From: tim at merkworx dot com
Operating system: Red Hat Enterprise Linux ES rele
PHP version: 5.1.0RC1
PHP Bug Type: Reproducible crash
Bug description: Crash with unknown cause, any code may cause it
Description:
------------
The problem I have been experiencing seems to have been happening a bit
and has been reported here a few times, but never gets resolved because of
lack of information.
I am running RHEL 3 with MySQL 4.1.13 and have tried PHP 5.0.4, 5.1.0RC3
and Apache 2.0.54 and 2.1.8-beta (both with threaded and non-threaded
mpms), all combinations of the above result in errors like:
[Mon Oct 03 15:31:02 2005] [notice] child pid 11359 exit signal
Segmentation fault (11), possible coredump in /tmp
[Mon Oct 03 15:31:05 2005] [notice] child pid 20475 exit signal
Segmentation fault (11), possible coredump in /tmp
[Mon Oct 03 15:31:10 2005] [notice] child pid 25795 exit signal
Segmentation fault (11), possible coredump in /tmp
I have attached one of the GDB back traces (using the command "thread
apply all bt full" inside GDB as these cores were created with a threaded
mpm.
My PHP configure line looks like:
'./configure' '--prefix=/wwwroot2/php5' '--with-apxs2=/wwwroot2/bin/apxs'
'--with-zlib' '--with-bz2' '--with-db4' '--enable-exif'
'--with-mysql=/usr' '--with-gd' '--with-xmlrpc'
'--with-mysqli=/usr/bin/mysql_config' '--with-curl' '--with-inifile'
'--with-jpeg-dir=/usr' '--with-png-dir=/usr' '--with-zlib-dir=/usr'
'--with-freetype-dir=/usr' '--enable-gd-native-ttf' '--with-gettext'
'--enable-mbstring'
And my Apache configure line (for 2.1.8-beta) looks like:
"./configure" "--prefix=/wwwroot2" "--enable-dav=shared"
"--enable-dav-fs=shared" "--enable-mime-magic=shared"
"--enable-rewrite=shared" "--enable-so" "--enable-ssl" "--with-mpm=event"
"--enable-nonportable-atomics=yes"
Finally - I am not sure if my backtrace is acceptable. If not, maybe I
need to compile PHP and Apache with debug symbols or something? (forgive
me please, I have no idea when it comes to this).
Reproduce code:
---------------
I have been unable to produce code thate reproduces the crashes.
It does appear the MySQLi extension causes the segfaults constantly,
though.
Actual result:
--------------
#0 0x43668ba1 in __read_nocancel () from /lib/tls/libpthread.so.0
No symbol table info available.
#1 0x080ad401 in ap_mpm_pod_check (pod=0xfffffe00) at pod.c:54
c = 0 '\0'
fd = 4
rc = -512
#2 0x080ab8f6 in child_main (child_num_arg=-512) at event.c:1494
threads = (apr_thread_t **) 0x82c72d8
rv = 16
ts = (thread_starter *) 0x816bb80
thread_attr = (apr_threadattr_t *) 0x816bb90
start_thread_id = (apr_thread_t *) 0x816bbc8
#3 0x080aba5e in make_child (s=0x80ee1d8, slot=1) at event.c:1578
pid = -1082867405
#4 0x080abe57 in perform_idle_server_maintenance () at event.c:1765
status = 1
any_dying_threads = 0
any_dead_threads = 0
all_dead_threads = 1
i = 0
j = -1082867405
idle_thread_count = 74
ps = (process_score *) 0xb4ab3074
free_length = 1
totally_free_length = 1
free_slots = {1, 0, 0, 0, 0, 0, 0, 0, 1130473580, 1000000, 0,
1130461011, 0, 0, 0, 0, -1082867104, 0, 1000000, 0, 0, 0, -1082867048,
-1082867008,
135170472, 0, -1082867048, 134731107, 1000000, 0, 2, 25}
last_non_dead = 5
total_non_dead = 6
active_thread_count = 75
#5 0x080ac101 in server_main_loop (remaining_children_to_start=0) at
event.c:1866
child_slot = 1
exitwhy = 6
status = 11
processed_status = 0
pid = {pid = -1, in = 0xbf74c2f8, out = 0x0, err = 0x0}
i = 25
#6 0x080ac24e in ap_mpm_run (_pconf=0x80e89a8, plog=0x8126aa0, s=0x0) at
event.c:1933
remaining_children_to_start = 0
#7 0x080676dc in main (argc=3, argv=0xbf74c404) at main.c:710
exit_status = 0
c = 0 '\0'
configtestonly = 0
confname = 0x80b5014 "conf/httpd.conf"
def_server_root = 0x80b5024 "/wwwroot2"
temp_error_log = 0x0
error = 0xfffffe00 <Address 0xfffffe00 out of bounds>
process = (process_rec *) 0x80e6a20
server_conf = (server_rec *) 0x80ee1d8
pglobal = (apr_pool_t *) 0x80e69a0
pconf = (apr_pool_t *) 0x80e89a8
plog = (apr_pool_t *) 0x8126aa0
ptemp = (apr_pool_t *) 0x80ee9c0
pcommands = (apr_pool_t *) 0x80ea9b0
opt = (apr_getopt_t *) 0x80eaa48
rv = -1082866860
mod = (module **) 0xbf74c354
optarg = 0x4369c9f3 "\201Ãå²\020"
signal_server = (apr_OFN_ap_signal_server_t *) 0x1
--
Edit bug report at http://bugs.php.net/?id=34711&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=34711&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=34711&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=34711&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=34711&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=34711&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=34711&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=34711&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=34711&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=34711&r=support
Expected behavior: http://bugs.php.net/fix.php?id=34711&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=34711&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=34711&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=34711&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=34711&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=34711&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=34711&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=34711&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=34711&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=34711&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=34711&r=mysqlcfg
