Since commit 2566378d6d13bf4d28c7770bdbda5f7682594bbe, libvhost-user no longer panics on disconnect (rc == 0), and instead silently ignores an invalid VHOST_USER_NONE message.
Without extra work from the API user, this will simply busy-loop on HUP events. The obvious thing to do is to exit(0) instead, while additional or different work can be done by overriding iface->process_msg(). Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com> --- contrib/libvhost-user/libvhost-user.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-user.c index 54e643d871..ebe30c7dab 100644 --- a/contrib/libvhost-user/libvhost-user.c +++ b/contrib/libvhost-user/libvhost-user.c @@ -1220,6 +1220,8 @@ vu_process_message(VuDev *dev, VhostUserMsg *vmsg) case VHOST_USER_SET_CONFIG: return vu_set_config(dev, vmsg); case VHOST_USER_NONE: + /* if you need processing before exit, override iface->process_msg */ + exit(0); break; case VHOST_USER_POSTCOPY_ADVISE: return vu_set_postcopy_advise(dev, vmsg); -- 2.17.1.906.g10fd178552