netdev - panic at sock_zerocopy_put when I ssh into a VM

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Date:   Tue, 8 Aug 2017 19:14:27 -0600
From:   David Ahern <dsahern@...il.com>
To:     willemb@...gle.com,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: panic at sock_zerocopy_put when I ssh into a VM

Willem:

I updated my host server this morning to top of net-next -- commit
53b948356554. I am not doing anything fancy or intentionally using the
zerocopy code. I launch a VM with vhost and attempt to login via ssh.
Doing that triggers a panic in the host at sock_zerocopy_put. The
attached is a snapshot of the console -- best I can get for the stack trace.

David

Download attachment "bt.jpg" of type "image/jpeg" (566366 bytes)