[PATCH] null dereference in fs/jbd2/journal.c

This is Eric Sesterhenn's jbd patch applied to jbd2.
Commit: 41716c7c21b15e7ecf14f0caf1eef3980707fb74

His words:

Since commit d1807793e1e7e502e3dc047115e9dbc3b50e4534 we dereference a NULL
pointer.  Coverity id #1432.  We set journal to NULL, and use it directly
afterwards.

Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 10db92ced014..c60f378b0f76 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -725,6 +725,7 @@ journal_t * jbd2_journal_init_dev(struct block_device *bdev,
                         __FUNCTION__);
                 kfree(journal);
                 journal = NULL;
+                goto out;
         }
         journal->j_dev = bdev;
         journal->j_fs_dev = fs_dev;
@@ -735,7 +736,7 @@ journal_t * jbd2_journal_init_dev(struct block_device *bdev,
         J_ASSERT(bh != NULL);
         journal->j_sb_buffer = bh;
         journal->j_superblock = (journal_superblock_t *)bh->b_data;
-
+out:
         return journal;
 }