linux/include/trace
Simon Schuster edd3cb05c0 copy_process: pass clone_flags as u64 across calltree
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 callees to
sys_clone3/copy_process (excluding the architecture-specific
copy_thread) 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-v2-2-53fcf5577d57@siemens-energy.com
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-09-01 15:31:34 +02:00
..
events copy_process: pass clone_flags as u64 across calltree 2025-09-01 15:31:34 +02:00
misc nfsd: add a tracepoint for nfsd_setattr 2025-05-11 19:48:30 -04:00
stages tracing: Add __print_dynamic_array() helper 2024-10-30 17:24:32 +01:00
bpf_probe.h tracepoint: Have tracepoints created with DECLARE_TRACE() have _tp suffix 2025-05-14 11:19:32 -04:00
define_custom_trace.h
define_trace.h tracepoint: Have tracepoints created with DECLARE_TRACE() have _tp suffix 2025-05-14 11:19:32 -04:00
perf.h tracing/perf: Add might_fault check to syscall probes 2024-10-09 17:09:46 -04:00
syscall.h
trace_custom_events.h tracing: Rename the staging files for trace_events 2022-04-02 08:40:04 -04:00
trace_events.h tracing/ftrace: Add might_fault check to syscall probes 2024-10-09 17:09:36 -04:00