ext4: fix use of potentially uninitialized variables in debugging code

If ext_debugging is enabled and path[depth].p_ext is NULL, len
and lblock are printed non initialized

Signed-off-by: Andi Shyti <andi@etezian.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 62b21ccea882f349e0d0746795733fae714b3cd2..e7580aeb6fbc77dbd9f8cb54e6f4fdcc15683b4b 100644 (file)
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2285,8 +2285,8 @@ ext4_ext_put_gap_in_cache(struct inode *inode, struct ext4_ext_path *path,
                                ext4_lblk_t block)
 {
        int depth = ext_depth(inode);
-       unsigned long len;
-       ext4_lblk_t lblock;
+       unsigned long len = 0;
+       ext4_lblk_t lblock = 0;
        struct ext4_extent *ex;
 
        ex = path[depth].p_ext;
@@ -2323,7 +2323,6 @@ ext4_ext_put_gap_in_cache(struct inode *inode, struct ext4_ext_path *path,
                        ext4_es_insert_extent(inode, lblock, len, ~0,
                                              EXTENT_STATUS_HOLE);
        } else {
-               lblock = len = 0;
                BUG();
        }