disagrees about version of symbol module_layout

when i try to build a customized kernel module, i got this error when i do modprobe.

i used to success this way with 6.4.0 and before.

kernel src is from ReadyNASOS_V6.4.2_WW_src.zip

the .config is from linux-4.1.16-armada/arch/arm/configs/readynas_defconfig

here is my modification for .config

CONFIG_LOCALVERSION=".armada.1"

CONFIG_USB_SERIAL_PL2303=m

compiling is success.

the vermagic seems to be the same as official modules

$modinfo pl2303 |grep vermagic 

vermagic:       4.1.16.armada.1 SMP mod_unload modversions ARMv7 p2v8

i find the readynas_defconfig is for x86, so where to find a defconfig file for arm with kernel ver 4.1.16?

tried readynas_armada370_defconfig in rnos 4.0, not work too.