linux-kernel - Re: general protection fault in kernfs_add

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Message-ID: <000000000000e2ac670597ad2663@google.com>
Date:   Mon, 18 Nov 2019 22:27:01 -0800
From:   syzbot <syzbot+db1637662f412ac0d556@...kaller.appspotmail.com>
To:     benh@...nel.crashing.org, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, rafael@...nel.org,
        syzkaller-bugs@...glegroups.com, tj@...nel.org,
        torvalds@...ux-foundation.org
Subject: Re: general protection fault in kernfs_add_one

syzbot has bisected this bug to:

commit 726e41097920a73e4c7c33385dcc0debb1281e18
Author: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Date:   Tue Jul 10 00:29:10 2018 +0000

     drivers: core: Remove glue dirs from sysfs earlier

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=168e1012e00000
start commit:   5e335542 Merge branch 'for-linus' of git://git.kernel.org/..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=158e1012e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=118e1012e00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9917ff4b798e1a1e
dashboard link: https://syzkaller.appspot.com/bug?extid=db1637662f412ac0d556
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10a66c11400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1346c771400000

Reported-by: syzbot+db1637662f412ac0d556@...kaller.appspotmail.com
Fixes: 726e41097920 ("drivers: core: Remove glue dirs from sysfs earlier")

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