From: Huawei Xie <huawei.xie@intel.com>
Date: Tue, 3 Mar 2015 02:26:04 +0000 (+0800)
Subject: vhost: fix crash by removing device when requested
X-Git-Tag: spdx-start~9487
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=391b5f425c4613e649e5353ed8161e75967b0f3a;p=dpdk.git

vhost: fix crash by removing device when requested

This patch fixes the segfault issue in the case vhost receives
new VHOST_SET_MEM_TABLE message without VHOST_VRING_GET_VRING_BASE
(which we uses as the stop message).

Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Tommy Long <thomas.long@intel.com>
---

diff --git a/lib/librte_vhost/vhost_user/virtio-net-user.c b/lib/librte_vhost/vhost_user/virtio-net-user.c
index 97c517742f..aa087063d6 100644
--- a/lib/librte_vhost/vhost_user/virtio-net-user.c
+++ b/lib/librte_vhost/vhost_user/virtio-net-user.c
@@ -109,6 +109,10 @@ user_set_mem_table(struct vhost_device_ctx ctx, struct VhostUserMsg *pmsg)
 	if (dev == NULL)
 		return -1;
 
+	/* Remove from the data plane. */
+	if (dev->flags & VIRTIO_DEV_RUNNING)
+		notify_ops->destroy_device(dev);
+
 	if (dev->mem) {
 		free_mem_region(dev);
 		free(dev->mem);