linux-kernel - Re: [syzbot] [sound?] possible deadlock in __snd_pcm_lib

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Message-ID: <68b2406a.a00a0220.1337b0.001e.GAE@google.com>
Date: Fri, 29 Aug 2025 17:06:02 -0700
From: syzbot <syzbot+10b4363fb0f46527f3f3@...kaller.appspotmail.com>
To: bigeasy@...utronix.de, bp@...en8.de, dave.hansen@...ux.intel.com, 
	hpa@...or.com, linux-kernel@...r.kernel.org, linux-sound@...r.kernel.org, 
	mingo@...hat.com, perex@...ex.cz, syzkaller-bugs@...glegroups.com, 
	tglx@...utronix.de, tiwai@...e.com, x86@...nel.org
Subject: Re: [syzbot] [sound?] possible deadlock in __snd_pcm_lib_xfer (2)

syzbot has bisected this issue to:

commit d2d6422f8bd17c6bb205133e290625a564194496
Author: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Date:   Fri Sep 6 10:59:04 2024 +0000

    x86: Allow to enable PREEMPT_RT.

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12db5634580000
start commit:   07d9df80082b Merge tag 'perf-tools-fixes-for-v6.17-2025-08..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=11db5634580000
console output: https://syzkaller.appspot.com/x/log.txt?x=16db5634580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e1e1566c7726877e
dashboard link: https://syzkaller.appspot.com/bug?extid=10b4363fb0f46527f3f3
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10307262580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17110242580000

Reported-by: syzbot+10b4363fb0f46527f3f3@...kaller.appspotmail.com
Fixes: d2d6422f8bd1 ("x86: Allow to enable PREEMPT_RT.")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection