On Sat, 29 Oct 2022 15:56:25 -0700
Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
> >> WARNING: CPU: 0 PID: 9 at lib/debugobjects.c:502 debug_print_object+0xd0/0x100
> >> ODEBUG: free active (active state 0) object type: timer_list hint: neigh_timer_handler+0x0/0x480
> >>
> >> That happens with almost every test, so I may have missed some others
> >> in the noise.
> >
> > Can you add this?
> >
>
> It doesn't make a difference.
Ah, it also requires this (I have other debugging in that file, so it may
only apply with some fuzzing):
-- Steve
diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index ac2e8beb4235..f2ccf24a8448 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1282,6 +1296,11 @@ int __del_timer(struct timer_list *timer, bool free)
debug_timer_deactivate(timer, true);
}
raw_spin_unlock_irqrestore(&base->lock, flags);
+ } else if (free) {
+ base = lock_timer_base(timer, &flags);
+ timer->function = NULL;
+ debug_timer_deactivate(timer, true);
+ raw_spin_unlock_irqrestore(&base->lock, flags);
}
return ret;
