Problems with L2 on samples/net/echo_client and nrf52_pca10040

Flavio Arieta <flavioarieta@...>


I'm having some problems with the echo_client sample while using my nrf52 pca10040.

From what I understood of the problem is that net_if_get_ll_reserve called from net_ipv6_send_nscrashes because of iface->l2->reserve (no function attached to it maybe?).

The project configuration is the default prj_nrf5.conf and no modifications where made on the code apart from some extras debug messages.

Since I haven't changed anything from the configuration and project that could generate this error I'm very confused.

Steps to reproduce the problem:
1. make pristine 
2. make CONF_FILE=prj_nrf5.conf BOARD=nrf52_pca10040
3. program the board.

Serial output (I can't access pastebin from here, sorry):
[net/core] [DBG] net_init: (0x2000691c): Priority 90
[net/core] [DBG] l2_init: (0x2000691c): Network L2 init done
[net/core] [DBG] l3_init: (0x2000691c): Network L3 init done
[net/core] [DBG] net_rx_thread: (0x2000229c): Starting RX thread (stack 2048 bytes)
[net/if] [DBG] net_if_init: (0x2000229c): 
[net/if] [DBG] net_if_tx_thread: (0x20002a9c): Starting TX thread (stack 2048 bytes)
[net/if] [DBG] net_if_post_init: (0x2000229c): 
shell> [echo-client] [INF] init_app: Run echo client
[net/if] [DBG] net_if_ipv6_start_dad: (0x2000691c): Interface 0x20000900 ll addr 34:80:04:F0:07:FA tentative IPv6 addr 2001:db8::1
***** BUS FAULT *****
  Executing thread ID (thread): 0x2000691c
  Faulting instruction address:  0x6b6360
  Instruction bus error
Fatal fault in essential thread! Spinning...

I'm new to Zephyr, so I can lack basic knowledge while configurating the project and with the Zephyr RTOS structure and data flow.

Flávio Arieta Netto.

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