Please disregard my last post - I'd switched Apache back from the debug
module for the night and forgotten to turn it back on.
I've attached the full trace but here's the main part:
(gdb) print (char
*)(executor_globals.function_state_ptr->function)->common.function_name
$4 = 0xffffffff7bb69250 "preg_match_all"
(gdb) frame 8
#8 0xffffffff7baeabe4 in execute (op_array=0x1003a07d0) at
/root/build/php-4.3.4/Zend/zend_execute.c:1660
1660
zend_execute(EG(active_op_array) TSRMLS_CC);
(gdb) frame 9
#9 0xffffffff7baeabe4 in execute (op_array=0x1003af0c0) at
/root/build/php-4.3.4/Zend/zend_execute.c:1660
1660
zend_execute(EG(active_op_array) TSRMLS_CC);
(gdb) frame 10
#10 0xffffffff7baeabe4 in execute (op_array=0x10038f230) at
/root/build/php-4.3.4/Zend/zend_execute.c:1660
1660
zend_execute(EG(active_op_array) TSRMLS_CC);
(gdb) frame 11
#11 0xffffffff7bacde24 in zend_execute_scripts (type=8, retval=0x0,
file_count=3)
at /root/build/php-4.3.4/Zend/zend.c:884
884 zend_execute(EG(active_op_array) TSRMLS_CC);
(gdb) frame 12
#12 0xffffffff7ba6dd08 in php_execute_script
(primary_file=0xffffffff7fffef20)
at /root/build/php-4.3.4/main/main.c:1729
1729 retval = (zend_execute_scripts(ZEND_REQUIRE
TSRMLS_CC, NULL, 3, prepend_file_p, primary_file, append_file_p) ==
SUCCESS);
Stu
-----Original Message-----
From: E. Stuart Hicks [mailto:[EMAIL PROTECTED]
Sent: Thursday, January 22, 2004 2:07 PM
To: 'Martin Luethi'; [EMAIL PROTECTED]
Subject: RE: [PHP] Segmentation fault problem
I still can't access anything on bugs.php.net so I'm not sure exactly what
you need. I grabbed all of the execute() frames, though, and ran that print
function and got this:
(gdb) print (char
*)(executor_globals.function_state_ptr->function)->common.function_name
Attempt to extract a component of a value that is not a structure.
(gdb) frame 6
#6 0xffffffff7babef00 in execute () from /home/httpd/modules/libphp4.so
(gdb) frame 7
#7 0xffffffff7babf244 in execute () from /home/httpd/modules/libphp4.so
(gdb) frame 8
#8 0xffffffff7babf244 in execute () from /home/httpd/modules/libphp4.so
(gdb) frame 9
#9 0xffffffff7babf244 in execute () from /home/httpd/modules/libphp4.so
(gdb) frame 10
#10 0xffffffff7babf244 in execute () from /home/httpd/modules/libphp4.so
Does this help?
Stu
-----Original Message-----
From: Martin Luethi [mailto:[EMAIL PROTECTED]
Sent: Thursday, January 22, 2004 2:24 AM
To: [EMAIL PROTECTED]
Subject: Re: [PHP] Segmentation fault problem
each php function is executed by the internal function "execute()"
please include the details about this frames also (configure php with
--enable-debug first) e.g.:
(gdb) frame 6
output...
(gdb) print (char *)(executor_globals.function_state_ptr->function)-
>common.function_name
output...
with this information you can see which php-command causing the seg fault
-> http://bugs.php.net/bugs-generating-backtrace.php
g. martin luethi
> Program received signal SIGSEGV, Segmentation fault.
> 0xffffffff7bacedcc in zend_parse_arg_impl (arg=0x1003853c0,
> va=0xffffffff7ffe3a88, spec=0xffffffff7ffe3a58)
> at /root/build/php-4.3.4/Zend/zend_API.c:259
> 259 *p =
Z_LVAL_PP(arg);
> (gdb) bt
> #0 0xffffffff7bacedcc in zend_parse_arg_impl (arg=0x1003853c0,
> va=0xffffffff7ffe3a88, spec=0xffffffff7ffe3a58)
> at /root/build/php-4.3.4/Zend/zend_API.c:259
> #1 0xffffffff7bacfa54 in zend_parse_arg (arg_num=4, arg=0x1003853c0,
> va=0xffffffff7ffe3a88,
> spec=0xffffffff7ffe3a58, quiet=0) at
> /root/build/php-4.3.4/Zend/zend_API.c:439
> #2 0xffffffff7bacff40 in zend_parse_va_args (num_args=0,
> type_spec=0xffffffff7bb6906c "ll",
> va=0xffffffff7ffe3a88, flags=0) at
> /root/build/php-4.3.4/Zend/zend_API.c:524
> #3 0xffffffff7bad032c in zend_parse_parameters (num_args=4,
> type_spec=0xffffffff7bb69068 "ssz|ll")
> at /root/build/php-4.3.4/Zend/zend_API.c:551
> #4 0xffffffff7b9493cc in php_pcre_match (ht=4, return_value=0x1008c4c00,
> this_ptr=0x0, return_value_used=0,
> global=1) at /root/build/php-4.3.4/ext/pcre/php_pcre.c:375
> #5 0xffffffff7b94a464 in zif_preg_match_all (ht=4,
> return_value=0x1008c4c00, this_ptr=0x0, return_value_used=0)
> at /root/build/php-4.3.4/ext/pcre/php_pcre.c:608
> #6 0xffffffff7baea870 in execute (op_array=0x1008ac610) at
> /root/build/php-4.3.4/Zend/zend_execute.c:1616
> #7 0xffffffff7baeabe4 in execute (op_array=0x100884bd0) at
> /root/build/php-4.3.4/Zend/zend_execute.c:1660
> #8 0xffffffff7baeabe4 in execute (op_array=0x1003a07b0) at
> /root/build/php-4.3.4/Zend/zend_execute.c:1660
> #9 0xffffffff7baeabe4 in execute (op_array=0x1003af0a0) at
> /root/build/php-4.3.4/Zend/zend_execute.c:1660
> #10 0xffffffff7baeabe4 in execute (op_array=0x10038f220) at
> /root/build/php-4.3.4/Zend/zend_execute.c:1660
> #11 0xffffffff7bacde24 in zend_execute_scripts (type=8, retval=0x0,
> file_count=3)
> at /root/build/php-4.3.4/Zend/zend.c:884
> #12 0xffffffff7ba6dd08 in php_execute_script
> (primary_file=0xffffffff7fffef30)
> at /root/build/php-4.3.4/main/main.c:1729
> #13 0xffffffff7baf3914 in php_handler (r=0x10037df10)
> at /root/build/php-4.3.4/sapi/apache2handler/sapi_apache2.c:537
> #14 0x00000001000ac8a0 in ap_run_handler ()
> #15 0x00000001000ad798 in ap_invoke_handler ()
> #16 0x000000010007b6d0 in ap_process_request ()
> #17 0x00000001000712e4 in ap_process_http_connection ()
> #18 0x00000001000c55b8 in ap_run_process_connection ()
> #19 0x00000001000c5c18 in ap_process_connection ()
> #20 0x00000001000a8e28 in child_main ()
> #21 0x00000001000a9030 in make_child ()
> #22 0x00000001000a92a4 in startup_children ()
> #23 0x00000001000a9da8 in ap_mpm_run ()
> #24 0x00000001000b79d8 in main ()
> (gdb) quit
> [EMAIL PROTECTED] httpd]
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[EMAIL PROTECTED] httpd]# gdb /home/httpd/bin/httpd
GNU gdb 5.3
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 "sparcv9-sun-solaris2"...(no debugging symbols found)...
(gdb) run -X
Starting program: /home/httpd/bin/httpd -X
(no debugging symbols found)...(no debugging symbols found)...(no debugging symbols
found)...
(no debugging symbols found)...
((Then I hit a page I knew would crash Apache))
Program received signal SIGSEGV, Segmentation fault.
0xffffffff7bacedcc in zend_parse_arg_impl (arg=0x1003853d0, va=0xffffffff7ffe3a78,
spec=0xffffffff7ffe3a48)
at /root/build/php-4.3.4/Zend/zend_API.c:259
259 *p = Z_LVAL_PP(arg);
(gdb) bt
#0 0xffffffff7bacedcc in zend_parse_arg_impl (arg=0x1003853d0, va=0xffffffff7ffe3a78,
spec=0xffffffff7ffe3a48)
at /root/build/php-4.3.4/Zend/zend_API.c:259
#1 0xffffffff7bacfa54 in zend_parse_arg (arg_num=4, arg=0x1003853d0,
va=0xffffffff7ffe3a78,
spec=0xffffffff7ffe3a48, quiet=0) at /root/build/php-4.3.4/Zend/zend_API.c:439
#2 0xffffffff7bacff40 in zend_parse_va_args (num_args=0, type_spec=0xffffffff7bb6906c
"ll",
va=0xffffffff7ffe3a78, flags=0) at /root/build/php-4.3.4/Zend/zend_API.c:524
#3 0xffffffff7bad032c in zend_parse_parameters (num_args=4,
type_spec=0xffffffff7bb69068 "ssz|ll")
at /root/build/php-4.3.4/Zend/zend_API.c:551
#4 0xffffffff7b9493cc in php_pcre_match (ht=4, return_value=0x1008c4c60,
this_ptr=0x0, return_value_used=0,
global=1) at /root/build/php-4.3.4/ext/pcre/php_pcre.c:375
#5 0xffffffff7b94a464 in zif_preg_match_all (ht=4, return_value=0x1008c4c60,
this_ptr=0x0, return_value_used=0)
at /root/build/php-4.3.4/ext/pcre/php_pcre.c:608
#6 0xffffffff7baea870 in execute (op_array=0x1008ac670) at
/root/build/php-4.3.4/Zend/zend_execute.c:1616
#7 0xffffffff7baeabe4 in execute (op_array=0x100884c20) at
/root/build/php-4.3.4/Zend/zend_execute.c:1660
#8 0xffffffff7baeabe4 in execute (op_array=0x1003a07d0) at
/root/build/php-4.3.4/Zend/zend_execute.c:1660
#9 0xffffffff7baeabe4 in execute (op_array=0x1003af0c0) at
/root/build/php-4.3.4/Zend/zend_execute.c:1660
#10 0xffffffff7baeabe4 in execute (op_array=0x10038f230) at
/root/build/php-4.3.4/Zend/zend_execute.c:1660
#11 0xffffffff7bacde24 in zend_execute_scripts (type=8, retval=0x0, file_count=3)
at /root/build/php-4.3.4/Zend/zend.c:884
#12 0xffffffff7ba6dd08 in php_execute_script (primary_file=0xffffffff7fffef20)
at /root/build/php-4.3.4/main/main.c:1729
#13 0xffffffff7baf3914 in php_handler (r=0x10037e6e0)
at /root/build/php-4.3.4/sapi/apache2handler/sapi_apache2.c:537
#14 0x00000001000ac8a0 in ap_run_handler ()
#15 0x00000001000ad798 in ap_invoke_handler ()
#16 0x000000010007b6d0 in ap_process_request ()
#17 0x00000001000712e4 in ap_process_http_connection ()
#18 0x00000001000c55b8 in ap_run_process_connection ()
#19 0x00000001000c5c18 in ap_process_connection ()
#20 0x00000001000a8e28 in child_main ()
#21 0x00000001000a9030 in make_child ()
#22 0x00000001000a92a4 in startup_children ()
#23 0x00000001000a9da8 in ap_mpm_run ()
#24 0x00000001000b79d8 in main ()
(gdb) print (char
*)(executor_globals.function_state_ptr->function)->common.function_name
$1 = 0xffffffff7bb69250 "preg_match_all"
(gdb) frame 6
#6 0xffffffff7baea870 in execute (op_array=0x1008ac670) at
/root/build/php-4.3.4/Zend/zend_execute.c:1616
1616
((zend_internal_function *)
EX(function_state).function)->handler(EX(opline)->extended_value,
EX(Ts)[EX(opline)->result.u.var].var.ptr, EX(object).ptr, return_value_used TSRMLS_CC);
(gdb) print (char
*)(executor_globals.function_state_ptr->function)->common.function_name
$2 = 0xffffffff7bb69250 "preg_match_all"
(gdb) frame 7
#7 0xffffffff7baeabe4 in execute (op_array=0x100884c20) at
/root/build/php-4.3.4/Zend/zend_execute.c:1660
1660
zend_execute(EG(active_op_array) TSRMLS_CC);
(gdb) print (char
*)(executor_globals.function_state_ptr->function)->common.function_name
$3 = 0xffffffff7bb69250 "preg_match_all"
(gdb) frame 8
#8 0xffffffff7baeabe4 in execute (op_array=0x1003a07d0) at
/root/build/php-4.3.4/Zend/zend_execute.c:1660
1660
zend_execute(EG(active_op_array) TSRMLS_CC);
(gdb) print (char
*)(executor_globals.function_state_ptr->function)->common.function_name
$4 = 0xffffffff7bb69250 "preg_match_all"
(gdb) frame 9
#9 0xffffffff7baeabe4 in execute (op_array=0x1003af0c0) at
/root/build/php-4.3.4/Zend/zend_execute.c:1660
1660
zend_execute(EG(active_op_array) TSRMLS_CC);
(gdb) print (char
*)(executor_globals.function_state_ptr->function)->common.function_name
$5 = 0xffffffff7bb69250 "preg_match_all"
(gdb) frame 10
#10 0xffffffff7baeabe4 in execute (op_array=0x10038f230) at
/root/build/php-4.3.4/Zend/zend_execute.c:1660
1660
zend_execute(EG(active_op_array) TSRMLS_CC);
(gdb) print (char
*)(executor_globals.function_state_ptr->function)->common.function_name
$6 = 0xffffffff7bb69250 "preg_match_all"
(gdb) frame 11
#11 0xffffffff7bacde24 in zend_execute_scripts (type=8, retval=0x0, file_count=3)
at /root/build/php-4.3.4/Zend/zend.c:884
884 zend_execute(EG(active_op_array) TSRMLS_CC);
(gdb) print (char
*)(executor_globals.function_state_ptr->function)->common.function_name
$7 = 0xffffffff7bb69250 "preg_match_all"
(gdb) frame 12
#12 0xffffffff7ba6dd08 in php_execute_script (primary_file=0xffffffff7fffef20)
at /root/build/php-4.3.4/main/main.c:1729
1729 retval = (zend_execute_scripts(ZEND_REQUIRE TSRMLS_CC, NULL,
3, prepend_file_p, primary_file, append_file_p) == SUCCESS);
(gdb) print (char
*)(executor_globals.function_state_ptr->function)->common.function_name
$8 = 0xffffffff7bb69250 "preg_match_all"
(gdb) quit
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