From: Florian Westphal <fw@strlen•de>
To: syzbot <syzbot+e163f2ff7c3f7efd8203@syzkaller•appspotmail.com>
Cc: a@unstable•cc, alobakin@pm•me, andrii@kernel•org, ast@kernel•org,
atenart@kernel•org, b.a.t.m.a.n@lists•open-mesh.org,
bpf@vger•kernel.org, coreteam@netfilter•org,
daniel@iogearbox•net, davem@davemloft•net, fw@strlen•de,
john.fastabend@gmail•com, jonathan.lemon@gmail•com,
kadlec@netfilter•org, kafai@fb•com, kpsingh@kernel•org,
kuba@kernel•org, linux-kernel@vger•kernel.org, lukas@wunner•de,
mareklindner@neomailbox•ch, netdev@vger•kernel.org,
netfilter-devel@vger•kernel.org, pablo@netfilter•org,
songliubraving@fb•com, sven@narfation•org, sw@simonwunderlich•de,
syzkaller-bugs@googlegroups•com, yhs@fb•com
Subject: Re: [syzbot] WARNING: suspicious RCU usage in __dev_queue_xmit
Date: Mon, 10 Jan 2022 12:48:50 +0100 [thread overview]
Message-ID: <20220110114850.GD317@breakpoint.cc> (raw)
In-Reply-To: <000000000000ca1d2005d537ebac@google.com>
syzbot <syzbot+e163f2ff7c3f7efd8203@syzkaller•appspotmail.com> wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 4c375272fb0b Merge branch 'net-add-preliminary-netdev-refc..
> git tree: net-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=164749a9b00000
> kernel config: https://syzkaller.appspot.com/x/.config?x=2b8e24e3a80e3875
> dashboard link: https://syzkaller.appspot.com/bug?extid=e163f2ff7c3f7efd8203
> 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=11493641b00000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11ac6aceb00000
> include/linux/netfilter_netdev.h:97 suspicious rcu_dereference_check() usage!
#syz fix: netfilter: egress: avoid a lockdep splat
prev parent reply other threads:[~2022-01-10 11:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-10 10:37 [syzbot] WARNING: suspicious RCU usage in __dev_queue_xmit syzbot
2022-01-10 11:48 ` Florian Westphal [this message]
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