On 18 Sep 2018, at 15.15, Simone Lazzaris <s.lazzaris@interactive.eu> wrote:

I've got a core dump, and here is the backtrace. Let me know if you want the core file.

It would be useful if we're able to use it. Could you use https://dovecot.org/tools/core-tar.sh to send the core and the related binaries (e.g. just email to me)? The usage is explained at the beginning of the script. At least in theory we could then debug with the core file, although I've had some trouble even then.

But just in case the core doesn't work, could you also do:

bt full
fr 8
p *((struct doveadm_connection *)io->context)
p *((struct doveadm_connection *)io->context)->input