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>

1 files changed, 2 insertions, 3 deletions

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 62b21ccea882..e7580aeb6fbc 100644
--- 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();
         }