linux-kernel - Re: [syzbot] [sound?] inconsistent lock state in snd_hrtimer

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Date: Sun, 14 Apr 2024 17:45:22 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+8933e1c7c07fe8f2dcd3@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [sound?] inconsistent lock state in snd_hrtimer_callback (2)

please test dl in snd_hrtimer_callback

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git fe46a7dd189e

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;
 	}