Unverified Commit 95b98a3f authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!2985 hugetlbfs: avoid overflow in hugetlbfs_fallocate 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zizhi Wo <wozizhi@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/R7NCCUSDW6IV65SWEE5KLR252O6I6M32/ 
 
https://gitee.com/openeuler/kernel/issues/I8JDQ7?from=project-issue 
 
Link:https://gitee.com/openeuler/kernel/pulls/2985

 

Reviewed-by: default avatarzhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parents 39622c1a b842deff

fs/hugetlbfs/inode.c

+1 −1
Original line number Diff line number Diff line
@@ -836,7 +836,7 @@ static long hugetlbfs_fallocate(struct file *file, int mode, loff_t offset, 
	 * as well as being converted to page offsets.

	 */

	start = offset >> hpage_shift;

	end = (offset + len + hpage_size - 1) >> hpage_shift;

	end = DIV_ROUND_UP_ULL(offset + len, hpage_size);



	inode_lock(inode);