linux-kernel - Re: BUG: unable to handle kernel paging request in vsock_diag

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Message-ID: <20171026081852.GA31901@stefanha-x1.localdomain>
Date:   Thu, 26 Oct 2017 10:18:52 +0200
From:   Stefan Hajnoczi <stefanha@...hat.com>
To:     syzbot 
        <bot+d6b6d5e0ac5609c835098f88c893a7bb3cfa0900@...kaller.appspotmail.com>
Cc:     davem@...emloft.net, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        syzkaller-bugs@...glegroups.com,
        virtualization@...ts.linux-foundation.org
Subject: Re: BUG: unable to handle kernel paging request in vsock_diag_dump

On Tue, Oct 24, 2017 at 08:14:01AM -0700, syzbot wrote:
> Hello,
> 
> syzkaller hit the following crash on
> 28f50eb20931f32a2ceeb6aba8fa2cd5ca96ad9f
> git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/master
> compiler: gcc (GCC) 7.1.1 20170620
> .config is attached
> Raw console output is attached.
> C reproducer is attached
> syzkaller reproducer is attached. See https://goo.gl/kgGztJ
> for information about syzkaller reproducers
> 
> 
> IP: read_pnet include/net/net_namespace.h:269 [inline]
> IP: sock_net include/net/sock.h:2299 [inline]
> IP: vsock_diag_dump+0x290/0xa80 net/vmw_vsock/diag.c:87

Feel free to ignore my previous reply, Cong Wang
<xiyou.wangcong@...il.com> has already found the root cause.  Thank you!

Stefan