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

[Aki Tuomi]

 Reuben, could you try this:

service auth-worker {
  executable = /usr/bin/strace -o /tmp/out /usr/libexec/dovecot/auth -w
}

and send the out file to me? I wasn't able to reproduce your problem
with glibc-2.28.

Aki

On 31.08.2018 21:30, Aki Tuomi wrote:
> Ah. Thanks for the pointer.
>
> ---
> Aki Tuomi
> Dovecot 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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