linux-kernel - Re: [PATCH net] vhost_net: stop device during reset owner

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Message-Id: <20180129.123554.366362754710512867.davem@davemloft.net>
Date:   Mon, 29 Jan 2018 12:35:54 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     jasowang@...hat.com
Cc:     mst@...hat.com, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] vhost_net: stop device during reset owner

From: Jason Wang <jasowang@...hat.com>
Date: Thu, 25 Jan 2018 22:03:52 +0800

> We don't stop device before reset owner, this means we could try to
> serve any virtqueue kick before reset dev->worker. This will result a
> warn since the work was pending at llist during owner resetting. Fix
> this by stopping device during owner reset.
> 
> Reported-by: syzbot+eb17c6162478cc50632c@...kaller.appspotmail.com
> Fixes: 3a4d5c94e9593 ("vhost_net: a kernel-level virtio server")
> Signed-off-by: Jason Wang <jasowang@...hat.com>

Applied and queued up for -stable.