From:             igmar at palsenberg dot com
Operating system: Linux 2.6.x
PHP version:      4CVS-2005-12-22 (CVS)
PHP Bug Type:     Scripting Engine problem
Bug description:  Zend engine loops

Description:
------------
The ZE loops at certain code. I haven't found the actual code that
triggers it, but it show up frequently when using phpMyAdmin.

Configure line :
./configure' '--with-apache=/home/igmar/OWN/lamp-ssl/apache_1.3.34'
'--with-gd' '--with-zlib' '--with-kerberos' '--with-openssl'
'--enable-gd-native-ttf' '--with-freetype' '--with-freetype-dir=/usr'
'--enable-track-vars' '--with-freetype' '--with-mysql=/usr'
'--enable-sockets' '--with-config-file-path=/etc/httpsd'
'--enable-memory-limit' '--enable-sysvshm' '--enable-sysvsem'
'--with-domxml' '--with-dom' '--enable-ftp' '--with-openssl' '--with-db4'
'--with-gettext' '--with-pdflib' '--with-jpeg-dir=/usr'
'--with-tiff-dir=/usr' '--with-png-dir=/usr' '--with-ming=/usr'
'--with-xmlrpc' '--with-readline' '--enable-xslt' '--with-xslt-sablot'
'--enable-mbstring' '--with-imap' '--with-imap-ssl'

Apache is 1.3.34 + latest mod_ssl

Reproduce code:
---------------
Unknown

Actual result:
--------------
2 backtraces when the process starts looping. If there is a way that I can
find out which PHP code it is actually executing, I'll be happy to find
out.

4.3.x didn't exhibit this behaviour, I haven't tested 4.4.0.

BT #1

#0  0x080f9326 in zend_hash_find (ht=0x84e53cc, arKey=0x87904bc "buffer",
    nKeyLength=7, pData=0xbfcb22c8)
    at /home/igmar/OWN/lamp-ssl/php-src/Zend/zend_hash.c:896
#1  0x080ff813 in zend_fetch_var_address (opline=0x87c7450,
Ts=0xbfcb2310,
    type=0) at /home/igmar/OWN/lamp-ssl/php-src/Zend/zend_execute.c:594
#2  0x08101c26 in execute (op_array=0x8747e2c)
    at /home/igmar/OWN/lamp-ssl/php-src/Zend/zend_execute.c:1302
#3  0x08104405 in execute (op_array=0x85b935c)
    at /home/igmar/OWN/lamp-ssl/php-src/Zend/zend_execute.c:2272
#4  0x080f529f in zend_execute_scripts (type=8, retval=0x0, file_count=3)
    at /home/igmar/OWN/lamp-ssl/php-src/Zend/zend.c:934
#5  0x080d370c in php_execute_script (primary_file=0xbfcbc650)
    at /home/igmar/OWN/lamp-ssl/php-src/main/main.c:1753
#6  0x0810c558 in apache_php_module_main (r=0x858e454,
display_source_mode=0)
    at /home/igmar/OWN/lamp-ssl/php-src/sapi/apache/sapi_apache.c:54
#7  0x080cbc80 in send_php (r=0x858e454, display_source_mode=0,
filename=0x0)
    at /home/igmar/OWN/lamp-ssl/php-src/sapi/apache/mod_php4.c:627
#8  0x080cbf0e in send_parsed_php (r=0x858e454)
    at /home/igmar/OWN/lamp-ssl/php-src/sapi/apache/mod_php4.c:642
#9  0x0821d7c8 in ap_invoke_handler ()
#10 0x08232e7e in process_request_internal ()
#11 0x08232edd in ap_process_request ()
#12 0x08229ceb in child_main ()#13 0x08229fd4 in make_child ()
#14 0x0822a30d in perform_idle_server_maintenance ()
#15 0x0822a91a in standalone_main ()
#16 0x0822af3d in main ()

BT #2 :

0x080f8536 in zend_hash_add_or_update (ht=0x864cb2c, arKey=0x85cee4c
"offset",
    nKeyLength=7, pData=0xbfcb1314, nDataSize=4, pDest=0xbfcb1318,
flag=1)
    at /home/igmar/OWN/lamp-ssl/php-src/Zend/zend_hash.h:197
197                     h += (h << 5);
#0  0x080f8536 in zend_hash_add_or_update (ht=0x864cb2c,
    arKey=0x85cee4c "offset", nKeyLength=7, pData=0xbfcb1314,
nDataSize=4,
    pDest=0xbfcb1318, flag=1)
    at /home/igmar/OWN/lamp-ssl/php-src/Zend/zend_hash.h:197
#1  0x080ff9df in zend_fetch_var_address (opline=0x87bd13c,
Ts=0xbfcb1360,
    type=1) at /home/igmar/OWN/lamp-ssl/php-src/Zend/zend_execute.c:609
#2  0x08101c5b in execute (op_array=0x8604e30)
    at /home/igmar/OWN/lamp-ssl/php-src/Zend/zend_execute.c:1281
#3  0x08103f93 in execute (op_array=0x8747e2c)
    at /home/igmar/OWN/lamp-ssl/php-src/Zend/zend_execute.c:1719
#4  0x08104405 in execute (op_array=0x85b935c)
    at /home/igmar/OWN/lamp-ssl/php-src/Zend/zend_execute.c:2272
#5  0x080f529f in zend_execute_scripts (type=8, retval=0x0, file_count=3)
    at /home/igmar/OWN/lamp-ssl/php-src/Zend/zend.c:934
#6  0x080d370c in php_execute_script (primary_file=0xbfcbc650)
    at /home/igmar/OWN/lamp-ssl/php-src/main/main.c:1753
#7  0x0810c558 in apache_php_module_main (r=0x858e454,
display_source_mode=0)
    at /home/igmar/OWN/lamp-ssl/php-src/sapi/apache/sapi_apache.c:54
#8  0x080cbc80 in send_php (r=0x858e454, display_source_mode=0,
filename=0x0)
    at /home/igmar/OWN/lamp-ssl/php-src/sapi/apache/mod_php4.c:627
#9  0x080cbf0e in send_parsed_php (r=0x858e454)
    at /home/igmar/OWN/lamp-ssl/php-src/sapi/apache/mod_php4.c:642
#10 0x0821d7c8 in ap_invoke_handler ()
#11 0x08232e7e in process_request_internal ()
#12 0x08232edd in ap_process_request ()
#13 0x08229ceb in child_main ()
#14 0x08229fd4 in make_child ()
#15 0x0822a30d in perform_idle_server_maintenance ()
#16 0x0822a91a in standalone_main ()
#17 0x0822af3d in main ()


-- 
Edit bug report at http://bugs.php.net/?id=35773&edit=1
-- 
Try a CVS snapshot (PHP 4.4): 
http://bugs.php.net/fix.php?id=35773&r=trysnapshot44
Try a CVS snapshot (PHP 5.1): 
http://bugs.php.net/fix.php?id=35773&r=trysnapshot51
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=35773&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=35773&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=35773&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=35773&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=35773&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=35773&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=35773&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=35773&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=35773&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=35773&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=35773&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=35773&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=35773&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=35773&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=35773&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=35773&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=35773&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=35773&r=mysqlcfg

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