Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753670AbYCLUwp (ORCPT ); Wed, 12 Mar 2008 16:52:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751659AbYCLUwh (ORCPT ); Wed, 12 Mar 2008 16:52:37 -0400 Received: from gate.crashing.org ([63.228.1.57]:41045 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751524AbYCLUwg (ORCPT ); Wed, 12 Mar 2008 16:52:36 -0400 Subject: Re: [BUG] 2.6.25-rc5-mm1 kernel panic with "Exception: 501 " on powerpc From: Benjamin Herrenschmidt Reply-To: benh@kernel.crashing.org To: Andrew Morton Cc: Kamalesh Babulal , linuxppc-dev@ozlabs.org, Matthew Wilcox , linux-kernel@vger.kernel.org In-Reply-To: <20080312104645.34e58319.akpm@linux-foundation.org> References: <20080311011434.ad8c8d7d.akpm@linux-foundation.org> <47D7D2C9.4090001@linux.vnet.ibm.com> <20080312104645.34e58319.akpm@linux-foundation.org> Content-Type: text/plain Date: Thu, 13 Mar 2008 07:40:06 +1100 Message-Id: <1205354406.9431.23.camel@pasglop> Mime-Version: 1.0 X-Mailer: Evolution 2.12.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 682 Lines: 19 > Beats me. Maybe we're still enabling interrupts too early. But the new > semaphore code got fixed (didn't it?) Won't lockdep/irqtrace warn if that happens ? You don't yet have the lockdep patches for ppc64 (I'm still trying to find out why they break iSeries) but it should warn of such a spurrious IRQ enable on other archs too... At least, from a quick look at the code, it -seems- that it does have such a test. Cheers, Ben. -- 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/