From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from charlotte.tuxdriver.com ([70.61.120.58]:52115 "EHLO smtp.tuxdriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752292AbYJCPKn (ORCPT ); Fri, 3 Oct 2008 11:10:43 -0400 Received: from sapphire.tuxdriver.com ([70.61.120.61] helo=localhost) by smtp.tuxdriver.com with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.63) (envelope-from ) id 1KlmIk-0002Ah-6T for linux-wireless@vger.kernel.org; Fri, 03 Oct 2008 11:10:42 -0400 Date: Fri, 3 Oct 2008 11:10:06 -0400 From: "John W. Linville" To: linux-wireless@vger.kernel.org Subject: [mingo@elte.hu: Re: ath9k: panic on tip/master] Message-ID: <20081003151006.GB3368@tuxdriver.com> (sfid-20081003_171048_739115_6AB15022) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-wireless-owner@vger.kernel.org List-ID: ----- Forwarded message from Ingo Molnar ----- > Delivery-date: Fri, 03 Oct 2008 06:03:27 -0400 > Date: Fri, 3 Oct 2008 12:02:11 +0200 > From: Ingo Molnar > To: Steven Noonan > Cc: linux-kernel@vger.kernel.org, ath9k-devel@lists.ath9k.org, > lrodriguez@atheros.com > Subject: Re: ath9k: panic on tip/master > In-Reply-To: > List-ID: > X-Mailing-List: linux-kernel@vger.kernel.org > > * Steven Noonan wrote: > > > Hey folks, > > > > Just got a panic on tip. According to the stack trace, ath9k is what > > decided to bomb. > > > > http://www.uplinklabs.net/~tycho/linux/ath9k_panic_tip_10.3.2008.jpg > > > > Note: Although it says 'sudo modprobe radeon' on the bash prompt above > > the panic, I never got to hit 'enter' on that command before the panic > > occurred. > > it appears to me that ath9k's eth_rx_input() takes a spinlock that is > not initialized (or already destroyed by the allocator). > > this would be consistent with an IRQ storm hitting some race in the > ath9k driver init sequence. For example if request_irq() is done before > all structures that the IRQ handler relies on are properly initialized. > > i.e. this has the signature of a genuine ath9k bug. > > Ingo > -- > 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/ > ----- End forwarded message ----- -- John W. Linville Linux should be at the core linville@tuxdriver.com of your literate lifestyle.