Hey folks, I'm running CentOS 5.2 with a custom built apache not from Yum.
I am following instructions here http://perl.apache.org/docs/2.0/devel/debug/c.html#Getting_the_core_File_Dumped and here : http://perl.apache.org/docs/2.0/devel/debug/c.html#Analyzing_Dumped_Core_Files I have mod_perl built with symbols and reproduce my problem, but I'm not having much luck with gdb. I really have no experience with this aspect of Linux so am shooting in the dark a bit here. I also have no idea whether I'm "threaded" or "unthreaded", so I tried both of the "curinfo" macros with no luck. Here is the output of "bt full" which clearly shows a few "my_perl" entries. But I'm just not clear how to find out what part of our Perl code is causing the issue. (gdb) bt full #0 0x0044e172 in Perl_cv_const_sv () from /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so No symbol table info available. #1 0x00442a7c in Perl_yylex () from /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so No symbol table info available. #2 0x0044b295 in Perl_yyparse () from /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so No symbol table info available. #3 0x004b8200 in Perl_pp_range () from /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so No symbol table info available. #4 0x004ba0b2 in Perl_pp_require () from /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so No symbol table info available. #5 0x004ba7ad in Perl_pp_dofile () from /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so No symbol table info available. #6 0x0048488f in Perl_runops_standard () from /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so No symbol table info available. #7 0x00424ffe in Perl_magicname () from /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so No symbol table info available. #8 0x00429806 in Perl_call_sv () from /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so No symbol table info available. #9 0x00140a7f in modperl_callback (my_perl=0x9476458, handler=0xaccc268, p=0xaf2a840, r=0xaf2a880, s=0xad0bad0, args=0xbd473e8) at modperl_callback.c:101 items = <value optimized out> cv = <value optimized out> sp = (SV **) 0xafead24 status = 0 #10 0x0014117a in modperl_callback_run_handlers (idx=6, type=4, r=0xaf2a880, c=0x0, s=0xad0bad0, pconf=0x0, plog=0x0, ptemp=0x0, run_mode=MP_HOOK_RUN_FIRST) at modperl_callback.c:262 my_perl = (PerlInterpreter *) 0x9476458 interp = (modperl_interp_t *) 0xa965888 scfg = (modperl_config_srv_t *) 0x8d437b8 dcfg = (modperl_config_dir_t *) 0xaf2a2e0 rcfg = (modperl_config_req_t *) 0xaf2b5f0 handlers = (modperl_handler_t **) 0xaccc298 p = (apr_pool_t *) 0xaf2a840 av = (MpAV *) 0xaccc280 avp = <value optimized out> i = 0 status = 0 desc = 0x158cd3 "PerlResponseHandler" av_args = (AV *) 0xbd473e8 #11 0x0014180a in modperl_callback_per_dir (idx=6, r=0xaf2a880, run_mode=MP_HOOK_RUN_FIRST) at modperl_callback.c:369 No locals. #12 0x0013a79f in modperl_response_handler_run (r=0xaf2a880, finish=0) at mod_perl.c:1000 retval = <value optimized out> #13 0x0013a96b in modperl_response_handler_cgi (r=0xaf2a880) at mod_perl.c:1100 dcfg = (modperl_config_dir_t *) 0xaf2a2e0 h_stdin = (GV *) 0xc2d7a20 h_stdout = (GV *) 0xb4ba144 retval = -1 rc = <value optimized out> rcfg = (modperl_config_req_t *) 0xaf2b5f0 my_perl = (PerlInterpreter *) 0x9476458 interp = (modperl_interp_t *) 0xa965888 #14 0x08076a79 in ap_run_handler (r=0xaf2a880) at config.c:157 n = 6 rv = 40 #15 0x08079be7 in ap_invoke_handler (r=0xaf2a880) at config.c:372 handler = 0x0 result = <value optimized out> old_handler = 0xaccbe38 "perl-script" ignore = <value optimized out> #16 0x08090798 in ap_process_request (r=0xaf2a880) at http_request.c:258 ---Type <return> to continue, or q <return> to quit--- access_status = 0 #17 0x0808da3b in ap_process_http_connection (c=0xaf1a9d8) at http_core.c:190 r = (request_rec *) 0xaf2a880 csd = (apr_socket_t *) 0x0 #18 0x0807dab9 in ap_run_process_connection (c=0xaf1a9d8) at connection.c:43 n = 1 rv = 40 #19 0x080a3dc5 in child_main (child_num_arg=<value optimized out>) at prefork.c:650 numdesc = 0 pdesc = (const apr_pollfd_t *) 0x0 current_conn = (conn_rec *) 0xaf1a9d8 csd = (void *) 0xaf1a840 ptrans = (apr_pool_t *) 0xaf1a800 allocator = (apr_allocator_t *) 0x9301738 status = <value optimized out> i = <value optimized out> lr = <value optimized out> pollset = (apr_pollset_t *) 0xaf18850 sbh = (ap_sb_handle_t *) 0xaf18848 bucket_alloc = (apr_bucket_alloc_t *) 0xaf1c808 last_poll_idx = 0 #20 0x080a4087 in make_child (s=0x8d2fd70, slot=28) at prefork.c:746 pid = 0 #21 0x080a49e0 in ap_mpm_run (_pconf=0x8d070a8, plog=0x8d451a0, s=0x8d2fd70) at prefork.c:881 status = 0 pid = {pid = -1, in = 0x8d01250, out = 0x2, err = 0xd070a8} child_slot = <value optimized out> exitwhy = APR_PROC_EXIT processed_status = <value optimized out> index = <value optimized out> remaining_children_to_start = 0 rv = <value optimized out> #22 0x08064645 in main (argc=147869856, argv=0xaf187f8) at main.c:740 c = 0 '\0' configtestonly = 0 confname = 0x80ae357 "conf/httpd.conf" def_server_root = 0x80ae367 "/usr/local/apache2" temp_error_log = 0x0 error = <value optimized out> process = (process_rec *) 0x8d05130 server_conf = <value optimized out> pglobal = (apr_pool_t *) 0x8d050a0 pconf = (apr_pool_t *) 0x8d070a8 plog = (apr_pool_t *) 0x8d451a0 ptemp = (apr_pool_t *) 0x8d491b0 pcommands = (apr_pool_t *) 0x8d090b0 opt = (apr_getopt_t *) 0x8d09150 rv = 0 optarg = 0x3b6ff4 "\234m;" (gdb) -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food"
