1 files changed, 3 insertions, 1 deletions

diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 19b9bfc10349..3fb9a26b6f58 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -448,6 +448,8 @@ static int gfs2_block_pointers(struct inode *inode, u64 lblock, int create,
         u64 dblock = 0;
         int boundary;
 
+        BUG_ON(maxlen == 0);
+
         if (gfs2_assert_warn(sdp, !gfs2_is_stuffed(ip)))
                 return 0;
 
@@ -561,7 +563,7 @@ int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsi
         BUG_ON(!new);
 
         bmap_lock(inode, create);
-        ret = gfs2_block_pointers(inode, lblock, create, &bh, &mp, *extlen);
+        ret = gfs2_block_pointers(inode, lblock, create, &bh, &mp, 32);
         bmap_unlock(inode, create);
         *extlen = bh.b_size >> inode->i_blkbits;
         *dblock = bh.b_blocknr;