From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753916AbZLWCJv (ORCPT ); Tue, 22 Dec 2009 21:09:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752905AbZLWCJu (ORCPT ); Tue, 22 Dec 2009 21:09:50 -0500 Received: from qw-out-2122.google.com ([74.125.92.26]:47361 "EHLO qw-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751804AbZLWCJt convert rfc822-to-8bit (ORCPT ); Tue, 22 Dec 2009 21:09:49 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=vunWmc+QZ1c/dTzbPzWoKn9YY5FP0vk8SGloYFewMLQpCKZfN8R2nufdSjl8xQrmGh s2Q5K6Sko19FEOvguuTr7uhyhMNg/LEEnNhIvAz5lyCMigfTtJWv3U3gH3+vRhEvelaR CgDTTRqSXB+CyVjOh0DJe0qOxZRD0Ol9Y/1Cc= MIME-Version: 1.0 In-Reply-To: <200912230120.15519.johannes.hirte@fem.tu-ilmenau.de> References: <200912230120.15519.johannes.hirte@fem.tu-ilmenau.de> Date: Wed, 23 Dec 2009 10:09:47 +0800 Message-ID: <2375c9f90912221809h30c509c3kda5bfd45276fffe5@mail.gmail.com> Subject: Re: [Oops] 2.6.33-rc1: kernel NULL pointer dereference in check_preempt_wakeup From: =?UTF-8?Q?Am=C3=A9rico_Wang?= To: Johannes Hirte Cc: "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 23, 2009 at 8:20 AM, Johannes Hirte wrote: > With 2.6.33-rc1 I have random hangs. Even SysRq-Key works, only hard reset. > I've had it mostly within X, where I didn't get any messages but one time on > console with the following trace: > > BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 > IP [1 check_preempt_wakeup+0xae/0x14e > PGD 10efa1067 PUD 11767a067 PMD 0 > Oops: 0000 [#1] SMP > last sysfs file: /sys/devices/pci0000:00/0000:00:10.3/tempt1_input > CPU 0 > Pid: 20108, comm: ebuild.sh Not tainted 2.6.33-rc1 #1 TYAN Tiger K8W Dual AMD > Opteron, S28755/To Be Filled By O.E.M. > RIP: 0010:[] [] check_preempt_wakeup+0xae/0x14e > RSP: 0018: ffff88006c0e3e50 EFALGS: 000010087 > RAX: ffff880028292420 RBX: 0000000000000000 RCX: 0000000000000000 > RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000001200011 > RBP: ffff880105a3eae0 R08: 0000000000000000 R09: 0000000000000001 > R10: 0000000001200011 R11: ffff88011cdd0000 R12: ffff8800282123c0 > R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000004ed0 > FS:  00007f767a6aa700(0000) GS:ffff880028200000(0000) knlGS:0000000000000000 > CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 0000000000000090 CR§: 00000001061a3000 CR4: 00000000000006f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process ebuild.sh (pid: 20108, threadinfo ffff88006c0e2000, task ffff880105a3eae0) > Stack: >  ffff8800202123c0 ffff88009734c740 0000000001200011 ffff88009734c740 > <0> 0000000000004ed0 ffffffff8102e329 0000000000000000 0000000000000286 > <0> 00007f767a6aa9d0 0000000000000000 0000000000000000 ffffffff8103042d > Call Trace: >  [] ?  wake_up_new_task+0x66/0x8f >  [] ? do_fork+0x20f/0x273 >  [] ? alloc_fd+0x69/10a >  [] ? sigprocmask+0x9f/0xc2 >  [] ? stub_clone+0x13/0x20 >  [] ? system_call_fastpath+0x16/0x1b > Code: 8b 89 88 00 00 00 ff c0 48 85 c9 75 f2 eb 09 40 0b 9b 88 00 00 00 ff ca 39 > c2 7f f3 eb 09 4d 8b b6 88 00 00 00 ff c8 39 d0 7f f3 <49> 8b 86 90 00 00 00 48 > 39 83 90 00 00 00 75 74 4d 85 f6 75 04 > RIP  [] check_preempt_wakeup+0xae/0x14e >  RSP > CR2: 0000000000000090 > ---[ end trace f6bafb05b72ae358 ]--- Hmm, seems like the one Eric reported: http://lkml.org/lkml/2009/12/21/272 > > Since the system didn't respond anymore, I had captured this with camera and > copied by hand. I hope I haven't made any mistakes when copying. The picture > wasn't very good. > Wow, hard work. :) Can you try Peter's patch? http://lkml.org/lkml/2009/12/22/124 Thanks!