diff mbox

btrfs: fix uninitialized return value

Message ID 1307978303-2756-1-git-send-email-dsterba@suse.cz (mailing list archive)
State New, archived
Headers show

Commit Message

David Sterba June 13, 2011, 3:18 p.m. UTC
When allocation fails in btrfs_read_fs_root_no_name, ret is not set
although it is returned, holding a garbage value.

Signed-off-by: David Sterba <dsterba@suse.cz>
---
 fs/btrfs/disk-io.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

Comments

Li Zefan June 14, 2011, 2:58 a.m. UTC | #1
23:18, David Sterba wrote:
> When allocation fails in btrfs_read_fs_root_no_name, ret is not set
> although it is returned, holding a garbage value.
> 
> Signed-off-by: David Sterba <dsterba@suse.cz>

Thanks! My gcc doesn't warn on this..

Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>

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diff mbox

Patch

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 9f68c68..7e48b01 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1300,12 +1300,12 @@  again:
 		return root;
 
 	root->free_ino_ctl = kzalloc(sizeof(*root->free_ino_ctl), GFP_NOFS);
-	if (!root->free_ino_ctl)
-		goto fail;
 	root->free_ino_pinned = kzalloc(sizeof(*root->free_ino_pinned),
 					GFP_NOFS);
-	if (!root->free_ino_pinned)
+	if (!root->free_ino_pinned || !root->free_ino_ctl) {
+		ret = -ENOMEM;
 		goto fail;
+	}
 
 	btrfs_init_free_ino_ctl(root);
 	mutex_init(&root->fs_commit_mutex);