On Wed, Nov 29, 2017 at 10:50 PM, 'Paul Lawrence' via kasan-dev
<kasan-dev@xxxxxxxxxxxxxxxx> wrote:
> Signed-off-by: Greg Hackmann <ghackmann@xxxxxxxxxx>
> Signed-off-by: Paul Lawrence <paullawrence@xxxxxxxxxx>
>
> lib/test_kasan.c | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)
>
> diff --git a/lib/test_kasan.c b/lib/test_kasan.c
> index ef1a3ac1397e..2724f86c4cef 100644
> --- a/lib/test_kasan.c
> +++ b/lib/test_kasan.c
> @@ -472,6 +472,26 @@ static noinline void __init use_after_scope_test(void)
> p[1023] = 1;
> }
>
> +static noinline void __init kasan_alloca_oob_left(void)
> +{
> + volatile int i = 10;
> + char alloca_array[i];
> + char *p = alloca_array - 1;
> +
> + pr_info("out-of-bounds to left on alloca\n");
> + *(volatile char *)p;
> +}
> +
> +static noinline void __init kasan_alloca_oob_right(void)
> +{
> + volatile int i = 10;
> + char alloca_array[i];
> + char *p = alloca_array + i;
> +
> + pr_info("out-of-bounds to right on alloca\n");
> + *(volatile char *)p;
> +}
> +
> static int __init kmalloc_tests_init(void)
> {
> /*
> @@ -502,6 +522,8 @@ static int __init kmalloc_tests_init(void)
> memcg_accounted_kmem_cache();
> kasan_stack_oob();
> kasan_global_oob();
> + kasan_alloca_oob_left();
> + kasan_alloca_oob_right();
> ksize_unpoisons_memory();
> copy_user_test();
> use_after_scope_test();
Reviewed-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
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