I’m getting an obnoxious segfault in PHP 5.3.6 (compiled from source, Slackware 13.1 x86, VPS in Linode). It is happening in both apache and nginx (fpm). Finally managed to get a core dump:
0 0x083db383 in _zval_ptr_dtor ()
1 0x083f3c45 in zend_hash_destroy ()
2 0x083e6fba in _zval_dtor_func ()
3 0x083da69a in _zval_dtor ()
4 0x083db3df in _zval_ptr_dtor ()
5 0x083f3c45 in zend_hash_destroy ()
6 0x083e6fba in _zval_dtor_func ()
7 0x083da69a in _zval_dtor ()
8 0x083db3df in _zval_ptr_dtor ()
9 0x083f3c45 in zend_hash_destroy ()
10 0x08406091 in zend_object_std_dtor ()
11 0x0840632e in zend_objects_free_object_storage ()
12 0x0840a44c in zend_objects_store_del_ref_by_handle_ex ()
13 0x0840a23b in zend_objects_store_del_ref ()
14 0x083e6fe1 in _zval_dtor_func ()
15 0x083da69a in _zval_dtor ()
16 0x083db3df in _zval_ptr_dtor ()
17 0x083f3c45 in zend_hash_destroy ()
18 0x08406091 in zend_object_std_dtor ()
19 0x0840632e in zend_objects_free_object_storage ()
20 0x0840a44c in zend_objects_store_del_ref_by_handle_ex ()
21 0x0840a23b in zend_objects_store_del_ref ()
22 0x083e6fe1 in _zval_dtor_func ()
23 0x083da69a in _zval_dtor ()
24 0x083db3df in _zval_ptr_dtor ()
25 0x083f3c45 in zend_hash_destroy ()
26 0x083e6fba in _zval_dtor_func ()
27 0x083da69a in _zval_dtor ()
28 0x083daed6 in shutdown_executor ()
29 0x083e86c8 in zend_deactivate ()
30 0x0838ebad in php_request_shutdown ()
31 0x084a3f26 in main ()
I’m using the memcache, apc, and mongo extensions (compiled from source). I tried disabling apc, but no luck. My PHP configure:
./configure \
--prefix=/usr/local/php \
--enable-fpm \
--enable-inline-optimization \
--disable-magic-quotes \
--enable-mbstring \
--enable-mbregex \
--enable-safe-mode \
--enable-wddx=shared \
--enable-xml \
--with-gd \
--enable-gd-native-ttf \
--with-png-dir=/usr \
--with-jpeg-dir=/usr \
--with-freetype-dir=/usr \
--with-gettext \
--with-curl \
--with-mysql=/usr \
--with-mysqli=/usr/bin/mysql_config \
--with-regex=system \
--with-zlib-dir=/usr/lib \
--with-openssl \
--with-snmp \
--enable-ucd-snmp-hack
This happens only on one certain page of an application (code is too big to share). Looks like it’s failing on shutdown. I saw this bug report on the PHP tracker from about 6 or 7 years ago, but haven’t heard of anyone seeing it since.
What’s weird is that everything was working fine a few days ago until I deployed some changes to the app. It was nothing monolithic, and I wish I could pinpoint the exact commit, but there were about 5 commits between when it worked and the next time I realized it wasn’t working.
Can anyone make heads or tails of this, or should I submit a bug report and hope for the best?
Figured it out (sort of). Got the latest dev build (5.3-201105190430) from http://snaps.php.net/ and compiled & installed it. That fixed the problem (so apparently they know about it and have it queued for inclusion).
Thanks!