Corpus for setpgid:

Coverage	Program
1341	syz_emit_ethernet-syz_emit_ethernet-mlock2-perf_event_open-gettid-setpgid-perf_event_open-ptrace-openat$tun-syz_emit_ethernet-openat$tun-ioctl$TUNSETQUEUE-mlock-perf_event_open-mmap$usbmon-ptrace$getenv-recvfrom-ioctl$FS_IOC_FSSETXATTR
951	seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-setpgid
456	perf_event_open-setpgid-openat$sr-ioctl$CDROM_SELECT_SPEED-readv
328	openat$sysfs-mq_open-openat$sr-socket$unix-fcntl$setown-fcntl$getownex-ioctl$BTRFS_IOC_SCRUB_PROGRESS-openat$urandom-ioctl$BTRFS_IOC_SCRUB-setpgid-open_tree-perf_event_open-write$bt_hci
168	perf_event_open-setpgid
168	perf_event_open-setpgid
168	perf_event_open-setpgid
134	fork-setpgid
71	socket$unix-fcntl$setown-fcntl$getownex-setpgid
54	setpgid