RPI gateway (GPIO) - Segmentation fault

[bilbolodz]

I've playing with OTA using MYSController. I've noticed that sometime after OTA node upgrade or "reboot" command from MYSController node has problem with connecting to controller and finally gateway process on RPI got "Segmentation fault" and dies. Restarting gateway process won't fix it (still seg faults). Only way to get GW running is physical NODE reset.
My hardware is: RPI3 and NRF24L01+PA, decent power supply, Mysensors 2.1.1 (git clone from https://github.com/mysensors/MySensors.git). Without "OTA"/reset GW is running stable. Any ideas? I've already opened issue on github.

Logs from GW:

mysgw: Starting gateway...
mysgw: Protocol version - 2.1.1
mysgw: MCO:BGN:INIT GW,CP=RNNG-SQ,VER=2.1.1
mysgw: TSF:LRT:OK
mysgw: TSM:INIT
mysgw: TSF:WUR:MS=0
mysgw: TSM:INIT:TSP OK
mysgw: TSM:INIT:GW MODE
mysgw: TSM:READY:ID=0,PAR=0,DIS=0
mysgw: MCO:REG:NOT NEEDED
mysgw: Listening for connections on 0.0.0.0:5003
mysgw: MCO:BGN:STP
mysgw: MCO:BGN:INIT OK,TSP=1
mysgw: TSF:MSG:READ,1-1-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=1
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: !TSF:MSG:SEND,0-0-1-1,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=NACK:0
mysgw: TSF:MSG:READ,1-1-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=1
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: TSF:MSG:SEND,0-0-1-1,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
mysgw: TSF:MSG:READ,1-1-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=1
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: TSF:MSG:SEND,0-0-1-1,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
mysgw: TSF:MSG:READ,1-1-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=1
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: TSF:MSG:SEND,0-0-1-1,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
mysgw: TSF:MSG:READ,1-1-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=1
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: TSF:MSG:SEND,0-0-1-1,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
mysgw: TSF:MSG:READ,1-1-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=1
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: !TSF:MSG:SEND,0-0-1-1,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=NACK:0
mysgw: TSF:MSG:READ,1-1-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=1
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
mysgw: !TSF:MSG:SEND,0-0-1-1,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=NACK:0
mysgw: TSF:MSG:READ,1-1-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
mysgw: TSF:MSG:BC
mysgw: TSF:MSG:FPAR REQ,ID=1
mysgw: TSF:CKU:OK,FCTRL
mysgw: TSF:MSG:GWL OK
Segmentation fault