Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964965AbVL2LgT (ORCPT ); Thu, 29 Dec 2005 06:36:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932585AbVL2LgT (ORCPT ); Thu, 29 Dec 2005 06:36:19 -0500 Received: from nproxy.gmail.com ([64.233.182.206]:7287 "EHLO nproxy.gmail.com") by vger.kernel.org with ESMTP id S932591AbVL2LgT convert rfc822-to-8bit (ORCPT ); Thu, 29 Dec 2005 06:36:19 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=oy+rng50TV1tRgf6NjtGhTtoHZrCcCnxHZEPqIj9NPkglFtC1DlAzjv5aYKmREIl2ktp+PSZm4j2lS9vZaxwVgZ6TkXLqzHnoFz09tLkXjvd4hBcTkinVG0C3uScXOAKxgIJVIC9ByWPQoeKboZjfhftP9dT5KDPs/OXVmpSSOQ= Message-ID: <84144f020512290336p1d46c0a9t1c63e9c8cecc7061@mail.gmail.com> Date: Thu, 29 Dec 2005 13:36:17 +0200 From: Pekka Enberg To: kus Kusche Klaus Subject: Re: SLAB-related panic in 2.6.15-rc7-rt1 on ARM Cc: Ingo Molnar , linux-kernel , clameter@sgi.com, mpm@selenic.com In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1140 Lines: 29 Hi, On 12/29/05, kus Kusche Klaus wrote: > My sa1100-based system panics while booting with 2.6.15-rc7-rt1 when the > SLAB allocator is configured. Everything is fine with the SLOB > allocator. > > Please cc me, I'm currently not subscribed. > > Memory: 62856KB available (1552K code, 381K data, 80K init) > Unhandled fault: alignment exception (0xc0207003) at 0x0000015b > Internal error: : c0207003 [#1] > Modules linked in: > CPU: 0 > PC is at get_page_from_freelist+0x1c/0x3d8 > LR is at __alloc_pages+0x5c/0x2ac Unfortunately, I am clueless of arm (and have no idea what alignment exception is) but the problem is probably related to mm/slab.c using alloc_pages_node() whereas mm/slob.c uses get_free_page(). Do you have CONFIG_BUG enabled? If not, please turn it on to see if gfp_zone() catches an invalid GFP flag coming from the slab. Pekka - 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/