Corpus for pkey_alloc:

Coverage	Program
2412	mlock2-perf_event_open-pkey_alloc-pkey_mprotect-pkey_mprotect-mbind-pkey_mprotect-pkey_free-pkey_mprotect-pkey_mprotect-creat-pkey_mprotect-fallocate
1964	mremap-perf_event_open-pkey_alloc-pkey_mprotect-pkey_mprotect-mbind-pkey_mprotect-pkey_mprotect-pkey_mprotect-pkey_free-gettid-pkey_mprotect-rt_tgsigqueueinfo-perf_event_open-creat-fallocate
1100	perf_event_open-pkey_alloc
530	seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-pkey_alloc
76	perf_event_open-pkey_alloc