Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756210AbZCCUEQ (ORCPT ); Tue, 3 Mar 2009 15:04:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752739AbZCCUD7 (ORCPT ); Tue, 3 Mar 2009 15:03:59 -0500 Received: from silver.sucs.swan.ac.uk ([137.44.10.1]:41032 "EHLO silver.sucs.swan.ac.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751724AbZCCUD6 (ORCPT ); Tue, 3 Mar 2009 15:03:58 -0500 Date: Tue, 3 Mar 2009 20:03:52 +0000 From: Sitsofe Wheeler To: Bob Copeland Cc: Jiri Slaby , Nick Kossifidis , Frederic Weisbecker , linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, ath5k-devel@venema.h4ckr.net, "Luis R. Rodriguez" Subject: Re: [TIP] BUG kmalloc-4096: Poison overwritten (ath5k_rx_skb_alloc) Message-ID: <20090303200352.GA8343@silver.sucs.org> References: <20090223152724.M82409@bobcopeland.com> <49A321BA.2040500@gmail.com> <49A326A4.8090103@gmail.com> <40f31dec0902231508l512af5b7w68cfcc0bdf3cfa87@mail.gmail.com> <20090224135817.GB6019@hash.localnet> <49A46AD4.3060007@gmail.com> <20090225140139.GA18694@silver.sucs.org> <20090226135938.GA12182@hash.localnet> <20090226170338.GA1745@silver.sucs.org> <20090303041222.GA1238@hash.localnet> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090303041222.GA1238@hash.localnet> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 971 Lines: 22 On Mon, Mar 02, 2009 at 11:12:22PM -0500, Bob Copeland wrote: > On Thu, Feb 26, 2009 at 05:03:39PM +0000, Sitsofe Wheeler wrote: > > > > Note that I was able to reproduce it again : ) > > By the way, here's the theoretical race I was alluding to. ath5k_reset > happens pretty frequently when scanning, and it's possible that the rx > tasklet is run on another cpu after interrupts are turned off, but The machine where this fault happened is a single core non-symmetric multithreading EeePC 900 with a Celeron M 900 using a voluntary preempt kernel (so I doubt this is due to tasklets being run on another CPU)... I am a bit unsure which patches you want me to be testing though... -- Sitsofe | http://sucs.org/~sits/ -- 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/