Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0c0922eb authored by Wang Long's avatar Wang Long Committed by Alex Shi
Browse files

lib: test_kasan: add some testcases 



Add some out of bounds testcases to test_kasan module.

Signed-off-by: default avatarWang Long <long.wanglong@huawei.com>
Acked-by: default avatarAndrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit f523e737c08f5daaec9fac017e1bc5695e6f2760)
Signed-off-by: default avatarAlex Shi <alex.shi@linaro.org>
parent c67d3961

lib/test_kasan.c

+69 −0
Original line number Diff line number Diff line
@@ -138,6 +138,71 @@ static noinline void __init kmalloc_oob_16(void) 
	kfree(ptr2);

}



static noinline void __init kmalloc_oob_memset_2(void)

{

	char *ptr;

	size_t size = 8;



	pr_info("out-of-bounds in memset2\n");

	ptr = kmalloc(size, GFP_KERNEL);

	if (!ptr) {

		pr_err("Allocation failed\n");

		return;

	}



	memset(ptr+7, 0, 2);

	kfree(ptr);

}



static noinline void __init kmalloc_oob_memset_4(void)

{

	char *ptr;

	size_t size = 8;



	pr_info("out-of-bounds in memset4\n");

	ptr = kmalloc(size, GFP_KERNEL);

	if (!ptr) {

		pr_err("Allocation failed\n");

		return;

	}



	memset(ptr+5, 0, 4);

	kfree(ptr);

}





static noinline void __init kmalloc_oob_memset_8(void)

{

	char *ptr;

	size_t size = 8;



	pr_info("out-of-bounds in memset8\n");

	ptr = kmalloc(size, GFP_KERNEL);

	if (!ptr) {

		pr_err("Allocation failed\n");

		return;

	}



	memset(ptr+1, 0, 8);

	kfree(ptr);

}



static noinline void __init kmalloc_oob_memset_16(void)

{

	char *ptr;

	size_t size = 16;



	pr_info("out-of-bounds in memset16\n");

	ptr = kmalloc(size, GFP_KERNEL);

	if (!ptr) {

		pr_err("Allocation failed\n");

		return;

	}



	memset(ptr+1, 0, 16);

	kfree(ptr);

}



static noinline void __init kmalloc_oob_in_memset(void)

{

	char *ptr;
@@ -264,6 +329,10 @@ static int __init kmalloc_tests_init(void) 
	kmalloc_oob_krealloc_less();

	kmalloc_oob_16();

	kmalloc_oob_in_memset();

	kmalloc_oob_memset_2();

	kmalloc_oob_memset_4();

	kmalloc_oob_memset_8();

	kmalloc_oob_memset_16();

	kmalloc_uaf();

	kmalloc_uaf_memset();

	kmalloc_uaf2();