On 2024/7/25 1:05, Nikita Zhandarovich wrote:
The result of multiplication between values derived from functions
dir_buckets() and bucket_blocks() *could* technically reach
2^30 * 2^2 = 2^32.
While unlikely to happen, it is prudent to ensure that it will not
lead to integer overflow. Thus, use mul_u32_u32() as it's more
appropriate to mitigate the issue.
Found by Linux Verification Center (linuxtesting.org) with static
analysis tool SVACE.
Fixes: 3843154598a0 ("f2fs: introduce large directory support")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@xxxxxxxxxx>
Reviewed-by: Chao Yu <chao@xxxxxxxxxx>
Thanks,
