Corpus for tgkill:

Coverage	Program
2167	openat-perf_event_open-ioctl$LOOP_SET_FD-ioctl$AUTOFS_DEV_IOCTL_CATATONIC-perf_event_open-creat-dup2-getpgrp-ioctl$F2FS_IOC_PRECACHE_EXTENTS-ioctl$EXT4_IOC_SWAP_BOOT-tgkill-timerfd_create-socket$inet6_icmp_raw
2011	perf_event_open-syz_io_uring_setup-socket$inet6_icmp_raw-socket$inet6_tcp-setsockopt$inet6_tcp_TCP_MD5SIG-tgkill-openat-write$binfmt_elf64-close-perf_event_open-ioctl$TIOCGPTPEER-pread64-ioctl$BTRFS_IOC_BALANCE_V2-ioctl$BTRFS_IOC_DEV_INFO-ioctl$sock_inet6_SIOCSIFADDR-syz_io_uring_submit-mmap$IORING_OFF_SQ_RING-mmap$IORING_OFF_CQ_RING-syz_io_uring_submit-io_uring_enter
1243	perf_event_open-getpgrp-tgkill
673	seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-getpgid-gettid-tgkill
172	getpgrp-perf_event_open-getpgrp-tgkill
131	perf_event_open-gettid-tgkill
90	gettid-seccomp$SECCOMP_SET_MODE_STRICT-tgkill