ChibiOS Free Embedded RTOS

I use the following construction:
int main(void)
{
halInit();
chSysInit();
...
chThdCreateStatic(network_wa, sizeof(network_wa), NORMALPRIO, network_thread, NULL);
chThdExit(0); // include chSysLock(); but not chSysUnlock(); (dbg_lock_cnt=1)
while (1){}
}
static WORKING_AREA ...

I'll try enable DBG (all DBG options - TRUE), and now I have an error at the start.
int main (void) - performed well.
First start network_thread, and start initialization.
Successfully comes to function chEvtRegister (& per_evt.et_es, & per_el, EVID_NET_PERIODIC); but during this execution ...
void ...

Greetings to all!
I have recently been using ChibiOS, and now I have to develop a project that unites: STM32F103 + ChibiOS + uIP + ENC28J60 (Ethernet module).
STM32F103C8T6 controller and compiler Keil.
I'm using some code Josef Gajdusek (atalax) of m
What is working:
SPI communication with ENC28J60 ...