linux-kernel - Re: [syzbot] [block?] [trace?] possible deadlock in blk_trace

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Message-ID: <678ee8aa.050a0220.15cac.0002.GAE@google.com>
Date: Mon, 20 Jan 2025 16:22:02 -0800
From: syzbot <syzbot+0d8542c90a512dc95185@...kaller.appspotmail.com>
To: axboe@...nel.dk, hch@....de, linux-block@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org, 
	mathieu.desnoyers@...icios.com, mhiramat@...nel.org, ming.lei@...hat.com, 
	rostedt@...dmis.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [block?] [trace?] possible deadlock in blk_trace_setup

syzbot has bisected this issue to:

commit f1be1788a32e8fa63416ad4518bbd1a85a825c9d
Author: Ming Lei <ming.lei@...hat.com>
Date:   Fri Oct 25 00:37:20 2024 +0000

    block: model freeze & enter queue as lock for supporting lockdep

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1536b9df980000
start commit:   5b913f5d7d7f Add linux-next specific files for 20241106
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1736b9df980000
console output: https://syzkaller.appspot.com/x/log.txt?x=1336b9df980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=27aeebbe9ce2cea
dashboard link: https://syzkaller.appspot.com/bug?extid=0d8542c90a512dc95185
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=167b3d5f980000

Reported-by: syzbot+0d8542c90a512dc95185@...kaller.appspotmail.com
Fixes: f1be1788a32e ("block: model freeze & enter queue as lock for supporting lockdep")

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