From: scottmacvicar at ntlworld dot com
Operating system: RHEL 4
PHP version: 5.2.1
PHP Bug Type: Unknown/Other Function
Bug description: Crash under load within memory manager
Description:
------------
Under high load we appear to be experiencing a crash when allocating
memory, I've been unable to track this down to a specific script and
when we compile in debug mode the crash simply doesn't happen.
This has only happened in the 5.2 branch.
We're using the worker MPM for Apache 2 and a few patches from 5.2.2
that we've backported to fix some thread safety issues.
Backtrace at the moment is as follows:
Thread 3 (process 12962):
#0 0x008b07a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
No symbol table info available.
#1 0x008f0c46 in kill () from /lib/tls/libc.so.6
No symbol table info available.
#2 0x0807e90d in sig_coredump (sig=12936) at mpm_common.c:1170
No locals.
#3 <signal handler called>
No symbol table info available.
#4 0x0092a652 in malloc_consolidate () from /lib/tls/libc.so.6
No symbol table info available.
#5 0x0092b643 in _int_malloc () from /lib/tls/libc.so.6
No symbol table info available.
#6 0x0092d401 in malloc () from /lib/tls/libc.so.6
No symbol table info available.
#7 0x011169cc in _zend_mm_alloc_int (heap=0xfffffff0, size=8192)
at /www/src/php-5.2.1/Zend/zend_alloc.c:1451
segment_size = 10420212
block_size = Variable "block_size" is not available.
I can't seem to pull out what scripts are running in what process at
the time of execution from the logs, I may have to write a quick
apache module to do this.
If nothing jumps out at anyone the just assign back to feedback and
I'll try to do some more tracing to see if I can find a reproduce
case.
--
Edit bug report at http://bugs.php.net/?id=40719&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=40719&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=40719&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=40719&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=40719&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=40719&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=40719&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=40719&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=40719&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=40719&r=support
Expected behavior: http://bugs.php.net/fix.php?id=40719&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=40719&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=40719&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=40719&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40719&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=40719&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=40719&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=40719&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=40719&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=40719&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=40719&r=mysqlcfg
