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[06/15] qemu-img rebase: Fix segfault if backing file can't be opened

Message ID 1302187764-16421-7-git-send-email-kwolf@redhat.com
State New
Headers show

Commit Message

Kevin Wolf April 7, 2011, 2:49 p.m. UTC 
bdrv_delete must not be called for a NULL BlockDriverState.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
---
 qemu-img.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
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Patch

diff --git a/qemu-img.c b/qemu-img.c
index 074388c..d9c2c12 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -1411,8 +1411,12 @@  out:
     qemu_progress_end();
     /* Cleanup */
     if (!unsafe) {
-        bdrv_delete(bs_old_backing);
-        bdrv_delete(bs_new_backing);
+        if (bs_old_backing != NULL) {
+            bdrv_delete(bs_old_backing);
+        }
+        if (bs_new_backing != NULL) {
+            bdrv_delete(bs_new_backing);
+        }
     }
 
     bdrv_delete(bs);