Merging upstream version 6.7.7.

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

2 files changed, 27 insertions, 8 deletions

diff --git a/include/kunit/resource.h b/include/kunit/resource.h
index c7383e90f5..4ad69a2642 100644
--- a/include/kunit/resource.h
+++ b/include/kunit/resource.h
@@ -391,6 +391,27 @@ void kunit_remove_resource(struct kunit *test, struct kunit_resource *res);
 typedef void (kunit_action_t)(void *);
 
 /**
+ * KUNIT_DEFINE_ACTION_WRAPPER() - Wrap a function for use as a deferred action.
+ *
+ * @wrapper: The name of the new wrapper function define.
+ * @orig: The original function to wrap.
+ * @arg_type: The type of the argument accepted by @orig.
+ *
+ * Defines a wrapper for a function which accepts a single, pointer-sized
+ * argument. This wrapper can then be passed to kunit_add_action() and
+ * similar. This should be used in preference to casting a function
+ * directly to kunit_action_t, as casting function pointers will break
+ * control flow integrity (CFI), leading to crashes.
+ */
+#define KUNIT_DEFINE_ACTION_WRAPPER(wrapper, orig, arg_type)	\
+	static void wrapper(void *in)				\
+	{							\
+		arg_type arg = (arg_type)in;			\
+		orig(arg);					\
+	}
+
+
+/**
  * kunit_add_action() - Call a function when the test ends.
  * @test: Test case to associate the action with.
  * @action: The function to run on test exit
diff --git a/include/kunit/test.h b/include/kunit/test.h
index 68ff01aee2..20ed9f9275 100644
--- a/include/kunit/test.h
+++ b/include/kunit/test.h
@@ -33,9 +33,7 @@
 DECLARE_STATIC_KEY_FALSE(kunit_running);
 
 struct kunit;
-
-/* Size of log associated with test. */
-#define KUNIT_LOG_SIZE 2048
+struct string_stream;
 
 /* Maximum size of parameter description string. */
 #define KUNIT_PARAM_DESC_SIZE 128
@@ -133,7 +131,7 @@ struct kunit_case {
 	/* private: internal use only. */
 	enum kunit_status status;
 	char *module_name;
-	char *log;
+	struct string_stream *log;
 };
 
 static inline char *kunit_status_to_ok_not_ok(enum kunit_status status)
@@ -253,7 +251,7 @@ struct kunit_suite {
 	/* private: internal use only */
 	char status_comment[KUNIT_STATUS_COMMENT_SIZE];
 	struct dentry *debugfs;
-	char *log;
+	struct string_stream *log;
 	int suite_init_err;
 };
 
@@ -279,7 +277,7 @@ struct kunit {
 
 	/* private: internal use only. */
 	const char *name; /* Read only after initialization! */
-	char *log; /* Points at case log after initialization */
+	struct string_stream *log; /* Points at case log after initialization */
 	struct kunit_try_catch try_catch;
 	/* param_value is the current parameter value for a test case. */
 	const void *param_value;
@@ -315,7 +313,7 @@ const char *kunit_filter_glob(void);
 char *kunit_filter(void);
 char *kunit_filter_action(void);
 
-void kunit_init_test(struct kunit *test, const char *name, char *log);
+void kunit_init_test(struct kunit *test, const char *name, struct string_stream *log);
 
 int kunit_run_tests(struct kunit_suite *suite);
 
@@ -473,7 +471,7 @@ static inline void *kunit_kcalloc(struct kunit *test, size_t n, size_t size, gfp
 
 void kunit_cleanup(struct kunit *test);
 
-void __printf(2, 3) kunit_log_append(char *log, const char *fmt, ...);
+void __printf(2, 3) kunit_log_append(struct string_stream *log, const char *fmt, ...);
 
 /**
  * kunit_mark_skipped() - Marks @test_or_suite as skipped