linux-kernel - [GIT pull] locking/urgent for v6.16-rc7

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Message-ID: <175301303546.263023.1426155806374119244.tglx@xen13>
Date: Sun, 20 Jul 2025 14:04:57 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, x86@...nel.org
Subject: [GIT pull] locking/urgent for v6.16-rc7

Linus,

please pull the latest locking/urgent branch from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking-urgent-2025-07-20

up to:  d0a48dc4df5c: selftests/futex: Convert 32-bit timespec to 64-bit version for 32-bit compatibility mode

A single fix for the futex selftest code to make 32-bit user space work
correctly on 64-bit kernels. sys_futex_wait() expects a struct
__kernel_timespec for the timeout, but the selftest uses struct timespec,
which is the original 32-bit non 2038 compliant variant. Fix it up by
converting the callsite supplied timespec to a __kernel_timespec and hand
that into the syscall.

Thanks,

	tglx

------------------>
Terry Tritton (1):
      selftests/futex: Convert 32-bit timespec to 64-bit version for 32-bit compatibility mode


 tools/testing/selftests/futex/include/futex2test.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/futex/include/futex2test.h b/tools/testing/selftests/futex/include/futex2test.h
index ea79662405bc..1f625b39948a 100644
--- a/tools/testing/selftests/futex/include/futex2test.h
+++ b/tools/testing/selftests/futex/include/futex2test.h
@@ -4,6 +4,7 @@
  *
  * Copyright 2021 Collabora Ltd.
  */
+#include <linux/time_types.h>
 #include <stdint.h>
 
 #define u64_to_ptr(x) ((void *)(uintptr_t)(x))
@@ -65,7 +66,12 @@ struct futex32_numa {
 static inline int futex_waitv(volatile struct futex_waitv *waiters, unsigned long nr_waiters,
 			      unsigned long flags, struct timespec *timo, clockid_t clockid)
 {
-	return syscall(__NR_futex_waitv, waiters, nr_waiters, flags, timo, clockid);
+		struct __kernel_timespec ts = {
+			.tv_sec = timo->tv_sec,
+			.tv_nsec = timo->tv_nsec,
+		};
+
+		return syscall(__NR_futex_waitv, waiters, nr_waiters, flags, &ts, clockid);
 }
 
 /*