Error when searching in mailfolders

[Aki Tuomi]

On 30.06.2016 10:38, Christoph Pleger wrote:
> Hello,
>
>> On 29 Jun 2016, at 16:40, Christoph Pleger <Christoph at plmail.de> wrote:
>>> Hello,
>>>
>>> I just found that with my dovecot 2.2.21, when I use squirrelmail to
>>> search for something in my mailfolders, that fails with
>>>
>>> ERROR: Connection dropped by IMAP server.
>>> Query: SEARCH CHARSET ISO-8859-1 ALL FROM "someone"
>>>
>>> That happens for searches in any folder, except from INBOX. When I
>>> search
>>> in all folders, only results from INBOX are found, then the error
>>> message
>>> is shown.
>>>
>>> The log says:
>>>
>>> imap: Error: terminate called after throwing an instance of
>>> 'CLuceneError'
>>>
>>> imap(christoph): Fatal: master: service(imap): child 2834 killed with
>>> signal 6 (core dumps disabled)
>>>
>>> What can I do about that?
>> Lucene library is throwing an error, which crashes Dovecot. Maybe Dovecot
>> should catch the error, but it would still be broken. Try deleting the
>> lucene indexes and rebuilding them?
> Deleting the indexes helped, but after they had been rebuilt, the error
> occurred again.
>
> Regards
>   Christoph

Could you enable core dumps and run bt full in gdb?

Aki