Messages in this thread Patch in this message | | | From | Hillf Danton <> | Subject | Re: [syzbot] [sound?] possible deadlock in _snd_pcm_stream_lock_irqsave (5) | Date | Sun, 14 Apr 2024 16:13:17 +0800 |
| |
On Sat, 13 Apr 2024 21:05:20 -0700 > syzbot found the following issue on: > > HEAD commit: fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel.. > git tree: upstream > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10431e13180000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git fe46a7dd189e
--- x/sound/core/timer.c +++ y/sound/core/timer.c @@ -409,8 +409,9 @@ static void snd_timer_close_locked(struc struct snd_timer *timer = timeri->timer; if (timer) { - guard(spinlock)(&timer->lock); + spin_lock_irq(&timer->lock); timeri->flags |= SNDRV_TIMER_IFLG_DEAD; + spin_unlock_irq(&timer->lock); } if (!list_empty(&timeri->open_list)) { --
| |