Re: [eAccelerator-developers] eA && PHP 5.1

[Hans R. <ha...@pa...>]

Bart Vanbrabant wrote:

>Sönke Ruempler wrote:
>  
>
>>eac...@li... <> wrote on :
>>
>>  
>>    
>>
>>>See http://httpd.apache.org/dev/debugging.html
>>>
>>>The way i do it is with gdb, running apache in single thread
>>>mode (run
>>>-X in gdb)
>>>
>>>You will probably need to isolate your development/debugging
>>>work on a
>>>webserver that does not serve any other reqs at that time.
>>>    
>>>      
>>>
>>Thx for instructions.
>>
>>Here the first output:
>>
>>(gdb) file /usr/sbin/httpd
>>Reading symbols from /usr/sbin/httpd...done.
>>Using host libthread_db library "/lib/libthread_db.so.1".
>>(gdb) set args -X
>>(gdb) run
>>Starting program: /usr/sbin/httpd -X
>>Reading symbols from shared object read from target memory...done.
>>Loaded system supplied DSO at 0xffffe000
>>[Thread debugging using libthread_db enabled]
>>[New Thread -1213249856 (LWP 18670)]
>>
>>Program received signal SIGSEGV, Segmentation fault.
>>[Switching to Thread -1213249856 (LWP 18670)]
>>_efree (ptr=0x0) at /usr/src/php-5.1.1/Zend/zend_alloc.c:286
>>286             CALCULATE_REAL_SIZE_AND_CACHE_INDEX(p->size);
>>(gdb)
>>  
>>    
>>
>
>When you get here, please type bt. It will generate a backtrace.
>
>g,
>
>Bart
>
>  
>

Its exactly the same point where it crashes here. I already have a 
backtrace of this particular case. This one is from 
eaccelerator.php?dump= with Smarty classes in the cache. Looks to me 
like the class entries get screwed somewhere.


Program received signal SIGSEGV, Segmentation fault.
_efree (ptr=0x0) at /usr/src/php-5.1.1/Zend/zend_alloc.c:286
286             CALCULATE_REAL_SIZE_AND_CACHE_INDEX(p->size);
(gdb) bt
#0  _efree (ptr=0x0) at /usr/src/php-5.1.1/Zend/zend_alloc.c:286
#1  0xb7429450 in dump_op_array (p=0xb640c8b8) at 
/usr/src/eaccelerator-cvs/eaccelerator/webui.c:801
#2  0xb742afb7 in eaccelerator_dump_all () at 
/usr/src/eaccelerator-cvs/eaccelerator/webui.c:1173
#3  0xb742c534 in zif_eaccelerator (ht=0, return_value=0x81b1854, 
return_value_ptr=0x0, this_ptr=0x0, return_value_used=0) at 
/usr/src/eaccelerator-cvs/eaccelerator/webui.c:1651
#4  0xb7b68b33 in zend_do_fcall_common_helper_SPEC 
(execute_data=0xbfaa4dc0) at zend_vm_execute.h:188
#5  0xb7b68389 in execute (op_array=0x81b16a4) at zend_vm_execute.h:88
#6  0xb7b43f7c in zend_execute_scripts (type=8, retval=0x0, 
file_count=3) at /usr/src/php-5.1.1/Zend/zend.c:1090
#7  0xb7b0977f in php_execute_script (primary_file=0xbfaa7140) at 
/usr/src/php-5.1.1/main/main.c:1704
#8  0xb7bc56be in apache_php_module_main (r=0x81a708c, 
display_source_mode=0) at /usr/src/php-5.1.1/sapi/apache/sapi_apache.c:53
#9  0xb7bc6237 in send_php (r=0x81a708c, display_source_mode=0, 
filename=0x0) at /usr/src/php-5.1.1/sapi/apache/mod_php5.c:644
#10 0xb7bc63f2 in send_parsed_php (r=0x81a708c) at 
/usr/src/php-5.1.1/sapi/apache/mod_php5.c:659
#11 0x0805411f in ap_invoke_handler ()
#12 0x080691c7 in process_request_internal ()
#13 0x08069226 in ap_process_request ()
#14 0x08060236 in child_main ()
#15 0x080603de in make_child ()
#16 0x08060544 in startup_children ()
#17 0x08060be4 in standalone_main ()
#18 0x08061402 in main ()