Corpus for fchmodat:

Coverage	Program
4545	syz_mount_image$tmpfs-mknodat$loop-fchmodat-execveat
4307	perf_event_open-openat-close-openat-write-close-openat-write$binfmt_script-close-fchmodat-execveat
2798	syz_mount_image$tmpfs-symlinkat-newfstatat-setresuid-openat$dir-mkdirat-fchmodat
1373	syz_mount_image$tmpfs-mknodat$loop-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-fchmodat
1062	syz_mount_image$tmpfs-symlinkat-stat-syz_mount_image$tmpfs-newfstatat-setresuid-openat$dir-dup-fstat-newfstatat-setuid-ioctl$AUTOFS_DEV_IOCTL_REQUESTER-syz_mount_image$iso9660-mkdirat-fchmodat
840	prctl$PR_SET_SYSCALL_USER_DISPATCH_ON-syz_mount_image$ext4-fchmodat
331	syz_mount_image$tmpfs-fchmodat
286	fchmodat