Corpus for openat$tun:

Coverage	Program
3878	mknod$loop-perf_event_open-mmap-creat-syz_open_dev$rtc-openat$tun-ioctl$BLKTRACESETUP
2546	openat-perf_event_open-ftruncate-openat$ptmx-ioctl$TIOCGPTPEER-dup3-write$binfmt_elf64-readv-write$binfmt_elf64-fcntl$setflags-openat$sysfs-openat$cgroup_procs-openat$tun-setsockopt$SO_ATTACH_FILTER-sendmsg$NL80211_CMD_GET_WIPHY-fcntl$setpipe
2397	perf_event_open-socket$netlink-open_tree-perf_event_open-socket$netlink-sendmsg$nl_generic-syz_genetlink_get_family_id$tipc2-sendmsg$TIPC_NL_BEARER_GET-sendmsg$TIPC_NL_MON_GET-sendmsg$nl_generic-openat$tun-ioctl$TUNSETVNETBE
719	openat$tun
672	openat$tun-openat$tun