Messages in this thread Patch in this message | | | From | Paul Lawrence <> | Subject | [PATCH v3 4/5] kasan: Add tests for alloca poisonong | Date | Fri, 1 Dec 2017 13:36:42 -0800 |
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Signed-off-by: Greg Hackmann <ghackmann@google.com> Signed-off-by: Paul Lawrence <paullawrence@google.com> --- 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(); -- 2.15.0.531.g2ccb3012c9-goog
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