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RE: SLAPD Crashing due to search (ITS#1840)

To: openldap-its@OpenLDAP.org
Subject: RE: SLAPD Crashing due to search (ITS#1840)
From: gthomas@netstarnetworks.com
Date: Wed, 5 Jun 2002 10:27:28 GMT
Hi Again,
	In advance....thanks Kervin for you help thus far...once again,
I learn...

	I've managed to recompile 2.0.23 without stripped symbols, using
the rpm --rebuild option...

[root@opt tmp]#file /usr/sbin/slapd
/usr/sbin/slapd: ELF 32-bit LSB executable, Intel 80386, version 1
(SYSV), dynamically linked (uses shared libs), not stripped

and I hope my attempts at driving GDB have produced some sort of useful
stack trace. You can see from below that I was not sure which commands
to use, so I tried a few....

BTW...if you run slapd as the user ldap (as per Redhat Default), it
doesn't create a core file, even if the ldap user has the appropriate
rights to the current/working directory....anyhow, it does when run as
root.

Regards
Garry

[root@opt tmp]# gdb /usr/sbin/slapd core.16729 
GNU gdb Red Hat Linux (5.1.90CVS-5)
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
details.
This GDB was configured as "i386-redhat-linux"...
Core was generated by `/usr/sbin/slapd'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/libsasl.so.7...done.
Loaded symbols for /usr/lib/libsasl.so.7
Reading symbols from /usr/lib/libgdbm.so.2...done.
Loaded symbols for /usr/lib/libgdbm.so.2
Reading symbols from /lib/libpam.so.0...done.
Loaded symbols for /lib/libpam.so.0
Reading symbols from /usr/kerberos/lib/libkrb5.so.3...done.
Loaded symbols for /usr/kerberos/lib/libkrb5.so.3
Reading symbols from /usr/kerberos/lib/libk5crypto.so.3...done.
Loaded symbols for /usr/kerberos/lib/libk5crypto.so.3
Reading symbols from /usr/kerberos/lib/libcom_err.so.3...done.
Loaded symbols for /usr/kerberos/lib/libcom_err.so.3
Reading symbols from /lib/libssl.so.2...done.
Loaded symbols for /lib/libssl.so.2
Reading symbols from /lib/libcrypto.so.2...done.
Loaded symbols for /lib/libcrypto.so.2
Reading symbols from /lib/libcrypt.so.1...done.
Loaded symbols for /lib/libcrypt.so.1
Reading symbols from /lib/libnsl.so.1...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/libresolv.so.2...done.
Loaded symbols for /lib/libresolv.so.2
Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/i686/libpthread.so.0...done.
Loaded symbols for /lib/i686/libpthread.so.0
Reading symbols from /lib/i686/libc.so.6...done.
Loaded symbols for /lib/i686/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/libnss_files.so.2...done.
Loaded symbols for /lib/libnss_files.so.2
Reading symbols from /usr/lib/sasl/libanonymous.so...done.
Loaded symbols for /usr/lib/sasl/libanonymous.so
Reading symbols from /usr/lib/sasl/libcrammd5.so...done.
Loaded symbols for /usr/lib/sasl/libcrammd5.so
Reading symbols from /usr/lib/sasl/libdigestmd5.so...done.
Loaded symbols for /usr/lib/sasl/libdigestmd5.so
Reading symbols from /usr/lib/sasl/liblogin.so...done.
Loaded symbols for /usr/lib/sasl/liblogin.so
Reading symbols from /usr/lib/sasl/libplain.so...done.
Loaded symbols for /usr/lib/sasl/libplain.so
Reading symbols from /usr/lib/sasl/libgssapiv2.so...done.
Loaded symbols for /usr/lib/sasl/libgssapiv2.so
Reading symbols from /usr/kerberos/lib/libgssapi_krb5.so.2...done.
Loaded symbols for /usr/kerberos/lib/libgssapi_krb5.so.2
Reading symbols from /usr/lib/libdb.so.3...done.
Loaded symbols for /usr/lib/libdb.so.3
#0  0x4207ae76 in chunk_free () from /lib/i686/libc.so.6
(gdb) backtrace
#0  0x4207ae76 in chunk_free () from /lib/i686/libc.so.6
#1  0x4207ac24 in free () from /lib/i686/libc.so.6
#2  0x080abbbd in ber_memfree ()
#3  0x080638ab in ch_free ()
#4  0x0808844b in idl_free ()
#5  0x08086cec in list_candidates ()
#6  0x08085e2b in filter_candidates ()
#7  0x0807da7f in search_candidates ()
#8  0x0807d200 in ldbm_back_search ()
#9  0x08054b0c in do_search ()
#10 0x08053488 in connection_operation ()
#11 0x08093774 in ldap_int_thread_pool_wrapper ()
#12 0x40200fef in pthread_start_thread () from /lib/i686/libpthread.so.0
(gdb) list
1       init.c: No such file or directory.
        in init.c
(gdb) bt
#0  0x4207ae76 in chunk_free () from /lib/i686/libc.so.6
#1  0x4207ac24 in free () from /lib/i686/libc.so.6
#2  0x080abbbd in ber_memfree ()
#3  0x080638ab in ch_free ()
#4  0x0808844b in idl_free ()
#5  0x08086cec in list_candidates ()
#6  0x08085e2b in filter_candidates ()
#7  0x0807da7f in search_candidates ()
#8  0x0807d200 in ldbm_back_search ()
#9  0x08054b0c in do_search ()
#10 0x08053488 in connection_operation ()
#11 0x08093774 in ldap_int_thread_pool_wrapper ()
#12 0x40200fef in pthread_start_thread () from /lib/i686/libpthread.so.0
(gdb) list
1       in init.c
(gdb) backtrace full
#0  0x4207ae76 in chunk_free () from /lib/i686/libc.so.6
No symbol table info available.
#1  0x4207ac24 in free () from /lib/i686/libc.so.6
No symbol table info available.
#2  0x080abbbd in ber_memfree ()
No symbol table info available.
#3  0x080638ab in ch_free ()
No symbol table info available.
#4  0x0808844b in idl_free ()
No symbol table info available.
#5  0x08086cec in list_candidates ()
No symbol table info available.
#6  0x08085e2b in filter_candidates ()
No symbol table info available.
#7  0x0807da7f in search_candidates ()
No symbol table info available.
#8  0x0807d200 in ldbm_back_search ()
No symbol table info available.
#9  0x08054b0c in do_search ()
No symbol table info available.
#10 0x08053488 in connection_operation ()
No symbol table info available.
#11 0x08093774 in ldap_int_thread_pool_wrapper ()
No symbol table info available.
#12 0x40200fef in pthread_start_thread () from /lib/i686/libpthread.so.0
No symbol table info available.
(gdb) list
1       in init.c
(gdb) bt full
#0  0x4207ae76 in chunk_free () from /lib/i686/libc.so.6
No symbol table info available.
#1  0x4207ac24 in free () from /lib/i686/libc.so.6
No symbol table info available.
#2  0x080abbbd in ber_memfree ()
No symbol table info available.
#3  0x080638ab in ch_free ()
No symbol table info available.
#4  0x0808844b in idl_free ()
No symbol table info available.
#5  0x08086cec in list_candidates ()
No symbol table info available.
#6  0x08085e2b in filter_candidates ()
No symbol table info available.
#7  0x0807da7f in search_candidates ()
No symbol table info available.
#8  0x0807d200 in ldbm_back_search ()
No symbol table info available.
#9  0x08054b0c in do_search ()
No symbol table info available.
#10 0x08053488 in connection_operation ()
No symbol table info available.
#11 0x08093774 in ldap_int_thread_pool_wrapper ()
No symbol table info available.
#12 0x40200fef in pthread_start_thread () from /lib/i686/libpthread.so.0
No symbol table info available.
(gdb) list
1       in init.c
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