Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756438Ab1FCVoS (ORCPT ); Fri, 3 Jun 2011 17:44:18 -0400 Received: from mail-fx0-f46.google.com ([209.85.161.46]:47279 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753622Ab1FCVoR convert rfc822-to-8bit (ORCPT ); Fri, 3 Jun 2011 17:44:17 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:from:content-type:message-id:date:to :content-transfer-encoding:mime-version:x-mailer; b=t14UlP8qr7Ay0fnwLGnA31OAS2AvRnYfK3gSmMEyFqS5wtRQZu/0eXKDhkbIgTXm+n 1I3d49WY0Oetd4Ud+BNZBRD6LFtTXshEzNmw3PeCq6TEDsL/M/8ejuJk0p0zxbKG743O WIXWbK3mEP8y4bwYaYb1Cfc1wTCt58+ylecdg= Subject: rcu_kthread hang on 3.0.0-rc1-next-20110602 From: =?iso-8859-1?Q?Markus_H=E4stbacka?= Content-Type: text/plain; charset=us-ascii Message-Id: <85F46CF9-5433-4623-91FC-9CD890082F69@gmail.com> Date: Sat, 4 Jun 2011 00:43:25 +0300 To: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8BIT Mime-Version: 1.0 (Apple Message framework v1084) X-Mailer: Apple Mail (2.1084) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1675 Lines: 30 Hello! After updating my debian squeeze box to 3.0.0-rc1-next-20110602 I'm experiencing a weird problem. If I run dmesg the computer hangs for 15 minutes, and I cannot even login at this time, if I leave top (the top window updates very slowly, like every 5 minutes during this period) running I can see that the process rcu_kthread takes 100% CPU, the computer load average is at around 10. I also sometimes get these disk errors in syslog: Jun 4 02:01:39 midi3g kernel: ata1.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 Jun 4 02:01:39 midi3g kernel: ata1.01: BMDMA stat 0x44 Jun 4 02:01:39 midi3g kernel: ata1.01: failed command: WRITE DMA Jun 4 02:01:39 midi3g kernel: ata1.01: cmd ca/00:00:1c:7b:c6/00:00:00:00:00/f0 tag 0 dma 131072 out Jun 4 02:01:39 midi3g kernel: res 51/84:00:fe:7b:c6/00:00:00:00:00/f0 Emask 0x10 (ATA bus error) Jun 4 02:01:39 midi3g kernel: ata1.01: status: { DRDY ERR } Jun 4 02:01:39 midi3g kernel: ata1.01: error: { ICRC ABRT } Jun 4 02:01:39 midi3g kernel: ata1: soft resetting link Jun 4 02:01:39 midi3g kernel: ata1.01: configured for UDMA/66 Jun 4 02:01:39 midi3g kernel: ata1: EH complete but for example the last time I got the hang, I didn't get this error, nor any other error for that matter. The OS is installed on a CF-card. The computer is a eBox computer with VIA Nehemiah CPU, 256MB RAM. what more information do you need? Or what more can I test? M -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/