[riot-users] gnrc_border_router example on a pba-d-01-kw2x board

Axl Schreiber axl.schreiber at imms.de
Thu Apr 21 16:51:19 CEST 2016

Hey Kaspar,

I did  "arm-none-eabi-objdump -S bin/pba-d-01-kw2x/gnrc_border_router.elf".

I think this is the relevant part of the output:

static void _receive(gnrc_pktsnip_t *pkt)
     3194:       e92d 47f0       stmdb   sp!, {r4, r5, r6, r7, r8, r9, 
sl, lr}
     kernel_pid_t iface = KERNEL_PID_UNDEF;
     gnrc_pktsnip_t *ipv6, *netif, *first_ext;
     ipv6_hdr_t *hdr;

     assert(pkt != NULL);
     3198:       4604            mov     r4, r0
     319a:       b918            cbnz    r0, 31a4 <_receive+0x10>
     319c:       2003            movs    r0, #3
     319e:       494e            ldr     r1, [pc, #312]  ; (32d8 
     31a0:       f7fd f97a       bl      498 <core_panic>

     netif = gnrc_pktsnip_search_type(pkt, GNRC_NETTYPE_NETIF);
     31a4:       f04f 31ff       mov.w   r1, #4294967295
     31a8:       f002 fce0       bl      5b6c <gnrc_pktsnip_search_type>

     31ac:       2800            cmp     r0, #0
     31ae:       d0f5            beq.n   319c <_receive+0x8>
     iface = ((gnrc_netif_hdr_t *)netif->data)->if_pid;
     31b0:       6883            ldr     r3, [r0, #8]
     31b2:       885e            ldrh    r6, [r3, #2]
     31b4:       46a0            mov     r8, r4
     31b6:       4625            mov     r5, r4

     first_ext = pkt;

Can I do something else?


Am 21.04.2016 um 10:43 schrieb Kaspar Schleiser:
> Hey Axl,
> On 04/21/2016 10:00 AM, Axl Schreiber wrote:
>> 0x31a5
>> *** RIOT kernel panic:
> Did you check where it chrashed (0x31a5)? Try to find the address in
> objdump out ("BOARD=<board> make info-objdump").
>> I thinkit should be possible to run thegnrc_border_router example ofthe
>> latest RIOT version from GitHub on a pba‑d‑01‑kw2xboard successfully.
> Definitely. If you reproducably crash your board, it would actually be
> nice to find out which change is responsible.
> Kaspar
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