Running into a SIGTRAP, backtrace shows only main(), apparently happening in libgloss/arm/crt0.S

[daten]

I'm using SDK v16 on an nRF52832 and occasionally run into a SIGTRAP with my custom application mainly forwarding BLE traffic from/to UART.

It works fine, only after quite a few interactions (can be 3 can be 30) - initiated by a BLE UART client running on Android - it stops being responsive.

Attached debugger (Black Magic Probe) provides me with the following output:

Starting program: /data/src/nrf5x-sdk-vanilla/projects/[..]/s132/armgcc/_build/nrf52832_xxaa.out

Program received signal SIGTRAP, Trace/breakpoint trap.
warning: while parsing target memory map (at line 1): Required element <memory> is missing
0x0002be5c in main ()
(gdb) l
1    ../../../../../../../../../libgloss/arm/crt0.S: No such file or directory.
(gdb) bt
#0  0x0002be5c in main ()
(gdb)

I'd be happy for any hint or idea. I could think of this being a arbitrary memory corruption. However I'm wondering about the SIGTRAP (not SEGV), libgloss/arm/crt0.S (no user code), as well as consistently ending up in this very state.

[daten]

Hardware is an nRF52832.

I now ordered a PCA10040 and will then try to reproduce. Can you elaborate on why you think this might be hardware specific?

[run_ar]

Sorry for the late reply, Just back from vacation.

 

daten said:

Hardware is an nRF52832.

 Ok, so custom board then I suppose. I do not necessarily think it is a hardware issue, but it could be related to clock source/timing. Asking in case we would like to try to recreate the issue here.