From edb2bd99355f300b512c040e91f5870ea14a5d7e Mon Sep 17 00:00:00 2001 From: Si-Wei Liu Date: Fri, 6 May 2022 19:28:15 -0700 Subject: [PATCH 11/16] vhost-net: fix improper cleanup in vhost_net_start MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RH-Author: Jason Wang RH-MergeRequest: 98: Multiqueue fixes for vhost-vDPA RH-Commit: [4/7] e88e482dd4b344f0cc887a358268beaed4d62917 (jasowang/qemu-kvm-cs) RH-Bugzilla: 2070804 RH-Acked-by: Eugenio Pérez RH-Acked-by: Laurent Vivier RH-Acked-by: Cindy Lu vhost_net_start() missed a corresponding stop_one() upon error from vhost_set_vring_enable(). While at it, make the error handling for err_start more robust. No real issue was found due to this though. Signed-off-by: Si-Wei Liu Acked-by: Jason Wang Message-Id: <1651890498-24478-5-git-send-email-si-wei.liu@oracle.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin (cherry picked from commit 6f3910b5eee00b8cc959e94659c0d524c482a418) Signed-off-by: Jason Wang --- hw/net/vhost_net.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index 30379d2ca4..d6d7c51f62 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -381,6 +381,7 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, r = vhost_set_vring_enable(peer, peer->vring_enable); if (r < 0) { + vhost_net_stop_one(get_vhost_net(peer), dev); goto err_start; } } @@ -390,7 +391,8 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, err_start: while (--i >= 0) { - peer = qemu_get_peer(ncs , i); + peer = qemu_get_peer(ncs, i < data_queue_pairs ? + i : n->max_queue_pairs); vhost_net_stop_one(get_vhost_net(peer), dev); } e = k->set_guest_notifiers(qbus->parent, total_notifiers, false); -- 2.31.1