From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966255AbXDGSiv (ORCPT ); Sat, 7 Apr 2007 14:38:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S966263AbXDGSiu (ORCPT ); Sat, 7 Apr 2007 14:38:50 -0400 Received: from smtp.osdl.org ([65.172.181.24]:59039 "EHLO smtp.osdl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966255AbXDGSit (ORCPT ); Sat, 7 Apr 2007 14:38:49 -0400 Date: Sat, 7 Apr 2007 11:38:29 -0700 From: Andrew Morton To: Michal Piotrowski Cc: LKML , Roland McGrath Subject: Re: mm snapshot broken-out-2007-04-07-03-27.tar.gz uploaded Message-Id: <20070407113829.c10e9fd1.akpm@linux-foundation.org> In-Reply-To: <4617DE67.4090801@googlemail.com> References: <200704071029.l37ATdKR032505@shell0.pdx.osdl.net> <46178ECC.2030107@googlemail.com> <20070407105328.836902d1.akpm@linux-foundation.org> <4617DE67.4090801@googlemail.com> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 07 Apr 2007 20:09:43 +0200 Michal Piotrowski wrote: > BTW. I guess that this need a similar fix. > > kernel BUG at kernel/ptrace.c:494! > invalid opcode: 0000 [#2] > PREEMPT SMP > last sysfs file: devices/platform/w83627hf.656/temp2_input > Modules linked in: ipt_MASQUERADE iptable_nat nf_nat nfsd exportfs lockd nfs_acl autofs4 sunrpc af_packet nf_conntrack_netbios_ns ipt_REJECT nf_conntrack_ipv4 xt_state nf_conntrack nfnetlink iptable_filter ip_tables ip6t_REJECT xt_tcpudp ip6table_filter ip6_tables x_tables ipv6 binfmt_misc thermal processor fan container nvram snd_intel8x0 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss intel_agp snd_pcm agpgart evdev snd_timer snd soundcore i2c_i801 snd_page_alloc ide_cd cdrom rtc unix > CPU: 1 > EIP: 0060:[] Not tainted VLI > EFLAGS: 00010202 (2.6.21-rc6-mm1 #1) > EIP is at ptrace_exit+0x29/0x21d > no, I don't see what would cause that. Was there no call trace? It's always possible that some random part of the kernel has gone and leaked a preempt_count. BUG_ON is an obnoxious thing - please prefer to use WARN_ON in non-fatal situations. Particularly when the assertions aren't tested ;)