Corpus for accept4:

Coverage	Program
2157	syz_init_net_socket$802154_dgram-accept4
986	perf_event_open-perf_event_open-syz_open_procfs-pread64-socketpair$unix-accept4-fcntl$setpipe-dup3-pipe2-ioctl$BTRFS_IOC_SCRUB_CANCEL-ioctl$sock_SIOCETHTOOL-openat-socket$nl_generic-ioctl$BTRFS_IOC_ADD_DEV-syz_genetlink_get_family_id$ethtool-getsockopt$sock_cred-ioctl$sock_ipv6_tunnel_SIOCADDPRL-ioctl$sock_ipv6_tunnel_SIOCCHGPRL-getsockopt$inet_IP_XFRM_POLICY
559	syz_init_net_socket$bt_sco-accept4
437	socket$unix-bind$unix-listen-socket$unix-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-connect$unix-accept4
408	socket$unix-bind$unix-listen-socket$unix-connect$unix-close_range-accept4
309	socket$inet_tcp-listen-accept4