From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+faf0acea764965b3e59e@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com,
tiwai@suse.com
Subject: Re: [syzbot] [sound?] possible deadlock in _snd_pcm_stream_lock_irqsave (5)
Date: Sun, 14 Apr 2024 16:13:17 +0800 [thread overview]
Message-ID: <20240414081317.2137-1-hdanton@sina.com> (raw)
In-Reply-To: <0000000000000457ff0616069d07@google.com>
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)) {
--
next prev parent reply other threads:[~2024-04-14 8:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-14 4:05 syzbot
2024-04-14 8:13 ` Hillf Danton [this message]
2024-04-14 8:43 ` syzbot
2024-04-18 7:37 ` Takashi Iwai
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