ext4: fix header check in ext4_ext_search_right() for deep extent trees.

[safe/jmp/linux-2.6] / fs / ext4 / extents.c

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index e2eab19..e0aa4fe 100644 (file)
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -1122,7 +1122,8 @@ ext4_ext_search_right(struct inode *inode, struct ext4_ext_path *path,
        struct ext4_extent_idx *ix;
        struct ext4_extent *ex;
        ext4_fsblk_t block;
-       int depth, ee_len;
+       int depth;      /* Note, NOT eh_depth; depth from top of tree */
+       int ee_len;
 
        BUG_ON(path == NULL);
        depth = path->p_depth;
@@ -1179,7 +1180,8 @@ got_index:
                if (bh == NULL)
                        return -EIO;
                eh = ext_block_hdr(bh);
-               if (ext4_ext_check_header(inode, eh, depth)) {
+               /* subtract from p_depth to get proper eh_depth */
+               if (ext4_ext_check_header(inode, eh, path->p_depth - depth)) {
                        put_bh(bh);
                        return -EIO;
                }