Can't insmod on 19.07

[ykzj]

I get a travel router Nexx 3020F(https://openwrt.org/toh/hwdata/nexx/nexx_wt3020f). With openwrt 19.07, I download ko file from http://nossiac.com/download/mtk-wifi-ko/mt7620-for-mt7620-linux-4.14.167.ko. When I try to insmod, I get following error messages from logread:

Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.179418] mt7620: Unknown symbol alloc_etherdev_mqs (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.179490] mt7620: Unknown symbol filp_open (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.179580] mt7620: Unknown symbol simple_strtol (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.179640] mt7620: Unknown symbol unregister_netdev (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.179713] mt7620: Unknown symbol remove_proc_subtree (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.179776] mt7620: Unknown symbol kthread_should_stop (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.179902] mt7620: Unknown symbol pci_read_config_dword (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.179973] mt7620: Unknown symbol init_task (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180040] mt7620: Unknown symbol pci_find_capability (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180100] mt7620: Unknown symbol strcat (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180157] mt7620: Unknown symbol synchronize_irq (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180227] mt7620: Unknown symbol strstr (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180295] mt7620: Unknown symbol pci_read_config_word (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180359] mt7620: Unknown symbol register_netdev (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180425] mt7620: Unknown symbol kthread_stop (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180492] mt7620: Unknown symbol proc_mkdir (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180554] mt7620: Unknown symbol kernel_read (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180632] mt7620: Unknown symbol kthread_create_on_node (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180705] mt7620: Unknown symbol filp_close (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180783] mt7620: Unknown symbol send_sig (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180840] mt7620: Unknown symbol strspn (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180908] mt7620: Unknown symbol pci_write_config_word (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.180974] mt7620: Unknown symbol pci_write_config_dword (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.181035] mt7620: Unknown symbol kernel_write (err 0)
Sat Mar 7 11:52:13 2020 kern.warn kernel: [ 227.181094] mt7620: Unknown symbol strpbrk (err 0)

[ykzj]

on 18.06.7

root@OpenWrt:# lsmod | grep -i mt
root@OpenWrt:# modinfo mt7620
module: /lib/modules/4.14.167/mt7620.ko
depends:
root@OpenWrt:~# modprobe mt7620
1 module could not be probed

• mt7620

logread output:

Wed Jan 29 16:08:29 2020 kern.warn kernel: [ 98.369001] mt7620: module license 'unspecified' taints kernel.
Wed Jan 29 16:08:29 2020 kern.warn kernel: [ 98.380836] Disabling lock debugging due to kernel taint
Wed Jan 29 16:08:29 2020 kern.warn kernel: [ 98.417778] mt7620: Unknown symbol __check_object_size (err 0)