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

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

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
>

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
>>