Hi All, After rolling out LDAP and upgrading to kernel 2.6.10 we noticed programs were failing in a manner similar to this:
[EMAIL PROTECTED]:~$ su - Password: su: pthread_mutex_lock.c:78: __pthread_mutex_lock: Assertion `mutex->__data.__owner == 0' failed. Aborted [EMAIL PROTECTED]:~$ This only happens for local users su'ing to other local users, changing their passwords or logging in. Unfortunately we cannot find consistency to the failures. Some things work where they don't on other machines. If we remove ldap from /etc/nsswitch.conf then everything works fine (except for LDAP lookups, obviously). There are people reporting similar issues, see these posts: http://lists.debian.org/debian-devel/2005/04/msg00304.html http://article.gmane.org/gmane.comp.ldap.padl.nss/35 Generally, the solutions we have found are: * Remove NPTL libraries from the system, eg. mv /lib/tls /lib/tls.old (not a solution to use on production boxes). * Downgrade libnss_ldap to version 220 (not ideal but we are going with this for now). * Upgrade glibc on the effected machines to 2.3.5, we got the idea from looking at the following output: Debian Sarge Machine -------------------- machine1:~# getconf GNU_LIBPTHREAD_VERSION NPTL 0.60 machine1:~# Fedora Core 3 ------------- [EMAIL PROTECTED] ~]# getconf GNU_LIBPTHREAD_VERSION NPTL 2.3.5 [EMAIL PROTECTED] ~]# I am not sure what the different versions mean exactly, but it seems that going from version 0.60 to 2.3.5 is a large jump. However, I suspecct that NPTL may have had a version re-numbering to be consistent with the libc version it is built for, can someone confirm? * Compiling libnss-ldap to not link to libpthread.so. When I used "apt-get source libnss-ldap", the source tarball gets patched with the file libnss-ldap_238-1.diff.gz. This causes libnss_ldap.so to use libpthread.so. If I use the un-modified source tarball then it does not link to this library and so everything works. * Using LD_ASSUME_KERNEL=2.4.19 What we would like to know, is there a "proper" fix for this so that we can use the latest package available in Sarge and use NPTL? Many many thanks, Fred. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
