Re: Kernel showing segfaults in motorPoller.

[Ralph Lange via Tech-talk <tech-talk at aps.anl.gov>]

On Thu, 26 Jan 2023 at 19:02, Marco A. Barra Montevechi Filho via Tech-talk <tech-talk at aps.anl.gov> wrote:

We are experimenting several segfaults with motor IOCs here. Behavior is unpredictable, but i suspect common cause.

Any tips on how to debug this?

Get core dumps.

Most probably it's enough to set the core file size before running your IOC:

$ ulimit -c unlimited

You can always check the current limit with 'ulimit -a'.

Then load the core file into gdb and have a look.

Cheers,
~Ralph