CentOS - Sep 2015 - Update from 6.6 to 6.7 > automount logs error message

On Mon, Aug 17, 2015 at 8:39 AM, Phelps, Matthew <mphelps at
cfa.harvard.edu>
wrote:
>
>
> On Tue, Aug 11, 2015 at 10:55 AM, Ralf Aum?ller <
> Ralf.Aumueller at informatik.uni-stuttgart.de> wrote:
>
>> Hello,
>>
>> after an update from 6.6 to 6.7 the following error message is logged
to
>> /var/log/messages when I login (per ssh):
>>
>> Aug 11 16:31:21 a1234 automount[1598]: set_tsd_user_vars: failed to get
>> passwd
>> info from getpwuid_r
>>
>> Checked all log-files of my systems running 6.6 with same configuration
>> -- never
>> got such a message (We use NFS/autofs for home-directories, NIS and
tcsh
>> (login
>> shell)).
>>
>> Everything seems to work -- but before I update all machines to 6.7 I
>> want to
>> know whats going on.
>>
>> Any comments?
>>
>> Best regards,
>> Ralf
>> _______________________________________________
>> CentOS mailing list
>> CentOS at centos.org
>> http://lists.centos.org/mailman/listinfo/centos
>>
>
>
> I am seeing the same issue.
>
> Any ideas anyone?
>
>
>
To answer the original question, RedHat Engineering is looking into it.
>From https://access.redhat.com/solutions/1573693 (subscription required):


"Issue

After an update to RHEL6.7 the following error shows up in logfile
/var/log/messages:

automount[60432]: set_tsd_user_vars: failed to get passwd info from
getpwuid_r


Environment

Red Hat Enterprise Linux 6.7


Resolution

The issue is currently under investigation by Red Hat Engineering. In case
you encounter the problem in your environment, please open a ticket with
Red Hat Global Support."






-- 
Matt Phelps
System Administrator, Computation Facility
Harvard - Smithsonian Center for Astrophysics
mphelps at cfa.harvard.edu, http://www.cfa.harvard.edu

Hello,
>>> after an update from 6.6 to 6.7 the following error message is
logged to
>>> /var/log/messages when I login (per ssh):
>>>
>>> Aug 11 16:31:21 a1234 automount[1598]: set_tsd_user_vars: failed to
get
>>> passwd info from getpwuid_r
Did some more tests:

Compiled autofs with logging of UID/GID in autofs-function
"set_tsd_user_vars".
Just before the error is logged, autofs tries to get password info for e.g. UID
409651584 and GID 4294936577 (witch don't exist). Then error message is
logged.

A fully updated 6.7 system running latest 6.6 kernel
(2.6.32-504.30.3.el6.x86_64) won't print the error message. I checked the
changelog of kernel 2.6.32-573.3.1.el6.x86_64 and found some autofs patches
since version 504.30.3.

But I can't test an further because the kernel-srpm didn't include
single
patches anymore.

Maybe someone with deeper kernel knowledge has an idea?

Best regards,
Ralf

On Fri, Sep 4, 2015 at 5:28 AM, Ralf Aum?ller <
Ralf.Aumueller at informatik.uni-stuttgart.de> wrote:
> Hello,
>
> >>> after an update from 6.6 to 6.7 the following error message is
logged
> to
> >>> /var/log/messages when I login (per ssh):
> >>>
> >>> Aug 11 16:31:21 a1234 automount[1598]: set_tsd_user_vars:
failed to get
> >>> passwd info from getpwuid_r
>
> Did some more tests:
>
> Compiled autofs with logging of UID/GID in autofs-function
> "set_tsd_user_vars".
> Just before the error is logged, autofs tries to get password info for
> e.g. UID
> 409651584 and GID 4294936577 (witch don't exist). Then error message is
> logged.
>
> A fully updated 6.7 system running latest 6.6 kernel
> (2.6.32-504.30.3.el6.x86_64) won't print the error message. I checked
the
> changelog of kernel 2.6.32-573.3.1.el6.x86_64 and found some autofs patches
> since version 504.30.3.
>
> But I can't test an further because the kernel-srpm didn't include
single
> patches anymore.
>
> Maybe someone with deeper kernel knowledge has an idea?
>
> Best regards,
> Ralf
>

It looks like the latest kernel release fixes this issue:

CentOS pushed the kernel update last night (CEBA-2015:1827 CentOS 6 kernel
BugFix Update). I've tested it on a machine that logged the error every
time we ran a certain cron job, and so far the errors are no longer
appearing.


 From the RedHat advisory at
https://rhn.redhat.com/errata/RHBA-2015-1827.html :

* When logging in as a user and trying to mount a share using the "cd"
command,
the UID and GID autofs additional variables previously took incorrect
values,
taking root UID and GID instead of user's UID and GID. The bug in the
assignment
of uid and gid mount requests has been fixed, and UID and GID now get the
correct values with autofs configuration on Red Hat Enterprise Linux 6.7.
(BZ#1258581)

-Matt