linux-kernel - Re: [syzbot] [block?] WARNING in blkdev

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Date:   Sun, 18 Jun 2023 14:06:32 -0700
From:   syzbot <syzbot+04625c80899f4555de39@...kaller.appspotmail.com>
To:     axboe@...nel.dk, brauner@...nel.org, hare@...e.de, hch@....de,
        hdanton@...a.com, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [block?] WARNING in blkdev_put (3)

syzbot has bisected this issue to:

commit 2736e8eeb0ccdc71d1f4256c9c9a28f58cc43307
Author: Christoph Hellwig <hch@....de>
Date:   Thu Jun 8 11:02:43 2023 +0000

    block: use the holder as indication for exclusive opens

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1713d65b280000
start commit:   f7efed9f38f8 Add linux-next specific files for 20230616
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1493d65b280000
console output: https://syzkaller.appspot.com/x/log.txt?x=1093d65b280000
kernel config:  https://syzkaller.appspot.com/x/.config?x=60b1a32485a77c16
dashboard link: https://syzkaller.appspot.com/bug?extid=04625c80899f4555de39
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1600684b280000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16b484f3280000

Reported-by: syzbot+04625c80899f4555de39@...kaller.appspotmail.com
Fixes: 2736e8eeb0cc ("block: use the holder as indication for exclusive opens")

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