linux-kernel - Re: general protection fault in j1939_sk

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Message-ID: <0000000000002ab713059c524079@google.com>
Date:   Fri, 17 Jan 2020 01:06:01 -0800
From:   syzbot <syzbot+4857323ec1bb236f6a45@...kaller.appspotmail.com>
To:     bst@...gutronix.de, davem@...emloft.net,
        dev.kurt@...dijck-laurijssen.be, ecathinds@...il.com,
        kernel@...gutronix.de, linux-can@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux@...pel-privat.de,
        lkp@...el.com, maxime.jayat@...ile-devices.fr, mkl@...gutronix.de,
        netdev@...r.kernel.org, o.rempel@...gutronix.de, robin@...tonic.nl,
        socketcan@...tkopp.net, syzkaller-bugs@...glegroups.com
Subject: Re: general protection fault in j1939_sk_bind

syzbot suspects this bug was fixed by commit:

commit 00d4e14d2e4caf5f7254a505fee5eeca8cd37bd4
Author: Oleksij Rempel <o.rempel@...gutronix.de>
Date:   Fri Dec 6 14:18:35 2019 +0000

     can: j1939: j1939_sk_bind(): take priv after lock is held

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1001b266e00000
start commit:   32ef9553 Merge tag 'fsnotify_for_v5.5-rc1' of git://git.ke..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=c2e464ae414aee8c
dashboard link: https://syzkaller.appspot.com/bug?extid=4857323ec1bb236f6a45
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=177c34a2e00000

If the result looks correct, please mark the bug fixed by replying with:

#syz fix: can: j1939: j1939_sk_bind(): take priv after lock is held

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