Corpus for fchdir:
Coverage Program
146 seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-syz_open_procfs-fchdir
107 prctl$PR_SET_SYSCALL_USER_DISPATCH_ON-openat$bsg-fchdir
105 perf_event_open-openat$bsg-fchdir-creat-ioctl$sock_SIOCETHTOOL-socket$nl_xfrm-perf_event_open-pwritev2-syz_mount_image$msdos-write$binfmt_elf64
89 openat$bsg-close_range-openat$pidfd-fchdir
30 socketpair$unix-fchdir
19 fchdir