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Re: SLAPD Crashing due to search (ITS#1840)
Have you tried 2.1beta? Your problem might have already been fixed.
unfortunately, openldap is not built with the '-g' compiler flag by
default so the backtrace isn't as illuminating as it could be.
A workaround is to try to use the rpm optimization flag environment
variable. I haven't tried this yet, but from looking at the spec file
it should work.
export RPM_OPT_FLAGS="-g"
rpm --rebuild ...
unset RPM_OPT_FLAGS
let me know if this works.
--Kervin
Garry Thomas wrote:
> 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
>
>
>
>