[Fedora-directory-users] glibc errors

[Wilmer Jaramillo M.]

2007/9/27, Bjorn Oglefjorn <sys.mailing at gmail.com>:
> I am trying to track down the cause of some errors that have been occurring
> on a number of our servers using LDAP. We have noticed that when a certain
> LDAP group exceeds 65 users we begin seeing glibc errors for users in the
> group. Users that are not in the group do not exhibit this behavior.
>
> We have seen this issue on machines running Centos 4.5 x86 & x86_64 with
> glibc-2.3.4-2.36 and RH4 x86_64 running glibc-2.3.4-2.25. We are running
> Fedora Directory Server 1.0.4 on Centos 4.5. We have added a 3rd FDS slave
> and turned up debugging but have not seen anything that appears to be
> relevant in the logs on the 3rd slave.
>
> This problem is not a 65 user limit as we have other groups with well over
> 65 members that do not display this behavior. We also created a new group
> with identical users and it did not display this problem.
>
> 1) With 66 users in the massweb group
>
> [root at megalon ~]# getent group massweb
> *** glibc detected *** free(): invalid next size (normal): 0x09a225b0 ***
> Aborted

You should disable the GLIBC internal sanity via MALLOC_CHECK_
environment variable with a zero(0) value. The RHEL4 Release Notes
show how do that, check glibc section for more information:
http://www.red-hat.com/docs/manuals/enterprise/RHEL-4-Manual/release-notes/ws-x86/



-- 
Wilmer Jaramillo M.
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