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Message-ID: <000000000000761f5f0603324129@google.com>
Date:   Fri, 18 Aug 2023 06:10:41 -0700
From:   syzbot <syzbot+38d04642cea49f3a3d2e@...kaller.appspotmail.com>
To:     adilger.kernel@...ger.ca, linkinjeon@...nel.org,
        linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, quic_pkondeti@...cinc.com,
        rafael.j.wysocki@...el.com, sj1557.seo@...sung.com,
        syzkaller-bugs@...glegroups.com, tytso@....edu,
        wendy.wang@...el.com, yu.c.chen@...el.com
Subject: Re: [syzbot] [ext4?] INFO: task hung in __writeback_inodes_sb_nr (6)

syzbot has bisected this issue to:

commit 5904de0d735bbb3b4afe9375c5b4f9748f882945
Author: Chen Yu <yu.c.chen@...el.com>
Date:   Fri Apr 14 12:10:42 2023 +0000

    PM: hibernate: Do not get block device exclusively in test_resume mode

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1275be4ba80000
start commit:   4853c74bd7ab Merge tag 'parisc-for-6.5-rc7' of git://git.k..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1175be4ba80000
console output: https://syzkaller.appspot.com/x/log.txt?x=1675be4ba80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=aa796b6080b04102
dashboard link: https://syzkaller.appspot.com/bug?extid=38d04642cea49f3a3d2e
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=171242cfa80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17934703a80000

Reported-by: syzbot+38d04642cea49f3a3d2e@...kaller.appspotmail.com
Fixes: 5904de0d735b ("PM: hibernate: Do not get block device exclusively in test_resume mode")

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

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