The patch titled
Subject: kmsan: add memsetXX tests
has been added to the -mm mm-unstable branch. Its filename is
kmsan-add-memsetxx-tests.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kmsan-add-memsetxx-tests.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Alexander Potapenko <glider@xxxxxxxxxx>
Subject: kmsan: add memsetXX tests
Date: Fri, 3 Mar 2023 15:14:33 +0100
Add tests ensuring that memset16()/memset32()/memset64() are instrumented
by KMSAN and correctly initialize the memory.
Link: https://lkml.kernel.org/r/20230303141433.3422671-4-glider@xxxxxxxxxx
Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
Reviewed-by: Marco Elver <elver@xxxxxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/kmsan/kmsan_test.c~kmsan-add-memsetxx-tests
+++ a/mm/kmsan/kmsan_test.c
@@ -504,6 +504,25 @@ static void test_memcpy_aligned_to_unali
KUNIT_EXPECT_TRUE(test, report_matches(&expect));
}
+/* Generate test cases for memset16(), memset32(), memset64(). */
+#define DEFINE_TEST_MEMSETXX(size) \
+ static void test_memset##size(struct kunit *test) \
+ { \
+ EXPECTATION_NO_REPORT(expect); \
+ volatile uint##size##_t uninit; \
+ \
+ kunit_info(test, \
+ "memset" #size "() should initialize memory\n"); \
+ DO_NOT_OPTIMIZE(uninit); \
+ memset##size((uint##size##_t *)&uninit, 0, 1); \
+ kmsan_check_memory((void *)&uninit, sizeof(uninit)); \
+ KUNIT_EXPECT_TRUE(test, report_matches(&expect)); \
+ }
+
+DEFINE_TEST_MEMSETXX(16)
+DEFINE_TEST_MEMSETXX(32)
+DEFINE_TEST_MEMSETXX(64)
+
static noinline void fibonacci(int *array, int size, int start)
{
if (start < 2 || (start == size))
@@ -550,6 +569,9 @@ static struct kunit_case kmsan_test_case
KUNIT_CASE(test_memcpy_aligned_to_aligned),
KUNIT_CASE(test_memcpy_aligned_to_unaligned),
KUNIT_CASE(test_memcpy_aligned_to_unaligned2),
+ KUNIT_CASE(test_memset16),
+ KUNIT_CASE(test_memset32),
+ KUNIT_CASE(test_memset64),
KUNIT_CASE(test_long_origin_chain),
{},
};
_
Patches currently in -mm which might be from glider@xxxxxxxxxx are
x86-kmsan-dont-rename-memintrinsics-in-uninstrumented-files.patch
kmsan-another-take-at-fixing-memcpy-tests.patch
x86-kmsan-use-c-versions-of-memset16-memset32-memset64.patch
kmsan-add-memsetxx-tests.patch
