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authorYueHaibing <yuehaibing@huawei.com>2019-03-12 15:06:53 +0800
committerMichael S. Tsirkin <mst@redhat.com>2019-05-12 13:11:35 -0400
commitdf0bfe7501e9319546ea380d39674a4179e059c3 (patch)
treed2525506a8657631ca828173406ff0a5704b2136
parente93c9c99a629c61837d5a7fc2120cd2b6c70dbdd (diff)
downloadlinux-df0bfe7501e9319546ea380d39674a4179e059c3.tar.bz2
virtio_ring: Fix potential mem leak in virtqueue_add_indirect_packed
'desc' should be freed before leaving from err handing path. Fixes: 1ce9e6055fa0 ("virtio_ring: introduce packed ring support") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> stable@vger.kernel.org
-rw-r--r--drivers/virtio/virtio_ring.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 5df92c308286..021010424fa5 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -1004,6 +1004,7 @@ static int virtqueue_add_indirect_packed(struct vring_virtqueue *vq,
if (unlikely(vq->vq.num_free < 1)) {
pr_debug("Can't add buf len 1 - avail = 0\n");
+ kfree(desc);
END_USE(vq);
return -ENOSPC;
}