From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 2 Apr 2003 09:34:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 2 Apr 2003 09:34:17 -0500 Received: from mail.ocs.com.au ([203.34.97.2]:53000 "HELO mail.ocs.com.au") by vger.kernel.org with SMTP id ; Wed, 2 Apr 2003 09:34:16 -0500 X-Mailer: exmh version 2.4 06/23/2000 with nmh-1.0.4 From: Keith Owens To: linas@austin.ibm.com, Linux Kernel Mailing List Subject: Re: ptrace patch fails stress testing In-reply-to: Your message of "02 Apr 2003 12:49:48 +0100." <1049284187.16276.32.camel@dhcp22.swansea.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 03 Apr 2003 00:45:31 +1000 Message-ID: <28174.1049294731@ocs3.intra.ocs.com.au> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2003-04-01 at 19:22, linas@austin.ibm.com wrote: > The problem appears to be that task->mm is dereferenced without > looking to see if mm is NULL. e.g. in the sched.h in the > is_dumpable() macro, we have task->mm->dumpable . I'm sitting > in front of a KDB session and I'm clearly looking at task->mm > which is NULL. Sorry, KDB is an illegal kernel patch. Linus has spoken, the kernel does not need debuggers. All right, assume a smiley there.