[Fedora-directory-users] glibc errors

[Richard Megginson]

Bjorn Oglefjorn wrote:
> 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.
This sounds like a problem with pam_ldap or nss_ldap.  You might want to 
report this on a CentOS list.  If you are a Red Hat customer, you can 
report it through your usual support channel.  I don't think this is a 
directory server problem.
>
> 1) With 66 users in the massweb group
>
> [root at megalon ~]# getent group massweb
> *** glibc detected *** free(): invalid next size (normal): 0x09a225b0 ***
> Aborted
>
>
> 2) After removing any user from the massweb group to reduce the total 
> members to 65
>
> [root at megalon ~]# getent group massweb
> massweb:x:3016:afaxon,ashairza,ccrump,jhorowit,mmarum,morendai,usmall,adroffne,afaxon,amurphre,aoliver,ayellipe,bdonohue,bdunn,beckert,blarsen,bwphilli,catanis,ccrump,chaynes,clyons,cwong,dbarber,dmuse,dnicol,edougher,egallant,ekubosia,evizcain,feeddrop,gtulonen,halokush,hbraverm,jbartus,jbrown,jhobbs,jking,jlederma,jpecora,jthayer,kbalbedi,kbeam,kginn,mbuonfig,mcrawfor,mlarsen,mlong,mwalsh,osedano,proche,prondeau,pweinber,rhorriga,rkersey,rskutins,sasaro,sbrodeur,sculver,smoriart,support,swestenh,tbaltimo,torgelfi,usmall,vvalenti 
>
>
> Has anyone encountered a similar problem? Any suggestions would be 
> most welcome.
>
> Best regards
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>
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