CentOS - Feb 2008 - Dovecot on CentOS5 - (login) returned error 127

Running CentOS Linux 5 with sendmail-procmail putting email in 
/var/spool/mail.  I'm running pop3 only with the servers configured to 
authenticate with ldap (which is configured and running OK).  I do have 
this same configuration on an older FC6 box and it works fine.  I'm 
thinking I just need to upgrade dovecot given all the nss_ldap problems 
it has had, but I hate not using RPM packages and CentOS does not have 
upgraded packages.

Hardware is Dell PowerEdge 1900 (64bit) with 2G RAM.  Hopefully I'm 
doing something stupid and there's an easy fix for the packages and 
configuration I have.

I'm seeing the following in the /var/log/maillog when I run dovecot.  
When I log in via telnet, I get the connection, but it never responds 
when I enter a user.

Feb 21 15:41:20 cartman dovecot: Dovecot v1.0.rc15 starting up
Feb 21 15:41:21 cartman dovecot: Temporary failure in creating login processes,
slowing down for now
Feb 21 15:41:21 cartman dovecot: pop3-login: pop3-login: error while loading
shared libraries: libsepol.so.1: failed to map segment from shared object:
Cannot allocate memory
Feb 21 15:41:21 cartman dovecot: pop3-login: pop3-login: error while loading
shared libraries: libsepol.so.1: failed to map segment from shared object:
Cannot allocate memory
Feb 21 15:41:21 cartman dovecot: child 4445 (login) returned error 127
Feb 21 15:41:21 cartman dovecot: child 4446 (login) returned error 127
Feb 21 15:41:21 cartman dovecot: pop3-login: pop3-login: error while loading
shared libraries: libsepol.so.1: failed to map segment from shared object:
Cannot allocate memory
Feb 21 15:41:21 cartman dovecot: child 4447 (login) returned error 127
Feb 21 15:42:21 cartman dovecot: pop3-login: pop3-login: error while loading
shared libraries: libsepol.so.1: failed to map segment from shared object:
Cannot allocate memory
Feb 21 15:42:21 cartman dovecot: pop3-login: pop3-login: error while loading
shared libraries: libsepol.so.1: failed to map segment from shared object:
Cannot allocate memory
Feb 21 15:42:21 cartman dovecot: child 4465 (login) returned error 127
Feb 21 15:42:21 cartman dovecot: child 4466 (login) returned error 127
Feb 21 15:42:21 cartman dovecot: pop3-login: pop3-login: error while loading
shared libraries: libsepol.so.1: failed to map segment from shared object:
Cannot allocate memory
Feb 21 15:42:21 cartman dovecot: child 4467 (login) returned error 127
Feb 21 15:43:21 cartman dovecot: pop3-login: pop3-login: error while loading
shared libraries: libsepol.so.1: failed to map segment from shared object:
Cannot allocate memory
Feb 21 15:43:21 cartman last message repeated 2 times
Feb 21 15:43:21 cartman dovecot: child 4469 (login) returned error 127
Feb 21 15:43:21 cartman dovecot: child 4470 (login) returned error 127
Feb 21 15:43:21 cartman dovecot: child 4471 (login) returned error 127
Feb 21 15:43:59 cartman dovecot: Killed with signal 15

Dovecot details are as follows:

*> dovecot --version*
1.0.rc15
*> dovecot -n*
# /etc/dovecot.conf
protocols: pop3
listen: *
login_dir: /var/run/dovecot/login
login_executable: /usr/libexec/dovecot/pop3-login
mail_executable: /usr/libexec/dovecot/pop3
mail_plugin_dir: /usr/lib64/dovecot/pop3
pop3_client_workarounds: outlook-no-nuls oe-ns-eoh
auth default:
  passdb:
    driver: pam
    args: dovecot
  userdb:
    driver: passwd
    args: blocking=yes


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on 2/21/2008 3:56 PM Tim Alberts spake the following:
> Running CentOS Linux 5 with sendmail-procmail putting email in 
> /var/spool/mail.  I'm running pop3 only with the servers configured to 
> authenticate with ldap (which is configured and running OK).  I do have 
> this same configuration on an older FC6 box and it works fine.  I'm 
> thinking I just need to upgrade dovecot given all the nss_ldap problems 
> it has had, but I hate not using RPM packages and CentOS does not have 
> upgraded packages.
> 
> Hardware is Dell PowerEdge 1900 (64bit) with 2G RAM.  Hopefully I'm 
> doing something stupid and there's an easy fix for the packages and 
> configuration I have.
> 
> I'm seeing the following in the /var/log/maillog when I run dovecot.  
> When I log in via telnet, I get the connection, but it never responds 
> when I enter a user.
> 
> Feb 21 15:41:20 cartman dovecot: Dovecot v1.0.rc15 starting up
> Feb 21 15:41:21 cartman dovecot: Temporary failure in creating login
processes, slowing down for now
> Feb 21 15:41:21 cartman dovecot: pop3-login: pop3-login: error while
loading shared libraries: libsepol.so.1: failed to map segment from shared
object: Cannot allocate memory
> Feb 21 15:41:21 cartman dovecot: pop3-login: pop3-login: error while
loading shared libraries: libsepol.so.1: failed to map segment from shared
object: Cannot allocate memory
> Feb 21 15:41:21 cartman dovecot: child 4445 (login) returned error 127
> Feb 21 15:41:21 cartman dovecot: child 4446 (login) returned error 127
> Feb 21 15:41:21 cartman dovecot: pop3-login: pop3-login: error while
loading shared libraries: libsepol.so.1: failed to map segment from shared
object: Cannot allocate memory
> Feb 21 15:41:21 cartman dovecot: child 4447 (login) returned error 127
> Feb 21 15:42:21 cartman dovecot: pop3-login: pop3-login: error while
loading shared libraries: libsepol.so.1: failed to map segment from shared
object: Cannot allocate memory
> Feb 21 15:42:21 cartman dovecot: pop3-login: pop3-login: error while
loading shared libraries: libsepol.so.1: failed to map segment from shared
object: Cannot allocate memory
> Feb 21 15:42:21 cartman dovecot: child 4465 (login) returned error 127
> Feb 21 15:42:21 cartman dovecot: child 4466 (login) returned error 127
> Feb 21 15:42:21 cartman dovecot: pop3-login: pop3-login: error while
loading shared libraries: libsepol.so.1: failed to map segment from shared
object: Cannot allocate memory
> Feb 21 15:42:21 cartman dovecot: child 4467 (login) returned error 127
> Feb 21 15:43:21 cartman dovecot: pop3-login: pop3-login: error while
loading shared libraries: libsepol.so.1: failed to map segment from shared
object: Cannot allocate memory
> Feb 21 15:43:21 cartman last message repeated 2 times
> Feb 21 15:43:21 cartman dovecot: child 4469 (login) returned error 127
> Feb 21 15:43:21 cartman dovecot: child 4470 (login) returned error 127
> Feb 21 15:43:21 cartman dovecot: child 4471 (login) returned error 127
> Feb 21 15:43:59 cartman dovecot: Killed with signal 15
> 
> Dovecot details are as follows:
> 
> *> dovecot --version*
> 1.0.rc15
> *> dovecot -n*
> # /etc/dovecot.conf
> protocols: pop3
> listen: *
> login_dir: /var/run/dovecot/login
> login_executable: /usr/libexec/dovecot/pop3-login
> mail_executable: /usr/libexec/dovecot/pop3
> mail_plugin_dir: /usr/lib64/dovecot/pop3
> pop3_client_workarounds: outlook-no-nuls oe-ns-eoh
> auth default:
>   passdb:
>     driver: pam
>     args: dovecot
>   userdb:
>     driver: passwd
>     args: blocking=yes
> 
You can download 1.0.10 rpm from www.atrpms.net

-- 
MailScanner is like deodorant...
You hope everybody uses it, and
you notice quickly if they don't!!!!

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Tim Alberts wrote:
> Feb 21 15:41:21 cartman dovecot: pop3-login: pop3-login: error while
loading shared libraries: libsepol.so.1: failed to map segment from shared
object: Cannot allocate memory
>   
this is a wild guess, and should be taken with a grain or three of salt.

you might try increasing kernel parameter shmmax.   this is in 
/etc/sysctl.conf, or can be manually set for experimentation with sysctl(8)

Fixed, upgraded to 1.0.10 from rpm at www.atrpms.net and running now.  
Thank you for your support.

Tim Alberts wrote:
> Running CentOS Linux 5 with sendmail-procmail putting email in 
> Feb 21 15:41:20 cartman dovecot: Dovecot v1.0.rc15 starting up
> Feb 21 15:41:21 cartman dovecot: Temporary failure in creating login
processes, slowing down for now
That is stated in the *RELEASE NOTES*, which you really should read >:)

| The Dovecot package on x86_64 kernels requires the parameter
| "login_process_size = 64" to be added to /etc/dovecot.conf after an
| upgrade to CentOS 5.1.

Cheers,

Ralph
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