Corpus for process_mrelease:

Coverage	Program
611	perf_event_open-getpid-pidfd_open-process_mrelease
136	perf_event_open-getpid-pidfd_open-process_mrelease
73	perf_event_open-process_mrelease-openat$pidfd
28	prctl$PR_SET_SYSCALL_USER_DISPATCH_ON-process_mrelease
9	process_mrelease