lib: test_kasan: add some testcases
Add some out of bounds testcases to test_kasan module.
Signed-off-by: Wang Long <long.wanglong@huawei.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index c1efb1b..c32f3b0 100644
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -138,6 +138,71 @@
kfree(ptr2);
}
+static noinline void __init kmalloc_oob_memset_2(void)
+{
+ char *ptr;
+ size_t size = 8;
+
+ pr_info("out-of-bounds in memset2\n");
+ ptr = kmalloc(size, GFP_KERNEL);
+ if (!ptr) {
+ pr_err("Allocation failed\n");
+ return;
+ }
+
+ memset(ptr+7, 0, 2);
+ kfree(ptr);
+}
+
+static noinline void __init kmalloc_oob_memset_4(void)
+{
+ char *ptr;
+ size_t size = 8;
+
+ pr_info("out-of-bounds in memset4\n");
+ ptr = kmalloc(size, GFP_KERNEL);
+ if (!ptr) {
+ pr_err("Allocation failed\n");
+ return;
+ }
+
+ memset(ptr+5, 0, 4);
+ kfree(ptr);
+}
+
+
+static noinline void __init kmalloc_oob_memset_8(void)
+{
+ char *ptr;
+ size_t size = 8;
+
+ pr_info("out-of-bounds in memset8\n");
+ ptr = kmalloc(size, GFP_KERNEL);
+ if (!ptr) {
+ pr_err("Allocation failed\n");
+ return;
+ }
+
+ memset(ptr+1, 0, 8);
+ kfree(ptr);
+}
+
+static noinline void __init kmalloc_oob_memset_16(void)
+{
+ char *ptr;
+ size_t size = 16;
+
+ pr_info("out-of-bounds in memset16\n");
+ ptr = kmalloc(size, GFP_KERNEL);
+ if (!ptr) {
+ pr_err("Allocation failed\n");
+ return;
+ }
+
+ memset(ptr+1, 0, 16);
+ kfree(ptr);
+}
+
static noinline void __init kmalloc_oob_in_memset(void)
{
char *ptr;
@@ -264,6 +329,10 @@
kmalloc_oob_krealloc_less();
kmalloc_oob_16();
kmalloc_oob_in_memset();
+ kmalloc_oob_memset_2();
+ kmalloc_oob_memset_4();
+ kmalloc_oob_memset_8();
+ kmalloc_oob_memset_16();
kmalloc_uaf();
kmalloc_uaf_memset();
kmalloc_uaf2();