Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760261AbZDWH4w (ORCPT ); Thu, 23 Apr 2009 03:56:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757375AbZDWHeV (ORCPT ); Thu, 23 Apr 2009 03:34:21 -0400 Received: from sous-sol.org ([216.99.217.87]:51050 "EHLO x200.localdomain" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1757097AbZDWHeT (ORCPT ); Thu, 23 Apr 2009 03:34:19 -0400 Message-Id: <20090423072910.826861440@sous-sol.org> User-Agent: quilt/0.47-1 Date: Thu, 23 Apr 2009 00:21:37 -0700 From: Chris Wright To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: Justin Forbes , Zwane Mwaikambo , "Theodore Ts'o" , Randy Dunlap , Dave Jones , Chuck Wolber , Chris Wedgwood , Michael Krufky , Chuck Ebbert , Domenico Andreoli , Willy Tarreau , Rodrigo Rubira Branco , Jake Edge , Eugene Teo , torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Ingo Molnar Subject: [patch 077/100] x86: disable X86_PTRACE_BTS for now References: <20090423072020.428683652@sous-sol.org> Content-Disposition: inline; filename=x86-disable-x86_ptrace_bts-for-now.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1216 Lines: 37 -stable review patch. If anyone has any objections, please let us know. --------------------- From: Ingo Molnar upstream commit: d45b41ae8da0f54aec0eebcc6f893ba5f22a1e8e Oleg Nesterov found a couple of races in the ptrace-bts code and fixes are queued up for it but they did not get ready in time for the merge window. We'll merge them in v2.6.31 - until then mark the feature as CONFIG_BROKEN. There's no user-space yet making use of this so it's not a big issue. Cc: Signed-off-by: Ingo Molnar [chrisw: trivial 2.6.29 backport] Signed-off-by: Chris Wright --- arch/x86/Kconfig.cpu | 1 + 1 file changed, 1 insertion(+) --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -523,6 +523,7 @@ config X86_PTRACE_BTS bool "Branch Trace Store" default y depends on X86_DEBUGCTLMSR + depends on BROKEN help This adds a ptrace interface to the hardware's branch trace store. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/