udf: fix memory leak while allocating blocks during write

commit 2fb7d99d0de3fd8ae869f35ab682581d8455887a upstream.

Need to brelse the buffer_head stored in cur_epos and next_epos.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Shuah Khan <shuah.khan@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 6d24c2c63f9353c7baf7e9c7158360c1ef40a9f4..3c4ffb20b0a533189089bf9562646e604649b7df 100644 (file)
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -648,6 +648,8 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
                                goal, err);
                if (!newblocknum) {
                        brelse(prev_epos.bh);
+                       brelse(cur_epos.bh);
+                       brelse(next_epos.bh);
                        *err = -ENOSPC;
                        return NULL;
                }
@@ -678,6 +680,8 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
        udf_update_extents(inode, laarr, startnum, endnum, &prev_epos);
 
        brelse(prev_epos.bh);
+       brelse(cur_epos.bh);
+       brelse(next_epos.bh);
 
        newblock = udf_get_pblock(inode->i_sb, newblocknum,
                                iinfo->i_location.partitionReferenceNum, 0);