ext4: add missing brelse() update_backups()'s error path

commit ea0abbb648452cdb6e1734b702b6330a7448fcf8 upstream.

Fixes: ac27a0ec112a ("ext4: initial copy of files from ext3")
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org # 2.6.19
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 1da301ee78cebb03dc58f00bacea8bfbc2a8187b..457429fc98ff2ccf3c26d95b14962bc653841430 100644 (file)
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -1095,8 +1095,10 @@ static void update_backups(struct super_block *sb, sector_t blk_off, char *data,
                           backup_block, backup_block -
                           ext4_group_first_block_no(sb, group));
                BUFFER_TRACE(bh, "get_write_access");
-               if ((err = ext4_journal_get_write_access(handle, bh)))
+               if ((err = ext4_journal_get_write_access(handle, bh))) {
+                       brelse(bh);
                        break;
+               }
                lock_buffer(bh);
                memcpy(bh->b_data, data, size);
                if (rest)