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, 14 insertions, 0 deletions

diff --git a/tools/testing/selftests/kselftest.h b/tools/testing/selftests/kselftest.h
index c3b6d2604b1e..8deeb4b72e73 100644
--- a/tools/testing/selftests/kselftest.h
+++ b/tools/testing/selftests/kselftest.h
@@ -54,6 +54,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <stdarg.h>
+#include <stdbool.h>
 #include <string.h>
 #include <stdio.h>
 #include <sys/utsname.h>
@@ -104,6 +105,7 @@ struct ksft_count {
 
 static struct ksft_count ksft_cnt;
 static unsigned int ksft_plan;
+static bool ksft_debug_enabled;
 
 static inline unsigned int ksft_test_num(void)
 {
@@ -175,6 +177,18 @@ static inline __printf(1, 2) void ksft_print_msg(const char *msg, ...)
 	va_end(args);
 }
 
+static inline void ksft_print_dbg_msg(const char *msg, ...)
+{
+	va_list args;
+
+	if (!ksft_debug_enabled)
+		return;
+
+	va_start(args, msg);
+	ksft_print_msg(msg, args);
+	va_end(args);
+}
+
 static inline void ksft_perror(const char *msg)
 {
 	ksft_print_msg("%s: %s (%d)\n", msg, strerror(errno), errno);