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From: Walter Wu <walter-zh.wu@mediatek.com>
To: Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Alexander Potapenko <glider@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Matthias Brugger <matthias.bgg@gmail.com>
Cc: <kasan-dev@googlegroups.com>, <linux-mm@kvack.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>, <wsd_upstream@mediatek.com>,
	Walter Wu <walter-zh.wu@mediatek.com>
Subject: [PATCH 2/2] kasan: add test for invalid size in memmove
Date: Mon, 14 Oct 2019 18:36:54 +0800	[thread overview]
Message-ID: <20191014103654.17982-1-walter-zh.wu@mediatek.com> (raw)

Test size is negative numbers in memmove in order to verify
whether it correctly get KASAN report.

Signed-off-by: Walter Wu <walter-zh.wu@mediatek.com>
---
 lib/test_kasan.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index 49cc4d570a40..06942cf585cc 100644
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -283,6 +283,23 @@ static noinline void __init kmalloc_oob_in_memset(void)
 	kfree(ptr);
 }
 
+static noinline void __init kmalloc_memmove_invalid_size(void)
+{
+	char *ptr;
+	size_t size = 64;
+
+	pr_info("invalid size in memmove\n");
+	ptr = kmalloc(size, GFP_KERNEL);
+	if (!ptr) {
+		pr_err("Allocation failed\n");
+		return;
+	}
+
+	memset((char *)ptr, 0, 64);
+	memmove((char *)ptr, (char *)ptr + 4, -2);
+	kfree(ptr);
+}
+
 static noinline void __init kmalloc_uaf(void)
 {
 	char *ptr;
@@ -773,6 +790,7 @@ static int __init kmalloc_tests_init(void)
 	kmalloc_oob_memset_4();
 	kmalloc_oob_memset_8();
 	kmalloc_oob_memset_16();
+	kmalloc_memmove_invalid_size();
 	kmalloc_uaf();
 	kmalloc_uaf_memset();
 	kmalloc_uaf2();
-- 
2.18.0


WARNING: multiple messages have this Message-ID (diff)
From: Walter Wu <walter-zh.wu@mediatek.com>
To: Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Alexander Potapenko <glider@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Matthias Brugger <matthias.bgg@gmail.com>
Cc: kasan-dev@googlegroups.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org, wsd_upstream@mediatek.com,
	Walter Wu <walter-zh.wu@mediatek.com>
Subject: [PATCH 2/2] kasan: add test for invalid size in memmove
Date: Mon, 14 Oct 2019 18:36:54 +0800	[thread overview]
Message-ID: <20191014103654.17982-1-walter-zh.wu@mediatek.com> (raw)

Test size is negative numbers in memmove in order to verify
whether it correctly get KASAN report.

Signed-off-by: Walter Wu <walter-zh.wu@mediatek.com>
---
 lib/test_kasan.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index 49cc4d570a40..06942cf585cc 100644
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -283,6 +283,23 @@ static noinline void __init kmalloc_oob_in_memset(void)
 	kfree(ptr);
 }
 
+static noinline void __init kmalloc_memmove_invalid_size(void)
+{
+	char *ptr;
+	size_t size = 64;
+
+	pr_info("invalid size in memmove\n");
+	ptr = kmalloc(size, GFP_KERNEL);
+	if (!ptr) {
+		pr_err("Allocation failed\n");
+		return;
+	}
+
+	memset((char *)ptr, 0, 64);
+	memmove((char *)ptr, (char *)ptr + 4, -2);
+	kfree(ptr);
+}
+
 static noinline void __init kmalloc_uaf(void)
 {
 	char *ptr;
@@ -773,6 +790,7 @@ static int __init kmalloc_tests_init(void)
 	kmalloc_oob_memset_4();
 	kmalloc_oob_memset_8();
 	kmalloc_oob_memset_16();
+	kmalloc_memmove_invalid_size();
 	kmalloc_uaf();
 	kmalloc_uaf_memset();
 	kmalloc_uaf2();
-- 
2.18.0

WARNING: multiple messages have this Message-ID (diff)
From: Walter Wu <walter-zh.wu@mediatek.com>
To: Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Alexander Potapenko <glider@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Matthias Brugger <matthias.bgg@gmail.com>
Cc: Walter Wu <walter-zh.wu@mediatek.com>,
	wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org,
	kasan-dev@googlegroups.com, linux-mm@kvack.org,
	linux-mediatek@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] kasan: add test for invalid size in memmove
Date: Mon, 14 Oct 2019 18:36:54 +0800	[thread overview]
Message-ID: <20191014103654.17982-1-walter-zh.wu@mediatek.com> (raw)

Test size is negative numbers in memmove in order to verify
whether it correctly get KASAN report.

Signed-off-by: Walter Wu <walter-zh.wu@mediatek.com>
---
 lib/test_kasan.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index 49cc4d570a40..06942cf585cc 100644
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -283,6 +283,23 @@ static noinline void __init kmalloc_oob_in_memset(void)
 	kfree(ptr);
 }
 
+static noinline void __init kmalloc_memmove_invalid_size(void)
+{
+	char *ptr;
+	size_t size = 64;
+
+	pr_info("invalid size in memmove\n");
+	ptr = kmalloc(size, GFP_KERNEL);
+	if (!ptr) {
+		pr_err("Allocation failed\n");
+		return;
+	}
+
+	memset((char *)ptr, 0, 64);
+	memmove((char *)ptr, (char *)ptr + 4, -2);
+	kfree(ptr);
+}
+
 static noinline void __init kmalloc_uaf(void)
 {
 	char *ptr;
@@ -773,6 +790,7 @@ static int __init kmalloc_tests_init(void)
 	kmalloc_oob_memset_4();
 	kmalloc_oob_memset_8();
 	kmalloc_oob_memset_16();
+	kmalloc_memmove_invalid_size();
 	kmalloc_uaf();
 	kmalloc_uaf_memset();
 	kmalloc_uaf2();
-- 
2.18.0


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             reply	other threads:[~2019-10-14 10:37 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-14 10:36 Walter Wu [this message]
2019-10-14 10:36 ` [PATCH 2/2] kasan: add test for invalid size in memmove Walter Wu
2019-10-14 10:36 ` Walter Wu
2019-10-14 10:41 ` Dmitry Vyukov
2019-10-14 10:41   ` Dmitry Vyukov
2019-10-14 10:41   ` Dmitry Vyukov
2019-10-14 15:07 ` Matthew Wilcox
2019-10-14 15:07   ` Matthew Wilcox
2019-10-14 15:57   ` Walter Wu
2019-10-14 15:57     ` Walter Wu
2019-10-14 15:57     ` Walter Wu

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