Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933911Ab1CXTh6 (ORCPT ); Thu, 24 Mar 2011 15:37:58 -0400 Received: from mail-gx0-f174.google.com ([209.85.161.174]:38904 "EHLO mail-gx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751717Ab1CXThy convert rfc822-to-8bit (ORCPT ); Thu, 24 Mar 2011 15:37:54 -0400 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=ZHy3/Bow79gKxQP/eztFqB3NmehG1DcBbK+ozpWjdCNaNVPCpotRWZYNwMO5fjsOjT 1oiOwB0TF+TiJCAFm4Pp92gJ2eUTtLvJyAlRc+sPLm3ksGS2IT1XkTiWMSDAlDGXzjSP 75BBRd0mc1kX+hmF/WLbM4v8cp4wBthMHtpdM= MIME-Version: 1.0 In-Reply-To: References: <201103232322.52485.rjw@sisk.pl> <201103240000.26788.rjw@sisk.pl> Date: Thu, 24 Mar 2011 20:37:53 +0100 Message-ID: Subject: Re: Corrupted files after suspend to disk From: richard -rw- weinberger To: "Rafael J. Wysocki" Cc: LKML , linux-pm@lists.linux-foundation.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4303 Lines: 111 On Thu, Mar 24, 2011 at 11:16 AM, richard -rw- weinberger wrote: > On Thu, Mar 24, 2011 at 12:00 AM, Rafael J. Wysocki wrote: >> On Wednesday, March 23, 2011, richard -rw- weinberger wrote: >>> On Wed, Mar 23, 2011 at 11:22 PM, Rafael J. Wysocki wrote: >>> > On Wednesday, March 23, 2011, richard -rw- weinberger wrote: >>> >> On Wed, Mar 23, 2011 at 11:11 PM, Rafael J. Wysocki wrote: >>> >> > On Wednesday, March 23, 2011, richard -rw- weinberger wrote: >>> >> >> 2011/3/23 Rafael J. Wysocki : >>> >> >> > On Wednesday, March 23, 2011, richard -rw- weinberger wrote: >>> >> >> >> Hi, >>> >> >> >> >>> >> >> >> I'm facing a very strange problem on my netbook (Lenovo Ideapad S10) >>> >> >> >> running Linux 2.6.37.4. >>> >> >> >> After resuming from s2disk some files are corrupted. >>> >> >> >> But when I reboot my netbook everything seems good again. >>> >> >> >> >>> >> >> >> When I saw the problem the first time the ls command segfaulted always. >>> >> >> >> I did a reboot and it worked again. >>> >> >> >> >>> >> >> >> A few days later zypper crashed. After a reboot it worked again. >>> >> >> >> And today ssh crashed. I looked a bit closer and saw it crashed >>> >> >> >> somewhere within libcrypto. >>> >> >> >> So I made copy libcrypto and rebooted. >>> >> >> >> After the reboot ssh worked again but libcrypto and the copy of it hat >>> >> >> >> a different sha1 sum! >>> >> >> >> WTF?! >>> >> >> >> >>> >> >> >> Is this a known issue? >>> >> >> > >>> >> >> > No. >>> >> >> > >>> >> >> >> dmesgs and config are attached. >>> >> >> >> >>> >> >> >> The used distribution is openSUSE 11.4 with suspend-0.80.20100129-7.1 >>> >> >> >> (default from suse). >>> >> >> >> I'm using ext3 as root filesystem. >>> >> >> >> What else do you need? >>> >> >> > >>> >> >> > Whatever you can do to narrow down the problem. ?At the moment I only know >>> >> >> > that it's there. >>> >> >> >>> >> >> I can reproduce the problem now. >>> >> >> After ~20 suspend and resume iterations aide finds corrupted files in /lib/. >>> >> >> It's always a very basic lib like libcrypto, libglib which is used all >>> >> >> the time on my system. >>> >> > >>> >> > Those files are never intentionally modified, right? >>> >> > >>> >> >> Maybe it's an issue like this one? >>> >> >> https://lkml.org/lkml/2010/12/2/339 >>> >> > >>> >> > It might have if that patch hadn't been merged before 2.6.37. >>> >> > >>> >> > Is the system 32-bit or 64-bit? >>> >> >>> >> It's a 32-bit system. >>> >> cmp shows that the corrupted files differ in many bytes (not scattered). >>> >> The corrupted bytes are always 0 or 252. >>> > >>> > Do I understand correctly that the files apparently corrupted after resume >>> > are not corrupted any more when you reboot? >>> >>> Yes. >>> Seems like a cache issue. >> >> There's a couple things you can check before we start asking other people for >> help. >> >> First, it would be good to know if things change when you save the image >> into a swap file instead of the swap partition you've been using so far >> (I believe it's documented quite well how to do that). >> >> Second, please verify if using the built-in save/load hibernate code leads >> to the same issue (you can hibernate by doing "echo disk > /sys/power/state" >> to verify that). >> >> Of course, please test the above separately. :-) > > Ok, I'll test this when I'm at home. > > BTW: dropping the caches helps, when some files seem corrupted. > Today /usr/bin/okular was broken. > After setting vm.drop_caches=1 it worked again. > >> Thanks, >> Rafael >> -- >> 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/ >> > > -- > Thanks, > //richard > On Linux 2.6.38 I'm unable to reproduce the issue. Only 2.6.37 seems to be affected. So, I'm moving over to 2.6.38. :) -- Thanks, //richard -- 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/