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

[Reuben Farrelly]

I've been running with this almost identical patch already for some time:

diff -up dovecot-2.3.0.1/src/auth/mycrypt.c.libxcrypt 
dovecot-2.3.0.1/src/auth/mycrypt.c
--- dovecot-2.3.0.1/src/auth/mycrypt.c.libxcrypt       2018-02-28 
15:28:58.000000000 +0100
+++ dovecot-2.3.0.1/src/auth/mycrypt.c 2018-03-27 10:57:38.447769201 +0200
@@ -14,6 +14,7 @@
  #  define _XPG6 /* Some Solaris versions require this, some break with 
this */
  #endif
  #include <unistd.h>
+#include <crypt.h>

  #include "mycrypt.h"

That fixed the build problem I had, but the warning below remains.

(Tracking master-2.3 git)

Reuben


On 19/09/2018 5:34 pm, Aki Tuomi wrote:
> This is bit of a longshot, but can you try applying
> https://github.com/dovecot/core/commit/63a74b9.patch and see if this helps?
> 
> Aki
> 
> 
> On 19.09.2018 10:33, Reuben Farrelly wrote:
>> glibc-2.28.
>>
>> There was a posting by Michael Marley on 31/08 saying he saw something
>> similar to this problem after upgrading to 2.28 as well with 'doveadm
>> purge'.
>>
>> Reuben
>>
>> On 19/09/2018 4:50 pm, Aki Tuomi wrote:
>>> Which glibc version are you using?
>>>
>>> Aki
>>>
>>> On 19.09.2018 09:39, Reuben Farrelly wrote:
>>>> Hi Aki,
>>>>
>>>> How did you go with this in the end?  Do you need anything more from
>>>> me or were you able to reproduce this?
>>>>
>>>> Thanks,
>>>> Reuben
>>>>
>>>> On 1/09/2018 12:41 am, Reuben Farrelly wrote:
>>>>> 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
>>>
>