dovecot - Aug 2018 - Dovecot User Listing Error - getpwent() failed: Invalid Argument

I think this might be caused by glibc 2.28.  I saw a similar error with
the "doveadm purge" command after upgrading my system to that version.

Michael Marley 

On 2018-08-31 13:10, Aki Tuomi wrote:
> I'll see if this is reproducible 
> 
> --- 
> Aki Tuomi 
> Dovecot oy 
> 
> -------- Original message -------- 
> From: Reuben Farrelly <reuben-dovecot at reub.net> 
> Date: 31/08/2018 17:41 (GMT+02:00) 
> To: Aki Tuomi <aki.tuomi at dovecot.fi>, Dovecot Mailing List
<dovecot at dovecot.org>
> Subject: Re: Dovecot User Listing Error - getpwent() failed: Invalid
Argument
> Sure:
> 
> https://www.reub.net/files/dovecot/lightning-dovecot.conf
> https://www.reub.net/files/dovecot/thunderstorm-dovecot.conf
> 
> Updated nightly.
> 
> Reuben
> 
> On 1/09/2018 12:26 am, Aki Tuomi wrote:
>> Can you provide doveconf -n?
>> 
>> 
>> 
>> ---
>> Aki Tuomi
>> Dovecot oy
>> 
>> -------- Original message --------
>> From: Reuben Farrelly <reuben-dovecot at reub.net>
>> Date: 31/08/2018 17:12 (GMT+02:00)
>> To: Aki Tuomi <aki.tuomi at dovecot.fi>, Dovecot Mailing List 
>> <dovecot at dovecot.org>
>> Subject: Re: Dovecot User Listing Error - getpwent() failed: Invalid 
>> Argument
>> 
>> No.  Neither of those are installed on either system.
>> 
>> Reuben
>> 
>> On 1/09/2018 12:09 am, Aki Tuomi wrote:
>>> Could apparmor or selinux be causing this!
>>>
>>>
>>>
>>> ---
>>> Aki Tuomi
>>> Dovecot oy
>>>
>>> -------- Original message --------
>>> From: Reuben Farrelly <reuben-dovecot at reub.net>
>>> Date: 31/08/2018 16:50 (GMT+02:00)
>>> To: Dovecot Mailing List <dovecot at dovecot.org>
>>> Subject: Dovecot User Listing Error - getpwent() failed: Invalid
Argument
>>>
>>> Hi,
>>>
>>> I'm running dovecot-2.3 git and seeing on 2 of my Dovecot
installations,
>>> the following message logged quite frequently:
>>>
>>> Aug 31 16:55:53 lightning.reub.net dovecot[7698]:
auth-worker(7707):
>>> Error: getpwent() failed: Invalid argument
>>> Aug 31 16:55:53 lightning.reub.net dovecot[7698]: replicator:
Error:
>>> User listing returned failure
>>> Aug 31 16:55:53 lightning.reub.net dovecot[7698]: replicator:
Error:
>>> listing users failed, can't replicate existing data
>>>
>>> It appears that this could be having an effect on replication, but
it's
>>> unclear because the secondary/replica doesn't see much traffic.
>>>
>>> Authentication is via PAM and the system is Gentoo Linux x86_64.
passb
>>> driver = pam, userdb driver = static .
>>>
>>> doveadm user -u '*' shows the system users listed twice
like this (is
>>> this a problem?) and then prints:
>>>
>>> ----
>>> reuben
>>> liam
>>> reuben
>>> liam
>>> <some other users>
>>> Error: User listing returned failure
>>> Fatal: user listing failed
>>> ----
>>>
>>> To me that doesn't look right.
>>>
>>> Can anyone suggest what could be causing this?  I don't recall
seeing
>>> this message some time ago so I suspect it's a recent change in
either
>>> dovecot, or pam or glibc etc..
>>>
>>> Thanks,
>>> Reuben
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Ah. Thanks for the pointer.
---Aki TuomiDovecot oy
-------- Original message --------From: Michael Marley <michael at
michaelmarley.com> Date: 31/08/2018  21:17  (GMT+02:00) To: dovecot at
dovecot.org Subject: Re: Dovecot User Listing Error - getpwent() failed: Invalid
Argument

I think this might be caused by glibc 2.28.? I saw a similar error with the
"doveadm purge" command after upgrading my system to that version.
Michael Marley
On 2018-08-31 13:10, Aki Tuomi wrote:

I'll see if this is reproducible
?
?
?
---
Aki Tuomi
Dovecot oy

?

-------- Original message --------
From: Reuben Farrelly <reuben-dovecot at reub.net>
Date: 31/08/2018 17:41 (GMT+02:00)
To: Aki Tuomi <aki.tuomi at dovecot.fi>, Dovecot Mailing List <dovecot
at dovecot.org>
Subject: Re: Dovecot User Listing Error - getpwent() failed: Invalid Argument
?

Sure:

https://www.reub.net/files/dovecot/lightning-dovecot.conf
https://www.reub.net/files/dovecot/thunderstorm-dovecot.conf

Updated nightly.

Reuben


On 1/09/2018 12:26 am, Aki Tuomi wrote:
> Can you provide doveconf -n?
> 
> 
> 
> ---
> Aki Tuomi
> Dovecot oy
> 
> -------- Original message --------
> From: Reuben Farrelly <reuben-dovecot at reub.net>
> Date: 31/08/2018 17:12 (GMT+02:00)
> To: Aki Tuomi <aki.tuomi at dovecot.fi>, Dovecot Mailing List 
> <dovecot at dovecot.org>
> Subject: Re: Dovecot User Listing Error - getpwent() failed: Invalid 
> Argument
> 
> No.? Neither of those are installed on either system.
> 
> Reuben
> 
> On 1/09/2018 12:09 am, Aki Tuomi wrote:
>? > Could apparmor or selinux be causing this!
>? >
>? >
>? >
>? > ---
>? > Aki Tuomi
>? > Dovecot oy
>? >
>? > -------- Original message --------
>? > From: Reuben Farrelly <reuben-dovecot at reub.net>
>? > Date: 31/08/2018 16:50 (GMT+02:00)
>? > To: Dovecot Mailing List <dovecot at dovecot.org>
>? > Subject: Dovecot User Listing Error - getpwent() failed: Invalid
Argument
>? >
>? > Hi,
>? >
>? > I'm running dovecot-2.3 git and seeing on 2 of my Dovecot
installations,
>? > the following message logged quite frequently:
>? >
>? > Aug 31 16:55:53 lightning.reub.net dovecot[7698]: auth-worker(7707):
>? > Error: getpwent() failed: Invalid argument
>? > Aug 31 16:55:53 lightning.reub.net dovecot[7698]: replicator: Error:
>? > User listing returned failure
>? > Aug 31 16:55:53 lightning.reub.net dovecot[7698]: replicator: Error:
>? > listing users failed, can't replicate existing data
>? >
>? > It appears that this could be having an effect on replication, but
it's
>? > unclear because the secondary/replica doesn't see much traffic.
>? >
>? > Authentication is via PAM and the system is Gentoo Linux x86_64.
passb
>? > driver = pam, userdb driver = static .
>? >
>? > doveadm user -u '*' shows the system users listed twice like
this (is
>? > this a problem?) and then prints:
>? >
>? > ----
>? > reuben
>? > liam
>? > reuben
>? > liam
>? > <some other users>
>? > Error: User listing returned failure
>? > Fatal: user listing failed
>? > ----
>? >
>? > To me that doesn't look right.
>? >
>? > Can anyone suggest what could be causing this?? I don't recall
seeing
>? > this message some time ago so I suspect it's a recent change in
either
>? > dovecot, or pam or glibc etc..
>? >
>? > Thanks,
>? > Reuben


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