From:
Operating system: FreeBSD
PHP version: 5.2.14
Package: PostgreSQL related
Bug Type: Bug
Bug description:Core dump in _php_pgsql_notice_ptr_dtor
Description:
------------
On a high-traffic website PHP dumps core 1 to 2 times a day.
==
Oct 24 09:32:39 www3 kernel: pid 92149 (php), uid 80: exited on signal 10
(core
dumped)
Oct 24 11:00:04 www3 kernel: pid 1285 (php), uid 80: exited on signal 6
(core
dumped)
Oct 25 19:27:37 www3 kernel: pid 27511 (php), uid 80: exited on signal 11
(core
dumped)
==
The website uses normal pg_query() to do a lot of read-only queries, as
well as
pg_send_query() for asynchronous updates.
Perhaps the last is causing problems sporadically in pgsql's cleanup
routine?
PostgreSQL client libraries are version 9.0.1, but seen same issues with
8.4
Test script:
---------------
Not easy to reproduce.
Actual result:
--------------
www3# gdb /usr/local/bin/php php.core
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "amd64-marcel-freebsd"...
Core was generated by `php'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/libcrypt.so.3...done.
Loaded symbols for /lib/libcrypt.so.3
Reading symbols from /lib/libz.so.3...done.
Loaded symbols for /lib/libz.so.3
Reading symbols from /usr/local/pgsql/lib/libpq.so.5...done.
Loaded symbols for /usr/local/pgsql/lib/libpq.so.5
Reading symbols from /lib/libm.so.4...done.
Loaded symbols for /lib/libm.so.4
Reading symbols from /usr/local/lib/libxml2.so.5...done.
Loaded symbols for /usr/local/lib/libxml2.so.5
Reading symbols from /usr/local/lib/libiconv.so.3...done.
Loaded symbols for /usr/local/lib/libiconv.so.3
Reading symbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/libpthread.so.2...done.
Loaded symbols for /lib/libpthread.so.2
Reading symbols from /libexec/ld-elf.so.1...done.
Loaded symbols for /libexec/ld-elf.so.1
#0 _zend_mm_free_int (heap=0x870000, p=0x69) at /usr/home/max/tmp/php-
5.2.14/Zend/zend_alloc.c:1948
1948 size = ZEND_MM_BLOCK_SIZE(mm_block);
[New LWP 100171]
(gdb) bt
#0 _zend_mm_free_int (heap=0x870000, p=0x69) at /usr/home/max/tmp/php-
5.2.14/Zend/zend_alloc.c:1948
#1 0x00000000004a6371 in _php_pgsql_notice_ptr_dtor (ptr=0x870000) at
/usr/home/max/tmp/php-5.2.14/ext/pgsql/pgsql.c:379
#2 0x00000000005b1ee2 in zend_hash_clean (ht=0x85b848) at
/usr/home/max/tmp/php-5.2.14/Zend/zend_hash.c:552
#3 0x00000000004a6a90 in zm_deactivate_pgsql (type=8847360,
module_number=105)
at /usr/home/max/tmp/php-5.2.14/ext/pgsql/pgsql.c:578
#4 0x00000000005ab973 in module_registry_cleanup (module=0x870000) at
/usr/home/max/tmp/php-5.2.14/Zend/zend_API.c:1976
#5 0x00000000005b23b3 in zend_hash_reverse_apply (ht=0x85fb80,
apply_func=0x5ab950 <module_registry_cleanup>)
at /usr/home/max/tmp/php-5.2.14/Zend/zend_hash.c:755
#6 0x00000000005a6650 in zend_deactivate_modules () at
/usr/home/max/tmp/php-
5.2.14/Zend/zend.c:838
#7 0x0000000000565d4b in php_request_shutdown (dummy=0x870000) at
/usr/home/max/tmp/php-5.2.14/main/main.c:1478
#8 0x00000000006346d3 in main (argc=1, argv=0x7fffffffedc8) at
/usr/home/max/tmp/php-5.2.14/sapi/cgi/cgi_main.c:2062
(gdb)
--
Edit bug report at http://bugs.php.net/bug.php?id=53157&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=53157&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=53157&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=53157&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=53157&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=53157&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=53157&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=53157&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=53157&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=53157&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=53157&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=53157&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=53157&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=53157&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=53157&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=53157&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=53157&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=53157&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=53157&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=53157&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=53157&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=53157&r=mysqlcfg
