linux-kernel - Re: [PATCH 1/2] x86/stacktrace: do not fail when regs on stack for ORC

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Date:   Thu, 10 May 2018 07:49:16 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Jiri Slaby <jslaby@...e.cz>
Cc:     mingo@...hat.com, linux-kernel@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Subject: Re: [PATCH 1/2] x86/stacktrace: do not fail when regs on stack for
 ORC

On Thu, May 10, 2018 at 02:33:03PM +0200, Jiri Slaby wrote:
> On 04/19/2018, 03:42 PM, Josh Poimboeuf wrote:
> > On Mon, Apr 16, 2018 at 05:16:53PM -0500, Josh Poimboeuf wrote:
> >> On Wed, Dec 20, 2017 at 08:07:17PM +0100, Jiri Slaby wrote:
> >>> On 12/20/2017, 06:45 PM, Josh Poimboeuf wrote:
> >>>> It might not be until 2018 though.  But in the meantime you can go ahead
> >>>> and update your patches accordingly and then we can combine them for
> >>>> testing next year.
> >>>
> >>> I already did ;). So when you have that ready, I will send it on top
> >>> right after.
> >>
> >> Sorry for the delay...  Here's a (lightly tested) patch.  Can you test
> >> it with the latest version of your patches?
> > 
> > This one actually compiles:
> > 
> > From: Josh Poimboeuf <jpoimboe@...hat.com>
> > Subject: [PATCH] x86/unwind/orc: Detect the end of the stack
> 
> With this patch applied, livepatching never completes. Kthreads are in
> the unpatched state forever. I have no details yet.

Hm, I thought I had tested that, but now I'm not sure.  Let me try it
again.

-- 
Josh