From nobody@FreeBSD.org  Fri Jun 24 23:23:36 2011
Return-Path: <nobody@FreeBSD.org>
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 5047D106564A
	for <freebsd-gnats-submit@FreeBSD.org>; Fri, 24 Jun 2011 23:23:36 +0000 (UTC)
	(envelope-from nobody@FreeBSD.org)
Received: from red.freebsd.org (red.freebsd.org [IPv6:2001:4f8:fff6::22])
	by mx1.freebsd.org (Postfix) with ESMTP id 411DA8FC14
	for <freebsd-gnats-submit@FreeBSD.org>; Fri, 24 Jun 2011 23:23:36 +0000 (UTC)
Received: from red.freebsd.org (localhost [127.0.0.1])
	by red.freebsd.org (8.14.4/8.14.4) with ESMTP id p5ONNaJF084352
	for <freebsd-gnats-submit@FreeBSD.org>; Fri, 24 Jun 2011 23:23:36 GMT
	(envelope-from nobody@red.freebsd.org)
Received: (from nobody@localhost)
	by red.freebsd.org (8.14.4/8.14.4/Submit) id p5ONNZQZ084346;
	Fri, 24 Jun 2011 23:23:35 GMT
	(envelope-from nobody)
Message-Id: <201106242323.p5ONNZQZ084346@red.freebsd.org>
Date: Fri, 24 Jun 2011 23:23:35 GMT
From: George Kontostanos <gkontos.mail@gmail.com>
To: freebsd-gnats-submit@FreeBSD.org
Subject: ata: SIGNATURE: ffffffff with Promise PDC40718
X-Send-Pr-Version: www-3.1
X-GNATS-Notify:

>Number:         158268
>Category:       kern
>Synopsis:       [ata] SIGNATURE: ffffffff with Promise PDC40718
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Jun 24 23:30:08 UTC 2011
>Closed-Date:    
>Last-Modified:  Sun Jun 26 20:40:20 UTC 2011
>Originator:     George Kontostanos
>Release:        8.2-Stable
>Organization:
>Environment:
FreeBSD hp.aicom.loc 8.2-STABLE FreeBSD 8.2-STABLE #0: Mon Jun  6 19:00:19 EEST 2011     gkontos@hp.aicom.loc:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
Using a SATA Promise PDC40718 controller with FreeBSD 8.2-Release and 8.2-Stable causes the following messages to appear:

Jun 22 17:08:53 hp kernel: ata2: timeout waiting to issue command
Jun 22 17:08:53 hp kernel: ata2: error issuing SETFEATURES ENABLE WCACHE command
Jun 22 17:09:33 hp kernel: ad4: WARNING - SET_MULTI taskqueue timeout - completing request directly
Jun 22 17:09:33 hp kernel: ad4: WARNING - WRITE_DMA48 requeued due to channel reset LBA=321558741
Jun 22 17:09:34 hp kernel: ata2: SIGNATURE: 00000101
Jun 22 17:09:34 hp kernel: ad4: WARNING - WRITE_DMA48 requeued due to channel reset LBA=321558869
Jun 22 17:09:34 hp kernel: ata2: FAILURE - already active DMA on this device
Jun 22 17:09:34 hp kernel: ata2: setting up DMA failed
Jun 22 17:09:34 hp kernel: ata2: FAILURE - already active DMA on this device
Jun 22 17:09:34 hp kernel: ata2: setting up DMA failed

The relevant disk has been replaced 3 times. Smartmon tools have shown no errors.
The controller is listed as being supported in:

http://www.freebsd.org/cgi/man.cgi?query=ata&sektion=4&manpath=FreeBSD+8.2-RELEASE

However, there is a PR#116935 indicating that it should not be used.

http://www.freebsd.org/cgi/query-pr.cgi?pr=116935&cat=


>How-To-Repeat:
There is really no way to repeat the problem. It just happens after a period of approximately 2 months without any other indication. 
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted:
