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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2016-07-08 01:39:11 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-07-11 17:20:12 +0200 |
| commit | 2c13ce8f6b2f6fd9ba2f9261b1939fc0f62d1307 (patch) | |
| tree | 66ac203de7a517209a0aaef052bfae57710d7de2 /kernel/time | |
| parent | 92d21ac74a9e3c09b0b01c764e530657e4c85c49 (diff) | |
| download | linux-stable-2c13ce8f6b2f6fd9ba2f9261b1939fc0f62d1307.tar.gz linux-stable-2c13ce8f6b2f6fd9ba2f9261b1939fc0f62d1307.tar.bz2 linux-stable-2c13ce8f6b2f6fd9ba2f9261b1939fc0f62d1307.zip | |
posix_cpu_timer: Exit early when process has been reaped
Variable "now" seems to be genuinely used unintialized
if branch
if (CPUCLOCK_PERTHREAD(timer->it_clock)) {
is not taken and branch
if (unlikely(sighand == NULL)) {
is taken. In this case the process has been reaped and the timer is marked as
disarmed anyway. So none of the postprocessing of the sample is
required. Return right away.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20160707223911.GA26483@p183.telecom.by
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/posix-cpu-timers.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c index 1cafba860b08..39008d78927a 100644 --- a/kernel/time/posix-cpu-timers.c +++ b/kernel/time/posix-cpu-timers.c @@ -777,6 +777,7 @@ static void posix_cpu_timer_get(struct k_itimer *timer, struct itimerspec *itp) timer->it.cpu.expires = 0; sample_to_timespec(timer->it_clock, timer->it.cpu.expires, &itp->it_value); + return; } else { cpu_timer_sample_group(timer->it_clock, p, &now); unlock_task_sighand(p, &flags); |