(ITS#8046) query caused slapd to stop

[whm@stanford.edu]

Full_Name: Bill MacAllister
Version: 2.4.40
OS: Debian Wheezy
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (171.64.19.165)


I have a perl script that uses Net::LDAPapi to report data from our OpenLDAP
servers.  I have used the script on an off for years.  This morning I created a
new report this morning that is causing slapd on the servers to core dump.  When
I do the same query using ldapsearch the query returns normally.

Here is a backtrace from one of the failures.

directory5:/root# gdb /usr/sbin/slapd /tmp/core.7494 
GNU gdb (GDB) 7.4.1-debian
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/sbin/slapd...Reading symbols from
/usr/lib/debug/.build-id/82/9f04799686f98a3973283686c94f80c0f4d601.debug...done.
done.
[New LWP 7497]
[New LWP 7496]
[New LWP 7495]
[New LWP 7494]

warning: Can't read pathname for load map: Input/output error.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gn2F2Flibthread_db.so.1".
Core was generated by `/usr/sbin/slapd -h ldap:/// ldaps:/// -F
/etc/ldap/slapd.d/'.
Program terminated with signal 6, Aborted.
#0  0x00007ffec956f165 in raise () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) thr apply all bt

Thread 4 (Thread 0x7ffecbeac720 (LWP 7494)):
#0  0x00007ffec98d0ee5 in pthread_join () from
/lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffecb801254 in ldap_pvt_thread_join (thread=140646313764608,
thread_return=0x0) at ../../../../libraries/libldap_r/thr_posix.c:197
#2  0x00007ffecbf0a21c in slapd_daemon () at
../../../../servers/slapd/daemon.c:2929
#3  0x00007ffecbee41dd in main (argc=5, argv=0x7fff8738bda8) at
../../../../servers/slapd/main.c:1012

Thread 3 (Thread 0x7feac5922700 (PWP 7495)):
#0  0x00007ffec9619d63 in epoll_wait () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffecbf08dd9 in slapd_daemon_task (ptr=0x7ffecd2a98b8) at
../../../../servers/slapd/daemon.c:2536
#2  0x00007ffec98cfb50 in start_thread () from
/lib/x86_64-linux-gnu/libpthread.so.0
#3  0x00007ffec961970d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7feac5121700 (LWP 7496)):
#0  0x00007ffec98d4344 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffecb801313 in ldap_pvt_thread_cond_wait (cond=0x7ffecd294030,
mutex=0x7ffecd294008) at ../../../../libraries/libldap_r/thr_posix.c:277
#2  0x00007ffecb7ffc51 in ldap_int_thread_pool_wrapper (xpool=0x7ffecd294000) at
../../../../libraries/libldap_r/tpool.c:675
#3  0x00007ffec98cfb50 in start_thread () from
/lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007ffec961970d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7feac4920700 (LWP 7497)):
#0  0x00007ffec956f165 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffec95723e0 in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007ffecba631fc in tcmalloc::Log(tcmalloc::LogMode, char const*, int,
tcmalloc::gIgItem, tcmalloc::LogItem, tcmalloc::LogItem, tcmalloc::LogItem) ()
   from /usr/lib/libtcmalloc_minimal.so.4
#3  0x00007ffecba5f733 in ?? () from /usr/lib/libtcmalloc_minimal.so.4
#4  0x00007ffecba6dd90 in tc_free () from /usr/lib/libtcmalloc_minimal.so.4
#5  0x00007ffecb5e4d01 in ber_memfree_x (p=0x38, ctx=0x0) at
../../../../libraries/liblber/memory.c:152
#6  0x00007ffecbf8b575 in slap_sl_free (ptr=0x38, ctx=0x7ffecd334880) at
../../../../servers/slapd/sl_malloc.c:502
#7  0x00007ffecbf15c0e in vrFilter_free (op=0x7ffecd317800, vrf=0x7ffecf6a45f0)
at ../../../../servers/slapd/filter.c:1187
#8  0x00007ffecbf516ca in slap_free_ctrls (op=0x7ffecd317800,
ctrls=0x7ffecf6a4580) at ../../../../servers/slapd/controls.c:574
#9  0x00007ffecbf2a31d in slap_op_free (op=0x7ffecd317800, ctx=0x7feac491fbb0)
at ../../../../servers/slapd/operation.c:98
#10 0x00007ffecbf0dbd8 in connection_operation (ctx=0x7feac491fbb0,
arg_v=0x7ffecd317800) at ../../../../servers/slapd/connection.c:1212
#11 0x00007ffecbf0de95 in connection_read_thread (ctx=0x7feac491fbb0, argv=0xf)
at ../../../../servers/slapd/connection.c:1291
#12 0x00007ffecb7ffd2b in ldap_int_thread_pool_wrapper (xpool=0x7ffecd294000) at
../../../../libraries/libldap_r/tpool.c:688
#13 0x00007ffec98cfb50 in start_thread () from
/lib/x86_64-linux-gnu/libpthread.so.0
#14 0x00007ffec961970d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#15 0x0000000000000000 in ?? ()