linux-kernel - Re: [syzbot] [block] INFO: task hung in clean_bdev

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Message-ID: <0000000000001486250605ad5abc@google.com>
Date:   Mon, 18 Sep 2023 19:52:38 -0700
From:   syzbot <syzbot+1fa947e7f09e136925b8@...kaller.appspotmail.com>
To:     axboe@...nel.dk, brauner@...nel.org, david@...morbit.com,
        djwong@...nel.org, hare@...e.de, hch@....de,
        johannes.thumshirn@....com, linux-block@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-xfs@...r.kernel.org, mcgrof@...nel.org, nogikh@...gle.com,
        p.raghav@...sung.com, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [block] INFO: task hung in clean_bdev_aliases

syzbot has bisected this issue to:

commit 487c607df790d366e67a7d6a30adf785cdd98e55
Author: Christoph Hellwig <hch@....de>
Date:   Tue Aug 1 17:22:00 2023 +0000

    block: use iomap for writes to block devices

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1086cb74680000
start commit:   f0b0d403eabb Merge tag 'kbuild-fixes-v6.6' of git://git.ke..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1286cb74680000
console output: https://syzkaller.appspot.com/x/log.txt?x=1486cb74680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=999148c170811772
dashboard link: https://syzkaller.appspot.com/bug?extid=1fa947e7f09e136925b8
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16148d74680000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13e10762680000

Reported-by: syzbot+1fa947e7f09e136925b8@...kaller.appspotmail.com
Fixes: 487c607df790 ("block: use iomap for writes to block devices")

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