Re: general protection fault in udp_tunnel_notify_del_rx_port

[Jakub Kicinski]

On Wed, 22 Jul 2020 06:27:17 -0700 syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    88825726 Merge tag 'drm-fixes-2020-07-17-1' of git://anong..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=143518bb100000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a160d1053fc89af5
> dashboard link: https://syzkaller.appspot.com/bug?extid=a41f2e0a3a2dad7febb0
> compiler:       gcc (GCC) 10.1.0-syz 20200507

FWIW I had a look and it appears that this is not really related to
udp_tunnel_notify_del_rx_port() in any way. Seems a netdev or its
ops get corrupted and udp_tunnel_notify_del_rx_port() just runs into
that.