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

?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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