From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Tokarev Subject: Re: kernel BUG at drivers/scsi/aic7xxx/aic79xx_osm.c:1490! Date: Sun, 09 Mar 2008 19:32:14 +0300 Message-ID: <47D4110E.4080709@msgid.tls.msk.ru> References: <47D3C8A1.6040409@msgid.tls.msk.ru> <20080309212916T.tomof@acm.org> <1205075315.3792.12.camel@localhost.localdomain> <47D402C6.3070505@msgid.tls.msk.ru> <47D40567.7070409@msgid.tls.msk.ru> <1205078371.3792.20.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from hobbit.corpit.ru ([81.13.94.6]:24220 "EHLO hobbit.corpit.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750774AbYCIQc3 (ORCPT ); Sun, 9 Mar 2008 12:32:29 -0400 In-Reply-To: <1205078371.3792.20.camel@localhost.localdomain> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: James Bottomley Cc: FUJITA Tomonori , linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, fujita.tomonori@lab.ntt.co.jp James Bottomley wrote: [] >> (which doesn't look like a good thing, provided this >> machine has 6Gb of memory...) > > That's the root cause then. > > There's a bug in the generic implementation of dma_get_required_mask(), > a fix for which is below, if you could try it (still with the debugging > patches to make sure it's working). With the 2 patches applied: DEBUG: RETURNED REQUIRED MASK 1ffffffff DEBUG: SET 39 BIT ADDRESSING I'm running the tests now. But for some reason I think it will be ok... ;) Thanks! /mjt