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From: Alexander Potapenko <glider@google.com>
To: adech.fo@gmail.com, cl@linux.com, dvyukov@google.com,
	akpm@linux-foundation.org, ryabinin.a.a@gmail.com,
	rostedt@goodmis.org, iamjoonsoo.kim@lge.com, js1304@gmail.com,
	kcc@google.com
Cc: kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org
Subject: [PATCH v8 6/7] kasan: Test fix: Warn if the UAF could not be detected in kmalloc_uaf2
Date: Tue, 15 Mar 2016 11:10:35 +0100	[thread overview]
Message-ID: <f52ae8e29bf172179da196db4af8cbc7f6de9c4b.1458036040.git.glider@google.com> (raw)
In-Reply-To: <cover.1458036040.git.glider@google.com>
In-Reply-To: <cover.1458036040.git.glider@google.com>

Signed-off-by: Alexander Potapenko <glider@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
---
 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

  parent reply	other threads:[~2016-03-15 10:11 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-15 10:10 [PATCH v8 0/7] SLAB support for KASAN Alexander Potapenko
2016-03-15 10:10 ` [PATCH v8 1/7] kasan: Modify kmalloc_large_oob_right(), add kmalloc_pagealloc_oob_right() Alexander Potapenko
2016-03-15 10:10 ` [PATCH v8 2/7] mm, kasan: SLAB support Alexander Potapenko
2016-03-15 10:10 ` [PATCH v8 3/7] mm, kasan: Added GFP flags to KASAN API Alexander Potapenko
2016-03-15 10:10 ` [PATCH v8 4/7] arch, ftrace: For KASAN put hard/soft IRQ entries into separate sections Alexander Potapenko
2016-03-15 10:10 ` [PATCH v8 5/7] mm, kasan: Stackdepot implementation. Enable stackdepot for SLAB Alexander Potapenko
2016-03-15 10:10 ` Alexander Potapenko [this message]
2016-03-15 10:10 ` [PATCH v8 7/7] mm: kasan: Initial memory quarantine implementation Alexander Potapenko
2016-05-10 15:39   ` Andrey Ryabinin
2016-05-10 17:17     ` Alexander Potapenko
2016-05-10 19:57       ` Andrey Ryabinin
2016-05-11  9:04         ` Alexander Potapenko

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