linux-kernel - Re: WARNING in kfree

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Date:   Sun, 01 Sep 2019 07:06:00 -0700
From:   syzbot <syzbot+5aca688dac0796c56129@...kaller.appspotmail.com>
To:     dhowells@...hat.com, ebiggers@...nel.org,
        gregkh@...uxfoundation.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, rafael@...nel.org,
        syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: Re: WARNING in kfree

syzbot has bisected this bug to:

commit 3deadeebafcec6a0a7c9397bd32ea5ac6d5191c1
Author: David Howells <dhowells@...hat.com>
Date:   Mon Jan 21 14:04:22 2019 +0000

     vfs: Convert debugfs to use the new mount API

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=115d9e56600000
start commit:   ed2393ca Add linux-next specific files for 20190827
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=135d9e56600000
console output: https://syzkaller.appspot.com/x/log.txt?x=155d9e56600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2ef5940a07ed45f4
dashboard link: https://syzkaller.appspot.com/bug?extid=5aca688dac0796c56129
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1595ee12600000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16df7fd2600000

Reported-by: syzbot+5aca688dac0796c56129@...kaller.appspotmail.com
Fixes: 3deadeebafce ("vfs: Convert debugfs to use the new mount API")

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