Commit 56465a38 authored by Jiajian Ye's avatar Jiajian Ye Committed by Linus Torvalds
Browse files

tools/vm/page_owner_sort.c: add a security check 

Add a security check after using malloc() to allocate memory.

Link: https://lkml.kernel.org/r/20220301151438.166118-2-yejiajian2018@email.szu.edu.cn


Signed-off-by: default avatarJiajian Ye <yejiajian2018@email.szu.edu.cn>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Yinan Zhang <zhangyinan2019@email.szu.edu.cn>
Cc: Yixuan Cao <caoyixuan2019@email.szu.edu.cn>
Cc: Zhenliang Wei <weizhenliang@huawei.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 59d7cb27

tools/vm/page_owner_sort.c

+6 −0
Original line number Diff line number Diff line
@@ -217,7 +217,13 @@ static void add_list(char *buf, int len) 
		printf("max_size too small??\n");

		exit(1);

	}



	list[list_size].txt = malloc(len+1);

	if (!list[list_size].txt) {

		printf("Out of memory\n");

		exit(1);

	}



	list[list_size].len = len;

	list[list_size].num = 1;

	list[list_size].page_num = get_page_num(buf);