2016-07-21 21:35, Yuanhan Liu:
> On Thu, Jul 21, 2016 at 04:19:35PM +0300, Ilya Maximets wrote:
> > If something abnormal happened to QEMU, 'connect()' can block calling
> > thread (e.g. main thread of OVS) forever or for a really long time.
> > This can break whole application or block the reconnection thread.
> >
> > Example with OVS:
> >
> > ovs_rcu(urcu2)|WARN|blocked 512000 ms waiting for main to quiesce
> > (gdb) bt
> > #0 connect () from /lib64/libpthread.so.0
> > #1 vhost_user_create_client (vsocket=0xa816e0)
> > #2 rte_vhost_driver_register
> > #3 netdev_dpdk_vhost_user_construct
> > #4 netdev_open (name=0xa664b0 "vhost1")
> > [...]
> > #11 main
> >
> > Fix that by setting non-blocking mode for client sockets for connection.
> >
> > Fixes: 64ab701c3d1e ("vhost: add vhost-user client mode")
> >
> > Signed-off-by: Ilya Maximets <i.maximets at samsung.com>
>
> Acked-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
Applied, thanks
