From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Hounschell Subject: New 2.6.24.2 SG_IO SCSI problems Date: Thu, 21 Feb 2008 10:15:20 -0500 Message-ID: <47BD9588.9080803@compro.net> Reply-To: markh@compro.net Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mx2.compro.net ([216.54.166.4]:30997 "EHLO mx2.compro.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753236AbYBUPSS (ORCPT ); Thu, 21 Feb 2008 10:18:18 -0500 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Cc: linux-kernel@vger.kernel.org I seem to have run into some sort of regression in the SG_IO interface of 2.6.24.2. I have an application that up until 2.6.24 worked fine. The 2.6.23.16 kernel works fine. During reads I get these kernel messages. Writes and other functions _seem_ OK. Actually basic reads are working. Its with large BC reads using an io_vec list that the problem shows up. Feb 21 09:27:51 harley kernel: (scsi1:A:2:0): data overrun detected in Data-in phase. Tag == 0x1. Feb 21 09:27:51 harley kernel: (scsi1:A:2:0): Have seen Data Phase. Length = 256. NumSGs = 1. Feb 21 09:27:51 harley kernel: sg[0] - Addr 0x06256100 : Length 256 Feb 21 09:27:51 harley kernel: (scsi1:A:2:0): data overrun detected in Data-in phase. Tag == 0x1. Feb 21 09:27:51 harley kernel: (scsi1:A:2:0): Have seen Data Phase. Length = 256. NumSGs = 1. Feb 21 09:27:51 harley kernel: sg[0] - Addr 0x06256100 : Length 256 Feb 21 09:27:51 harley kernel: (scsi1:A:2:0): data overrun detected in Data-in phase. Tag == 0x1. Feb 21 09:27:51 harley kernel: (scsi1:A:2:0): Have seen Data Phase. Length = 256. NumSGs = 1. Feb 21 09:27:51 harley kernel: sg[0] - Addr 0x06256100 : Length 256 Feb 21 09:27:51 harley kernel: (scsi1:A:2:0): data overrun detected in Data-in phase. Tag == 0x1. Feb 21 09:27:51 harley kernel: (scsi1:A:2:0): Have seen Data Phase. Length = 256. NumSGs = 1. Feb 21 09:27:51 harley kernel: sg[0] - Addr 0x06256100 : Length 256 . . . . . . The status elements of the sg_io_hdr_t structure used in the application returns status = 0x0 msg_status 0x0 host_status = 0x7 driver_status = 0x0 The hardware in use on this particular machine is an simple Adaptec AHA-2930CU talking to an old IMPRIMIS 94601-15 1.2GB disk drive. Again, all this works fine with the 2.6.23.11 kernel Any help would be appreciated Regards Mark Hounschell