72786ff23d5a ("posix-timers: Set k_itimer:: It_signal to NULL on exit()")
9d9e522010eb ("posix-timers: Prevent RT livelock in itimer_delete()")
d5b36a4dbd06 ("fix race between exit_itimers() and /proc/pid/timers")
153ffb6ba49f ("exec: Move cleanup of posix timers on exec out of de_thread")
021691559245 ("exec: Factor unshare_sighand out of de_thread and call it separately")
7586addb9932 ("posix-timers: Use spin_lock_irq() in itimer_delete()")
d036bda7d0e7 ("sched/core: Convert sighand_struct.count to refcount_t")