From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752400AbZFVO0z (ORCPT ); Mon, 22 Jun 2009 10:26:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751607AbZFVO0r (ORCPT ); Mon, 22 Jun 2009 10:26:47 -0400 Received: from cam-admin0.cambridge.arm.com ([193.131.176.58]:47792 "EHLO cam-admin0.cambridge.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750964AbZFVO0r (ORCPT ); Mon, 22 Jun 2009 10:26:47 -0400 Subject: Re: Rootfs in eMMC: Kernel panic ...Attempted to kill init! From: Catalin Marinas To: Sudeep K N Cc: Russell King - ARM Linux , linux-arm-kernel@lists.arm.linux.org.uk, drzeus-mmc@drzeus.cx, linux-kernel@vger.kernel.org In-Reply-To: <366f00c80906220713o7ad61a8elb6b278b7313107d8@mail.gmail.com> References: <366f00c80906180218p539f9df9md30f629787fabeb2@mail.gmail.com> <20090619134446.GI24573@n2100.arm.linux.org.uk> <366f00c80906220713o7ad61a8elb6b278b7313107d8@mail.gmail.com> Content-Type: text/plain Organization: ARM Ltd Date: Mon, 22 Jun 2009 15:26:29 +0100 Message-Id: <1245680789.15580.85.camel@pc1117.cambridge.arm.com> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 22 Jun 2009 14:26:30.0416 (UTC) FILETIME=[6F682900:01C9F345] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2009-06-22 at 19:43 +0530, Sudeep K N wrote: > Thanks for the suggestion. > With the logs it is clear that crash is in the userspace. > I am getting one of the 2 logs(below) randomly. This sounds familiar: SMP -> writealloc cache policy (could be forced by hardware) -> cache corruption in user space with ext2. Does you driver use the DMA API? If not, does your eMMC driver flush the cache (in case you hit one of the long-standing problems with PIO drivers). It's worth trying this hack: http://article.gmane.org/gmane.linux.ports.arm.kernel/51556 -- Catalin