From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754026Ab1KOIui (ORCPT ); Tue, 15 Nov 2011 03:50:38 -0500 Received: from trent.utfs.org ([194.246.123.103]:52892 "EHLO trent.utfs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753624Ab1KOIuh (ORCPT ); Tue, 15 Nov 2011 03:50:37 -0500 X-Greylist: delayed 375 seconds by postgrey-1.27 at vger.kernel.org; Tue, 15 Nov 2011 03:50:37 EST Date: Tue, 15 Nov 2011 00:44:19 -0800 (PST) From: Christian Kujau To: LKML cc: linuxppc-dev@lists.ozlabs.org Subject: 3.2.0-rc1 panic on PowerPC Message-ID: User-Agent: Alpine 2.01 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-AV-Checked: ClamAV using ClamSMTP (127.0.0.1) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I noticed a few crashes on this PowerBook G4 lately, starting somewhere in 3.2.0-rc1. The crashes are really rare and as I'm not on the system all the time I did not notice most of them. By the time I did, the screen was blank already and I had to hard-reset the box. But not this time: http://nerdbynature.de/bits/3.2.0-rc1/oops/ When the crash occured, the system was failry loaded (CPU and disk I/O wise), so that may have triggered it. I tried to type off the stack trace, I hope there are not too many typos, see below. The machine is fairly old, so maybe it's "just" bad RAM or something, I wouldn't be suprised. But maybe not, the box us pretty stable most of the time and only now I notice these rare crashes. If anyone could take a quick look...? Thank you, Christian. Instruction dump: 92c40008 68000001 0f000000 80040000 5400003c 90040000 817f000c 380bffff 901f000c 2f090000 81640018 81440014 <916a0004> 914b0000 92840014 92a49918 Kernel panic - not syncing: Fatal exception in interrupt Call Trace: show_stack+0x70/0x1bc (unreliable) panic+0xc8/0x220 die+0x2ac/0x2b8 bad_page_fault+0xbc/0x104 handle_page_fault+0x7c/0x80 Exception: 300 at T.975+0x3f4/0x570 LR = T.957+0x300/0x570 kmem_cache_alloc+0x150/0x150 __aloc_skb+0x50/0x148 tcp_send_ack+0x35/0x138 tcp_delay_timer+0x140/0x244 run_timer_softirq+0x1a0/0x2ec __do_softirq+0xf4/0x1bc call_do_softirq+0x14/0x24 do_softirq+0xfc/0x128 irq_exit+0xa0/0xa4 timer_interrupt+0x148/0x180 ret_from_except+0x0/0x14 cpu_idle+0xa0/0x118 rest_init+0xf0/0x114 start_kernel+0x2d0/0x2f0 0x3444 Rebooting in 180 seconds.. -- BOFH excuse #184: loop found in loop in redundant loopback