linux-yocto/arch/arc
Simon Schuster e0d6fb7923 arch: copy_thread: pass clone_flags as u64
[ Upstream commit bbc46b23af ]

With the introduction of clone3 in commit 7f192e3cd3 ("fork: add
clone3") the effective bit width of clone_flags on all architectures was
increased from 32-bit to 64-bit, with a new type of u64 for the flags.
However, for most consumers of clone_flags the interface was not
changed from the previous type of unsigned long.

While this works fine as long as none of the new 64-bit flag bits
(CLONE_CLEAR_SIGHAND and CLONE_INTO_CGROUP) are evaluated, this is still
undesirable in terms of the principle of least surprise.

Thus, this commit fixes all relevant interfaces of the copy_thread
function that is called from copy_process to consistently pass
clone_flags as u64, so that no truncation to 32-bit integers occurs on
32-bit architectures.

Signed-off-by: Simon Schuster <schuster.simon@siemens-energy.com>
Link: https://lore.kernel.org/20250901-nios2-implement-clone3-v2-3-53fcf5577d57@siemens-energy.com
Fixes: c5febea095 ("fork: Pass struct kernel_clone_args into copy_thread")
Acked-by: Guo Ren (Alibaba Damo Academy) <guoren@kernel.org>
Acked-by: Andreas Larsson <andreas@gaisler.com> # sparc
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-10-15 12:03:13 +02:00
..
boot ARC: migrate to the generic rule for built-in DTB 2025-01-18 08:52:09 +09:00
configs ARC: migrate to the generic rule for built-in DTB 2025-01-18 08:52:09 +09:00
include ARC fixes for 6.16 2025-06-12 08:17:56 -07:00
kernel arch: copy_thread: pass clone_flags as u64 2025-10-15 12:03:13 +02:00
lib
mm arch, mm: make releasing of memory to page allocator more explicit 2025-03-17 22:06:53 -07:00
net ARC: bpf: Correct conditional check in 'check_jmp_32' 2024-12-10 10:12:56 -08:00
plat-axs10x
plat-hsdk
plat-sim
plat-tb10x
Kbuild
Kconfig Kbuild updates for v6.14 2025-01-31 12:07:07 -08:00
Kconfig.debug
Makefile ARC: migrate to the generic rule for built-in DTB 2025-01-18 08:52:09 +09:00