From: Stefano Brivio <sbrivio@redhat.com>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: Willem de Bruijn <willemdebruijn.kernel@gmail.com>,
Eric Dumazet <eric.dumazet@gmail.com>,
syzbot <syzbot+4ad25edc7a33e4ab91e0@syzkaller.appspotmail.com>,
David Miller <davem@davemloft.net>,
Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
linux-kernel <linux-kernel@vger.kernel.org>,
Network Development <netdev@vger.kernel.org>,
syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Subject: Re: kernel panic: stack is corrupted in udp4_lib_lookup2
Date: Fri, 4 Jan 2019 11:54:35 +0100 [thread overview]
Message-ID: <20190104115435.478b4b4a@redhat.com> (raw)
In-Reply-To: <CACT4Y+aAofhchOpKTjLGGkQb5PAa74Uyp7kowdSoAwt130ZpAg@mail.gmail.com>
On Fri, 4 Jan 2019 11:32:12 +0100
Dmitry Vyukov <dvyukov@google.com> wrote:
> On Thu, Jan 3, 2019 at 10:54 PM Stefano Brivio <sbrivio@redhat.com> wrote:
> >
> > On Thu, 3 Jan 2019 15:15:06 -0600
> > Willem de Bruijn <willemdebruijn.kernel@gmail.com> wrote:
> >
> > > syzbot generated stack traces with
> > >
> > > [ 183.517380] udpv6_err+0x46/0x60
> > > [ 183.520739] ? __udp6_lib_err+0x1890/0x1890
> > > [ 183.525054] gue6_err_proto_handler+0x199/0x280
> >
> > Where? I can't find that in any logs linked from the dashboard at
> > https://syzkaller.appspot.com/bug?extid=4ad25edc7a33e4ab91e0 :(
>
> Stefano, there are these 4 bugs reported that have similarly looking
> reproducers involving udp sockets and that crash modes that looks like
> stack corruption/overflow:
>
> https://syzkaller.appspot.com/bug?extid=14005fa30c9a07192934
> https://syzkaller.appspot.com/bug?extid=d14090007dc9ba5fa9b7
> https://syzkaller.appspot.com/bug?extid=137ed32ec9a6d5b0d5fe
> https://syzkaller.appspot.com/bug?id=d5bc3e0c66d200d72216ab343a67c4327e4a3452
>
> Are these the same bug as this?
Judging from the reproducers for the first three, they seem to be. I
guess I can trigger tests also for those by sending a (sharp)syz
test ... e-mail with the patch to the Reported-by: addresses, right?
And the three reports you pointed out from the pile of corrupted
reports also seem to match, others look unrelated.
--
Stefano
next prev parent reply other threads:[~2019-01-04 10:54 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-03 13:07 kernel panic: stack is corrupted in udp4_lib_lookup2 syzbot
2019-01-03 19:39 ` Willem de Bruijn
2019-01-03 19:41 ` Willem de Bruijn
2019-01-03 20:00 ` Stefano Brivio
2019-01-03 20:01 ` Eric Dumazet
2019-01-03 20:07 ` Stefano Brivio
2019-01-03 21:15 ` Willem de Bruijn
2019-01-03 21:54 ` Stefano Brivio
2019-01-04 10:32 ` Dmitry Vyukov
2019-01-04 10:34 ` Dmitry Vyukov
2019-01-04 10:54 ` Stefano Brivio [this message]
2019-01-04 11:05 ` Dmitry Vyukov
2019-01-04 17:14 ` Stefano Brivio
2019-01-04 17:24 ` Willem de Bruijn
2019-01-04 17:50 ` Stefano Brivio
2019-01-04 17:26 ` Dmitry Vyukov
2019-01-04 18:05 ` Stefano Brivio
2019-01-07 9:04 ` Dmitry Vyukov
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