On 01/12/2020 16:47, John Fawcett wrote:

On 30/11/2020 09:45, Manuel Josupeit-Walter wrote:

...

Hi all,

I am running a mail server for family and friends based on Dovecot and Docker. Today I made a weird observation which I must have overlooked for a long time so far because they logs were written to the journal. However, I am usually only investigating the Docker logs.

It seems that some e-mail indexing leads to segfaults and it seems to be related only with Solr and Tika. I have auto-indexing turned on so sometimes the indexer-worker crashes when moving mails from one folder to the other or searching for mails otherwise. Also, if I try to manually reindex using doveadm index, the doveadm process quits with a segfault.

I am always running the most recent Dovecot version, in this case 2.3.11.3, but I am not neccessarily up-to-date with Solr or Tika. I am on Solr Version 7.4 and Tika 1.24.1. On the console I am receiving Tika errors and on the Solr Webinterface I see a couple of Ealry EOFs as well.

I am not a Linux expert from a dev perspective, but it seems to me that the client (Dovecot) closes the connection prematurely.

Does anyone have a hint? I am happy to provide more information if required. I need to know how to collect them, though.

Best, Manuel

A fix was posted on this list which seems to avoid segfaults when using solr+tika. I reposted it not long ago in response to another question. Before exploring the other segfaults it would be worthwhile getting that fix. If other segfaults continue then I suggest posting the logging from Dovecot

https://github.com/dovecot/core/commit/043d111cea78533cf22d3bfe0872c8376d842... (DOV-4090)

Scheduled for 2.3.13.

Regards,

Stephan.