btrfs: Mem leak in btrfs_get_acl()

It seems to me that we leak the memory allocated to 'value' in
btrfs_get_acl() if the call to posix_acl_from_xattr() fails.
Here's a patch that attempts to correct that problem.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
index 2222d161c7b6..6d1410e392d3 100644
--- a/fs/btrfs/acl.c
+++ b/fs/btrfs/acl.c
@@ -60,8 +60,10 @@ static struct posix_acl *btrfs_get_acl(struct inode *inode, int type)
                 size = __btrfs_getxattr(inode, name, value, size);
                 if (size > 0) {
                         acl = posix_acl_from_xattr(value, size);
-                        if (IS_ERR(acl))
+                        if (IS_ERR(acl)) {
+                                kfree(value);
                                 return acl;
+                        }
                         set_cached_acl(inode, type, acl);
                 }
                 kfree(value);