From: rdaggett at insight dot com
Operating system: RH ES 4.0 Update 2
PHP version: 4.4.2
PHP Bug Type: Unknown/Other Function
Bug description: random segmentation faults
Description:
------------
The issue:
when I load a php file in a browser we get random segmentation faults
The environment
RedHat ES 4.0 kernel 2.6.9-22.0.2.ELsmp
php 4.4.2
apache 2.0.55
apache config command:
[EMAIL PROTECTED] tmp]# httpd -V
Server version: Apache/2.0.55
Server built: Mar 17 2006 16:06:14
Server's Module Magic Number: 20020903:11
Architecture: 32-bit
Server compiled with....
-D APACHE_MPM_DIR="server/mpm/prefork"
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_SYSVSEM_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D HTTPD_ROOT="/etc/httpd"
-D SUEXEC_BIN="/usr/sbin/suexec"
-D DEFAULT_PIDLOG="/var/run/apache2.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_LOCKFILE="logs/accept.lock"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="conf/mime.types"
-D SERVER_CONFIG_FILE="conf/httpd.conf"
php config command:
'./configure' '--build=i686-redhat-linux-gnu'
'--host=i686-redhat-linux-gnu' '--target=i386-redhat-linux-gnu'
'--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr'
'--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc'
'--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib'
'--libexecdir=/usr/libexec' '--localstatedir=/var'
'--sharedstatedir=/usr/com' '--mandir=/usr/share/man'
'--infodir=/usr/share/info' '--cache-file=../config.cache'
'--with-config-file-path=/etc' '--with-config-file-scan-dir=/etc/php.d'
'--enable-force-cgi-redirect' '--disable-debug' '--enable-pic'
'--disable-rpath' '--enable-inline-optimization' '--with-bz2'
'--with-db4=/usr' '--with-curl' '--with-exec-dir=/usr/bin'
'--with-freetype-dir=/usr' '--with-png-dir=/usr' '--with-gd=shared'
'--enable-gd-native-ttf' '--without-gdbm' '--with-gettext'
'--with-ncurses=shared' '--with-gmp' '--with-iconv' '--with-jpeg-dir=/usr'
'--with-openssl' '--with-png' '--with-pspell' '--with-xml'
'--with-expat-dir=/usr' '--with-dom=shared,/usr' '--with-dom-xslt=/usr'
'--with-dom-exslt=/usr' '--with-xmlrpc=shared' '--with-pcre-regex=/usr'
'--with-zlib' '--with-layout=GNU' '--enable-bcmath' '--enable-exif'
'--enable-ftp' '--enable-magic-quotes' '--enable-sockets'
'--enable-sysvsem' '--enable-sysvshm' '--enable-track-vars'
'--enable-trans-sid' '--enable-yp' '--enable-wddx'
'--with-pear=/usr/share/pear' '--with-imap=shared' '--with-imap-ssl'
'--with-kerberos' '--with-ldap=shared' '--with-mysql=shared,/usr'
'--with-oci8=shared' '--with-mssql=shared' '--with-pgsql=shared'
'--with-snmp=shared,/usr' '--with-snmp=shared' '--with-sybase=shared'
'--with-mcrypt=shared' '--enable-ucd-snmp-hack'
'--with-unixODBC=shared,/usr' '--enable-memory-limit' '--enable-shmop'
'--enable-calendar' '--enable-dbx' '--enable-dio'
'--enable-mbstring=shared' '--enable-mbstr-enc-trans' '--enable-mbregex'
'--with-mime-magic=/usr/share/file/magic.mime'
'--with-apxs2=/usr/sbin/apxs'
Actual result:
--------------
back trace:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1208018496 (LWP 18482)]
0x01142001 in zend_llist_add_element () from
/etc/httpd/modules/libphp4.so
(gdb) bt
#0 0x01142001 in zend_llist_add_element () from
/etc/httpd/modules/libphp4.so
#1 0x011556bf in zend_assign_to_variable_reference ()
from /etc/httpd/modules/libphp4.so
#2 0x01156ee1 in zend_assign_to_variable_reference ()
from /etc/httpd/modules/libphp4.so
#3 0x0115787a in execute () from /etc/httpd/modules/libphp4.so
#4 0x011585ac in execute () from /etc/httpd/modules/libphp4.so
#5 0x011585ac in execute () from /etc/httpd/modules/libphp4.so
#6 0x011585ac in execute () from /etc/httpd/modules/libphp4.so
#7 0x011585ac in execute () from /etc/httpd/modules/libphp4.so
#8 0x011585ac in execute () from /etc/httpd/modules/libphp4.so
#9 0x011585ac in execute () from /etc/httpd/modules/libphp4.so
#10 0x011585ac in execute () from /etc/httpd/modules/libphp4.so
#11 0x011585ac in execute () from /etc/httpd/modules/libphp4.so
#12 0x011585ac in execute () from /etc/httpd/modules/libphp4.so
#13 0x011497c0 in zend_execute_scripts () from
/etc/httpd/modules/libphp4.so
#14 0x0111ef5e in php_execute_script () from
/etc/httpd/modules/libphp4.so
#15 0x00000000 in ?? ()
(gdb) frame 3
#3 0x0115787a in execute () from /etc/httpd/modules/libphp4.so
(gdb) q
strace:
getcwd("/", 4096) = 2
lstat64("/u", {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0
lstat64("/u/bp", {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0
lstat64("/u/bp/localdata", {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0
lstat64("/u/bp/localdata/phplog", {st_mode=S_IFREG|0666, st_size=63287136,
...})
= 0
open("/u/bp/localdata/phplog", O_WRONLY|O_APPEND|O_CREAT, 0666) = 92
fstat64(92, {st_mode=S_IFREG|0666, st_size=63287136, ...}) = 0
lseek(92, 0, SEEK_CUR) = 0
lseek(92, 0, SEEK_CUR) = 0
write(92, "\n[319b28a4{198.187.200.254}:Mar:"..., 85) = 85
close(92) = 0
chmod("/u/bp/localdata/phplog", 0666) = 0
select(88, [], [87], [], {10, 0}) = 1 (out [87], left {10, 0})
send(87, "\0\0\f\372~SETOBJ;session "..., 3326, 0) = 3326
select(88, [87], [], [], {10, 0}) = 1 (in [87], left {9, 992000})
recv(87, "\0\0\0\4", 4, 0) = 4
select(88, [87], [], [], {10, 0}) = 1 (in [87], left {10, 0})
recv(87, "~OK~", 4, 0) = 4
shutdown(87, 1 /* send */) = 0
close(87) = 0
stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=130, ...}) = 0
open("/etc/localtime", O_RDONLY) = 87
fstat64(87, {st_mode=S_IFREG|0644, st_size=130, ...}) = 0
fstat64(87, {st_mode=S_IFREG|0644, st_size=130, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0xb7
e21000
read(87, "TZif\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\3\0\0\0\3\0"...,
4096) = 13
0
close(87) = 0
munmap(0xb7e21000, 4096) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
chdir("/etc/httpd") = 0
rt_sigaction(SIGSEGV, {SIG_DFL}, {SIG_DFL}, 8) = 0
kill(13993, SIGSEGV) = 0
sigreturn() = ? (mask now [])
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
Process 13993 detached
--
Edit bug report at http://bugs.php.net/?id=36850&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=36850&r=trysnapshot44
Try a CVS snapshot (PHP 5.1):
http://bugs.php.net/fix.php?id=36850&r=trysnapshot51
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=36850&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=36850&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=36850&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=36850&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=36850&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=36850&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=36850&r=support
Expected behavior: http://bugs.php.net/fix.php?id=36850&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=36850&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=36850&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=36850&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36850&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=36850&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=36850&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=36850&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=36850&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=36850&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=36850&r=mysqlcfg
