trace_func(). When looking at those functions, the data is
protected with "rcu_read_lock()" and not with "rcu_read_lock_sched()". This
is using the wrong synchronize_*() function.
Link: http://lkml.kernel.org/r/20180809160553.469e1e32@gandalf.local.home
Cc: stable@vger.kernel.org
Fixes: 70ed91c6ec7f8 ("tracing/uprobes: Support ftrace_event_file base multibuffer")
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3e536e222f2930534c252c1cc7ae799c725c5ff9 upstream.
There is a window for racing when printing directly to task->comm,
allowing other threads to see a non-terminated string. The vsnprintf
function fills the buffer, counts the truncated chars, then finally
writes the \0 at the end.
creator other
vsnprintf:
fill (not terminated)
count the rest trace_sched_waking(p):
... memcpy(comm, p->comm, TASK_COMM_LEN)
write \0
The consequences depend on how 'other' uses the string. In our case,
it was copied into the tracing system's saved cmdlines, a buffer of
adjacent TASK_COMM_LEN-byte buffers (note the 'n' where 0 should be):
crash-arm64> x/1024s savedcmd->saved_cmdlines | grep 'evenk'
0xffffffd5b3818640: "irq/497-pwr_evenkworker/u16:12"
...and a strcpy out of there would cause stack corruption:
[224761.522292] Kernel panic - not syncing: stack-protector:
Kernel stack is corrupted in: ffffff9bf9783c78
crash-arm64> kbt | grep 'comm\|trace_print_context'
#6 0xffffff9bf9783c78 in trace_print_context+0x18c(+396)
comm (char [16]) = "irq/497-pwr_even"
crash-arm64> rd 0xffffffd4d0e17d14 8
ffffffd4d0e17d14: 2f71726900000000 5f7277702d373934 ....irq/497-pwr_
ffffffd4d0e17d24: 726f776b6e657665 3a3631752f72656b evenkworker/u16:
ffffffd4d0e17d34: f9780248ff003231 cede60e0ffffff9b 12..H.x......`..
ffffffd4d0e17d44: cede60c8ffffffd4 00000fffffffffd4 .....`..........
The workaround in e09e28671 (use strlcpy in __trace_find_cmdline) was
likely needed because of this same bug.
Solved by vsnprintf:ing to a local buffer, then using set_task_comm().
This way, there won't be a window where comm is not terminated.
Link: http://lkml.kernel.org/r/20180726071539.188015-1-snild@sony.com
Cc: stable@vger.kernel.org
Fixes: bc0c38d139ec7 ("ftrace: latency tracer infrastructure")
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Snild Dolkow <snild@sony.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
[backported to 3.18 / 4.4 by Snild]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 757d9140072054528b13bbe291583d9823cde195 upstream.
Masami Hiramatsu reported:
Current trace-enable attribute in sysfs returns an error
if user writes the same setting value as current one,
e.g.
# cat /sys/block/sda/trace/enable
0
# echo 0 > /sys/block/sda/trace/enable
bash: echo: write error: Invalid argument
# echo 1 > /sys/block/sda/trace/enable
# echo 1 > /sys/block/sda/trace/enable
bash: echo: write error: Device or resource busy
But this is not a preferred behavior, it should ignore
if new setting is same as current one. This fixes the
problem as below.
# cat /sys/block/sda/trace/enable
0
# echo 0 > /sys/block/sda/trace/enable
# echo 1 > /sys/block/sda/trace/enable
# echo 1 > /sys/block/sda/trace/enable
Link: http://lkml.kernel.org/r/20180816103802.08678002@gandalf.local.home
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Cc: stable@vger.kernel.org
Fixes: cd649b8bb830d ("blktrace: remove sysfs_blk_trace_enable_show/store()")
Reported-by: Masami Hiramatsu <mhiramat@kernel.org>
Tested-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f143641bfef9a4a60c57af30de26c63057e7e695 upstream.
Currently, when one echo's in 1 into tracing_on, the current tracer's
"start()" function is executed, even if tracing_on was already one. This can
lead to strange side effects. One being that if the hwlat tracer is enabled,
and someone does "echo 1 > tracing_on" into tracing_on, the hwlat tracer's
start() function is called again which will recreate another kernel thread,
and make it unable to remove the old one.
Link: http://lkml.kernel.org/r/1533120354-22923-1-git-send-email-erica.bugden@linutronix.de
Cc: stable@vger.kernel.org
Fixes: 2df8f8a6a897e ("tracing: Fix regression with irqsoff tracer and tracing_on file")
Reported-by: Erica Bugden <erica.bugden@linutronix.de>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-d762e28
Linux 4.4.154
cdrom: Fix info leak/OOB read in cdrom_ioctl_drive_status
iscsi target: fix session creation failure handling
scsi: core: Avoid that SCSI device removal through sysfs triggers a deadlock
scsi: sysfs: Introduce sysfs_{un,}break_active_protection()
MIPS: lib: Provide MIPS64r6 __multi3() for GCC < 7
MIPS: Correct the 64-bit DSP accumulator register size
kprobes: Make list and blacklist root user read only
s390/pci: fix out of bounds access during irq setup
s390/qdio: reset old sbal_state flags
s390: fix br_r1_trampoline for machines without exrl
x86/spectre: Add missing family 6 check to microcode check
x86/irqflags: Mark native_restore_fl extern inline
pinctrl: freescale: off by one in imx1_pinconf_group_dbg_show()
ASoC: sirf: Fix potential NULL pointer dereference
ASoC: dpcm: don't merge format from invalid codec dai
udl-kms: fix crash due to uninitialized memory
udl-kms: handle allocation failure
udl-kms: change down_interruptible to down
fuse: Add missed unlock_page() to fuse_readpages_fill()
fuse: Fix oops at process_init_reply()
fuse: umount should wait for all requests
fuse: fix unlocked access to processing queue
fuse: fix double request_end()
fuse: Don't access pipe->buffers without pipe_lock()
x86/process: Re-export start_thread()
x86/speculation/l1tf: Suggest what to do on systems with too much RAM
x86/speculation/l1tf: Fix off-by-one error when warning that system has too much RAM
x86/speculation/l1tf: Fix overflow in l1tf_pfn_limit() on 32bit
KVM: arm/arm64: Skip updating PMD entry if no change
KVM: arm/arm64: Skip updating PTE entry if no change
arm64: mm: check for upper PAGE_SHIFT bits in pfn_valid()
ext4: reset error code in ext4_find_entry in fallback
ext4: sysfs: print ext4_super_block fields as little-endian
ext4: check for NUL characters in extended attribute's name
s390/kvm: fix deadlock when killed by oom
btrfs: don't leak ret from do_chunk_alloc
smb3: don't request leases in symlink creation and query
smb3: Do not send SMB3 SET_INFO if nothing changed
cifs: check kmalloc before use
cifs: add missing debug entries for kconfig options
mm/memory.c: check return value of ioremap_prot
scsi: vmw_pvscsi: Return DID_RESET for status SAM_STAT_COMMAND_TERMINATED
scsi: fcoe: drop frames in ELS LOGO error path
drivers: net: lmc: fix case value for target abort error
arc: fix type warnings in arc/mm/cache.c
arc: fix build errors in arc/include/asm/delay.h
enic: handle mtu change for vf properly
Revert "MIPS: BCM47XX: Enable 74K Core ExternalSync for PCIe erratum"
tools/power turbostat: Read extended processor family from CPUID
zswap: re-check zswap_is_full() after do zswap_shrink()
selftests/ftrace: Add snapshot and tracing_on test case
cachefiles: Wait rather than BUG'ing on "Unexpected object collision"
cachefiles: Fix refcounting bug in backing-file read monitoring
fscache: Allow cancelled operations to be enqueued
net: axienet: Fix double deregister of mdio
bnx2x: Fix invalid memory access in rss hash config path.
media: staging: omap4iss: Include asm/cacheflush.h after generic includes
i2c: davinci: Avoid zero value of CLKH
can: mpc5xxx_can: check of_iomap return before use
net: prevent ISA drivers from building on PPC32
atl1c: reserve min skb headroom
qed: Fix possible race for the link state value.
net: caif: Add a missing rcu_read_unlock() in caif_flow_cb
tools/power turbostat: fix -S on UP systems
usb: gadget: f_uac2: fix endianness of 'struct cntrl_*_lay3'
tools: usb: ffs-test: Fix build on big endian systems
usb/phy: fix PPC64 build errors in phy-fsl-usb.c
usb: gadget: r8a66597: Fix a possible sleep-in-atomic-context bugs in r8a66597_queue()
usb: gadget: r8a66597: Fix two possible sleep-in-atomic-context bugs in init_controller()
drm/imx: imx-ldb: check if channel is enabled before printing warning
drm/imx: imx-ldb: disable LDB on driver bind
scsi: libiscsi: fix possible NULL pointer dereference in case of TMF
drm/bridge: adv7511: Reset registers on hotplug
nl80211: Add a missing break in parse_station_flags
mac80211: add stations tied to AP_VLANs during hw reconfig
xfrm: free skb if nlsk pointer is NULL
xfrm: fix missing dst_release() after policy blocking lbcast and multicast
vti6: fix PMTU caching and reporting on xmit
Cipso: cipso_v4_optptr enter infinite loop
sched/sysctl: Check user input value of sysctl_sched_time_avg
BACKPORT: zram: drop max_zpage_size and use zs_huge_class_size()
BACKPORT: zsmalloc: introduce zs_huge_class_size()
ANDROID: tracing: fix race condition reading saved tgids
Conflicts:
mm/zsmalloc.c
Change-Id: I1add2f0311c887c135ddc6160963702beeb7bb88
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.154
sched/sysctl: Check user input value of sysctl_sched_time_avg
Cipso: cipso_v4_optptr enter infinite loop
vti6: fix PMTU caching and reporting on xmit
xfrm: fix missing dst_release() after policy blocking lbcast and multicast
xfrm: free skb if nlsk pointer is NULL
mac80211: add stations tied to AP_VLANs during hw reconfig
nl80211: Add a missing break in parse_station_flags
drm/bridge: adv7511: Reset registers on hotplug
scsi: libiscsi: fix possible NULL pointer dereference in case of TMF
drm/imx: imx-ldb: disable LDB on driver bind
drm/imx: imx-ldb: check if channel is enabled before printing warning
usb: gadget: r8a66597: Fix two possible sleep-in-atomic-context bugs in init_controller()
usb: gadget: r8a66597: Fix a possible sleep-in-atomic-context bugs in r8a66597_queue()
usb/phy: fix PPC64 build errors in phy-fsl-usb.c
tools: usb: ffs-test: Fix build on big endian systems
usb: gadget: f_uac2: fix endianness of 'struct cntrl_*_lay3'
tools/power turbostat: fix -S on UP systems
net: caif: Add a missing rcu_read_unlock() in caif_flow_cb
qed: Fix possible race for the link state value.
atl1c: reserve min skb headroom
net: prevent ISA drivers from building on PPC32
can: mpc5xxx_can: check of_iomap return before use
i2c: davinci: Avoid zero value of CLKH
media: staging: omap4iss: Include asm/cacheflush.h after generic includes
bnx2x: Fix invalid memory access in rss hash config path.
net: axienet: Fix double deregister of mdio
fscache: Allow cancelled operations to be enqueued
cachefiles: Fix refcounting bug in backing-file read monitoring
cachefiles: Wait rather than BUG'ing on "Unexpected object collision"
selftests/ftrace: Add snapshot and tracing_on test case
zswap: re-check zswap_is_full() after do zswap_shrink()
tools/power turbostat: Read extended processor family from CPUID
Revert "MIPS: BCM47XX: Enable 74K Core ExternalSync for PCIe erratum"
enic: handle mtu change for vf properly
arc: fix build errors in arc/include/asm/delay.h
arc: fix type warnings in arc/mm/cache.c
drivers: net: lmc: fix case value for target abort error
scsi: fcoe: drop frames in ELS LOGO error path
scsi: vmw_pvscsi: Return DID_RESET for status SAM_STAT_COMMAND_TERMINATED
mm/memory.c: check return value of ioremap_prot
cifs: add missing debug entries for kconfig options
cifs: check kmalloc before use
smb3: Do not send SMB3 SET_INFO if nothing changed
smb3: don't request leases in symlink creation and query
btrfs: don't leak ret from do_chunk_alloc
s390/kvm: fix deadlock when killed by oom
ext4: check for NUL characters in extended attribute's name
ext4: sysfs: print ext4_super_block fields as little-endian
ext4: reset error code in ext4_find_entry in fallback
arm64: mm: check for upper PAGE_SHIFT bits in pfn_valid()
KVM: arm/arm64: Skip updating PTE entry if no change
KVM: arm/arm64: Skip updating PMD entry if no change
x86/speculation/l1tf: Fix overflow in l1tf_pfn_limit() on 32bit
x86/speculation/l1tf: Fix off-by-one error when warning that system has too much RAM
x86/speculation/l1tf: Suggest what to do on systems with too much RAM
x86/process: Re-export start_thread()
fuse: Don't access pipe->buffers without pipe_lock()
fuse: fix double request_end()
fuse: fix unlocked access to processing queue
fuse: umount should wait for all requests
fuse: Fix oops at process_init_reply()
fuse: Add missed unlock_page() to fuse_readpages_fill()
udl-kms: change down_interruptible to down
udl-kms: handle allocation failure
udl-kms: fix crash due to uninitialized memory
ASoC: dpcm: don't merge format from invalid codec dai
ASoC: sirf: Fix potential NULL pointer dereference
pinctrl: freescale: off by one in imx1_pinconf_group_dbg_show()
x86/irqflags: Mark native_restore_fl extern inline
x86/spectre: Add missing family 6 check to microcode check
s390: fix br_r1_trampoline for machines without exrl
s390/qdio: reset old sbal_state flags
s390/pci: fix out of bounds access during irq setup
kprobes: Make list and blacklist root user read only
MIPS: Correct the 64-bit DSP accumulator register size
MIPS: lib: Provide MIPS64r6 __multi3() for GCC < 7
scsi: sysfs: Introduce sysfs_{un,}break_active_protection()
scsi: core: Avoid that SCSI device removal through sysfs triggers a deadlock
iscsi target: fix session creation failure handling
cdrom: Fix info leak/OOB read in cdrom_ioctl_drive_status
Linux 4.4.154
Change-Id: Ia008eef23c91fbd095f7b3343737cb2864875c52
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit f2a3ab36077222437b4826fc76111caa14562b7c upstream.
Since the blacklist and list files on debugfs indicates
a sensitive address information to reader, it should be
restricted to the root user.
Suggested-by: Thomas Richter <tmricht@linux.ibm.com>
Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Howells <dhowells@redhat.com>
Cc: David S . Miller <davem@davemloft.net>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Jon Medhurst <tixy@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tobin C . Harding <me@tobin.cc>
Cc: Will Deacon <will.deacon@arm.com>
Cc: acme@kernel.org
Cc: akpm@linux-foundation.org
Cc: brueckner@linux.vnet.ibm.com
Cc: linux-arch@vger.kernel.org
Cc: rostedt@goodmis.org
Cc: schwidefsky@de.ibm.com
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/lkml/152491890171.9916.5183693615601334087.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5ccba44ba118a5000cccc50076b0344632459779 upstream.
System will hang if user set sysctl_sched_time_avg to 0:
[root@XXX ~]# sysctl kernel.sched_time_avg_ms=0
Stack traceback for pid 0
0xffff883f6406c600 0 0 1 3 R 0xffff883f6406cf50 *swapper/3
ffff883f7ccc3ae8 0000000000000018 ffffffff810c4dd0 0000000000000000
0000000000017800 ffff883f7ccc3d78 0000000000000003 ffff883f7ccc3bf8
ffffffff810c4fc9 ffff883f7ccc3c08 00000000810c5043 ffff883f7ccc3c08
Call Trace:
<IRQ> [<ffffffff810c4dd0>] ? update_group_capacity+0x110/0x200
[<ffffffff810c4fc9>] ? update_sd_lb_stats+0x109/0x600
[<ffffffff810c5507>] ? find_busiest_group+0x47/0x530
[<ffffffff810c5b84>] ? load_balance+0x194/0x900
[<ffffffff810ad5ca>] ? update_rq_clock.part.83+0x1a/0xe0
[<ffffffff810c6d42>] ? rebalance_domains+0x152/0x290
[<ffffffff810c6f5c>] ? run_rebalance_domains+0xdc/0x1d0
[<ffffffff8108a75b>] ? __do_softirq+0xfb/0x320
[<ffffffff8108ac85>] ? irq_exit+0x125/0x130
[<ffffffff810b3a17>] ? scheduler_ipi+0x97/0x160
[<ffffffff81052709>] ? smp_reschedule_interrupt+0x29/0x30
[<ffffffff8173a1be>] ? reschedule_interrupt+0x6e/0x80
<EOI> [<ffffffff815bc83c>] ? cpuidle_enter_state+0xcc/0x230
[<ffffffff815bc80c>] ? cpuidle_enter_state+0x9c/0x230
[<ffffffff815bc9d7>] ? cpuidle_enter+0x17/0x20
[<ffffffff810cd6dc>] ? cpu_startup_entry+0x38c/0x420
[<ffffffff81053373>] ? start_secondary+0x173/0x1e0
Because divide-by-zero error happens in function:
update_group_capacity()
update_cpu_capacity()
scale_rt_capacity()
{
...
total = sched_avg_period() + delta;
used = div_u64(avg, total);
...
}
To fix this issue, check user input value of sysctl_sched_time_avg, keep
it unchanged when hitting invalid input, and set the minimum limit of
sysctl_sched_time_avg to 1 ms.
Reported-by: James Puthukattukaran <james.puthukattukaran@oracle.com>
Signed-off-by: Ethan Zhao <ethan.zhao@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: efault@gmx.de
Cc: ethan.kernel@gmail.com
Cc: keescook@chromium.org
Cc: mcgrof@kernel.org
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/1504504774-18253-1-git-send-email-ethan.zhao@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Steve Muckle <smuckle@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit 939c7a4f04fc ("tracing: Introduce saved_cmdlines_size file")
introduced ability to change saved cmdlines size. This resized saved
command lines but missed resizing tgid mapping as well.
Another issue is that when the resize happens, it removes saved command
lines and reallocates new memory for it. This introduced a race
condition when reading the global savecmd as this can be freed in the
middle of accessing it causing a use after free access. Fix this by
implementing locking.
Signed-off-by: Adrian Salido <salidoa@google.com>
Bug: 36007735
Change-Id: I334791ac35f8bcbd34362ed112aa624275a46947
(cherry picked from commit 7116d306da66de0de21e982024b4d3a3056f4461)
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The control cpu thread which initiates hotplug calls kthread_park()
for hotplug thread and sets KTHREAD_SHOULD_PARK. After this control
thread wakes up the hotplug thread. There is a chance that wakeup
code sees the hotplug thread (running on AP core) in INTERRUPTIBLE
state, but sets its state to RUNNING after hotplug thread has entered
kthread_parkme() and changed its state to TASK_PARKED. This can result
in panic later on in kthread_unpark(), as it sees KTHREAD_IS_PARKED
flag set but fails to rebind the kthread, due to it being not in
TASK_PARKED state. Fix this, by serializing wakeup state change,
against state change before parking the kthread.
Below is the possible race:
Control thread Hotplug Thread
kthread_park()
set KTHREAD_SHOULD_PARK
smpboot_thread_fn
set_current_state(TASK_INTERRUPTIBLE);
kthread_parkme
wake_up_process()
raw_spin_lock_irqsave(&p->pi_lock, flags);
if (!(p->state & state)) -> this will fail
goto out;
__kthread_parkme
__set_current_state(TASK_PARKED);
if (p->on_rq && ttwu_remote(p, wake_flags))
ttwu_remote()
p->state = TASK_RUNNING;
schedule();
So to avoid this race, take pi_lock to serial state changes.
Change-Id: Ie71645d37046f7ee74df880dbead29efbaad199a
Suggested-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Signed-off-by: Gaurav Kohli <gkohli@codeaurora.org>
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* refs/heads/tmp-5e24b4e
Linux 4.4.153
ovl: warn instead of error if d_type is not supported
ovl: Do d_type check only if work dir creation was successful
ovl: Ensure upper filesystem supports d_type
x86/mm: Fix use-after-free of ldt_struct
x86/mm/pat: Fix L1TF stable backport for CPA
ANDROID: x86_64_cuttlefish_defconfig: Enable lz4 compression for zram
UPSTREAM: drivers/block/zram/zram_drv.c: fix bug storing backing_dev
BACKPORT: zram: introduce zram memory tracking
BACKPORT: zram: record accessed second
BACKPORT: zram: mark incompressible page as ZRAM_HUGE
UPSTREAM: zram: correct flag name of ZRAM_ACCESS
UPSTREAM: zram: Delete gendisk before cleaning up the request queue
UPSTREAM: drivers/block/zram/zram_drv.c: make zram_page_end_io() static
BACKPORT: zram: set BDI_CAP_STABLE_WRITES once
UPSTREAM: zram: fix null dereference of handle
UPSTREAM: zram: add config and doc file for writeback feature
BACKPORT: zram: read page from backing device
BACKPORT: zram: write incompressible pages to backing device
BACKPORT: zram: identify asynchronous IO's return value
BACKPORT: zram: add free space management in backing device
UPSTREAM: zram: add interface to specif backing device
UPSTREAM: zram: rename zram_decompress_page to __zram_bvec_read
UPSTREAM: zram: inline zram_compress
UPSTREAM: zram: clean up duplicated codes in __zram_bvec_write
Linux 4.4.152
reiserfs: fix broken xattr handling (heap corruption, bad retval)
i2c: imx: Fix race condition in dma read
PCI: pciehp: Fix use-after-free on unplug
PCI: Skip MPS logic for Virtual Functions (VFs)
PCI: hotplug: Don't leak pci_slot on registration failure
parisc: Remove unnecessary barriers from spinlock.h
bridge: Propagate vlan add failure to user
packet: refine ring v3 block size test to hold one frame
netfilter: conntrack: dccp: treat SYNC/SYNCACK as invalid if no prior state
xfrm_user: prevent leaking 2 bytes of kernel memory
parisc: Remove ordered stores from syscall.S
ext4: fix spectre gadget in ext4_mb_regular_allocator()
KVM: irqfd: fix race between EPOLLHUP and irq_bypass_register_consumer
staging: android: ion: check for kref overflow
tcp: identify cryptic messages as TCP seq # bugs
net: qca_spi: Fix log level if probe fails
net: qca_spi: Make sure the QCA7000 reset is triggered
net: qca_spi: Avoid packet drop during initial sync
net: usb: rtl8150: demote allmulti message to dev_dbg()
net/ethernet/freescale/fman: fix cross-build error
drm/nouveau/gem: off by one bugs in nouveau_gem_pushbuf_reloc_apply()
tcp: remove DELAYED ACK events in DCTCP
qlogic: check kstrtoul() for errors
packet: reset network header if packet shorter than ll reserved space
ixgbe: Be more careful when modifying MAC filters
ARM: dts: am3517.dtsi: Disable reference to OMAP3 OTG controller
ARM: 8780/1: ftrace: Only set kernel memory back to read-only after boot
perf llvm-utils: Remove bashism from kernel include fetch script
bnxt_en: Fix for system hang if request_irq fails
drm/armada: fix colorkey mode property
ieee802154: fakelb: switch from BUG_ON() to WARN_ON() on problem
ieee802154: at86rf230: use __func__ macro for debug messages
ieee802154: at86rf230: switch from BUG_ON() to WARN_ON() on problem
ARM: pxa: irq: fix handling of ICMR registers in suspend/resume
netfilter: x_tables: set module owner for icmp(6) matches
smsc75xx: Add workaround for gigabit link up hardware errata.
kasan: fix shadow_size calculation error in kasan_module_alloc
tracing: Use __printf markup to silence compiler
ARM: imx_v4_v5_defconfig: Select ULPI support
ARM: imx_v6_v7_defconfig: Select ULPI support
HID: wacom: Correct touch maximum XY of 2nd-gen Intuos
m68k: fix "bad page state" oops on ColdFire boot
bnx2x: Fix receiving tx-timeout in error or recovery state.
drm/exynos: decon5433: Fix WINCONx reset value
drm/exynos: decon5433: Fix per-plane global alpha for XRGB modes
drm/exynos: gsc: Fix support for NV16/61, YUV420/YVU420 and YUV422 modes
md/raid10: fix that replacement cannot complete recovery after reassemble
dmaengine: k3dma: Off by one in k3_of_dma_simple_xlate()
ARM: dts: da850: Fix interrups property for gpio
selftests/x86/sigreturn/64: Fix spurious failures on AMD CPUs
perf report powerpc: Fix crash if callchain is empty
perf test session topology: Fix test on s390
usb: xhci: increase CRS timeout value
ARM: dts: am437x: make edt-ft5x06 a wakeup source
brcmfmac: stop watchdog before detach and free everything
cxgb4: when disabling dcb set txq dcb priority to 0
Smack: Mark inode instant in smack_task_to_inode
ipv6: mcast: fix unsolicited report interval after receiving querys
locking/lockdep: Do not record IRQ state within lockdep code
net: davinci_emac: match the mdio device against its compatible if possible
ARC: Enable machine_desc->init_per_cpu for !CONFIG_SMP
net: propagate dev_get_valid_name return code
net: hamradio: use eth_broadcast_addr
enic: initialize enic->rfs_h.lock in enic_probe
qed: Add sanity check for SIMD fastpath handler.
arm64: make secondary_start_kernel() notrace
scsi: xen-scsifront: add error handling for xenbus_printf
usb: gadget: dwc2: fix memory leak in gadget_init()
usb: gadget: composite: fix delayed_status race condition when set_interface
usb: dwc2: fix isoc split in transfer with no data
ARM: dts: Cygnus: Fix I2C controller interrupt type
selftests: sync: add config fragment for testing sync framework
selftests: zram: return Kselftest Skip code for skipped tests
selftests: user: return Kselftest Skip code for skipped tests
selftests: static_keys: return Kselftest Skip code for skipped tests
selftests: pstore: return Kselftest Skip code for skipped tests
netfilter: ipv6: nf_defrag: reduce struct net memory waste
ARC: Explicitly add -mmedium-calls to CFLAGS
ANDROID: x86_64_cuttlefish_defconfig: Enable zram and zstd
BACKPORT: crypto: zstd - Add zstd support
UPSTREAM: zram: add zstd to the supported algorithms list
UPSTREAM: lib: Add zstd modules
UPSTREAM: lib: Add xxhash module
UPSTREAM: zram: rework copy of compressor name in comp_algorithm_store()
UPSTREAM: zram: constify attribute_group structures.
UPSTREAM: zram: count same page write as page_stored
UPSTREAM: zram: reduce load operation in page_same_filled
UPSTREAM: zram: use zram_free_page instead of open-coded
UPSTREAM: zram: introduce zram data accessor
UPSTREAM: zram: remove zram_meta structure
UPSTREAM: zram: use zram_slot_lock instead of raw bit_spin_lock op
BACKPORT: zram: partial IO refactoring
BACKPORT: zram: handle multiple pages attached bio's bvec
UPSTREAM: zram: fix operator precedence to get offset
BACKPORT: zram: extend zero pages to same element pages
BACKPORT: zram: remove waitqueue for IO done
UPSTREAM: zram: remove obsolete sysfs attrs
UPSTREAM: zram: support BDI_CAP_STABLE_WRITES
UPSTREAM: zram: revalidate disk under init_lock
BACKPORT: mm: support anonymous stable page
UPSTREAM: zram: use __GFP_MOVABLE for memory allocation
UPSTREAM: zram: drop gfp_t from zcomp_strm_alloc()
UPSTREAM: zram: add more compression algorithms
UPSTREAM: zram: delete custom lzo/lz4
UPSTREAM: zram: cosmetic: cleanup documentation
UPSTREAM: zram: use crypto api to check alg availability
BACKPORT: zram: switch to crypto compress API
UPSTREAM: zram: rename zstrm find-release functions
UPSTREAM: zram: introduce per-device debug_stat sysfs node
UPSTREAM: zram: remove max_comp_streams internals
UPSTREAM: zram: user per-cpu compression streams
BACKPORT: zsmalloc: require GFP in zs_malloc()
UPSTREAM: zram/zcomp: do not zero out zcomp private pages
UPSTREAM: zram: pass gfp from zcomp frontend to backend
UPSTREAM: socket: close race condition between sock_close() and sockfs_setattr()
ANDROID: Refresh x86_64_cuttlefish_defconfig
Linux 4.4.151
isdn: Disable IIOCDBGVAR
Bluetooth: avoid killing an already killed socket
x86/mm: Simplify p[g4um]d_page() macros
serial: 8250_dw: always set baud rate in dw8250_set_termios
ACPI / PM: save NVS memory for ASUS 1025C laptop
ACPI: save NVS memory for Lenovo G50-45
USB: option: add support for DW5821e
USB: serial: sierra: fix potential deadlock at close
ALSA: vxpocket: Fix invalid endian conversions
ALSA: memalloc: Don't exceed over the requested size
ALSA: hda: Correct Asrock B85M-ITX power_save blacklist entry
ALSA: cs5535audio: Fix invalid endian conversion
ALSA: virmidi: Fix too long output trigger loop
ALSA: vx222: Fix invalid endian conversions
ALSA: hda - Turn CX8200 into D3 as well upon reboot
ALSA: hda - Sleep for 10ms after entering D3 on Conexant codecs
net_sched: fix NULL pointer dereference when delete tcindex filter
vsock: split dwork to avoid reinitializations
net_sched: Fix missing res info when create new tc_index filter
llc: use refcount_inc_not_zero() for llc_sap_find()
l2tp: use sk_dst_check() to avoid race on sk->sk_dst_cache
dccp: fix undefined behavior with 'cwnd' shift in ccid2_cwnd_restart()
Conflicts:
drivers/block/zram/zram_drv.c
drivers/staging/android/ion/ion.c
include/linux/swap.h
mm/zsmalloc.c
Change-Id: I1c437ac5133503a939d06d51ec778b65371df6d1
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.152
ARC: Explicitly add -mmedium-calls to CFLAGS
netfilter: ipv6: nf_defrag: reduce struct net memory waste
selftests: pstore: return Kselftest Skip code for skipped tests
selftests: static_keys: return Kselftest Skip code for skipped tests
selftests: user: return Kselftest Skip code for skipped tests
selftests: zram: return Kselftest Skip code for skipped tests
selftests: sync: add config fragment for testing sync framework
ARM: dts: Cygnus: Fix I2C controller interrupt type
usb: dwc2: fix isoc split in transfer with no data
usb: gadget: composite: fix delayed_status race condition when set_interface
usb: gadget: dwc2: fix memory leak in gadget_init()
scsi: xen-scsifront: add error handling for xenbus_printf
arm64: make secondary_start_kernel() notrace
qed: Add sanity check for SIMD fastpath handler.
enic: initialize enic->rfs_h.lock in enic_probe
net: hamradio: use eth_broadcast_addr
net: propagate dev_get_valid_name return code
ARC: Enable machine_desc->init_per_cpu for !CONFIG_SMP
net: davinci_emac: match the mdio device against its compatible if possible
locking/lockdep: Do not record IRQ state within lockdep code
ipv6: mcast: fix unsolicited report interval after receiving querys
Smack: Mark inode instant in smack_task_to_inode
cxgb4: when disabling dcb set txq dcb priority to 0
brcmfmac: stop watchdog before detach and free everything
ARM: dts: am437x: make edt-ft5x06 a wakeup source
usb: xhci: increase CRS timeout value
perf test session topology: Fix test on s390
perf report powerpc: Fix crash if callchain is empty
selftests/x86/sigreturn/64: Fix spurious failures on AMD CPUs
ARM: dts: da850: Fix interrups property for gpio
dmaengine: k3dma: Off by one in k3_of_dma_simple_xlate()
md/raid10: fix that replacement cannot complete recovery after reassemble
drm/exynos: gsc: Fix support for NV16/61, YUV420/YVU420 and YUV422 modes
drm/exynos: decon5433: Fix per-plane global alpha for XRGB modes
drm/exynos: decon5433: Fix WINCONx reset value
bnx2x: Fix receiving tx-timeout in error or recovery state.
m68k: fix "bad page state" oops on ColdFire boot
HID: wacom: Correct touch maximum XY of 2nd-gen Intuos
ARM: imx_v6_v7_defconfig: Select ULPI support
ARM: imx_v4_v5_defconfig: Select ULPI support
tracing: Use __printf markup to silence compiler
kasan: fix shadow_size calculation error in kasan_module_alloc
smsc75xx: Add workaround for gigabit link up hardware errata.
netfilter: x_tables: set module owner for icmp(6) matches
ARM: pxa: irq: fix handling of ICMR registers in suspend/resume
ieee802154: at86rf230: switch from BUG_ON() to WARN_ON() on problem
ieee802154: at86rf230: use __func__ macro for debug messages
ieee802154: fakelb: switch from BUG_ON() to WARN_ON() on problem
drm/armada: fix colorkey mode property
bnxt_en: Fix for system hang if request_irq fails
perf llvm-utils: Remove bashism from kernel include fetch script
ARM: 8780/1: ftrace: Only set kernel memory back to read-only after boot
ARM: dts: am3517.dtsi: Disable reference to OMAP3 OTG controller
ixgbe: Be more careful when modifying MAC filters
packet: reset network header if packet shorter than ll reserved space
qlogic: check kstrtoul() for errors
tcp: remove DELAYED ACK events in DCTCP
drm/nouveau/gem: off by one bugs in nouveau_gem_pushbuf_reloc_apply()
net/ethernet/freescale/fman: fix cross-build error
net: usb: rtl8150: demote allmulti message to dev_dbg()
net: qca_spi: Avoid packet drop during initial sync
net: qca_spi: Make sure the QCA7000 reset is triggered
net: qca_spi: Fix log level if probe fails
tcp: identify cryptic messages as TCP seq # bugs
staging: android: ion: check for kref overflow
KVM: irqfd: fix race between EPOLLHUP and irq_bypass_register_consumer
ext4: fix spectre gadget in ext4_mb_regular_allocator()
parisc: Remove ordered stores from syscall.S
xfrm_user: prevent leaking 2 bytes of kernel memory
netfilter: conntrack: dccp: treat SYNC/SYNCACK as invalid if no prior state
packet: refine ring v3 block size test to hold one frame
bridge: Propagate vlan add failure to user
parisc: Remove unnecessary barriers from spinlock.h
PCI: hotplug: Don't leak pci_slot on registration failure
PCI: Skip MPS logic for Virtual Functions (VFs)
PCI: pciehp: Fix use-after-free on unplug
i2c: imx: Fix race condition in dma read
reiserfs: fix broken xattr handling (heap corruption, bad retval)
Linux 4.4.152
Change-Id: I1058813031709d20abd0bc45e9ac5fc68ab3a1d7
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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[ Upstream commit 26b68dd2f48fe7699a89f0cfbb9f4a650dc1c837 ]
Silence warnings (triggered at W=1) by adding relevant __printf attributes.
CC kernel/trace/trace.o
kernel/trace/trace.c: In function ‘__trace_array_vprintk’:
kernel/trace/trace.c:2979:2: warning: function might be possible candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
len = vscnprintf(tbuffer, TRACE_BUF_SIZE, fmt, args);
^~~
AR kernel/trace/built-in.o
Link: http://lkml.kernel.org/r/20180308205843.27447-1-malat@debian.org
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit fcc784be837714a9173b372ff9fb9b514590dad9 ]
While debugging where things were going wrong with mapping
enabling/disabling interrupts with the lockdep state and actual real
enabling and disabling interrupts, I had to silent the IRQ
disabling/enabling in debug_check_no_locks_freed() because it was
always showing up as it was called before the splat was.
Use raw_local_irq_save/restore() for not only debug_check_no_locks_freed()
but for all internal lockdep functions, as they hide useful information
about where interrupts were used incorrectly last.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Link: https://lkml.kernel.org/lkml/20180404140630.3f4f4c7a@gandalf.local.home
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The thread which initiates the hot plug can get scheduled
out, while trying to acquire the console lock,
thus increasing the hot plug latency. This option
allows to selectively disable the console flush and
in turn reduce the hot plug latency.
Change-Id: I42507804d321b29b7761146a6c175d959bf79925
Signed-off-by: Mohammed Khajapasha <mkhaja@codeaurora.org>
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
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This reverts commit ba2d60830c95b4728b634940d24fccbbf56efb62.
Change-Id: Ib4909673a306eb1f2d7a70a07cd9dc5189e7c03e
Signed-off-by: xianzhu <xianzhu@codeaurora.org>
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* refs/heads/tmp-f057ff9
Linux 4.4.148
x86/speculation/l1tf: Unbreak !__HAVE_ARCH_PFN_MODIFY_ALLOWED architectures
x86/init: fix build with CONFIG_SWAP=n
x86/speculation/l1tf: Fix up CPU feature flags
x86/mm/kmmio: Make the tracer robust against L1TF
x86/mm/pat: Make set_memory_np() L1TF safe
x86/speculation/l1tf: Make pmd/pud_mknotpresent() invert
x86/speculation/l1tf: Invert all not present mappings
x86/speculation/l1tf: Fix up pte->pfn conversion for PAE
x86/speculation/l1tf: Protect PAE swap entries against L1TF
x86/cpufeatures: Add detection of L1D cache flush support.
x86/speculation/l1tf: Extend 64bit swap file size limit
x86/bugs: Move the l1tf function and define pr_fmt properly
x86/speculation/l1tf: Limit swap file size to MAX_PA/2
x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings
mm: fix cache mode tracking in vm_insert_mixed()
mm: Add vm_insert_pfn_prot()
x86/speculation/l1tf: Add sysfs reporting for l1tf
x86/speculation/l1tf: Make sure the first page is always reserved
x86/speculation/l1tf: Protect PROT_NONE PTEs against speculation
x86/speculation/l1tf: Protect swap entries against L1TF
x86/speculation/l1tf: Change order of offset/type in swap entry
mm: x86: move _PAGE_SWP_SOFT_DIRTY from bit 7 to bit 1
x86/mm: Fix swap entry comment and macro
x86/mm: Move swap offset/type up in PTE to work around erratum
x86/speculation/l1tf: Increase 32bit PAE __PHYSICAL_PAGE_SHIFT
x86/irqflags: Provide a declaration for native_save_fl
kprobes/x86: Fix %p uses in error messages
x86/speculation: Protect against userspace-userspace spectreRSB
x86/paravirt: Fix spectre-v2 mitigations for paravirt guests
ARM: dts: imx6sx: fix irq for pcie bridge
IB/ocrdma: fix out of bounds access to local buffer
IB/mlx4: Mark user MR as writable if actual virtual memory is writable
IB/core: Make testing MR flags for writability a static inline function
fix __legitimize_mnt()/mntput() race
fix mntput/mntput race
root dentries need RCU-delayed freeing
scsi: sr: Avoid that opening a CD-ROM hangs with runtime power management enabled
ACPI / LPSS: Add missing prv_offset setting for byt/cht PWM devices
xen/netfront: don't cache skb_shinfo()
parisc: Define mb() and add memory barriers to assembler unlock sequences
parisc: Enable CONFIG_MLONGCALLS by default
fork: unconditionally clear stack on fork
ipv4+ipv6: Make INET*_ESP select CRYPTO_ECHAINIV
tpm: fix race condition in tpm_common_write()
ext4: fix check to prevent initializing reserved inodes
Linux 4.4.147
jfs: Fix inconsistency between memory allocation and ea_buf->max_size
i2c: imx: Fix reinit_completion() use
ring_buffer: tracing: Inherit the tracing setting to next ring buffer
ACPI / PCI: Bail early in acpi_pci_add_bus() if there is no ACPI handle
ext4: fix false negatives *and* false positives in ext4_check_descriptors()
netlink: Don't shift on 64 for ngroups
netlink: Don't shift with UB on nlk->ngroups
netlink: Do not subscribe to non-existent groups
nohz: Fix local_timer_softirq_pending()
genirq: Make force irq threading setup more robust
scsi: qla2xxx: Return error when TMF returns
scsi: qla2xxx: Fix ISP recovery on unload
Conflicts:
include/linux/swapfile.h
Removed CONFIG_CRYPTO_ECHAINIV from defconfig files since this upmerge is
adding this config to Kconfig file.
Change-Id: Ide96c29f919d76590c2bdccf356d1d464a892fd7
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.147
scsi: qla2xxx: Fix ISP recovery on unload
scsi: qla2xxx: Return error when TMF returns
genirq: Make force irq threading setup more robust
nohz: Fix local_timer_softirq_pending()
netlink: Do not subscribe to non-existent groups
netlink: Don't shift with UB on nlk->ngroups
netlink: Don't shift on 64 for ngroups
ext4: fix false negatives *and* false positives in ext4_check_descriptors()
ACPI / PCI: Bail early in acpi_pci_add_bus() if there is no ACPI handle
ring_buffer: tracing: Inherit the tracing setting to next ring buffer
i2c: imx: Fix reinit_completion() use
jfs: Fix inconsistency between memory allocation and ea_buf->max_size
Linux 4.4.147
Change-Id: I067f9844278976dddef8063961a70e189c423de3
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit 73c8d8945505acdcbae137c2e00a1232e0be709f upstream.
Maintain the tracing on/off setting of the ring_buffer when switching
to the trace buffer snapshot.
Taking a snapshot is done by swapping the backup ring buffer
(max_tr_buffer). But since the tracing on/off setting is defined
by the ring buffer, when swapping it, the tracing on/off setting
can also be changed. This causes a strange result like below:
/sys/kernel/debug/tracing # cat tracing_on
1
/sys/kernel/debug/tracing # echo 0 > tracing_on
/sys/kernel/debug/tracing # cat tracing_on
0
/sys/kernel/debug/tracing # echo 1 > snapshot
/sys/kernel/debug/tracing # cat tracing_on
1
/sys/kernel/debug/tracing # echo 1 > snapshot
/sys/kernel/debug/tracing # cat tracing_on
0
We don't touch tracing_on, but snapshot changes tracing_on
setting each time. This is an anomaly, because user doesn't know
that each "ring_buffer" stores its own tracing-enable state and
the snapshot is done by swapping ring buffers.
Link: http://lkml.kernel.org/r/153149929558.11274.11730609978254724394.stgit@devbox
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Tom Zanussi <tom.zanussi@linux.intel.com>
Cc: Hiraku Toyooka <hiraku.toyooka@cybertrust.co.jp>
Cc: stable@vger.kernel.org
Fixes: debdd57f5145 ("tracing: Make a snapshot feature available from userspace")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
[ Updated commit log and comment in the code ]
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 80d20d35af1edd632a5e7a3b9c0ab7ceff92769e upstream.
local_timer_softirq_pending() checks whether the timer softirq is
pending with: local_softirq_pending() & TIMER_SOFTIRQ.
This is wrong because TIMER_SOFTIRQ is the softirq number and not a
bitmask. So the test checks for the wrong bit.
Use BIT(TIMER_SOFTIRQ) instead.
Fixes: 5d62c183f9e9 ("nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick()")
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Cc: bigeasy@linutronix.de
Cc: peterz@infradead.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180731161358.29472-1-anna-maria@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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