linux-kernel - DO NOT APPLY: x86-64, espfix: Don't leak bits 31:16 of %esp returning to 16-bit stack

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Date:	Tue, 15 Jul 2014 16:21:46 -0700
From:	Andrew Lutomirski <amluto@...il.com>
To:	Kamal Mostafa <kamal@...onical.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	stable <stable@...r.kernel.org>, kernel-team@...ts.ubuntu.com,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Borislav Petkov <bp@...en8.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Dirk Hohndel <dirk@...ndel.org>,
	Arjan van de Ven <arjan.van.de.ven@...el.com>,
	comex <comexk@...il.com>,
	Alexander van Heukelum <heukelum@...tmail.fm>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>
Subject: DO NOT APPLY: x86-64, espfix: Don't leak bits 31:16 of %esp returning
 to 16-bit stack

On Tue, Jul 15, 2014 at 2:28 PM, Kamal Mostafa <kamal@...onical.com> wrote:
> 3.13.11.5 -stable review patch.  If anyone has any objections, please let me know.
>
> ------------------
>
> From: "H. Peter Anvin" <hpa@...ux.intel.com>
>
> commit 3891a04aafd668686239349ea58f3314ea2af86b upstream.

Do not apply to any -stable release yet.  This causes nasty regressions on Xen.

--Andy
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