Segfault dovecot 2.2.9

Simon Gareste simon.gareste at
Mon Jul 28 10:33:44 UTC 2014

Le 28/07/2014 12:14, Reindl Harald a écrit :
> Am 28.07.2014 09:44, schrieb Simon Gareste:
>> When trying to set up dovecot, I somehow managed to get a segfault. Trying to launch dovecot from command line
>> (simply execute 'dovecot') results in the error message:
>> Segmentation fault (core dumped)
>> Trying dovecot -n results in pretty much the same:
>> # 2.2.9: /etc/dovecot/dovecot.conf
>> Segmentation fault (core dumped)
>> Looking at syslog, I see
>> doveconf[3676]: segfault at 200 ip 00007fbb93c4fcb3 sp 00007fff005b4c10 error 4 in[7fbb93c04000+1bc000]
> current is 2.2.13
> so don't report problems with a outdated version instead
> just upgrade - there where bugfixes between 2.2.9 and
> 2.2.13 in context of segfaults here and there
Thank you. This outdated version is the one packaged in Ubuntu LTS 
14.04.1, which I believe I'm not the only one using. Updating the 
dovecot packages provided by Ubuntu would certainly help. I understand 
that the version I'm using is roughly 9 months old, but then the LTS was 
released 3 months ago, why doesn't it include the 2.2.11 or 2.2.12?

And I found the solution in the end, the problem comes from 
auth_debug_passwords=yes being the right thing, and 
auth_debug_passwords=plain being source of segfault. I don't know where 
I got the "plain" value in the first place, but I certainly should have 
read more carefully some docs. I also don't know if this was fixed 
later, but shouldn't there be a verification on some values of some 
variables, when there are limited values to which they can be defined?

Anyway, dovecot is running, all my apologizes for the unwanted spam.


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