AC85P, AP+STA hostapd do_page_fault(), snapshot

Hi, long time openwrt user new to the forum here

Recently I bought a Asus AC85P as my personal router seeing that it was supported by snapshot releases

Everything seem working fine (not tested thoroughly yet) but i'm having problems running the 2.4Gh interface (MT7615N) in AP+STA Mode

It initially connect to my external AP (correct key exchange) but after a second the wireless connection freeze and crash

When this happen on the syslog there are this error:
(Tried with different wpad version ad hostapd vesrsions, always same result)

wpad:

kern.info kernel: [  162.841073] do_page_fault(): sending SIGSEGV to hostapd for invalid read access from 00000000
kern.info kernel: [  162.858461] epc = 55680ec1 in wpad[555bd000+f3000]
kern.info kernel: [  162.868106] ra  = 55681017 in wpad[555bd000+f3000]

hostapd + wpa_client:

kern.info kernel: [  126.297448] do_page_fault(): sending SIGSEGV to hostapd for invalid read access from 00000000
kern.info kernel: [  126.330859] epc = 556a92d5 in hostapd[55632000+98000]
kern.info kernel: [  126.341058] ra  = 556a942b in hostapd[55632000+98000]

I'm running SNAPSHOT r14616-7f8a1fc55e (2020-10-01T22:00:00Z)

I really need this feature and being my personal router I'm open for testing and helping to develop and add this device to supported ones

Thanks,
Luca

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