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In our installation slapd will crash with a Segmentation Fault about
once a week. It has been seen on the producer while the consumers
connect but also on both producer and consumers at random. It seems to
be related to authentication with GSSAPI.

syslog produces the followig message:
kernel: [513493.152760] slapd[1610]: segfault at 7fb242df9000 ip 00007fb242ad7122 sp 00007fb127ffd900 error 4 in libcrypto.so.0.9.8[7fb242a61000+168000]

gdb:
Core was generated by usr/sbin/slapd -d 0 -h ldap:/// ldaps:/// -f /local/sukat/conf/slapd.conf'.  Program terminated with signal 11, Segmentation fault.
#0  sha1_block_data_order () at sha1-x86_64.s:133
133     sha1-x86_64.s: No such file or directory.
        in sha1-x86_64.s
(gdb) bt
#0  sha1_block_data_order () at sha1-x86_64.s:133
#1  0x0000005e17000000 in ?? ()
#2  0x0000000017000000 in ?? ()
#3  0x0000000000000000 in ?? ()

The backtrace is incomplete as the debug packages are broken. Trying to reproduce this bug I trigger another segfault. I will file reports on thease issues in
 separate tickets.

ProblemType: Bug 
Architecture: amd64
Date: Wed Jan 25 11:13:22 2012
Dependencies:
 adduser 3.112ubuntu1
 base-files 5.0.0ubuntu20.10.04.4
 base-passwd 3.5.22
 coreutils 7.4-2ubuntu3
 debconf 1.5.28ubuntu4
 debconf-i18n 1.5.28ubuntu4
 debianutils 3.2.2
 dpkg 1.15.5.6ubuntu4.5 [modified: sbin/start-stop-daemon]
 findutils 4.4.2-1ubuntu1
 gcc-4.4-base 4.4.3-4ubuntu5
 libacl1 2.2.49-2
 libattr1 1:2.4.44-1
 libbz2-1.0 1.0.5-4ubuntu0.2
 libc-bin 2.11.1-0ubuntu7.8
 libc6 2.11.1-0ubuntu7.8
 libcomerr2 1.41.11-1ubuntu2.1
 libdb4.7 4.7.25-9
 libdb4.8 4.8.24-1ubuntu1
 libgcc1 1:4.4.3-4ubuntu5
 libgcrypt11 1.4.4-5ubuntu2
 libgdbm3 1.8.3-9
 libgnutls26 2.8.5-2
 libgpg-error0 1.6-1ubuntu2
 libgssapi-krb5-2 1.8.1+dfsg-2ubuntu0.10
 libk5crypto3 1.8.1+dfsg-2ubuntu0.10
 libkeyutils1 1.2-12
 libkrb5-3 1.8.1+dfsg-2ubuntu0.10
 libkrb5support0 1.8.1+dfsg-2ubuntu0.10
 libldap-2.4-2 2.4.21-0ubuntu5.6
 liblocale-gettext-perl 1.05-6
 libltdl7 2.2.6b-2ubuntu1
 libncurses5 5.7+20090803-2ubuntu3
 libpam-modules 1.1.1-2ubuntu5.4
 libpam0g 1.1.1-2ubuntu5.4
 libperl5.10 5.10.1-8ubuntu2.1
 libreadline6 6.1-1
 libsasl2-2 2.1.23.dfsg1-5ubuntu1
 libselinux1 2.0.89-4
 libslp1 1.2.1-7.6ubuntu0.1
 libstdc++6 4.4.3-4ubuntu5
 libtasn1-3 2.4-1
 libtext-charwidth-perl 0.04-6
 libtext-iconv-perl 1.7-2
 libtext-wrapi18n-perl 0.06-7
 libwrap0 7.6.q-18
 lzma 4.43-14ubuntu2
 odbcinst 2.2.11-21
 odbcinst1debian1 2.2.11-21
 passwd 1:4.1.4.2-1ubuntu2.2
 perl 5.10.1-8ubuntu2.1
 perl-base 5.10.1-8ubuntu2.1
 perl-modules 5.10.1-8ubuntu2.1
 psmisc 22.10-1
 readline-common 6.1-1
 sensible-utils 0.0.1ubuntu3
 tzdata 2011n-0ubuntu0.10.04
 unixodbc 2.2.11-21
 zlib1g 1:1.2.3.3.dfsg-15ubuntu1
DistroRelease: Ubuntu 10.04
NonfreeKernelModules: openafs
Package: slapd 2.4.21-0ubuntu5.6
PackageArchitecture: amd64
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 LC_CTYPE=en_GB.UTF-8
ProcVersionSignature: Ubuntu 2.6.32-37.81-generic 2.6.32.49+drm33.21
SourcePackage: openldap
Tags: lucid
Uname: Linux 2.6.32-37-generic x86_64

** Affects: openldap (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Segmentation fault in slapd (related to GSSAPI?)
https://bugs.launchpad.net/bugs/921489
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