On Tue, Oct 15, 2013 at 10:41 AM, Janne Karhunen <janne.karhu...@gmail.com> wrote:
>> call_timer_fn 0x73/0x160 <--- EIP hits 0 > > Use after free.. with CONFIG_DEBUG_PAGEALLOC && > CONFIG_DEBUG_OBJECTS_TIMERS we get : > > call_timer_fn 0x73/0x160 > destroy_timer_on_stack 0x20/0x20 > ftrace_raw_event_hrtimer_expire_entry 0x3b/0xc0 > run_timer_softirq 0x1f2/0x230 Sadly no time to hunt the free at the moment, so working around temporarily by diff --git a/kernel/timer.c b/kernel/timer.c index 4296d13..fc7ef44 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -1094,6 +1094,9 @@ static void call_timer_fn(struct timer_list *timer, void (*fn)(unsigned long), { int preempt_count = preempt_count(); + if (fn == NULL) + return; + Hoping someone wiser catches the real fix at some point. -- Janne -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/