Bug #73114 [Asn->Csd]: php segfault probably because OpenBSD wx implementation

From: Date: Sun, 13 Nov 2016 14:38:34 +0000
Subject: Bug #73114 [Asn->Csd]: php segfault probably because OpenBSD wx implementation
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-205334@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=73114&edit=1

 ID:                 73114
 Updated by:         cmb@php.net
 Reported by:        martin dot larsson2 at gmail dot com
 Summary:            php segfault probably because OpenBSD wx
                     implementation
-Status:             Assigned
+Status:             Closed
 Type:               Bug
 Package:            PCRE related
 Operating System:   OpenBSD
 PHP Version:        7.0.11
 Assigned To:        cmb
 Block user comment: N
 Private report:     N

 New Comment:

We have decided that this is not an issue that PHP should try to
solve, but rather to document the problem and possible solutions.


Previous Comments:
------------------------------------------------------------------------
[2016-11-13 14:35:48] cmb@php.net

Automatic comment from SVN on behalf of cmb
Revision: http://svn.php.net/viewvc/?view=revision&revision=340988
Log: Document W^X/PaX MPROTECT issues

Fix #72281: PaX MPROTECT breaks php
Fix #73114: php segfault probably because OpenBSD wx implementation

------------------------------------------------------------------------
[2016-11-11 18:46:46] cmb@php.net

> anyways if you want login to my openbsd vm feel free to mail

Thanks for the offer, but that wouldn't help, unfortunately. I've just
found a closely related bug report on the PCRE bug tracker[1] which
makes it clear that the issue would have to be resolved there. However,
that appears to be non-trivial, if possible at all. :-(

I've just emailed the internals mailing list[2] – maybe somebody else
has a solution.

[1] <https://bugs.exim.org/show_bug.cgi?id=1749>
[2] <http://news.php.net/php.internals/96837>

------------------------------------------------------------------------
[2016-11-11 18:20:15] martin dot larsson2 at gmail dot com

yes it works without that, but that we knew from the beginning right?:)

anyways if you want login to my openbsd vm feel free to mail

------------------------------------------------------------------------
[2016-11-11 18:11:49] cmb@php.net

Thanks! I've found an article[1] which includes the commit message
regarding the W^X violation protection. It seems to me that for now you
have to use the "wxallowed" mount option. Alternatively, building PHP
without PCRE JIT support (--without-pcre-jit) should also work (assuming
that this is indeed the only part that uses W|X mmap).

[1] <http://undeadly.org/cgi?action=article&sid=20160527203200>

------------------------------------------------------------------------
[2016-11-11 17:39:22] martin dot larsson2 at gmail dot com

same error with CFLAGS="-fpie -pie" ./configure

here is paste http://pastebin.ca/3738078

------------------------------------------------------------------------


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