linux-kernel - Re: [PATCH v4 0/3] Compile-time stack frame pointer validation

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Message-ID: <20150520172700.GM3644@twins.programming.kicks-ass.net>
Date:	Wed, 20 May 2015 19:27:00 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, Michal Marek <mmarek@...e.cz>,
	X86 ML <x86@...nel.org>, live-patching@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andy Lutomirski <luto@...nel.org>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Brian Gerst <brgerst@...il.com>,
	Borislav Petkov <bp@...en8.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v4 0/3] Compile-time stack frame pointer validation

On Wed, May 20, 2015 at 09:03:37AM -0700, Andy Lutomirski wrote:
> I think it would be nice to have full DWARF unwind support for
> everything at some point.  Unfortunately, I don't see any easy path to
> getting there.  It doesn't help that AFAIK no one has ever proposed a
> usable in-kernel DWARF unwinder.

There's a bit of history here; SuSE (iirc) actually has one, however:

  https://lkml.org/lkml/2012/2/10/356
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