Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760667AbXJaXIz (ORCPT ); Wed, 31 Oct 2007 19:08:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751948AbXJaXIr (ORCPT ); Wed, 31 Oct 2007 19:08:47 -0400 Received: from smtp2.linux-foundation.org ([207.189.120.14]:35430 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751450AbXJaXIq (ORCPT ); Wed, 31 Oct 2007 19:08:46 -0400 Date: Wed, 31 Oct 2007 16:08:21 -0700 (PDT) From: Linus Torvalds To: Nick Piggin cc: Duane Griffin , linux-kernel Mailing List , stable@kernel.org Subject: Re: 2.6.23 regression: accessing invalid mmap'ed memory from gdb causes unkillable spinning In-Reply-To: <20071031225541.GA28552@wotan.suse.de> Message-ID: References: <20071031041932.GA12189@wotan.suse.de> <20071031151934.GA19211@wotan.suse.de> <20071031225541.GA28552@wotan.suse.de> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 844 Lines: 23 On Wed, 31 Oct 2007, Nick Piggin wrote: > > No that would be great. Fingers crossed it won't cause any problems. I actually doubt it will cause problems. We made much bigger changes to ptrace support when we disallowed writing to read-only shared memory areas (we used to do the magic per-page COW thing). But if people have test-cases for ptrace and/or other magical users of access_vm_pages() (things like core-dumping comes to mind - although I think we don't dump pure file mappings at all, do we?) it would certainly be good to run any such tests on the current -git tree... Linus - 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/