From: ramato at squiz dot net
Operating system: Redhat 7.3
PHP version: 4.3.2
PHP Bug Type: Reproducible crash
Bug description: Serialize segfaults in a rare instance
Description:
------------
I'm trying to track down a segfault to do with serializing an object.
I can't reproduce it with a small script so I'm not sure where to go from
here. Any suggestions, tips, helpful hints greatly appreciated.
It's part of a largish CMS which uses lots of circular references so
pasting an example isn't easy. I know that circular references are a
source of a lot of problems however all the circular references are being
removed in the __sleep function so this shouldn't be an issue.
Expected result:
----------------
Normal execution
Actual result:
--------------
(gdb) bt
#0 0x4023d67e in php_var_serialize_class_name (buf=0xbffddf20,
struc=0x8bd961c)
at /usr/src/php-4.3.2/ext/standard/var.c:416
#1 0x4023c899 in php_var_serialize_class (buf=0xbffddf20,
struc=0x8bd961c, retval_ptr=0x8b43dec, var_hash=0xbffddf30)
at /usr/src/php-4.3.2/ext/standard/var.c:430
#2 0x4023cdf5 in php_var_serialize_intern (buf=0xbffddf20,
struc=0x8bd961c, var_hash=0xbffddf30)
at /usr/src/php-4.3.2/ext/standard/var.c:549
#3 0x4023d05b in php_var_serialize (buf=0xbffddf20, struc=0x8bd961c,
var_hash=0xbffddf30)
at /usr/src/php-4.3.2/ext/standard/var.c:623
#4 0x4023d108 in zif_serialize (ht=1, return_value=0x88340d4,
this_ptr=0x0, return_value_used=1)
at /usr/src/php-4.3.2/ext/standard/var.c:646
#5 0x402c8947 in execute (op_array=0x8cb5da4) at
/usr/src/php-4.3.2/Zend/zend_execute.c:1606
(gdb) frame 5
#5 0x402c8947 in execute (op_array=0x8cb5da4) at
/usr/src/php-4.3.2/Zend/zend_execute.c:1606
1606 ((zend_internal_function *)
EX(function_state).function)->handler(EX(opline)->extended_value,
EX(Ts)[EX(opline)->result.u.var].var.ptr, EX(object).ptr,
return_value_used TSRMLS_CC);
(gdb) print (char
*)(executor_globals.function_state_ptr->function)->common.function_name
$1 = 0x4030831b "serialize"
--
Edit bug report at http://bugs.php.net/?id=24196&edit=1
--
Try a CVS snapshot: http://bugs.php.net/fix.php?id=24196&r=trysnapshot
Fixed in CVS: http://bugs.php.net/fix.php?id=24196&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=24196&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=24196&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=24196&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=24196&r=support
Expected behavior: http://bugs.php.net/fix.php?id=24196&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=24196&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=24196&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=24196&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=24196&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=24196&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=24196&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=24196&r=gnused
