Re: kernel panic: stack is corrupted in udp4_lib_lookup2

[Dmitry Vyukov]

On Thu, Jan 3, 2019 at 10:54 PM Stefano Brivio <sbrivio@xxxxxxxxxx> wrote:
>
> On Thu, 3 Jan 2019 15:15:06 -0600
> Willem de Bruijn <willemdebruijn.kernel@xxxxxxxxx> 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?