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Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 

Pull timer fix from Thomas Gleixner:
 "Prevent NULL pointer dereferencing in the tick broadcast code. Old
  bug, which got unearthed by the hotplug ordering problem"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tick/broadcast: Prevent NULL pointer dereference
This commit is contained in:
Linus Torvalds 2016-12-18 11:11:01 -08:00
parent 98da295b35 c1a9eeb938
commit 451bb1a6b2
1 changed files with 3 additions and 0 deletions
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3
kernel/time/tick-broadcast.c
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@ -871,6 +871,9 @@ void tick_broadcast_setup_oneshot(struct clock_event_device *bc)
{
int cpu = smp_processor_id();
if (!bc)
return;
/* Set it up only once ! */
if (bc->event_handler != tick_handle_oneshot_broadcast) {
int was_periodic = clockevent_state_periodic(bc);