[PATCH v5 6/7] kasan: Test fix: Warn if the UAF could not be detected in kmalloc_uaf2

From: Alexander Potapenko
Date: Wed Mar 09 2016 - 06:07:16 EST


Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
Acked-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
---
lib/test_kasan.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index 90ad74f..82169fb 100644
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -294,6 +294,8 @@ static noinline void __init kmalloc_uaf2(void)
}

ptr1[40] = 'x';
+ if (ptr1 == ptr2)
+ pr_err("Could not detect use-after-free: ptr1 == ptr2\n");
kfree(ptr2);
}

--
2.7.0.rc3.207.g0ac5344