Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757924AbZC2OYs (ORCPT ); Sun, 29 Mar 2009 10:24:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756018AbZC2OYi (ORCPT ); Sun, 29 Mar 2009 10:24:38 -0400 Received: from silver.sucs.swan.ac.uk ([137.44.10.1]:46881 "EHLO silver.sucs.swan.ac.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755498AbZC2OYh (ORCPT ); Sun, 29 Mar 2009 10:24:37 -0400 Date: Sun, 29 Mar 2009 15:24:32 +0100 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: <20090329142432.GA15578@sucs.org> References: <20090303041222.GA1238@hash.localnet> <20090303200352.GA8343@silver.sucs.org> <20090304120759.GA6519@hash.localnet> <20090306094249.GA10236@silver.sucs.org> <20090308030928.GB14966@hash.localnet> <49B38FB7.3000002@gmail.com> <20090310004344.GA23466@hash.localnet> <20090312061047.GA13401@silver.sucs.org> <20090313095213.GA14250@silver.sucs.org> <20090320131437.GA30120@hash.localnet> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090320131437.GA30120@hash.localnet> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1081 Lines: 23 On Fri, Mar 20, 2009 at 09:14:37AM -0400, Bob Copeland wrote: > > Looks like the skb was reused right after it was freed by the mac80211 > workqueue so that seems inline with the idea that the list is getting > corrupted somehow. On top of the last patch, would you mind running > this overnight? It'll dump a lot of debug info, I'm really only > interested in the last 5 invocations of ath5k_debug_printrxbuffs or so > before the poison. During a scan you'll see lots of rx_start/rx_stop. I've been away travelling for the past week and I move house on the 1st April (which will make testing this much harder from then on) but I'll try to get one final test in before the move. Do you need an ftrace in addition to dmesg for this? If so is it better to leave ieee calls out of the ftrace? -- 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/