Edit report at http://bugs.php.net/bug.php?id=54491&edit=1
ID: 54491
User updated by: msamson at chowly dot com
Reported by: msamson at chowly dot com
-Summary: Crash when using mongodb or couchdb database
adapters
+Summary: Crash during shutdown sequence on apache module.
-Status: Feedback
+Status: Open
Type: Bug
Package: Reproducible crash
Operating System: Fedora 14 x64
PHP Version: 5.3.6
Block user comment: N
Private report: N
New Comment:
No, the crash also occurs when the mongo.so extension is not loaded.
At first, it thought it was the culprit, but it happens without mongo
being
loaded.
One thing, the CLI version seems to be more resilient, it needs more
data loaded
to crash, whereas with the apache module, it's always crashing.
Chromium reports `Error 324 (net::ERR_EMPTY_RESPONSE): Unknown error`
when
accessing a url.
I was able to get a backtrace (with no execute or zbacktrace output) and
around
frame 30-ish, it specifies entering the shutdown sequence, cleaning up a
closure
and then the crash.
Changing the summary to better reflect the problem.
Previous Comments:
------------------------------------------------------------------------
[2011-04-08 09:54:35] [email protected]
Does PHP only crash when the mongo extension is loaded? If so, please
report this at http://pecl.php.net/package/mongo, as bugs in PECL
extensions aren't dealt with in this bug tracker.
------------------------------------------------------------------------
[2011-04-08 06:28:38] msamson at chowly dot com
Finally got a backtrace:
/Zend/Zend_execute_API.c:437
437 Z_DELREF_PP(zval_ptr);
There is a mention in another frame about requesting php shutdown. Then
higher, it says it will cleanup a closure. Sadly, no execute and
zbacktrace output was empty.
------------------------------------------------------------------------
[2011-04-08 05:27:10] msamson at chowly dot com
Description:
------------
PHP crash either as a httpd module or as cli with `zend_mm_heap
corrupted`.
Please see https://bugzilla.redhat.com/show_bug.cgi?id=694630
This was initially thought as a fedora packaging bug, but even a
compiled from
source php is producing the same error.
Test script:
---------------
Please see https://bugzilla.redhat.com/show_bug.cgi?id=694630 for a
simple script.
Actual result:
--------------
Tested is using a 2 different virtual machines both running Fedora 14
x64. One
with php from yum, the other compiled.
gdb reports no backtrace and says there is `no stack`.
Apache 2.2 crashes, running php-cli too.
relevant strace output:
array(0) {
}
}
</div>
</div>
</body>
</html>) = 1681
write(2, "zend_mm_heap corrupted\n", 23zend_mm_heap corrupted
) = 23
exit_group(1) = ?
Another one with sessions:
pwrite(3, "cart|a:1:{s:2:\"id\";C:7:\"MongoId\""..., 63, 0) = 63
close(3) = 0
close(4) = 0
write(2, "zend_mm_heap corrupted\n", 23zend_mm_heap corrupted
) = 23
exit_group(1)
It appears php is crashing at the end of the request just before
delivering the
content, when a database of some sort is used.
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/bug.php?id=54491&edit=1
