Re: [syzbot] [sound?] possible deadlock in _snd_pcm_stream_lock_irqsave (4)
From: Edward Adam Davis
Date: Wed Mar 20 2024 - 20:41:45 EST
please test dl in _snd_pcm_stream_lock_irqsave
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
diff --git a/sound/core/timer.c b/sound/core/timer.c
index 15b07d09c4b7..c501faa30040 100644
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -409,7 +409,7 @@ static void snd_timer_close_locked(struct snd_timer_instance *timeri,
struct snd_timer *timer = timeri->timer;
if (timer) {
- guard(spinlock)(&timer->lock);
+ guard(spinlock_irqsave)(&timer->lock);
timeri->flags |= SNDRV_TIMER_IFLG_DEAD;
}