storage: handle NULL return from virGetStorageVol

virGetStorageVol can return NULL on out-of-memory. If it does, cleanly
abort the volume clone operation.

Signed-off-by: Michael Chapman <mike@very.puzzling.org>

diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c
index c83aa8a6e8aec210746f51e6d6e7a24d82556510..2f7b2e559a04d589a504fe07f6fee1e57760c76b 100644 (file)
--- a/src/storage/storage_driver.c
+++ b/src/storage/storage_driver.c
@@ -1828,6 +1828,10 @@ storageVolCreateXMLFrom(virStoragePoolPtr obj,
     pool->volumes.objs[pool->volumes.count++] = newvol;
     volobj = virGetStorageVol(obj->conn, pool->def->name, newvol->name,
                               newvol->key, NULL, NULL);
+    if (!volobj) {
+        pool->volumes.count--;
+        goto cleanup;
+    }
 
     /* Drop the pool lock during volume allocation */
     pool->asyncjobs++;