Oleg Nesterov 91530f675e fix race between exit_itimers() and /proc/pid/timers ...

commit d5b36a4dbd06c5e8e36ca8ccc552f679069e2946 upstream.

As Chris explains, the comment above exit_itimers() is not correct,
we can race with proc_timers_seq_ops. Change exit_itimers() to clear
signal->posix_timers with ->siglock held.

Cc: <stable@vger.kernel.org>
Reported-by: chris@accessvector.net
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-07-21 21:19:59 +02:00

..

alarmtimer.c

kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data()

2021-03-25 09:04:16 +01:00

clockevents.c

tick: Remove outgoing CPU from broadcast masks

2019-03-23 18:26:43 +01:00

clocksource.c

clocksource: Avoid accidental unstable marking of clocksources

2022-01-27 10:54:06 +01:00

hrtimer.c

hrtimer: Ensure timerfd notification for HIGHRES=n

2021-09-15 09:50:25 +02:00

itimer.c

time: Prevent undefined behaviour in timespec64_to_ns()

2020-10-26 11:48:11 +01:00

jiffies.c

clocksource: Reduce clocksource-skew threshold

2022-01-27 10:54:05 +01:00

Kconfig

posix-cpu-timers: Provide mechanisms to defer timer handling to task_work

2020-08-06 16:50:59 +02:00

Makefile

ns: Introduce Time Namespace

2020-01-14 12:20:48 +01:00

namespace.c

nsproxy: support CLONE_NEWTIME with setns()

2020-07-08 11:14:22 +02:00

ntp_internal.h

ntp: Audit NTP parameters adjustment

2019-04-15 18:14:01 -04:00

ntp.c

ntp/y2038: Remove incorrect time_t truncation

2019-11-12 08:13:44 +01:00

posix-clock.c

posix-clocks: Rename the clock_get() callback to clock_get_timespec()

2020-01-14 12:20:49 +01:00

posix-cpu-timers.c

posix-cpu-timers: Clear task::posix_cputimers_work in copy_process()

2021-11-18 14:04:29 +01:00

posix-stubs.c

posix-timers: Make clock_nanosleep() time namespace aware

2020-01-14 12:20:55 +01:00

posix-timers.c

fix race between exit_itimers() and /proc/pid/timers

2022-07-21 21:19:59 +02:00

posix-timers.h

posix-clocks: Introduce clock_get_ktime() callback

2020-01-14 12:20:51 +01:00

sched_clock.c

time/sched_clock: Mark sched_clock_read_begin/retry() as notrace

2020-10-26 11:34:31 +01:00

test_udelay.c

time/debug: Remove license boilerplate

2018-11-23 11:51:21 +01:00

tick-broadcast-hrtimer.c

tick: broadcast-hrtimer: Fix a race in bc_set_next

2019-09-27 14:45:55 +02:00

tick-broadcast.c

treewide: Use fallthrough pseudo-keyword

2020-08-23 17:36:59 -05:00

tick-common.c

timekeeping: Split jiffies seqlock

2020-03-21 16:00:23 +01:00

tick-internal.h

hrtimer: Ensure timerfd notification for HIGHRES=n

2021-09-15 09:50:25 +02:00

tick-oneshot.c

hrtimers/tick/clockevents: Remove sloppy license references

2018-11-23 11:51:21 +01:00

tick-sched.c

tick/nohz: unexport __init-annotated tick_nohz_full_setup()

2022-07-02 16:39:23 +02:00

tick-sched.h

tick/sched: Update tick_sched struct documentation

2019-03-24 20:29:32 +01:00

time.c

y2038: remove unused time32 interfaces

2020-02-21 11:22:15 -08:00

timeconst.bc

…

timeconv.c

…

timecounter.c

time: Remove license boilerplate

2018-11-23 11:51:21 +01:00

timekeeping_debug.c

timekeeping/debug: No need to check return value of debugfs_create functions

2019-01-29 20:08:41 +01:00

timekeeping_internal.h

timekeeping/vsyscall: Provide vdso_update_begin/end()

2020-08-06 10:57:30 +02:00

timekeeping.c

timekeeping: Add raw clock fallback for random_get_entropy()

2022-05-30 09:33:41 +02:00

timekeeping.h

timekeeping: Split jiffies seqlock

2020-03-21 16:00:23 +01:00

timer_list.c

timer_list: Guard procfs specific code

2019-06-23 00:08:52 +02:00

timer.c

timers: Fix warning condition in __run_timers()

2022-04-20 09:23:30 +02:00

vsyscall.c

timekeeping/vsyscall: Provide vdso_update_begin/end()

2020-08-06 10:57:30 +02:00