diff options
Diffstat (limited to 'kernel/time/posix-cpu-timers.c')
| -rw-r--r-- | kernel/time/posix-cpu-timers.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c index 50e8d04ab661..0de2bb7cbec0 100644 --- a/kernel/time/posix-cpu-timers.c +++ b/kernel/time/posix-cpu-timers.c @@ -1406,6 +1406,15 @@ void run_posix_cpu_timers(void) lockdep_assert_irqs_disabled(); /* + * Ensure that release_task(tsk) can't happen while + * handle_posix_cpu_timers() is running. Otherwise, a concurrent + * posix_cpu_timer_del() may fail to lock_task_sighand(tsk) and + * miss timer->it.cpu.firing != 0. + */ + if (tsk->exit_state) + return; + + /* * If the actual expiry is deferred to task work context and the * work is already scheduled there is no point to do anything here. */ @@ -1548,7 +1557,7 @@ static int do_cpu_nanosleep(const clockid_t which_clock, int flags, * Report back to the user the time still remaining. */ restart = ¤t->restart_block; - restart->nanosleep.expires = expires; + restart->nanosleep.expires = ns_to_ktime(expires); if (restart->nanosleep.type != TT_NONE) error = nanosleep_copyout(restart, &it.it_value); } @@ -1590,7 +1599,7 @@ static long posix_cpu_nsleep_restart(struct restart_block *restart_block) clockid_t which_clock = restart_block->nanosleep.clockid; struct timespec64 t; - t = ns_to_timespec64(restart_block->nanosleep.expires); + t = ktime_to_timespec64(restart_block->nanosleep.expires); return do_cpu_nanosleep(which_clock, TIMER_ABSTIME, &t); } |