From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750825AbWFXPWf (ORCPT ); Sat, 24 Jun 2006 11:22:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750838AbWFXPWf (ORCPT ); Sat, 24 Jun 2006 11:22:35 -0400 Received: from saraswathi.solana.com ([198.99.130.12]:48028 "EHLO saraswathi.solana.com") by vger.kernel.org with ESMTP id S1750825AbWFXPWe (ORCPT ); Sat, 24 Jun 2006 11:22:34 -0400 Date: Sat, 24 Jun 2006 11:22:35 -0400 From: Jeff Dike To: Theodore Tso , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: 2.6.17-mm1: UML failing w/o SKAS enabled Message-ID: <20060624152235.GB3627@ccure.user-mode-linux.org> References: <20060621034857.35cfe36f.akpm@osdl.org> <20060622213443.GA22303@thunk.org> <20060623024222.GA8316@ccure.user-mode-linux.org> <20060623210714.GA16661@thunk.org> <20060623214623.GA7319@ccure.user-mode-linux.org> <20060624140001.GA7752@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060624140001.GA7752@thunk.org> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jun 24, 2006 at 10:00:01AM -0400, Theodore Tso wrote: > 32% ./linux > Checking that ptrace can change system call numbers...OK > Checking syscall emulation patch for ptrace...OK > Checking advanced syscall emulation patch for ptrace...OK > Checking for tmpfs mount on /dev/shm...OK > Checking PROT_EXEC mmap in /dev/shm/...OK > Checking for the skas3 patch in the host: > - /proc/mm...not found > - PTRACE_FAULTINFO...not found > - PTRACE_LDT...not found > UML running in SKAS0 mode > Checking that ptrace can change system call numbers...OK > Checking syscall emulation patch for ptrace...OK > Checking advanced syscall emulation patch for ptrace...OK > > {/usr/projects/uml/linux-2.6.17-mm1} > 33% > > Looks like UML just crashed (tm), without any explanation. Kconfig > attached. Suggestions on how to debug this would be appreciated. I'm working on this - the genirq stuff in -mm broke UML. Add stderr=1 to the command line to see the actual crash. 2.6.17 is fine, except you need a klibc patch for O= builds. Jeff