linux-kernel - Re: [syzbot] [usb?] [block?] possible deadlock in blk_mq_alloc

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Message-ID: <676aaeeb.050a0220.2f3838.01aa.GAE@google.com>
Date: Tue, 24 Dec 2024 04:54:03 -0800
From: syzbot <syzbot+ca7d7c797fee31d2b474@...kaller.appspotmail.com>
To: axboe@...nel.dk, hch@....de, linux-block@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org, ming.lei@...hat.com, 
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [usb?] [block?] possible deadlock in blk_mq_alloc_request

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=15fd34c4580000
start commit:   c88416ba074a Add linux-next specific files for 20241101
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=17fd34c4580000
console output: https://syzkaller.appspot.com/x/log.txt?x=13fd34c4580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=704b6be2ac2f205f
dashboard link: https://syzkaller.appspot.com/bug?extid=ca7d7c797fee31d2b474
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1250b630580000

Reported-by: syzbot+ca7d7c797fee31d2b474@...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