On 14/7/2010 11:42 πμ, Reko Turja wrote:
I have a problem: ldapsearch results in "Segmentation fault" under
openldap-2.4.23 with cyrus-sasl-2.1.23
A thread for similar issues was started by George Mamalakis back in
february:
http://lists.freebsd.org/pipermail/freebsd-stable/2010-February/055017.html
but I find no solution / conclusion from this thread, hence I post
here...
I have installed FreeBSD 8.0-RELEASE-p2 on i386, updated with
freebsd-update, and ports updated with "portsnap fetch update".
Kerberos installed from packages, configured, and seems to work OK.
I had similar issue with 8-RELEASE and cyrus-sasl2 with
cyrus-saslauthd linked against system kerberos.
(uname -a xxx.xxx.xxx 8.0-RELEASE-p3 FreeBSD 8.0-RELEASE-p3 #1: Sat
Jun 12 00:39:22 EEST 2010 r...@xxx.xxx.xxx:/usr/obj/usr/src/sys/WWW i386)
The problem manifested itself with pretty much the same backtrace when
using cyradm tool for administering cyrus mailboxes and due time
constraints I solved my issue by removing all the gssapi plugin libs
from /usr/local/lib/sasl2, so my solution isn't really applicable in
your case.
my /etc/hosts file for the server in question contains only localhost
entry + entry for one IP so George's solution didnt help with my problem.
/var/log/messages has:
slapd[1146]: OTP unavailable because can't read/write key database
/etc/opiekeys: Permission denied
kernel: pid 53862 (ldapsearch), uid 1001: exited on signal 11 (core
dumped)
The first message is from the LDAP server. Even if it has some
problem, it should not lead the client to segfault.
I agree.
If I was to build a test box from scratch, can you tell me how to set up
all the necessary software/etc. to mimic your environment so that I
could try to reproduce this? Reviewing the source isn't enough, I'd
have to actually build a debug version of libgssapi to track it down.
Alternatively I can try to step you through how to debug this using gdb,
but again, lack of debugging symbols makes this annoying.
I'd say that based on present evidence there is something broken in
gssapi/sasl interaction, but due my need of getting the server
functional quickly I didn't dig much further in the issue myself,
although I really don't know how to enable generating debugging
symbols for ports either - Which was another reason for not digging
deeper in the problem.
I wonder if using dovecot-sasl would work with ldap and if it has the
same issue as cyrus-sasl - athough it doesn't seem to be available as
separate port.
-Reko
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Hello guys,
I am glad that somebody brought this issue back, since despite my last
email regarding the same issue on 25/02/2010 saying that there must be
something wrong with the function gss_release_buffer(void *a, void *b),
the issue got forgotten. The problem would not persist in amd64, so I
stopped looking it further myself. Whoever wants to see more information
on this issue, search the subject field of this list for: openldap
client GSSAPI authentication segfaults in fbsd8stable i386
I hope that a remedy to this issue will be yielded this time.
--
George Mamalakis
IT Officer
Electrical and Computer Engineer (Aristotle Un. of Thessaloniki),
MSc (Imperial College of London)
Department of Electrical and Computer Engineering
Faculty of Engineering
Aristotle University of Thessaloniki
phone number : +30 (2310) 994379
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