linux-kernel - Re: [PATCH 0/2] Kernel Live Patching

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 7 Nov 2014 07:11:53 -0600
From:	Josh Poimboeuf <jpoimboe@...hat.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Vojtech Pavlik <vojtech@...e.cz>,
	Seth Jennings <sjenning@...hat.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Steven Rostedt <rostedt@...dmis.org>,
	live-patching@...r.kernel.org, kpatch@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] Kernel Live Patching

On Thu, Nov 06, 2014 at 11:47:45PM -0800, Christoph Hellwig wrote:
> On Thu, Nov 06, 2014 at 09:24:23PM +0100, Vojtech Pavlik wrote:
> > One reason is that there are currently at least two generators using
> > very different methods of generation (in addition to the option of doing
> > the patch module by hand), and neither of them are currently in a state
> > where they would be ready for inclusion into the kernel (although the
> > kpatch one is clearly closer to that).
> 
> So agree on one method and get it into shape, just like we do for other
> kernel subsystems.

That's our goal (and it sounds like everybody's on board with that).

But we have two different implementations, all the way up the stack.  I
think we have to work on combining and stabilizing one thing at a time.
We want to do this in stages:

1. Define a common core module with an API that can be used by all three
   approaches (manual, kpatch generator, kGraft generator)

2. Add consistency model(s) (e.g. kpatch stop_machine, kGraft per-task
   consistency, Masami's per task ref counting)

3. Add combined patch module generation tool

-- 
Josh
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/