linux-kernel - Re: [syzbot] [can?] possible deadlock in j1939_sk

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <000000000000cb9c3d060a28dad8@google.com>
Date:   Tue, 14 Nov 2023 19:54:05 -0800
From:   syzbot <syzbot+1591462f226d9cbf0564@...kaller.appspotmail.com>
To:     arnd@...db.de, astrajoan@...oo.com,
        bridge@...ts.linux-foundation.org, davem@...emloft.net,
        dvyukov@...gle.com, edumazet@...gle.com, hdanton@...a.com,
        ivan.orlov0322@...il.com, kernel@...gutronix.de, kuba@...nel.org,
        linux-can@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux@...pel-privat.de, mkl@...gutronix.de,
        mudongliangabcd@...il.com, netdev@...r.kernel.org,
        nikolay@...dia.com, o.rempel@...gutronix.de, pabeni@...hat.com,
        robin@...tonic.nl, roopa@...dia.com, skhan@...uxfoundation.org,
        socketcan@...tkopp.net, stephen@...workplumber.org,
        syzkaller-bugs@...glegroups.com, syzkaller@...glegroups.com
Subject: Re: [syzbot] [can?] possible deadlock in j1939_sk_errqueue (2)

syzbot has bisected this issue to:

commit 2030043e616cab40f510299f09b636285e0a3678
Author: Oleksij Rempel <o.rempel@...gutronix.de>
Date:   Fri May 21 11:57:20 2021 +0000

    can: j1939: fix Use-after-Free, hold skb ref while in use

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1438c947680000
start commit:   1b907d050735 Merge tag '6.7-rc-smb3-client-fixes-part2' of..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1638c947680000
console output: https://syzkaller.appspot.com/x/log.txt?x=1238c947680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=88e7ba51eecd9cd6
dashboard link: https://syzkaller.appspot.com/bug?extid=1591462f226d9cbf0564
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17fea8fb680000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1633dc70e80000

Reported-by: syzbot+1591462f226d9cbf0564@...kaller.appspotmail.com
Fixes: 2030043e616c ("can: j1939: fix Use-after-Free, hold skb ref while in use")

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