When the vhost-user frontend like Virtio-user tries to
reconnect to the restarted Vhost backend, the Vhost backend
segfaults when multiqueue is enabled.
This is caused by VHOST_USER_GET_VRING_BASE being called for
a virtqueue that has not been created before, causing a NULL
pointer dereferencing.
This patch adds the VHOST_USER_GET_VRING_BASE requests to
the list of requests that trigger queue pair allocations.
Fixes: 160cbc815b41 ("vhost: remove a hack on queue allocation")
Cc: sta...@dpdk.org
Reported-by: Yinan Wang <yinan.w...@intel.com>
Signed-off-by: Maxime Coquelin <maxime.coque...@redhat.com>
---
lib/vhost/vhost_user.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/vhost/vhost_user.c b/lib/vhost/vhost_user.c
index 433f412fa8..29a4c9af60 100644
--- a/lib/vhost/vhost_user.c
+++ b/lib/vhost/vhost_user.c
@@ -2796,6 +2796,7 @@ vhost_user_check_and_alloc_queue_pair(struct virtio_net
*dev,
break;
case VHOST_USER_SET_VRING_NUM:
case VHOST_USER_SET_VRING_BASE:
+ case VHOST_USER_GET_VRING_BASE:
case VHOST_USER_SET_VRING_ENABLE:
vring_idx = msg->payload.state.index;
break;
--
2.31.1
