Currently while searching for current page in the sorted entry table
of the page there is a out of bound access. Added a bound check to fix
the error.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202310241724.Ed02yUz9-lkp@intel.com/
Signed-off-by: Manas Ghandat <ghandatmanas@gmail.com>
---
V1 -> V2 : Removed redundant check on stbl
fs/jfs/jfs_dtree.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c
index 92b7c533407c..cf67d32d5b7f 100644
--- a/fs/jfs/jfs_dtree.c
+++ b/fs/jfs/jfs_dtree.c
@@ -633,6 +633,9 @@ int dtSearch(struct inode *ip, struct component_name * key, ino_t * data,
for (base = 0, lim = p->header.nextindex; lim; lim >>= 1) {
index = base + (lim >> 1);
+ if (stbl[index] < 0)
+ goto out;
+
if (p->header.flag & BT_LEAF) {
/* uppercase leaf name to compare */
cmp =
--
2.37.2