From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755469AbaFPPwU (ORCPT ); Mon, 16 Jun 2014 11:52:20 -0400 Received: from mail-we0-f173.google.com ([74.125.82.173]:57922 "EHLO mail-we0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751448AbaFPPwT (ORCPT ); Mon, 16 Jun 2014 11:52:19 -0400 Date: Mon, 16 Jun 2014 17:52:15 +0200 From: Frederic Weisbecker To: Masami Hiramatsu Cc: Ingo Molnar , Borislav Petkov , Kees Cook , Jiri Kosina , Rusty Russell , x86@kernel.org, Steven Rostedt , linux-kernel@vger.kernel.org, Andrew Morton , Seiji Aguchi , Ingo Molnar Subject: Re: [PATCH -tip ] [Bugfix] x86/kprobes: Fix build errors and blacklist context_track_user Message-ID: <20140616155213.GG32264@localhost.localdomain> References: <539BE132.2080008@hitachi.com> <20140614064711.7865.45957.stgit@kbuild-fedora.novalocal> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140614064711.7865.45957.stgit@kbuild-fedora.novalocal> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jun 14, 2014 at 06:47:12AM +0000, Masami Hiramatsu wrote: > This reverts commit ecd50f714c421c759354632dd00f70c718c95b10 > since it causes build errors with CONFIG_CONTEXT_TRACKING and > that has been made from misunderstandings; context_track_user_*() > don't involve much in interrupt context, it just returns > if in_interrupt() is true. > > Instead of changing the do_debug/int3(), this just adds > context_track_user_*() to kprobes blacklist, since those are > still can be called right before kprobes handles int3 and debug > exceptions, and probing those will cause infinit loop. > > Signed-off-by: Masami Hiramatsu > Reported-by: Frederic Weisbecker Thanks a lot! Acked-by: Frederic Weisbecker