In commit 967ac8af4475 ("ext4: fix potential integer overflow in
alloc_flex_gd()"), an overflow check is added to alloc_flex_gd() to
prevent the allocated memory from being smaller than expected due to
the overflow. However, after kmalloc() is replaced with kmalloc_array()
in commit 6da2ec56059c ("treewide: kmalloc() -> kmalloc_array()"), the
kmalloc_array() function has an overflow check, so the above problem
will not occur. Therefore, the extra check is removed.
Signed-off-by: Baokun Li <libaokun1@xxxxxxxxxx>
---
fs/ext4/resize.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index c6d4539d4c1f..0a57b199883c 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -236,10 +236,7 @@ static struct ext4_new_flex_group_data *alloc_flex_gd(unsigned int flexbg_size)
if (flex_gd == NULL)
goto out3;
- if (flexbg_size >= UINT_MAX / sizeof(struct ext4_new_group_data))
- goto out2;
flex_gd->count = flexbg_size;
-
flex_gd->groups = kmalloc_array(flexbg_size,
sizeof(struct ext4_new_group_data),
GFP_NOFS);
--
2.31.1
