Merging upstream version 6.9.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 40 insertions, 3 deletions

diff --git a/lib/test_ubsan.c b/lib/test_ubsan.c
index 2062be1f2e..c288df9372 100644
--- a/lib/test_ubsan.c
+++ b/lib/test_ubsan.c
@@ -11,6 +11,39 @@ typedef void(*test_ubsan_fp)(void);
 			#config, IS_ENABLED(config) ? "y" : "n");	\
 	} while (0)
 
+static void test_ubsan_add_overflow(void)
+{
+	volatile int val = INT_MAX;
+
+	UBSAN_TEST(CONFIG_UBSAN_SIGNED_WRAP);
+	val += 2;
+}
+
+static void test_ubsan_sub_overflow(void)
+{
+	volatile int val = INT_MIN;
+	volatile int val2 = 2;
+
+	UBSAN_TEST(CONFIG_UBSAN_SIGNED_WRAP);
+	val -= val2;
+}
+
+static void test_ubsan_mul_overflow(void)
+{
+	volatile int val = INT_MAX / 2;
+
+	UBSAN_TEST(CONFIG_UBSAN_SIGNED_WRAP);
+	val *= 3;
+}
+
+static void test_ubsan_negate_overflow(void)
+{
+	volatile int val = INT_MIN;
+
+	UBSAN_TEST(CONFIG_UBSAN_SIGNED_WRAP);
+	val = -val;
+}
+
 static void test_ubsan_divrem_overflow(void)
 {
 	volatile int val = 16;
@@ -23,8 +56,8 @@ static void test_ubsan_divrem_overflow(void)
 static void test_ubsan_shift_out_of_bounds(void)
 {
 	volatile int neg = -1, wrap = 4;
-	int val1 = 10;
-	int val2 = INT_MAX;
+	volatile int val1 = 10;
+	volatile int val2 = INT_MAX;
 
 	UBSAN_TEST(CONFIG_UBSAN_SHIFT, "negative exponent");
 	val1 <<= neg;
@@ -90,6 +123,10 @@ static void test_ubsan_misaligned_access(void)
 }
 
 static const test_ubsan_fp test_ubsan_array[] = {
+	test_ubsan_add_overflow,
+	test_ubsan_sub_overflow,
+	test_ubsan_mul_overflow,
+	test_ubsan_negate_overflow,
 	test_ubsan_shift_out_of_bounds,
 	test_ubsan_out_of_bounds,
 	test_ubsan_load_invalid_value,
@@ -97,7 +134,7 @@ static const test_ubsan_fp test_ubsan_array[] = {
 };
 
 /* Excluded because they Oops the module. */
-static const test_ubsan_fp skip_ubsan_array[] = {
+static __used const test_ubsan_fp skip_ubsan_array[] = {
 	test_ubsan_divrem_overflow,
 };