[PATCH] affs: possible null pointer dereference in affs_rename()

If affs_bread() fails, the exit path calls mark_buffer_dirty_inode() with a
NULL argument.

Coverity CID: 312.

Signed-off-by: Florin Malita <fmalita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index d4c2d636c479..a42143ca0169 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -416,10 +416,9 @@ affs_rename(struct inode *old_dir, struct dentry *old_dentry,
                         return retval;
         }
 
-        retval = -EIO;
         bh = affs_bread(sb, old_dentry->d_inode->i_ino);
         if (!bh)
-                goto done;
+                return -EIO;
 
         /* Remove header from its parent directory. */
         affs_lock_dir(old_dir);