Date: Fri, 8 Apr 2016 08:36:04 +0200
From: Natanael Copa <ncopa@alpinelinux.org>
To: Nathan Johnson <nathan@nathanjohnson.org>
Cc: alpine-aports@lists.alpinelinux.org
Subject: Re: [alpine-aports] phantonjs question
Message-ID: <20160408083604.1e65c454@ncopa-desktop.alpinelinux.org>
In-Reply-To: <7BCBCAF4-ED74-4EE4-9CB4-D5C79F7A52C3@nathanjohnson.org>
References: <7BCBCAF4-ED74-4EE4-9CB4-D5C79F7A52C3@nathanjohnson.org>
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On Thu, 7 Apr 2016 21:50:43 -0500
Nathan Johnson <nathan@nathanjohnson.org> wrote:

> I*m playing with a phantomjs port, and it looks like Natanael Copa
> already made two PRs to some deps to make it compile (Thanks Natanael!).
>=20
> https://github.com/Vitallium/qtbase/pull/4
>=20
> https://github.com/Vitallium/qtwebkit/pull/9
>=20
>  I can*t help but think he*s already started down this path.
>=20
> The bad news is, the test harness seems to bomb.  If I run this under
> the grsec kernel, it signal 11*s all over the place.  If I run under
> vanilla, no segfaults, but it does time out when phantomjs tries to
> connect to the python httpd process.  For what it*s worth, I also get
> similar timeouts when doing a wget to localhost on the same port, so
> I am inclined to believe it might be an issue with the python script.


phantomjs uses JIT which does not work with the memory protections in
grsec kernel. You have to disable those for the phantomjs binary:

  paxctl -cm bin/phantomjs
=20
> If I don*t hear anything back, I*ll continue into the rabbit hole.
> Just wanted to make sure I wasn't duplicating effort.

I published the Dockerfile I used to build phantomjs:

https://github.com/ncopa/docker-phantomjs-alpine/blob/master/Dockerfile

-nc


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