Per-task monitors use a slot in the task_struct->rv[] array and store
that locally (e.g. task_mon_slot), this slot is returned during the
destruction process but currently hanlers can be running while that slot
is returning and this race may lead to accessing an invalid slot.
Synchronise with all in-flight tracepoint handlers using
tracepoint_synchronize_unregister() before returning the slot.
Fixes: f5587d1b6e ("rv: Add Hybrid Automata monitor type")
Fixes: a9769a5b98 ("rv: Add support for LTL monitors")
Suggested-by: Wen Yang <wen.yang@linux.dev>
Reviewed-by: Nam Cao <namcao@linutronix.de>
Link: https://lore.kernel.org/r/20260601153840.124372-4-gmonaco@redhat.com
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
Pull copy_process updates from Christian Brauner:
"This contains the changes to enable support for clone3() on nios2
which apparently is still a thing.
The more exciting part of this is that it cleans up the inconsistency
in how the 64-bit flag argument is passed from copy_process() into the
various other copy_*() helpers"
[ Fixed up rv ltl_monitor 32-bit support as per Sasha Levin in the merge ]
* tag 'kernel-6.18-rc1.clone3' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
nios2: implement architecture-specific portion of sys_clone3
arch: copy_thread: pass clone_flags as u64
copy_process: pass clone_flags as u64 across calltree
copy_sighand: Handle architectures where sizeof(unsigned long) < sizeof(u64)
