Messages in this thread | | | Date | Wed, 5 Jan 2022 15:04:43 +0100 | From | Marc Kleine-Budde <> | Subject | Re: [syzbot] kernel BUG in pskb_expand_head |
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On 05.01.2022 05:59:35, Eric Dumazet wrote: > On Wed, Jan 5, 2022 at 3:20 AM syzbot > <syzbot+4c63f36709a642f801c5@syzkaller.appspotmail.com> wrote: > > > > syzbot has found a reproducer for the following issue on: > > > > HEAD commit: c9e6606c7fe9 Linux 5.16-rc8 > > git tree: upstream > > console output: https://syzkaller.appspot.com/x/log.txt?x=148351c3b00000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=32f9fa260d7413b4 > > dashboard link: https://syzkaller.appspot.com/bug?extid=4c63f36709a642f801c5 > > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15435e2bb00000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12f4508db00000 > > > > This C repro looks legit, bug should be in CAN layer.
ACK - it's bug in CAN's ISOTP
> > The issue was bisected to: > > > > commit e4b8954074f6d0db01c8c97d338a67f9389c042f > > Author: Eric Dumazet <edumazet@google.com> > > Date: Tue Dec 7 01:30:37 2021 +0000 > > > > netlink: add net device refcount tracker to struct ethnl_req_info > > Ignore this bisection, an unrelated commit whent in its way.
ACK - We have a RFC fix for this:
https://lore.kernel.org/all/20220105132429.1170627-1-mkl@pengutronix.de
regards, Marc
-- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | [unhandled content-type:application/pgp-signature] | |