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

19 Sep 2018

I have no idea why it's returning invalid argument, maybe you need to
raise this as issue with glibc?

Aki


On 19.09.2018 10:43, Reuben Farrelly wrote:
...
Sure:
thunderstorm ~ # cat /etc/nsswitch.conf
# /etc/nsswitch.conf:
# $Header:
/var/cvsroot/gentoo/src/patchsets/glibc/extra/etc/nsswitch.conf,v 1.2
2017/08/12 16:21:44 slyfox Exp $
passwd:      compat files
shadow:      compat files
group:       compat files
hosts:       files dns
networks:    files dns
services:    db files
protocols:   db files
rpc:         db files
ethers:      db files
netmasks:    files
netgroup:    files
bootparams:  files
automount:   files
aliases:     files
thunderstorm ~ #
Reuben
On 19/09/2018 5:41 pm, Aki Tuomi wrote:
...
Can you provide your /etc/nssswitch.conf?
Aki
On 19.09.2018 10:40, Reuben Farrelly wrote:
...
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 
+#include 
  #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 
>>> Date: 31/08/2018 17:12 (GMT+02:00)
>>> To: Aki Tuomi , Dovecot Mailing List
>>> 
>>> 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 
>>>     > Date: 31/08/2018 16:50 (GMT+02:00)
>>>     > To: Dovecot Mailing List 
>>>     > 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

    