Re: [dpdk-stable] [dpdk-dev] [PATCH] vhost: fix deadlock when vhost unregister

[Maxime Coquelin <maxime.coquelin@redhat.com>]

On 1/28/19 7:55 AM, sunwenjie wrote:
> When rte_vhost_driver_unregister  delete the connection fd,
> fdset_try_del will always try and donot release the
> vhostuser.mutex if the fd is busy, but the fdset_event_dispatch
> will set the  fd to busy and call vhost_user_msg_handler to get
> vhostuser.mutex, which will  cause deadlock. Unlock the
> vhost_user.mutexif fdset_try_del fail and relock it when retry.
> 
> Fixes: 8b4b949144b8 ("vhost: fix dead lock on closing in server mode")
> Cc: stable@dpdk.org
> 
> Signed-off-by: sunwenjie <findtheonlyway@gmail.com>
> ---
>   lib/librte_vhost/socket.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 

Applied to dpdk-next-virtio/master with suggested commit message
rewording, and fixed Signed-off-by name.

Thanks,
Maxime