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. GPG Key Fingerprint = 0666 D0D3 24CE 8935 9C24 BBF1 87DD BEA2 A4B2 1E8A
