[PATCH 5/6] btrfs-progs: check allocation result in add_clone_source

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Resolves-Coverity-CID: 1054894
Signed-off-by: David Sterba <dsterba@xxxxxxx>
---
 cmds-send.c | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/cmds-send.c b/cmds-send.c
index b17b5e2ca666..9b32c1f0e624 100644
--- a/cmds-send.c
+++ b/cmds-send.c
@@ -172,11 +172,16 @@ out:
 	return ret;
 }
 
-static void add_clone_source(struct btrfs_send *s, u64 root_id)
+static int add_clone_source(struct btrfs_send *s, u64 root_id)
 {
 	s->clone_sources = realloc(s->clone_sources,
 		sizeof(*s->clone_sources) * (s->clone_sources_count + 1));
+
+	if (!s->clone_sources)
+		return -ENOMEM;
 	s->clone_sources[s->clone_sources_count++] = root_id;
+
+	return 0;
 }
 
 static int write_buf(int fd, const void *buf, int size)
@@ -475,7 +480,11 @@ int cmd_send(int argc, char **argv)
 				goto out;
 			}
 
-			add_clone_source(&send, root_id);
+			ret = add_clone_source(&send, root_id);
+			if (ret < 0) {
+				fprintf(stderr, "ERROR: not enough memory\n");
+				goto out;
+			}
 			subvol_uuid_search_finit(&send.sus);
 			free(subvol);
 			subvol = NULL;
@@ -575,7 +584,11 @@ int cmd_send(int argc, char **argv)
 			goto out;
 		}
 
-		add_clone_source(&send, parent_root_id);
+		ret = add_clone_source(&send, parent_root_id);
+		if (ret < 0) {
+			fprintf(stderr, "ERROR: not enough memory\n");
+			goto out;
+		}
 	}
 
 	for (i = optind; i < argc; i++) {
@@ -671,7 +684,11 @@ int cmd_send(int argc, char **argv)
 			goto out;
 
 		/* done with this subvol, so add it to the clone sources */
-		add_clone_source(&send, root_id);
+		ret = add_clone_source(&send, root_id);
+		if (ret < 0) {
+			fprintf(stderr, "ERROR: not enough memory\n");
+			goto out;
+		}
 
 		parent_root_id = 0;
 		full_send = 0;
-- 
2.1.3

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