From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756289Ab0ENBp5 (ORCPT ); Thu, 13 May 2010 21:45:57 -0400 Received: from mail.atheros.com ([12.36.123.2]:56529 "EHLO mail.atheros.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755280Ab0ENBpz (ORCPT ); Thu, 13 May 2010 21:45:55 -0400 Date: Thu, 13 May 2010 18:45:53 -0700 From: "Luis R. Rodriguez" To: Luis Rodriguez CC: "Justin P. Mattock" , Bruno Randolf , "linux-wireless@vger.kernel.org" , Linux Kernel Mailing List Subject: Re: ath9k: BUG kmalloc-8192: Poison overwritten Message-ID: <20100514014553.GD2170@tux> References: <4BEC7A84.3010503@gmail.com> <4BEC9E6B.30809@gmail.com> <201005141008.20667.br1@einfach.org> <4BECA3AE.4070607@gmail.com> <20100514012314.GA2170@tux> <4BECA6AC.9060609@gmail.com> <20100514014311.GC2170@tux> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20100514014311.GC2170@tux> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 13, 2010 at 06:43:11PM -0700, Luis Rodriguez wrote: > On Thu, May 13, 2010 at 06:26:04PM -0700, Justin P. Mattock wrote: > > On 05/13/10 18:23, Luis R. Rodriguez wrote: > > > On Thu, May 13, 2010 at 06:13:18PM -0700, Justin P. Mattock wrote: > > >> On 05/13/10 18:08, Bruno Randolf wrote: > > >>> On Friday 14 May 2010 09:50:51 Justin P. Mattock wrote: > > >>>> On 05/13/10 17:28, Luis R. Rodriguez wrote: > > >>>>> On Thu, May 13, 2010 at 5:21 PM, Justin P. Mattock > > >>>>> > > >>>>> wrote: > > >>>>>> On 05/13/10 16:01, Luis R. Rodriguez wrote: > > >>>>>>> On Thu, May 13, 2010 at 3:17 PM, Justin P. Mattock > > >>>>>>> > > >>>>>>> wrote: > > >>>>>>>> not sure what this is, but while at a convention > > >>>>>>>> I was trying to access the internet and(below is > > >>>>>>>> full dmesg) this showed up. > > >>>>>>>> > > >>>>>>>> After receiving this, I sat and tried to re-create > > >>>>>>>> my steps to reproduce but had no luck(was even going > > >>>>>>>> todo a bisect n the spot if I could re-create). > > >>>>>>> > > >>>>>>> OK this stuff is hard to reproduce it seems.. you have an Atheros > > >>>>>>> AR5418 MAC/BB Rev:2 AR5133 RF Rev:81, what kconfig option do you use > > >>>>>>> to get the poison stuff? I am just surprised we haven't seen it > > >>>>>>> ourselves yet. Let me make sure all of us get this kconfig option > > >>>>>>> enabled. > > >>>>>>> > > >>>>>>> Luis > > >>>>>> > > >>>>>> CONFIG_ATH_COMMON=m > > >>>>>> # CONFIG_ATH_DEBUG is not set > > >>>>>> CONFIG_ATH5K=m > > >>>>>> # CONFIG_ATH5K_DEBUG is not set > > >>>>>> CONFIG_ATH9K_HW=m > > >>>>>> CONFIG_ATH9K_COMMON=m > > >>>>>> CONFIG_ATH9K=m > > >>>>>> # CONFIG_ATH9K_DEBUGFS is not set > > >>>>>> > > >>>>>> if you need my .config let me know. > > >>>>>> (I can try again reproducing, but man > > >>>>>> just doesn't easily fire off). > > >>>>> > > >>>>> Oh I mean the config options to enable the poison rant. > > >>>>> > > >>>>> Luis > > >>>> > > >>>> shoot.. not sure how to grep for the right info > > >>>> in the .config for you, heres what grepping for COFIG_DEBUG > > >>>> looks like: > > >>>> CONFIG_DEBUG_FS=y > > >>>> CONFIG_DEBUG_KERNEL=y > > >>>> CONFIG_DEBUG_RT_MUTEXES=y > > >>>> CONFIG_DEBUG_PI_LIST=y > > >>>> CONFIG_DEBUG_SPINLOCK=y > > >>>> CONFIG_DEBUG_MUTEXES=y > > >>>> CONFIG_DEBUG_BUGVERBOSE=y > > >>>> CONFIG_DEBUG_MEMORY_INIT=y > > >>>> CONFIG_DEBUG_STACKOVERFLOW=y > > >>> > > >>> oh, this reminds me of a similar report we had for ath5k: > > >>> > > >>> https://bugzilla.kernel.org/show_bug.cgi?id=15861 > > >>> > > >>> the subject on this mailing list was "ath5k misbehaving affecting other kernel > > >>> parts unrelated?" > > >>> > > >>> bruno > > >>> > > >> > > >> Could be.. From what I remember > > >> all I was doing was switching from > > >> one wireless network to another > > >> (then opening firefox to sign my life away). > > > > > > Were you using network-manager? Or the supplicant manually? > > > > > > Luis > > > > > > > I've got wicd(1.5.9) manager > > running over here. > > Can you try this: > > diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c > index 8c79548..a372f2c 100644 > --- a/drivers/net/wireless/ath/ath9k/init.c > +++ b/drivers/net/wireless/ath/ath9k/init.c > @@ -599,6 +599,7 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid, > */ > ath_read_cachesize(common, &csz); > common->cachelsz = csz << 2; /* convert to bytes */ > + printk("ATH9K: cachelsz: %d\n", common->cachelsz); > > /* Initializes the hardware for all supported chipsets */ > ret = ath9k_hw_init(ah); > > > Would like to see what you get there on dmesg upon load. Actually don't bother I just realized you can get this with ATH_DBG_CONFIG enabled. ath_print(common, ATH_DBG_CONFIG, "cachelsz %u rxbufsize %u\n", common->cachelsz, common->rx_bufsize); This is already in the code so just modprobe ath9k debug=0x00000200 Luis