From mboxrd@z Thu Jan 1 00:00:00 1970 From: linas@austin.ibm.com (Linas Vepstas) Subject: bug in libata [was Re: [BUG] ide dma_timer_expiry, then hard lockup Date: Tue, 19 Jun 2007 09:56:08 -0500 Message-ID: <20070619145608.GA13904@austin.ibm.com> References: <20070618175713.GD5836@austin.ibm.com> <20070618212704.394912b8@the-village.bc.nu> <20070618204601.GF5836@austin.ibm.com> <20070618220441.3a3af8ca@the-village.bc.nu> <20070618212238.GI5836@austin.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from e34.co.us.ibm.com ([32.97.110.152]:35604 "EHLO e34.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752293AbXFSO4M (ORCPT ); Tue, 19 Jun 2007 10:56:12 -0400 Content-Disposition: inline In-Reply-To: <20070618212238.GI5836@austin.ibm.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Alan Cox Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, linux@highpoint-tech.com On Mon, Jun 18, 2007 at 04:22:38PM -0500, linas wrote: > On Mon, Jun 18, 2007 at 10:04:41PM +0100, Alan Cox wrote: > > please try using the libata > > driver. Its worse. I get a hard hang (sysrq doesn't work) during boot, just when the system goes to read the partition table. Recap: this is an older dual cpu intel box, with a vintage HTP366 (and not a newer HPT370) on the system planar. I'm testing a configration that works fine with the old ide drivers. It looks like libata and scsi comes up. The disk is correctly recognized; i.e. its brand, model number & size are correctly reported. printk shows that it hangs in msdos_partition, trying to read the partition table. The drive light is on full-solid, again suggesting a possible irq storm. Same behaviour for both 2.6.22-rc5-git1 and for 2.6.22-rc4-mm2 I seem to have trouble turning on scsi logging; it doesn't seem to generate any output ... Any suggestions on how to proceed? --linas