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Old 10-08-2010, 10:59 PM
Rich Megginson
 
Default Segfault

Edward Z. Yang wrote:
> After manually attaching GDB, we caught a segfault on one of the dirsrvs. The
> server's name is old-faithful. Here's the backtrace (with one set of debugging
> info missing; I can grab that and reload the core dump if you want me to.)
> File a bug, or do you think it's an upstream bug? The core dump probably
> contains sensitive info, so let us know if there are specific things you
> want us to do with it.
>
Try running with the SHELL (1024) debug error log level. This should
give more information about the principal, keytab, etc. that directory
server is using.

What is the platform? Are you using a newer version of kerberos?
> (gdb) thread 10
> [Switching to thread 10 (Thread 31829)]#0 getrn (lh=0x7fe34c004d20, data=0x7fe36ac45350, rhash=<value optimized out>)
> at lhash.c:425
> 425 if (n1->hash != hash)
> (gdb) bt
> #0 getrn (lh=0x7fe34c004d20, data=0x7fe36ac45350, rhash=<value optimized out>) at lhash.c:425
> #1 0x00007fe36a96d9d6 in lh_insert (lh=0x7fe34c004d20, data=0x7fe36ac45350) at lhash.c:189
> #2 0x00007fe36a9700c9 in int_err_set_item (d=0x7fe36ac45350) at err.c:407
> #3 0x00007fe36a96fa4c in err_load_strings (lib=0, str=0x7fe36ac45350) at err.c:676
> #4 0x00007fe36a970fb1 in ERR_load_ERR_strings () at err.c:662
> #5 0x00007fe36a971199 in ERR_load_crypto_strings () at err_all.c:113
> #6 0x00007fe36022d857 in openssl_init (cryptoctx=0x7fe358006218) at pkinit_crypto_openssl.c:2350
> #7 pkinit_init_plg_crypto (cryptoctx=0x7fe358006218) at pkinit_crypto_openssl.c:277
> #8 0x00007fe360222b68 in pkinit_client_plugin_init (context=0x7fe358003830, blob=0x7fe3612b0e40) at pkinit_clnt.c:1362
> #9 0x0000003ab92557eb in krb5_init_preauth_context (kcontext=0x7fe358003830) at preauth2.c:146
> #10 0x0000003ab925628a in krb5_preauth_request_context_init (context=0x7fe358003830) at preauth2.c:305
> #11 0x0000003ab9249ee6 in krb5_get_init_creds (context=0x7fe358003830, creds=0x7fe3612b13c0, client=0x7fe3580021c0,
> prompter=0, prompter_data=0x0, start_time=0, in_tkt_service=0x0, options=0x7fe358002a50,
> gak_fct=0x3ab924bac0 <krb5_get_as_key_keytab>, gak_data=0x7fe3580021a0, use_master=0x7fe3612b123c, as_reply=0x0)
> at get_in_tkt.c:1167
> #12 0x0000003ab924bcce in krb5_get_init_creds_keytab (context=0x7fe358003830, creds=0x7fe3612b13c0, client=0x7fe3580021c0,
> arg_keytab=0x7fe3580021a0, start_time=0, in_tkt_service=0x0, options=0x0) at gic_keytab.c:109
> #13 0x0000003c618602f7 in set_krb5_creds (authid=<value optimized out>, username=<value optimized out>,
> passwd=<value optimized out>, realm=<value optimized out>, vals=0x7fe358002bd0) at ldap/servers/slapd/ldaputil.c:1483
> #14 0x0000003c61860a95 in ldap_sasl_set_interact_vals (ld=0x7fe358002270,
> bindid=0x7fe358003700 "uid=ldap/old-faithful.mit.edu,ou=People,dc=scripts,dc=mit,dc=ed u", creds=0x7fe358000d40 "",
> mech=<value optimized out>, serverctrls=0x0, returnedctrls=0x7fe3612b1ab8, msgidp=0x0)
> at ldap/servers/slapd/ldaputil.c:928
> #15 slapd_ldap_sasl_interactive_bind (ld=0x7fe358002270,
> bindid=0x7fe358003700 "uid=ldap/old-faithful.mit.edu,ou=People,dc=scripts,dc=mit,dc=ed u", creds=0x7fe358000d40 "",
> mech=<value optimized out>, serverctrls=0x0, returnedctrls=0x7fe3612b1ab8, msgidp=0x0)
> at ldap/servers/slapd/ldaputil.c:1044
> #16 0x0000003c61860d17 in slapi_ldap_bind (ld=0x7fe358002270,
> bindid=0x7fe358003700 "uid=ldap/old-faithful.mit.edu,ou=People,dc=scripts,dc=mit,dc=ed u", creds=<value optimized out>,
> mech=<value optimized out>, serverctrls=0x0, returnedctrls=0x7fe3612b1ab8, timeout=0x0, msgidp=0x0)
> at ldap/servers/slapd/ldaputil.c:751
> #17 0x00007fe3685927db in bind_and_check_pwp (conn=0x1480220) at ldap/servers/plugins/replication/repl5_connection.c:1750
> #18 conn_connect (conn=0x1480220) at ldap/servers/plugins/replication/repl5_connection.c:1136
> #19 0x00007fe36859aee7 in acquire_replica (prp=0x1480380, prot_oid=<value optimized out>, ruv=0x7fe3612b1d20)
> at ldap/servers/plugins/replication/repl5_protocol_util.c:168
> #20 0x00007fe368595897 in repl5_inc_run (prp=0x1480380) at ldap/servers/plugins/replication/repl5_inc_protocol.c:828
> #21 0x00007fe36859a3d5 in prot_thread_main (arg=0x14aedd0) at ldap/servers/plugins/replication/repl5_protocol.c:311
> #22 0x0000003abee29593 in _pt_root (arg=0x14ad530) at ../../../mozilla/nsprpub/pr/src/pthreads/ptthread.c:228
> #23 0x0000003ab6207761 in start_thread (arg=0x7fe3612b2710) at pthread_create.c:301
> #24 0x0000003ab5ae151d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>
> Cheers,
> Edward
>

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Old 10-09-2010, 08:36 AM
"Edward Z. Yang"
 
Default Segfault

Excerpts from Rich Megginson's message of Fri Oct 08 18:59:52 -0400 2010:
> Try running with the SHELL (1024) debug error log level. This should
> give more information about the principal, keytab, etc. that directory
> server is using.

More logs:

[09/Oct/2010:04:29:48 -0400] - Listening on /var/run/dirsrv/slapd-scripts.socket for LDAPI requests
[09/Oct/2010:04:29:48 -0400] slapi_ldap_init_ext - Success: set up conn to [better-mousetrap.mit.edu:389]
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - The default credentials cache [FILE:/tmp/krb5cc_485] not found: will create a new one.
[09/Oct/2010:04:29:48 -0400] slapi_ldap_init_ext - configpluginpath == NULL
[09/Oct/2010:04:29:48 -0400] slapi_ldap_init_ext - Success: set up conn to [whole-enchilada.mit.edu:389]
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - Using principal named [ldap/old-faithful.mit.edu@ATHENA.MIT.EDU]
[09/Oct/2010:04:29:48 -0400] slapi_ldap_init_ext - Success: set up conn to [cats-whiskers.mit.edu:389]
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - The default credentials cache [FILE:/tmp/krb5cc_485] not found: will create a new one.
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - Using principal named [ldap/old-faithful.mit.edu@ATHENA.MIT.EDU]
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - The default credentials cache [FILE:/tmp/krb5cc_485] not found: will create a new one.
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - Using principal named [ldap/old-faithful.mit.edu@ATHENA.MIT.EDU]
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - Using keytab named [WRFILE:/etc/dirsrv/keytab]
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - Using keytab named [WRFILE:/etc/dirsrv/keytab]
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - Using keytab named [WRFILE:/etc/dirsrv/keytab]
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - Generated new memory ccache [MEMORY:N0KZtwJ]
[09/Oct/2010:04:29:48 -0400] show_cached_credentials - Ticket cache: MEMORY:N0KZtwJ
Default principal: ldap/old-faithful.mit.edu@ATHENA.MIT.EDU

[09/Oct/2010:04:29:48 -0400] show_one_credential - Kerberos credential: client [ldap/old-faithful.mit.edu@ATHENA.MIT.EDU] server [krbtgt/ATHENA.MIT.EDU@ATHENA.MIT.EDU] start time [Sat Oct 9 04:30:00 2010] end time [Sun Oct 10 01:45:00 2010] renew time [Sun Oct 10 04:29:49 2010] flags [0x50c00000]
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - Set new env for ccache: [KRB5CCNAME=MEMORY:N0KZtwJ]
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - Generated new memory ccache [MEMORY:fyHs1On]
[09/Oct/2010:04:29:48 -0400] show_cached_credentials - Ticket cache: MEMORY:fyHs1On
Default principal: ldap/old-faithful.mit.edu@ATHENA.MIT.EDU

[09/Oct/2010:04:29:48 -0400] show_one_credential - Kerberos credential: client [ldap/old-faithful.mit.edu@ATHENA.MIT.EDU] server [krbtgt/ATHENA.MIT.EDU@ATHENA.MIT.EDU] start time [Sat Oct 9 04:30:00 2010] end time [Sun Oct 10 01:45:00 2010] renew time [Sun Oct 10 04:29:49 2010] flags [0x50c00000]
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - Set new env for ccache: [KRB5CCNAME=MEMORY:fyHs1On]
[09/Oct/2010:04:29:48 -0400] ldap_sasl_get_val - Using value [(null)] for SASL_CB_USER
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - Generated new memory ccache [MEMORY:aIeSCnz]
[09/Oct/2010:04:29:48 -0400] show_cached_credentials - Ticket cache: MEMORY:aIeSCnz
Default principal: ldap/old-faithful.mit.edu@ATHENA.MIT.EDU

[09/Oct/2010:04:29:48 -0400] show_one_credential - Kerberos credential: client [ldap/old-faithful.mit.edu@ATHENA.MIT.EDU] server [krbtgt/ATHENA.MIT.EDU@ATHENA.MIT.EDU] start time [Sat Oct 9 04:30:00 2010] end time [Sun Oct 10 01:45:00 2010] renew time [Sun Oct 10 04:29:49 2010] flags [0x50c00000]
[09/Oct/2010:04:29:48 -0400] set_krb5_creds - Set new env for ccache: [KRB5CCNAME=MEMORY:aIeSCnz]
[09/Oct/2010:04:29:48 -0400] ldap_sasl_get_val - Using value [(null)] for SASL_CB_USER
[09/Oct/2010:04:29:48 -0400] ldap_sasl_get_val - Using value [(null)] for SASL_CB_USER
[09/Oct/2010:04:29:48 -0400] ldap_sasl_get_val - Using value [(null)] for SASL_CB_USER
[09/Oct/2010:04:29:48 -0400] ldap_sasl_get_val - Using value [(null)] for SASL_CB_USER
[09/Oct/2010:04:29:48 -0400] ldap_sasl_get_val - Using value [(null)] for SASL_CB_USER

> What is the platform? Are you using a newer version of kerberos?

Fedora 13. We have the latest version of Kerberos with one custom patch:

Name : krb5-libs
Arch : x86_64
Version : 1.7.1
Release : 14.fc13.scripts.1671
Size : 1.7 M
Repo : installed
>From repo : scripts
Summary : The shared libraries used by Kerberos 5
URL : http://web.mit.edu/kerberos/www/
License : MIT
Description : Kerberos is a network authentication system. The krb5-libs package
: contains the shared libraries needed by Kerberos 5. If you are using
: Kerberos, you need to install this package.

that modifies src/lib/krb5/os/kuserok.c (which was not in the backtrace).

http://scripts.mit.edu/trac/browser/branches/fc13-dev/server/common/patches/krb5-kuserok-scripts.patch

Cheers,
Edward
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Old 10-09-2010, 07:04 PM
"Edward Z. Yang"
 
Default Segfault

Here's another related trace. This one isn't a segfault but
appears to be libc detecting corruption and bugging out (this
explains why dirsrv has crashed and not left a segfault in
dmesg).

#0 0x00000033e2433275 in *__GI_raise (
sig=<value optimized out>)
at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1 0x00000033e2434a55 in *__GI_abort () at abort.c:88
#2 0x00000033e246fb5b in __libc_message (do_abort=2,
fmt=0x7f6dafffd820 "-7f6dc992a000 rw-p 00000000 00:00 0
7fffc2e61000-7fffc2e81000 rw-p 00000000 00:00 0", ' ' <repeats 26 times>, "[stack]
7fffc2e81000-7fffc2e82000 r-xp 00000000 00:00 0", ' ' <repeats 26 times>, "[vdso]
ff"...)
at ../sysdeps/unix/sysv/linux/libc_fatal.c:170
#3 0x00000033e2475506 in malloc_printerr (action=3,
str=0x33e2535fd8 "double free or corruption (!prev)",
ptr=<value optimized out>) at malloc.c:6239
#4 0x00000033e247c280 in _int_realloc (av=0x7f6d9c000020,
oldp=0x7f6d9c529430, oldsize=6, nb=2064) at malloc.c:5295
#5 0x00000033e247c8a5 in *__GI___libc_realloc (
oldmem=0x7f6d9c529440, bytes=2048) at malloc.c:3821
#6 0x0000003d58d01e1f in CRYPTO_realloc (str=0x7f6d9c529440,
num=1408, file=0x3d58d29dac "stack.c", line=150)
at mem.c:355
#7 0x0000003d58c954a0 in sk_insert (st=0x7f6d9c01c110,
data=0x7f6da801ee40 "220", loc=127) at stack.c:149
#8 0x0000003d58c9f49b in EVP_PBE_alg_add (nid=144,
cipher=0x3d58f5bba0, md=0x3d58f60220,
keygen=0x3d58cdbca0 <PKCS12_PBE_keyivgen>)
at evp_pbe.c:129
#9 0x0000003d58cdbf1d in PKCS12_PBE_add () at p12_crpt.c:68
#10 0x0000003d58c9d552 in OpenSSL_add_all_ciphers ()
at c_allc.c:289
#11 0x0000003d58c9cc7e in OPENSSL_add_all_algorithms_noconf ()
at c_all.c:83
#12 0x00007f6dbc6e864c in BN_cmp () at bn_lib.c:665
#13 0x00007f6dbc6dd9d8 in BN_cmp () at bn_lib.c:665
#14 0x0000003945065293 in ?? () from /usr/lib64/libkrb5.so.3
#15 0x0000003945065cea in ?? () from /usr/lib64/libkrb5.so.3
#16 0x000000394505c4d1 in krb5_get_init_creds ()
from /usr/lib64/libkrb5.so.3
#17 0x000000394505d76e in krb5_get_init_creds_keytab ()
from /usr/lib64/libkrb5.so.3
#18 0x00007f6dc969b317 in set_krb5_creds (
authid=<value optimized out>,
username=<value optimized out>,
passwd=<value optimized out>,
realm=<value optimized out>, vals=0x7f6da8090730)
at ldap/servers/slapd/ldaputil.c:1408
#19 0x00007f6dc969bac5 in ldap_sasl_set_interact_vals (
passwd=<value optimized out>,
username=<value optimized out>,
authid=<value optimized out>, mech=<value optimized out>,
ld=<value optimized out>, realm=<value optimized out>)
at ldap/servers/slapd/ldaputil.c:853
#20 slapd_ldap_sasl_interactive_bind (
passwd=<value optimized out>,
username=<value optimized out>,
authid=<value optimized out>, mech=<value optimized out>,
ld=<value optimized out>, realm=<value optimized out>)
at ldap/servers/slapd/ldaputil.c:969
#21 0x00007f6dc969bd4a in slapi_ldap_bind (ld=0x7f6da8021e90,
bindid=0x7f6da808fd30 "uid=ldap/cats-whiskers.mit.edu,ou=People,dc=scripts,dc=mit,dc=ed u", creds=<value optimized out>,
mech=0x7f6dc40b803e "GSSAPI", serverctrls=0x0,
returnedctrls=<value optimized out>, timeout=0x0,
msgidp=0x0) at ldap/servers/slapd/ldaputil.c:751
#22 0x00007f6dc40875d5 in bind_and_check_pwp (
password=<value optimized out>,
binddn=<value optimized out>, conn=<value optimized out>)
at ldap/servers/plugins/replication/repl5_connection.c:1676
#23 conn_connect (password=<value optimized out>,
binddn=<value optimized out>, conn=<value optimized out>)
at ldap/servers/plugins/replication/repl5_connection.c:1134
#24 0x00007f6dc408fa67 in acquire_replica (prp=0xf2ec80,
prot_oid=<value optimized out>, ruv=0x7f6dafffef90)
at ldap/servers/plugins/replication/repl5_protocol_util.c:168
#25 0x00007f6dc408a5c7 in repl5_inc_run (prp=0xf2ec80)
at ldap/servers/plugins/replication/repl5_inc_protocol.c:814
#26 0x00007f6dc408f119 in prot_thread_main (
arg=<value optimized out>)
at ldap/servers/plugins/replication/repl5_protocol.c:313
#27 0x00000038a6e29773 in ?? () from /lib64/libnspr4.so
#28 0x00000033e300685a in start_thread (
arg=<value optimized out>) at pthread_create.c:297
#29 0x00000033e24de22d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#30 0x0000000000000000 in ?? ()

Cheers,
Edward
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Old 10-10-2010, 10:06 AM
"Edward Z. Yang"
 
Default Segfault

Another trace, not like the others.

#0 _int_malloc (av=0x7fff0cb91f80, bytes=32671600)
at malloc.c:4294
#1 0x000000300ac7ab52 in *__GI___libc_malloc (bytes=15)
at malloc.c:3660
#2 0x0000003ce3457481 in krb5_copy_principal ()
from /usr/lib64/libkrb5.so.3
#3 0x0000003ce3457040 in krb5_copy_creds ()
from /usr/lib64/libkrb5.so.3
#4 0x0000003ce3447077 in ?? () from /usr/lib64/libkrb5.so.3
#5 0x0000003ce344bfa2 in krb5_cc_store_cred ()
from /usr/lib64/libkrb5.so.3
#6 0x00007f471fdbc4c1 in set_krb5_creds (
authid=<value optimized out>,
username=<value optimized out>,
passwd=<value optimized out>,
realm=<value optimized out>, vals=0x7f46f4093020)
at ldap/servers/slapd/ldaputil.c:1483
#7 0x00007f471fdbcac5 in ldap_sasl_set_interact_vals (
passwd=<value optimized out>,
username=<value optimized out>,
authid=<value optimized out>, mech=<value optimized out>,
ld=<value optimized out>, realm=<value optimized out>)
at ldap/servers/slapd/ldaputil.c:853
#8 slapd_ldap_sasl_interactive_bind (
passwd=<value optimized out>,
username=<value optimized out>,
authid=<value optimized out>, mech=<value optimized out>,
ld=<value optimized out>, realm=<value optimized out>)
at ldap/servers/slapd/ldaputil.c:969
#9 0x00007f471fdbcd4a in slapi_ldap_bind (ld=0x7f46f4092c20,
bindid=0x7f46f40c8f40 "uid=ldap/bees-knees.mit.edu,ou=People,dc=scripts,dc=mit,dc=edu", creds=<value optimized out>,
mech=0x7f471a7f003e "GSSAPI", serverctrls=0x0,
returnedctrls=<value optimized out>, timeout=0x0,
msgidp=0x0) at ldap/servers/slapd/ldaputil.c:751
#10 0x00007f471a7bf5d5 in bind_and_check_pwp (
password=<value optimized out>,
binddn=<value optimized out>, conn=<value optimized out>)
at ldap/servers/plugins/replication/repl5_connection.c:1676
#11 conn_connect (password=<value optimized out>,
binddn=<value optimized out>, conn=<value optimized out>)
at ldap/servers/plugins/replication/repl5_connection.c:1134
#12 0x00007f471a7c7a67 in acquire_replica (prp=0x20c3880,
prot_oid=<value optimized out>, ruv=0x7f470d579f90)
at ldap/servers/plugins/replication/repl5_protocol_util.c:168
#13 0x00007f471a7c25c7 in repl5_inc_run (prp=0x20c3880)
at ldap/servers/plugins/replication/repl5_inc_protocol.c:814
#14 0x00007f471a7c7119 in prot_thread_main (
arg=<value optimized out>)
at ldap/servers/plugins/replication/repl5_protocol.c:313
#15 0x0000003facc29773 in ?? () from /lib64/libnspr4.so
#16 0x000000300b80685a in start_thread (
arg=<value optimized out>) at pthread_create.c:297
#17 0x000000300acde22d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#18 0x0000000000000000 in ?? ()

Cheers,
Edward
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Old 10-11-2010, 05:24 PM
Rich Megginson
 
Default Segfault

Edward Z. Yang wrote:
> Excerpts from Rich Megginson's message of Fri Oct 08 18:59:52 -0400 2010:
>
>> Try running with the SHELL (1024) debug error log level. This should
>> give more information about the principal, keytab, etc. that directory
>> server is using.
>>
>
> More logs:
>
> [09/Oct/2010:04:29:48 -0400] - Listening on /var/run/dirsrv/slapd-scripts.socket for LDAPI requests
> [09/Oct/2010:04:29:48 -0400] slapi_ldap_init_ext - Success: set up conn to [better-mousetrap.mit.edu:389]
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - The default credentials cache [FILE:/tmp/krb5cc_485] not found: will create a new one.
> [09/Oct/2010:04:29:48 -0400] slapi_ldap_init_ext - configpluginpath == NULL
> [09/Oct/2010:04:29:48 -0400] slapi_ldap_init_ext - Success: set up conn to [whole-enchilada.mit.edu:389]
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - Using principal named [ldap/old-faithful.mit.edu@ATHENA.MIT.EDU]
> [09/Oct/2010:04:29:48 -0400] slapi_ldap_init_ext - Success: set up conn to [cats-whiskers.mit.edu:389]
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - The default credentials cache [FILE:/tmp/krb5cc_485] not found: will create a new one.
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - Using principal named [ldap/old-faithful.mit.edu@ATHENA.MIT.EDU]
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - The default credentials cache [FILE:/tmp/krb5cc_485] not found: will create a new one.
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - Using principal named [ldap/old-faithful.mit.edu@ATHENA.MIT.EDU]
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - Using keytab named [WRFILE:/etc/dirsrv/keytab]
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - Using keytab named [WRFILE:/etc/dirsrv/keytab]
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - Using keytab named [WRFILE:/etc/dirsrv/keytab]
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - Generated new memory ccache [MEMORY:N0KZtwJ]
> [09/Oct/2010:04:29:48 -0400] show_cached_credentials - Ticket cache: MEMORY:N0KZtwJ
> Default principal: ldap/old-faithful.mit.edu@ATHENA.MIT.EDU
>
> [09/Oct/2010:04:29:48 -0400] show_one_credential - Kerberos credential: client [ldap/old-faithful.mit.edu@ATHENA.MIT.EDU] server [krbtgt/ATHENA.MIT.EDU@ATHENA.MIT.EDU] start time [Sat Oct 9 04:30:00 2010] end time [Sun Oct 10 01:45:00 2010] renew time [Sun Oct 10 04:29:49 2010] flags [0x50c00000]
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - Set new env for ccache: [KRB5CCNAME=MEMORY:N0KZtwJ]
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - Generated new memory ccache [MEMORY:fyHs1On]
> [09/Oct/2010:04:29:48 -0400] show_cached_credentials - Ticket cache: MEMORY:fyHs1On
> Default principal: ldap/old-faithful.mit.edu@ATHENA.MIT.EDU
>
> [09/Oct/2010:04:29:48 -0400] show_one_credential - Kerberos credential: client [ldap/old-faithful.mit.edu@ATHENA.MIT.EDU] server [krbtgt/ATHENA.MIT.EDU@ATHENA.MIT.EDU] start time [Sat Oct 9 04:30:00 2010] end time [Sun Oct 10 01:45:00 2010] renew time [Sun Oct 10 04:29:49 2010] flags [0x50c00000]
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - Set new env for ccache: [KRB5CCNAME=MEMORY:fyHs1On]
> [09/Oct/2010:04:29:48 -0400] ldap_sasl_get_val - Using value [(null)] for SASL_CB_USER
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - Generated new memory ccache [MEMORY:aIeSCnz]
> [09/Oct/2010:04:29:48 -0400] show_cached_credentials - Ticket cache: MEMORY:aIeSCnz
> Default principal: ldap/old-faithful.mit.edu@ATHENA.MIT.EDU
>
> [09/Oct/2010:04:29:48 -0400] show_one_credential - Kerberos credential: client [ldap/old-faithful.mit.edu@ATHENA.MIT.EDU] server [krbtgt/ATHENA.MIT.EDU@ATHENA.MIT.EDU] start time [Sat Oct 9 04:30:00 2010] end time [Sun Oct 10 01:45:00 2010] renew time [Sun Oct 10 04:29:49 2010] flags [0x50c00000]
> [09/Oct/2010:04:29:48 -0400] set_krb5_creds - Set new env for ccache: [KRB5CCNAME=MEMORY:aIeSCnz]
> [09/Oct/2010:04:29:48 -0400] ldap_sasl_get_val - Using value [(null)] for SASL_CB_USER
> [09/Oct/2010:04:29:48 -0400] ldap_sasl_get_val - Using value [(null)] for SASL_CB_USER
> [09/Oct/2010:04:29:48 -0400] ldap_sasl_get_val - Using value [(null)] for SASL_CB_USER
> [09/Oct/2010:04:29:48 -0400] ldap_sasl_get_val - Using value [(null)] for SASL_CB_USER
> [09/Oct/2010:04:29:48 -0400] ldap_sasl_get_val - Using value [(null)] for SASL_CB_USER
>
>
>> What is the platform? Are you using a newer version of kerberos?
>>
>
> Fedora 13. We have the latest version of Kerberos with one custom patch:
>
> Name : krb5-libs
> Arch : x86_64
> Version : 1.7.1
> Release : 14.fc13.scripts.1671
> Size : 1.7 M
> Repo : installed
> From repo : scripts
> Summary : The shared libraries used by Kerberos 5
> URL : http://web.mit.edu/kerberos/www/
> License : MIT
> Description : Kerberos is a network authentication system. The krb5-libs package
> : contains the shared libraries needed by Kerberos 5. If you are using
> : Kerberos, you need to install this package.
>
> that modifies src/lib/krb5/os/kuserok.c (which was not in the backtrace).
>
> http://scripts.mit.edu/trac/browser/branches/fc13-dev/server/common/patches/krb5-kuserok-scripts.patch
>
> Cheers,
> Edward
>
Thanks. Based upon this information and the stack traces you provided
(Thanks!) it looks like the directory server is freeing something in the
krb5_creds creds;
that it should not be. The errors look like double free or realloc of
already freed memory. I had to rely heavily on the 1.5 and 1.6 kerberos
code to make sure I was using krb5_get_init_creds_keytab() and
krb5_cc_store_cred() and krb5_free_cred_contents() correctly. It's
quite likely that I did not, and the later version of kerberos changed
something to "unmask" the problem. Please file a bug at
https://bugzilla.redhat.com/enter_bug.cgi?product=389 and please attach
your info and stack traces as attachments to the bug.

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Old 10-11-2010, 08:54 PM
"Edward Z. Yang"
 
Default Segfault

Done.

https://bugzilla.redhat.com/show_bug.cgi?id=642046

Cheers,
Edward
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Old 12-25-2010, 02:16 PM
Sandeil Tenebro
 
Default segfault

Hi,

We have seen this messages on one of our server.

OS: CentOS 5.5
Processor: Xeon E5520 @ 2.27GHz
Memory: 24 GB
localhost ]# rpm -qa | grep httpd
httpd-2.2.3-43.el5.centos.3
system-config-httpd-1.3.3.3-1.el5
httpd-devel-2.2.3-43.el5.centos.3
httpd-devel-2.2.3-43.el5.centos.3

Need help in collecting data and solve the issue.

Below are the details

message
kernel: httpd[2090]: segfault at 00007fff3bacfec4 rip 00002ba6bbc50855 rsp
00007fff3bacfe50 error 6

(gdb) bt full
#0 0x00002b30a5a91b00 in __accept_nocancel () from /lib64/libpthread.so.0
No symbol table info available.
#1 0x00002b30a58772f4 in apr_socket_accept () from /usr/lib64/libapr-1.so.0
No symbol table info available.
#2 0x00002b30a3fbcc31 in unixd_accept ()
No symbol table info available.
#3 0x00002b30a3fbb6d7 in ?? ()
No symbol table info available.
#4 0x00002b30a3fbba1a in ?? ()
No symbol table info available.
#5 0x00002b30a3fbc27d in ap_mpm_run ()
No symbol table info available.
#6 0x00002b30a3f96e48 in main ()
No symbol table info available.

(gdb) run
Starting program: /usr/sbin/httpd
[Thread debugging using libthread_db enabled]
(98)Address already in use: make_sock: could not bind to address [::]:80
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
Unable to open logs

Program exited with code 01.


Please advice.

Thank you,
Sandeil



_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
 
Old 12-25-2010, 04:01 PM
Lucian
 
Default segfault

On Sat, Dec 25, 2010 at 3:16 PM, Sandeil Tenebro <mayukmok00@yahoo.com> wrote:
> Hi,
>
> We have seen this messages on one of our server.
>
> OS: CentOS 5.5
> Processor: Xeon E5520 *@ 2.27GHz
> Memory: 24 GB
> localhost ]# rpm -qa | grep httpd
> httpd-2.2.3-43.el5.centos.3
> system-config-httpd-1.3.3.3-1.el5
> httpd-devel-2.2.3-43.el5.centos.3
> httpd-devel-2.2.3-43.el5.centos.3
>
> Need help in collecting data and solve the issue.
>
> Below are the details
>
> message
> kernel: httpd[2090]: segfault at 00007fff3bacfec4 rip 00002ba6bbc50855 rsp
> 00007fff3bacfe50 error 6
>
> (gdb) bt full
> #0 *0x00002b30a5a91b00 in __accept_nocancel () from /lib64/libpthread.so.0
> No symbol table info available.
> #1 *0x00002b30a58772f4 in apr_socket_accept () from /usr/lib64/libapr-1.so.0
> No symbol table info available.
> #2 *0x00002b30a3fbcc31 in unixd_accept ()
> No symbol table info available.
> #3 *0x00002b30a3fbb6d7 in ?? ()
> No symbol table info available.
> #4 *0x00002b30a3fbba1a in ?? ()
> No symbol table info available.
> #5 *0x00002b30a3fbc27d in ap_mpm_run ()
> No symbol table info available.
> #6 *0x00002b30a3f96e48 in main ()
> No symbol table info available.
>
> (gdb) run
> Starting program: /usr/sbin/httpd
> [Thread debugging using libthread_db enabled]
> (98)Address already in use: make_sock: could not bind to address [::]:80
> (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80
> no listening sockets available, shutting down
> Unable to open logs
>
> Program exited with code 01.
>
>
> *Please advice.
>
> Thank you,
> Sandeil
>
>
>
> _______________________________________________
> CentOS mailing list
> CentOS@centos.org
> http://lists.centos.org/mailman/listinfo/centos
>

Seems like there's stuff causing httpd to crash and hang. Before
starting httpd again you need to kill the hanging processes (ps
aux|grep http or lsof -iTCP:80).
What exactly are you serving off that web server? Do you have any
manually installed/compiled programs (e.g. php) or from 3rd party
repos?
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Old 12-26-2010, 03:13 PM
Sandeil Tenebro
 
Default segfault

Hello Lucian,

We are hosting sites and yes, we are using Webtatic repository. By tracing Zend
is also installed from tar.gz package.


Thank you,
Sandeil





Seems like there's stuff causing httpd to crash and hang. Before
starting httpd again you need to kill the hanging processes (ps
aux|grep http or lsof -iTCP:80).
What exactly are you serving off that web server? Do you have any
manually installed/compiled programs (e.g. php) or from 3rd party
repos?


_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
 
Old 12-31-2010, 05:40 AM
Sandeil Tenebro
 
Default segfault

Hi list,

As an update I have the latest core dump and did a back trace. Please see below.

Thank you,
Sandeil

=====
*** thread apply all bt

#20131 0x00002ac96feba29a in ?? () from /lib64/libpcre.so.0
#20132 0x00002ac96feba1d9 in ?? () from /lib64/libpcre.so.0
#20133 0x00002ac96feba29a in ?? () from /lib64/libpcre.so.0
#20134 0x00002ac96feb6c4b in ?? () from /lib64/libpcre.so.0
#20135 0x00002ac96febb6c1 in pcre_exec () from /lib64/libpcre.so.0
#20136 0x00002ac97a155806 in php_pcre_replace_impl () from
/etc/httpd/modules/libphp5.so
#20137 0x00002ac97a1569b2 in ?? () from /etc/httpd/modules/libphp5.so
#20138 0x00002ac97a157075 in ?? () from /etc/httpd/modules/libphp5.so
#20139 0x00002ac97f8d19a3 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20140 0x00002ac97f8d4188 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20141 0x00002ac97f8d506c in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20142 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20143 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20144 0x00002ac97f8d434f in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20145 0x00002ac97f8d506c in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20146 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20147 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20148 0x00002ac97f8d434f in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20149 0x00002ac97f8d506c in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
---Type <return> to continue, or q <return> to quit---
#20150 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20151 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20152 0x00002ac97f8d434f in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20153 0x00002ac97f8d506c in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20154 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20155 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20156 0x00002ac97a29e0af in ?? () from /etc/httpd/modules/libphp5.so
#20157 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20158 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20159 0x00002ac97a277cb3 in zend_execute_scripts () from
/etc/httpd/modules/libphp5.so
#20160 0x00002ac97a23798a in php_execute_script () from
/etc/httpd/modules/libphp5.so
#20161 0x00002ac97a2fc805 in ?? () from /etc/httpd/modules/libphp5.so
#20162 0x00002ac96f7e0a4a in ap_run_handler ()
#20163 0x00002ac96f7e3ed8 in ap_invoke_handler ()
#20164 0x00002ac96f7ee78a in ap_internal_redirect ()
#20165 0x00002ac978628bc0 in ap_make_dirstr_parent () from
/etc/httpd/modules/mod_rewrite.so
#20166 0x00002ac96f7e0a4a in ap_run_handler ()
#20167 0x00002ac96f7e3ed8 in ap_invoke_handler ()
#20168 0x00002ac96f7ee938 in ap_process_request ()
#20169 0x00002ac96f7ebb70 in ?? ()
#20170 0x00002ac96f7e7cd2 in ap_run_process_connection ()
#20171 0x00002ac96f7f2789 in ?? ()
#20172 0x00002ac96f7f2a1a in ?? ()
#20173 0x00002ac96f7f327d in ap_mpm_run ()
#20174 0x00002ac96f7cde48 in main ()
(gdb)
(gdb)

*** bt
#20135 0x00002ac96febb6c1 in pcre_exec () from /lib64/libpcre.so.0
#20136 0x00002ac97a155806 in php_pcre_replace_impl () from
/etc/httpd/modules/libphp5.so
#20137 0x00002ac97a1569b2 in ?? () from /etc/httpd/modules/libphp5.so
#20138 0x00002ac97a157075 in ?? () from /etc/httpd/modules/libphp5.so
#20139 0x00002ac97f8d19a3 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20140 0x00002ac97f8d4188 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20141 0x00002ac97f8d506c in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20142 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20143 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20144 0x00002ac97f8d434f in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20145 0x00002ac97f8d506c in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20146 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20147 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20148 0x00002ac97f8d434f in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20149 0x00002ac97f8d506c in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20150 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20151 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
---Type <return> to continue, or q <return> to quit---
#20152 0x00002ac97f8d434f in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20153 0x00002ac97f8d506c in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20154 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20155 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20156 0x00002ac97a29e0af in ?? () from /etc/httpd/modules/libphp5.so
#20157 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20158 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
#20159 0x00002ac97a277cb3 in zend_execute_scripts () from
/etc/httpd/modules/libphp5.so
#20160 0x00002ac97a23798a in php_execute_script () from
/etc/httpd/modules/libphp5.so
#20161 0x00002ac97a2fc805 in ?? () from /etc/httpd/modules/libphp5.so
#20162 0x00002ac96f7e0a4a in ap_run_handler ()
#20163 0x00002ac96f7e3ed8 in ap_invoke_handler ()
#20164 0x00002ac96f7ee78a in ap_internal_redirect ()
#20165 0x00002ac978628bc0 in ap_make_dirstr_parent () from
/etc/httpd/modules/mod_rewrite.so
#20166 0x00002ac96f7e0a4a in ap_run_handler ()
#20167 0x00002ac96f7e3ed8 in ap_invoke_handler ()
#20168 0x00002ac96f7ee938 in ap_process_request ()
#20169 0x00002ac96f7ebb70 in ?? ()
#20170 0x00002ac96f7e7cd2 in ap_run_process_connection ()
#20171 0x00002ac96f7f2789 in ?? ()
#20172 0x00002ac96f7f2a1a in ?? ()
#20173 0x00002ac96f7f327d in ap_mpm_run ()
#20174 0x00002ac96f7cde48 in main ()

*** bt full

---Type <return> to continue, or q <return> to quit---
#20130 0x00002ac96feba1d9 in ?? () from /lib64/libpcre.so.0
No symbol table info available.
#20131 0x00002ac96feba29a in ?? () from /lib64/libpcre.so.0
No symbol table info available.
#20132 0x00002ac96feba1d9 in ?? () from /lib64/libpcre.so.0
No symbol table info available.
#20133 0x00002ac96feba29a in ?? () from /lib64/libpcre.so.0
No symbol table info available.
#20134 0x00002ac96feb6c4b in ?? () from /lib64/libpcre.so.0
No symbol table info available.
#20135 0x00002ac96febb6c1 in pcre_exec () from /lib64/libpcre.so.0
No symbol table info available.
#20136 0x00002ac97a155806 in php_pcre_replace_impl () from
/etc/httpd/modules/libphp5.so
No symbol table info available.
#20137 0x00002ac97a1569b2 in ?? () from /etc/httpd/modules/libphp5.so
No symbol table info available.
#20138 0x00002ac97a157075 in ?? () from /etc/httpd/modules/libphp5.so
No symbol table info available.
#20139 0x00002ac97f8d19a3 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20140 0x00002ac97f8d4188 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20141 0x00002ac97f8d506c in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20142 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20143 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20144 0x00002ac97f8d434f in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20145 0x00002ac97f8d506c in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20146 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20147 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20148 0x00002ac97f8d434f in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20149 0x00002ac97f8d506c in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20150 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20151 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#20152 0x00002ac97f8d434f in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20153 0x00002ac97f8d506c in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20154 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20155 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20156 0x00002ac97a29e0af in ?? () from /etc/httpd/modules/libphp5.so
No symbol table info available.
#20157 0x00002ac97f8d3b74 in ?? () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20158 0x00002ac97f92f311 in zend_oe () from
/usr/local/Zend/lib/Optimizer-3.3.3/php-5.2.x/ZendOptimizer.so
No symbol table info available.
#20159 0x00002ac97a277cb3 in zend_execute_scripts () from
/etc/httpd/modules/libphp5.so
No symbol table info available.
#20160 0x00002ac97a23798a in php_execute_script () from
/etc/httpd/modules/libphp5.so
No symbol table info available.
#20161 0x00002ac97a2fc805 in ?? () from /etc/httpd/modules/libphp5.so
No symbol table info available.
#20162 0x00002ac96f7e0a4a in ap_run_handler ()
No symbol table info available.
#20163 0x00002ac96f7e3ed8 in ap_invoke_handler ()
No symbol table info available.
#20164 0x00002ac96f7ee78a in ap_internal_redirect ()
No symbol table info available.
#20165 0x00002ac978628bc0 in ap_make_dirstr_parent () from
/etc/httpd/modules/mod_rewrite.so
No symbol table info available.
#20166 0x00002ac96f7e0a4a in ap_run_handler ()
No symbol table info available.
#20167 0x00002ac96f7e3ed8 in ap_invoke_handler ()
No symbol table info available.
#20168 0x00002ac96f7ee938 in ap_process_request ()
No symbol table info available.
#20169 0x00002ac96f7ebb70 in ?? ()
No symbol table info available.
#20170 0x00002ac96f7e7cd2 in ap_run_process_connection ()
No symbol table info available.
#20171 0x00002ac96f7f2789 in ?? ()
No symbol table info available.
#20172 0x00002ac96f7f2a1a in ?? ()
No symbol table info available.
#20173 0x00002ac96f7f327d in ap_mpm_run ()
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#20174 0x00002ac96f7cde48 in main ()
No symbol table info available.

*** bt all
No symbol table is loaded. Use the "file" command.

=====



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