Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756161AbYGJW7a (ORCPT ); Thu, 10 Jul 2008 18:59:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755108AbYGJW7W (ORCPT ); Thu, 10 Jul 2008 18:59:22 -0400 Received: from yx-out-2324.google.com ([74.125.44.29]:3751 "EHLO yx-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754664AbYGJW7V (ORCPT ); Thu, 10 Jul 2008 18:59:21 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=mFjHIfEKtm0Pll9AtBseVGBfz0F5hwMotQaK0xK3z4XkKQ8yIbPr0Lw0WNtRJAY7q7 asXuQgJIElNOiO/QS8qB9Y1vaMYnPqdCRVoqlEt+bHEH+xUom4w33e43dXxYfgLLyy3W iFL7KSIA2BMIOTnxmRm4CwqSZAjAs6ZT1pNS8= Message-ID: <646765f40807101559q51fbfc50x8e3466e5f202e0c8@mail.gmail.com> Date: Fri, 11 Jul 2008 08:59:20 +1000 From: "Julian Calaby" To: "Mikulas Patocka" Subject: Re: [SUGGESTION]: drop virtual merge accounting in I/O requests Cc: sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, "Jens Axboe" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 946 Lines: 28 On Fri, Jul 11, 2008 at 07:56, Mikulas Patocka wrote: > Hi > > I'm getting crashes with InitIO A100u2w controller on Sparc64 (I had to fix > the endianity issues in the driver, but that's unrelated). > > When I examined the crashes, it turned out that SCSI layer passed requests > with too many segments. The controller has at most 32 SG entries per > request. It sets shost->sg_tablesize to 32, but despite this, larger > requests were submitted to it --- this resulted in overwriting random memory > and crashes. [snip] Should this have been CC'd to linux-scsi too? This sounds like it could be a bug at their end. Thanks, -- Julian Calaby Email: julian.calaby@gmail.com -- 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/