From: Karsten Graul <kgraul@linux.ibm.com>
To: Eric Dumazet <edumazet@google.com>,
syzbot <syzbot+090d23ddbd5cd185c2e0@syzkaller.appspotmail.com>
Cc: Andrii Nakryiko <andrii@kernel.org>,
Alexei Starovoitov <ast@kernel.org>, bpf <bpf@vger.kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
David Miller <davem@davemloft.net>,
David Ahern <dsahern@kernel.org>,
John Fastabend <john.fastabend@gmail.com>,
Martin KaFai Lau <kafai@fb.com>, KP Singh <kpsingh@kernel.org>,
Jakub Kicinski <kuba@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
netdev <netdev@vger.kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Song Liu <songliubraving@fb.com>,
syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
Yonghong Song <yhs@fb.com>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
Wenjia Zhang <wenjia@linux.ibm.com>,
Thorsten Winkler <twinkler@linux.ibm.com>,
Alexandra Winter <wintera@linux.ibm.com>
Subject: Re: [syzbot] BUG: unable to handle kernel NULL pointer dereference in __tcp_transmit_skb
Date: Thu, 24 Mar 2022 09:11:33 +0100 [thread overview]
Message-ID: <871cbef1-d1e2-78a0-7efe-2925bfe90110@linux.ibm.com> (raw)
In-Reply-To: <CANn89iKMWp3o7ZS9dL+6GgWR-tr2rOvMKdKxb1=aDmhLB7mFrw@mail.gmail.com>
On 24/03/2022 02:41, Eric Dumazet wrote:
> On Wed, Mar 23, 2022 at 5:13 PM syzbot
> <syzbot+090d23ddbd5cd185c2e0@syzkaller.appspotmail.com> wrote:
>>
>> Hello,
>>
>> syzbot found the following issue on:
>>
>> HEAD commit: 36c2e31ad25b net: geneve: add missing netlink policy and s..
>> git tree: net-next
>> console output: https://syzkaller.appspot.com/x/log.txt?x=17c308a5700000
>> kernel config: https://syzkaller.appspot.com/x/.config?x=4a15e2288cf165c9
>> dashboard link: https://syzkaller.appspot.com/bug?extid=090d23ddbd5cd185c2e0
>> 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=171eadbd700000
>> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12cacda3700000
>>
>> IMPORTANT: if you fix the issue, please add the following tag to the commit:
>> Reported-by: syzbot+090d23ddbd5cd185c2e0@syzkaller.appspotmail.com
>>
>
> AF_SMC does not handle TCP_REPAIR properly.
>
> Look at commit d9e4c129181004e ("mptcp: only admit explicitly
> supported sockopt") for an equivalent bug/fix.
Got it, we will fix that.
next prev parent reply other threads:[~2022-03-24 8:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-24 0:13 [syzbot] BUG: unable to handle kernel NULL pointer dereference in __tcp_transmit_skb syzbot
2022-03-24 1:41 ` Eric Dumazet
2022-03-24 8:11 ` Karsten Graul [this message]
2022-03-24 8:10 ` syzbot
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