#38348 [NEW]: Segfault on AMD64 Arch - using mm session_handler

From: archer at priorityonline dot net Operating system: Debian AMD64 PHP version: 5.1.4 PHP Bug Type: Session related Bug description: Segfault on AMD64 Arch - using mm session_handler Description: ------------ Not sure whats Causing this, but PHP seems to be randomly Segfaulting on my box. php-fcgi[29112]: segfault at 0000000000000000 rip 000000000055e503 rsp 00007fff7546d970 error 4 php-fcgi[17660] general protection rip:55e960 rsp:7fff52046690 error:0 I've attached a back trace below , let me know if u need anymore information. Seems to be related to the use of the mm session handler, but can't be sure. --Keth Reproduce code: --------------- -- Configured With -- Configure Command => ./configure --prefix=/usr --with-pear --enable-shared --with-mm --with-mysqli=/usr/bin/mysql_config --with-mysql=/usr --enable-fastcgi --enable-pcntl --enable-ftp --with-gd=/usr --with-jpeg-dir=/usr --with-png-dir=/usr --enable-gd-native-ttf --with-zlib-dir=/usr --with-openssl=/usr --with-zlib=/usr --enable-force-cgi-redirect --with-bz2=/usr --with-config-file-path=/etc/php --enable-track-vars --enable-mbstring --with-pdo-mysql=/usr --with-pdo-pgsql --with-imap=/usr --enable-sockets --with-kerberos --with-imap-ssl --with-gettext --with-pgsql=/usr --with-pdo-pgsql=/usr --with-pear=/usr/lib/php/PEAR --with-curl Expected result: ---------------- Code Should run fine. Actual result: -------------- #0 ps_sd_lookup (data=<value optimized out>, key=0x1358218 "Jflnxj3OjFZGLcFuZV,W,2", rw=0) at /root/php-5.1.4/ext/session/mod_mm.c:189 #1 0x000000000055ed07 in ps_read_mm (mod_data=<value optimized out>, key=0x1358218 "Jflnxj3OjFZGLcFuZV,W,2", val=0x7fff52046740, vallen=0x7fff5204675c) at /root/php-5.1.4/ext/session/mod_mm.c:328 #2 0x000000000055bbb0 in php_session_start () at /root/php-5.1.4/ext/session/session.c:772 #3 0x000000000055c229 in zif_session_start (ht=20283928, return_value=0x1358218, return_value_ptr=0x16, this_ptr=0x16, return_value_used=-16843009) at /root/php-5.1.4/ext/session/session.c:1696 #4 0x000000000067c22c in zend_do_fcall_common_helper_SPEC (execute_data=0x7fff52046a90) at /root/php-5.1.4/Zend/zend_vm_execute.h:200 #5 0x000000000067b923 in execute (op_array=0x1380ab8) at /root/php-5.1.4/Zend/zend_vm_execute.h:92 #6 0x000000000067bd9b in zend_do_fcall_common_helper_SPEC (execute_data=0x7fff52047030) at /root/php-5.1.4/Zend/zend_vm_execute.h:234 #7 0x000000000067b923 in execute (op_array=0xc4b5d8) at /root/php-5.1.4/Zend/zend_vm_execute.h:92 #8 0x0000000000680f99 in ZEND_INCLUDE_OR_EVAL_SPEC_CONST_HANDLER (execute_data=0x7fff5204a7b0) at /root/php-5.1.4/Zend/zend_vm_execute.h:1971 #9 0x000000000067b923 in execute (op_array=0xf44878) at /root/php-5.1.4/Zend/zend_vm_execute.h:92 #10 0x0000000000661423 in zend_execute_scripts (type=8, retval=0x178, file_count=3) at /root/php-5.1.4/Zend/zend.c:1109 #11 0x0000000000625a68 in php_execute_script (primary_file=0x7fff5204f310) at /root/php-5.1.4/main/main.c:1732 #12 0x00000000006eda55 in main (argc=3, argv=0x7fff5204f538) at /root/php-5.1.4/sapi/cgi/cgi_main.c:1608 -- Edit bug report at http://bugs.php.net/?id=38348&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=38348&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=38348&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=38348&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=38348&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=38348&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=38348&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=38348&r=needscript Try newer version: http://bugs.php.net/fix.php?id=38348&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=38348&r=support Expected behavior: http://bugs.php.net/fix.php?id=38348&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=38348&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=38348&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=38348&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=38348&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=38348&r=dst IIS Stability: http://bugs.php.net/fix.php?id=38348&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=38348&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=38348&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=38348&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=38348&r=mysqlcfg