From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751815AbZH1Elt (ORCPT ); Fri, 28 Aug 2009 00:41:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751759AbZH1Els (ORCPT ); Fri, 28 Aug 2009 00:41:48 -0400 Received: from e7.ny.us.ibm.com ([32.97.182.137]:36773 "EHLO e7.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751716AbZH1Els (ORCPT ); Fri, 28 Aug 2009 00:41:48 -0400 Date: Fri, 28 Aug 2009 10:11:35 +0530 From: Ananth N Mavinakayanahalli To: Masami Hiramatsu Cc: Frederic Weisbecker , Ingo Molnar , lkml , systemtap , DLE Subject: Re: [PATCH -tip tracing/kprobes 6/6] kprobes: Prohibit to probe native_get_debugreg Message-ID: <20090828044135.GG7220@in.ibm.com> Reply-To: ananth@in.ibm.com References: <20090827152539.GE6058@nowhere> <20090827172332.8246.34194.stgit@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090827172332.8246.34194.stgit@localhost.localdomain> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 27, 2009 at 01:23:32PM -0400, Masami Hiramatsu wrote: > Since do_debug() calls get_debugreg(), native_get_debugreg() will be called > from singlestepping. This can cause an int3 infinit loop. > > Signed-off-by: Masami Hiramatsu > Cc: Frederic Weisbecker > Cc: Ananth N Mavinakayanahalli > Cc: Ingo Molnar > --- Acked-by: Ananth N Mavinakayanahalli