[PHP-DEV] PHP 4.0 Bug #7686: Segmentation fault in complex pages when using sessions From: paul <email protected>
Date: 11/07/00

From: paul <email protected>
Operating system: Red Hat Linux release 6.2
PHP version: 4.0.3pl1
PHP Bug Type: *Session related
Bug description: Segmentation fault in complex pages when using sessions

Complex script that uses 2 include files and does many MySQL selects. Once I added in some session support and started storing some user preferences in an array I put into the session I started getting segmentation faults.

Compile info:

#PHP
./configure --with-mysql=/usr/local/mysql \
   --with-apache=../apache_1.3.14 \
   --enable-track-vars --enable-debug

#Apache
./configure \
   --activate-module=src/modules/php4/libphp4.a \
   --enable-module=php4 \
   --prefix=/usr/local/apache

Backtrace:

(gdb) run -X
Starting program: /usr/local/apache/bin/httpd -X
(no debugging symbols found)...
Program received signal SIGSEGV, Segmentation fault.
0x401370b9 in chunk_free (ar_ptr=0x401cbd60, p=0x882322e0) at malloc.c:3094
3094 malloc.c: No such file or directory.
(gdb) bt
#0 0x401370b9 in chunk_free (ar_ptr=0x401cbd60, p=0x882322e0) at malloc.c:3094
#1 0x40136fba in __libc_free (mem=0x82322e8) at malloc.c:3023
#2 0x80cdaec in _efree ()
#3 0x80d80e4 in _zval_dtor ()
#4 0x80d3c4f in destroy_op_array ()
#5 0x80d3b69 in destroy_zend_function ()
#6 0x80dba77 in zend_hash_clean ()
#7 0x80dbbbf in zend_hash_apply ()
#8 0x80d2618 in shutdown_executor ()
#9 0x80d8a87 in zend_deactivate ()
#10 0x807b59d in php_request_shutdown ()
#11 0x80797ea in sapi_apache_send_headers ()
#12 0x81029ae in ap_run_cleanup ()
#13 0x81011dd in ap_clear_pool ()
#14 0x8101251 in ap_destroy_pool ()
#15 0x81011cc in ap_clear_pool ()
#16 0x811099f in ap_child_terminate ()
#17 0x8110f3c in ap_child_terminate ()
#18 0x8111099 in ap_child_terminate ()
#19 0x81116c6 in ap_child_terminate ()
#20 0x8111e53 in main ()
#21 0x400f59cb in __libc_start_main (main=0x8111b0c <main>, argc=2, argv=0xbffffb14, init=0x80606dc <_init>,
    fini=0x813f79c <_fini>, rtld_fini=0x4000ae60 <_dl_fini>, stack_end=0xbffffb0c) at ../sysdeps/generic/libc-start.c:92

I can provide script but it is very lengthy. Hopefully the backtrace can give some information. Thanks much. 

-- 
Edit Bug report at: http://bugs.php.net/?id=7686&edit=1

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