From owner-freebsd-usb@FreeBSD.ORG  Tue Dec 23 18:26:39 2014
Return-Path: <owner-freebsd-usb@FreeBSD.ORG>
Delivered-To: freebsd-usb@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id DEDCFE91
 for <freebsd-usb@freebsd.org>; Tue, 23 Dec 2014 18:26:39 +0000 (UTC)
Received: from mwork.nabble.com (mwork.nabble.com [162.253.133.43])
 by mx1.freebsd.org (Postfix) with ESMTP id CB0486469A
 for <freebsd-usb@freebsd.org>; Tue, 23 Dec 2014 18:26:39 +0000 (UTC)
Received: from msam.nabble.com (unknown [162.253.133.85])
 by mwork.nabble.com (Postfix) with ESMTP id 0C228E915E4
 for <freebsd-usb@freebsd.org>; Tue, 23 Dec 2014 10:26:33 -0800 (PST)
Date: Tue, 23 Dec 2014 11:26:32 -0700 (MST)
From: kott <kmatpral@yahoo.com>
To: freebsd-usb@freebsd.org
Message-ID: <1419359192795-5975583.post@n5.nabble.com>
Subject: usb_pc_cpu_flush
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailman-Approved-At: Tue, 23 Dec 2014 18:33:59 +0000
X-BeenThere: freebsd-usb@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: FreeBSD support for USB <freebsd-usb.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-usb>,
 <mailto:freebsd-usb-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-usb/>
List-Post: <mailto:freebsd-usb@freebsd.org>
List-Help: <mailto:freebsd-usb-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-usb>,
 <mailto:freebsd-usb-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 23 Dec 2014 18:26:40 -0000

Hello - 
I am seeing this fault when i plugin a external usb device, and was
wondering if this indicates DMA/Cache coherency problem 
-----
_ehci_append_qh: 0xf3dd2300 to 0xf3dc3c00
Kernel page fault with the following non-sleepable locks held:
exclusive sleep mutex ehci0 (usb_def_mtx) r = 0 (0xc73ece74) locked @
sys/dev/usb/usb_transfer.c
exclusive sleep mutex USB device mutex (USB device mutex) r = 0 (0xc73da850)
locked @ /sys/dev/usb/usb_transfer.c

Stopped at      usb_pc_cpu_flush+0xc:   ldr     r2, [r0, #0x018]
----------------------------

Thanks
kott





--
View this message in context: http://freebsd.1045724.n5.nabble.com/usb-pc-cpu-flush-tp5975583.html
Sent from the freebsd-usb mailing list archive at Nabble.com.