syz_mount_image$nfs4(0x0, &(0x7f00000010c0)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) r0 = open$dir(&(0x7f0000000080)='./file0\x00', 0x0, 0x0) open_by_handle_at(r0, &(0x7f0000000000)=@ceph_nfs_confh={0x10, 0x2, {0xb}}, 0x0)