lkl: tests: minor fn parameter and kasan parsing changes

arch/lkl/Makefile

@@ -68,6 +68,7 @@ core-y += arch/lkl/drivers/
 configh-y = printf "/* this header is autogenerated */\n"
 configh-$(CONFIG_64BIT) += && printf '\#define LKL_CONFIG_64BIT 1\n'
 configh-$(CONFIG_CPU_BIG_ENDIAN) += && printf '\#define LKL_CONFIG_CPU_BIG_ENDIAN 1\n'
+configh-$(CONFIG_KASAN_KUNIT_TEST) += && printf '\#define LKL_CONFIG_KASAN_KUNIT_TEST 1\n'
 
 quiet_cmd_gen_configh = GEN     $@
       cmd_gen_configh = mkdir -p $(dir $@); ($(configh-y)) > $@

tools/lkl/Makefile.autoconf

@@ -111,14 +111,12 @@ define nt_host
 endef
 
 define kasan_test_enable
-  $(call set_autoconf_var,KASAN_TEST,y)
   $(call set_kernel_config,KUNIT,y)
   $(call set_kernel_config,BUILTIN_CMDLINE,\"kunit.filter_glob=\")
   $(call set_kernel_config,KASAN_KUNIT_TEST,y)
 endef
 
 define kasan_enable
-  $(call set_autoconf_var,KASAN,y)
   $(call set_kernel_config,KASAN,y)
   $(if $(filter yes,$(kasan_test)), $(call kasan_test_enable))
 endef

tools/lkl/lib/hijack/Build

@@ -9,3 +9,6 @@ liblkl-zpoline-y += hijack.o
 liblkl-zpoline-y += init.o
 liblkl-zpoline-y += xlate.o
 liblkl-zpoline-y += dbg_handler.o
+
+# -std=gnu23/c23 fails due to HOST_CALL (*host_##name)()
+CFLAGS_hijack.o += -std=gnu11

tools/lkl/tests/boot.c

@@ -555,30 +555,34 @@ static int lkl_test_join(void)
 
 static const char *boot_log;
 
-#ifdef LKL_HOST_CONFIG_KASAN_TEST
+#ifdef LKL_CONFIG_KASAN_KUNIT_TEST
 
 #define KASAN_CMD_LINE "kunit.filter_glob=kasan* "
 
 static int lkl_test_kasan(void)
 {
 	char *log = strdup(boot_log);
 	char *line = NULL;
-	char c, d;
+	int p, f, s, t;
+	int num_lines, result = TEST_FAILURE;
 
 	line = strtok(log, "\n");
-	while (line) {
-		if (sscanf(line, "[ %*f] ok %*d kasa%c%c", &c, &d) == 1 &&
-			   c == 'n') {
+	for (num_lines = 0; line; num_lines++) {
+		if (sscanf(line,
+			   "[ %*f] # kasan: pass:%d fail:%d skip:%d total:%d",
+			   &p, &f, &s, &t) == 4) {
 			lkl_test_logf("%s", line);
-			return TEST_SUCCESS;
+			result = (f == 0 ? TEST_SUCCESS : TEST_FAILURE);
+			goto out;
 		}
 
 		line = strtok(NULL, "\n");
 	}
 
+	lkl_test_logf("no kasan test output in %d log lines\n", num_lines);
+out:
 	free(log);
-
-	return TEST_FAILURE;
+	return result;
 }
 #else
 #define KASAN_CMD_LINE
@@ -707,7 +711,7 @@ struct lkl_test tests[] = {
 	LKL_TEST(semaphore),
 	LKL_TEST(join),
 	LKL_TEST(start_kernel),
-#ifdef LKL_HOST_CONFIG_KASAN_TEST
+#ifdef LKL_CONFIG_KASAN_KUNIT_TEST
 	LKL_TEST(kasan),
 #endif
 	LKL_TEST(getpid),

tools/lkl/tests/test.c

@@ -90,7 +90,7 @@ int lkl_test_run(const struct lkl_test *tests, int nr, const char *fmt, ...)
 
 		start = clock();
 
-		ret = t->fn(t->arg1, t->arg2, t->arg3);
+		ret = t->fn();
 
 		stop = clock();
 

tools/lkl/tests/test.h

@@ -9,16 +9,14 @@
 
 struct lkl_test {
 	const char *name;
-	int (*fn)();
-	void *arg1, *arg2, *arg3;
+	int (*fn)(void);
 };
 
 /**
  * Simple wrapper to initialize a test entry.
- * @name - test name, it assume test function is named test_@name
- * @vargs - arguments to be passed to the function
+ * @name - test name; assume existing test function named lkl_test_@name
  */
-#define LKL_TEST(name, ...) { #name, lkl_test_##name, __VA_ARGS__ }
+#define LKL_TEST(name) { #name, lkl_test_##name }
 
 /**
  * lkl_test_run - run a test suite