linux-kernel - Re: WARNING: ODEBUG bug in get

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Message-ID: <000000000000d2adea05adda0870@google.com>
Date:   Thu, 27 Aug 2020 04:14:06 -0700
From:   syzbot <syzbot+e3cf8f93cf86936710db@...kaller.appspotmail.com>
To:     alsa-devel@...a-project.org, arnd@...db.de, axboe@...nel.dk,
        baolin.wang@...aro.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, maz@...nel.org, oleg@...hat.com,
        perex@...ex.cz, peterz@...radead.org,
        syzkaller-bugs@...glegroups.com, tiwai@...e.com,
        viro@...iv.linux.org.uk
Subject: Re: WARNING: ODEBUG bug in get_signal

syzbot has bisected this issue to:

commit a9ed4a6560b8562b7e2e2bed9527e88001f7b682
Author: Marc Zyngier <maz@...nel.org>
Date:   Wed Aug 19 16:12:17 2020 +0000

    epoll: Keep a reference on files added to the check list

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15e57751900000
start commit:   15bc20c6 Merge tag 'tty-5.9-rc3' of git://git.kernel.org/p..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=17e57751900000
console output: https://syzkaller.appspot.com/x/log.txt?x=13e57751900000
kernel config:  https://syzkaller.appspot.com/x/.config?x=978db74cb30aa994
dashboard link: https://syzkaller.appspot.com/bug?extid=e3cf8f93cf86936710db
userspace arch: i386
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13236eb6900000

Reported-by: syzbot+e3cf8f93cf86936710db@...kaller.appspotmail.com
Fixes: a9ed4a6560b8 ("epoll: Keep a reference on files added to the check list")

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