linux-kernel - Re: INFO: task can't die in nbd

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Message-ID: <000000000000bf140d05b2f6dae8@google.com>
Date:   Sat, 31 Oct 2020 05:43:05 -0700
From:   syzbot <syzbot+69a90a5e8f6b59086b2a@...kaller.appspotmail.com>
To:     axboe@...nel.dk, hdanton@...a.com, josef@...icpanda.com,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        mchristi@...hat.com, nbd@...er.debian.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: INFO: task can't die in nbd_ioctl

syzbot has bisected this issue to:

commit e9e006f5fcf2bab59149cb38a48a4817c1b538b4
Author: Mike Christie <mchristi@...hat.com>
Date:   Sun Aug 4 19:10:06 2019 +0000

    nbd: fix max number of supported devs

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=154dc192500000
start commit:   4e78c578 Add linux-next specific files for 20201030
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=174dc192500000
console output: https://syzkaller.appspot.com/x/log.txt?x=134dc192500000
kernel config:  https://syzkaller.appspot.com/x/.config?x=83318758268dc331
dashboard link: https://syzkaller.appspot.com/bug?extid=69a90a5e8f6b59086b2a
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15e051a8500000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15bf75b8500000

Reported-by: syzbot+69a90a5e8f6b59086b2a@...kaller.appspotmail.com
Fixes: e9e006f5fcf2 ("nbd: fix max number of supported devs")

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