xen_disk: fix possible null-ptr dereference

Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-07-28 06:03:45 +00:00 · 2014-07-28 06:03:45 +00:00 · 8cced12143
commit 8cced12143
parent 8efc936336
1 changed files with 1 additions and 0 deletions
--- a/hw/block/xen_disk.c
+++ b/hw/block/xen_disk.c
@ -589,6 +589,7 @@ static int blk_send_response_one(struct ioreq *ioreq)
        break;
    default:
        dst = NULL;
+        return 0;
    }
    memcpy(dst, &resp, sizeof(resp));
    blkdev->rings.common.rsp_prod_pvt++;