Dovecot+Solr+Tika segmentation fault

[Stephan Bosch]

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/043d111cea78533cf22d3bfe0872c8376d842f56 
(DOV-4090)

Scheduled for 2.3.13.

Regards,

Stephan.