Sebastian Andrzej Siewior 73d20564e0 hrtimer: Don't dereference the hrtimer pointer after the callback ...

A hrtimer can be released in its callback, but lockdep_hrtimer_exit()
dereferences the pointer after the callback returns, i.e. a potential use
after free.

Retrieve the context in which the hrtimer expires before the callback is
invoked and use it in lockdep_hrtimer_exit().

Fixes: 40db173965 ("lockdep: Add hrtimer context tracing bits")
Reported-by: syzbot+62c155c276e580cfb606@syzkaller.appspotmail.com
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200331201849.fkp2siy3vcdqvqlz@linutronix.de

2020-04-01 13:20:14 +02:00

..

alarmtimer.c

alarmtimer: Make alarmtimer_get_rtcdev() a stub when CONFIG_RTC_CLASS=n

2020-01-24 21:03:53 +01:00

clockevents.c

…

clocksource.c

clocksource: Add common vdso clock mode storage

2020-02-17 14:40:23 +01:00

hrtimer.c

hrtimer: Don't dereference the hrtimer pointer after the callback

2020-04-01 13:20:14 +02:00

itimer.c

y2038: rename itimerval to __kernel_old_itimerval

2019-12-18 18:07:33 +01:00

jiffies.c

timekeeping: Split jiffies seqlock

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

Kconfig

…

Makefile

ns: Introduce Time Namespace

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

namespace.c

lib/vdso: Move VCLOCK_TIMENS to vdso_clock_modes

2020-02-17 20:12:17 +01:00

ntp_internal.h

…

ntp.c

…

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

Merge tag 'timers-core-2020-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2020-03-30 18:51:47 -07:00

posix-stubs.c

posix-timers: Make clock_nanosleep() time namespace aware

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

posix-timers.c

posix-timers: Pass lockdep expression to RCU lists

2020-02-17 20:12:19 +01:00

posix-timers.h

posix-clocks: Introduce clock_get_ktime() callback

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

sched_clock.c

time/sched_clock: Expire timer in hardirq context

2020-03-19 09:45:08 +01:00

test_udelay.c

…

tick-broadcast-hrtimer.c

…

tick-broadcast.c

…

tick-common.c

timekeeping: Split jiffies seqlock

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

tick-internal.h

…

tick-oneshot.c

…

tick-sched.c

lockdep: Annotate irq_work

2020-03-21 16:00:24 +01:00

tick-sched.h

…

time.c

y2038: remove unused time32 interfaces

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

timeconst.bc

…

timeconv.c

…

timecounter.c

…

timekeeping_debug.c

…

timekeeping_internal.h

…

timekeeping.c

Merge tag 'timers-core-2020-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2020-03-30 18:51:47 -07:00

timekeeping.h

timekeeping: Split jiffies seqlock

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

timer_list.c

…

timer.c

Merge tag 'timers-core-2020-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2020-03-30 18:51:47 -07:00

vsyscall.c

lib/vdso: Avoid highres update if clocksource is not VDSO capable

2020-02-17 20:12:17 +01:00