Merge tag 'locking-futex-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull futex updates from Thomas Gleixner:
 "A set of updates for futexes and related selftests:

   - Plug the ptrace_may_access() race against a concurrent exec() which
     allows to pass the check before the target's process transition in
     exec() by taking a read lock on signal->ext_update_lock.

   - A large set of cleanups and enhancement to the futex selftests. The
     bulk of changes is the conversion to the kselftest harness"

* tag 'locking-futex-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
  selftest/futex: Fix spelling mistake "boundarie" -> "boundary"
  selftests/futex: Remove logging.h file
  selftests/futex: Drop logging.h include from futex_numa
  selftests/futex: Refactor futex_numa_mpol with kselftest_harness.h
  selftests/futex: Refactor futex_priv_hash with kselftest_harness.h
  selftests/futex: Refactor futex_waitv with kselftest_harness.h
  selftests/futex: Refactor futex_requeue with kselftest_harness.h
  selftests/futex: Refactor futex_wait with kselftest_harness.h
  selftests/futex: Refactor futex_wait_private_mapped_file with kselftest_harness.h
  selftests/futex: Refactor futex_wait_unitialized_heap with kselftest_harness.h
  selftests/futex: Refactor futex_wait_wouldblock with kselftest_harness.h
  selftests/futex: Refactor futex_wait_timeout with kselftest_harness.h
  selftests/futex: Refactor futex_requeue_pi_signal_restart with kselftest_harness.h
  selftests/futex: Refactor futex_requeue_pi_mismatched_ops with kselftest_harness.h
  selftests/futex: Refactor futex_requeue_pi with kselftest_harness.h
  selftests: kselftest: Create ksft_print_dbg_msg()
  futex: Don't leak robust_list pointer on exec race
  selftest/futex: Compile also with libnuma < 2.0.16
  selftest/futex: Reintroduce "Memory out of range" numa_mpol's subtest
  selftest/futex: Make the error check more precise for futex_numa_mpol
  ...

1 files changed, 23 insertions, 53 deletions

diff --git a/tools/testing/selftests/futex/functional/futex_requeue.c b/tools/testing/selftests/futex/functional/futex_requeue.c
index 51485be6eb2f..69e2555b6039 100644
--- a/tools/testing/selftests/futex/functional/futex_requeue.c
+++ b/tools/testing/selftests/futex/functional/futex_requeue.c
@@ -7,24 +7,15 @@
 
 #include <pthread.h>
 #include <limits.h>
-#include "logging.h"
+
 #include "futextest.h"
+#include "../../kselftest_harness.h"
 
-#define TEST_NAME "futex-requeue"
 #define timeout_ns  30000000
 #define WAKE_WAIT_US 10000
 
 volatile futex_t *f1;
 
-void usage(char *prog)
-{
-	printf("Usage: %s\n", prog);
-	printf("  -c	Use color\n");
-	printf("  -h	Display this help message\n");
-	printf("  -v L	Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n",
-	       VQUIET, VCRITICAL, VINFO);
-}
-
 void *waiterfn(void *arg)
 {
 	struct timespec to;
@@ -38,67 +29,49 @@ void *waiterfn(void *arg)
 	return NULL;
 }
 
-int main(int argc, char *argv[])
+TEST(requeue_single)
 {
-	pthread_t waiter[10];
-	int res, ret = RET_PASS;
-	int c, i;
 	volatile futex_t _f1 = 0;
 	volatile futex_t f2 = 0;
+	pthread_t waiter[10];
+	int res;
 
 	f1 = &_f1;
 
-	while ((c = getopt(argc, argv, "cht:v:")) != -1) {
-		switch (c) {
-		case 'c':
-			log_color(1);
-			break;
-		case 'h':
-			usage(basename(argv[0]));
-			exit(0);
-		case 'v':
-			log_verbosity(atoi(optarg));
-			break;
-		default:
-			usage(basename(argv[0]));
-			exit(1);
-		}
-	}
-
-	ksft_print_header();
-	ksft_set_plan(2);
-	ksft_print_msg("%s: Test futex_requeue\n",
-		       basename(argv[0]));
-
 	/*
 	 * Requeue a waiter from f1 to f2, and wake f2.
 	 */
 	if (pthread_create(&waiter[0], NULL, waiterfn, NULL))
-		error("pthread_create failed\n", errno);
+		ksft_exit_fail_msg("pthread_create failed\n");
 
 	usleep(WAKE_WAIT_US);
 
-	info("Requeuing 1 futex from f1 to f2\n");
+	ksft_print_dbg_msg("Requeuing 1 futex from f1 to f2\n");
 	res = futex_cmp_requeue(f1, 0, &f2, 0, 1, 0);
-	if (res != 1) {
+	if (res != 1)
 		ksft_test_result_fail("futex_requeue simple returned: %d %s\n",
 				      res ? errno : res,
 				      res ? strerror(errno) : "");
-		ret = RET_FAIL;
-	}
 
-
-	info("Waking 1 futex at f2\n");
+	ksft_print_dbg_msg("Waking 1 futex at f2\n");
 	res = futex_wake(&f2, 1, 0);
 	if (res != 1) {
 		ksft_test_result_fail("futex_requeue simple returned: %d %s\n",
 				      res ? errno : res,
 				      res ? strerror(errno) : "");
-		ret = RET_FAIL;
 	} else {
 		ksft_test_result_pass("futex_requeue simple succeeds\n");
 	}
+}
+
+TEST(requeue_multiple)
+{
+	volatile futex_t _f1 = 0;
+	volatile futex_t f2 = 0;
+	pthread_t waiter[10];
+	int res, i;
 
+	f1 = &_f1;
 
 	/*
 	 * Create 10 waiters at f1. At futex_requeue, wake 3 and requeue 7.
@@ -106,31 +79,28 @@ int main(int argc, char *argv[])
 	 */
 	for (i = 0; i < 10; i++) {
 		if (pthread_create(&waiter[i], NULL, waiterfn, NULL))
-			error("pthread_create failed\n", errno);
+			ksft_exit_fail_msg("pthread_create failed\n");
 	}
 
 	usleep(WAKE_WAIT_US);
 
-	info("Waking 3 futexes at f1 and requeuing 7 futexes from f1 to f2\n");
+	ksft_print_dbg_msg("Waking 3 futexes at f1 and requeuing 7 futexes from f1 to f2\n");
 	res = futex_cmp_requeue(f1, 0, &f2, 3, 7, 0);
 	if (res != 10) {
 		ksft_test_result_fail("futex_requeue many returned: %d %s\n",
 				      res ? errno : res,
 				      res ? strerror(errno) : "");
-		ret = RET_FAIL;
 	}
 
-	info("Waking INT_MAX futexes at f2\n");
+	ksft_print_dbg_msg("Waking INT_MAX futexes at f2\n");
 	res = futex_wake(&f2, INT_MAX, 0);
 	if (res != 7) {
 		ksft_test_result_fail("futex_requeue many returned: %d %s\n",
 				      res ? errno : res,
 				      res ? strerror(errno) : "");
-		ret = RET_FAIL;
 	} else {
 		ksft_test_result_pass("futex_requeue many succeeds\n");
 	}
-
-	ksft_print_cnts();
-	return ret;
 }
+
+TEST_HARNESS_MAIN