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

From: Date: Fri, 11 Nov 2016 18:46:49 +0000
Subject: Bug #73114 [Asn]: php segfault probably because OpenBSD wx implementation
References: 1  Groups: php.bugs 
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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
 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:

> 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>


Previous Comments:
------------------------------------------------------------------------
[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

------------------------------------------------------------------------
[2016-11-11 16:40:00] cmb@php.net

Ah, I see, thanks! Please try to build with:

  CFLAGS="-fpie -pie" ./configure …

Cf. <https://www.openbsd.org/papers/asiabsdcon2015-pie-slides.pdf>.

------------------------------------------------------------------------
[2016-11-11 14:05:11] martin dot larsson2 at gmail dot com

php doesnt compile for me at all, I use the package.

I get wx violation just trying to compile it, and that netbsd patch use some paxctl which openbsd
doesnt have.

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


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