[dpdk-dev] [RESEND PATCH] vhost_user: Make sure that memory map is set before attempting address translation

[Pavel Fedin]

Malfunctioning virtio clients may not send VHOST_USER_SET_MEM_TABLE for
some reason. This causes NULL dereference in qva_to_vva().

Signed-off-by: Pavel Fedin <p.fedin at samsung.com>
Acked-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
---
 lib/librte_vhost/virtio-net.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/librte_vhost/virtio-net.c b/lib/librte_vhost/virtio-net.c
index 0ba5045..3e7cec0 100644
--- a/lib/librte_vhost/virtio-net.c
+++ b/lib/librte_vhost/virtio-net.c
@@ -630,7 +630,7 @@ set_vring_addr(struct vhost_device_ctx ctx, struct vhost_vring_addr *addr)
 	struct vhost_virtqueue *vq;
 
 	dev = get_device(ctx);
-	if (dev == NULL)
+	if ((dev == NULL) || (dev->mem == NULL))
 		return -1;
 
 	/* addr->index refers to the queue index. The txq 1, rxq is 0. */
-- 
2.1.1