UBIFS: add a couple of extra asserts

... to catch possible memory corruptions.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 7ed13e1e216a..4cfb3e82c56f 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -2032,6 +2032,8 @@ static int check_leaf(struct ubifs_info *c, struct ubifs_zbranch *zbr,
                 long long blk_offs;
                 struct ubifs_data_node *dn = node;
 
+                ubifs_assert(zbr->len >= UBIFS_DATA_NODE_SZ);
+
                 /*
                  * Search the inode node this data node belongs to and insert
                  * it to the RB-tree of inodes.
@@ -2060,6 +2062,8 @@ static int check_leaf(struct ubifs_info *c, struct ubifs_zbranch *zbr,
                 struct ubifs_dent_node *dent = node;
                 struct fsck_inode *fscki1;
 
+                ubifs_assert(zbr->len >= UBIFS_DENT_NODE_SZ);
+
                 err = ubifs_validate_entry(c, dent);
                 if (err)
                         goto out_dump;