Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756147Ab0DUS30 (ORCPT ); Wed, 21 Apr 2010 14:29:26 -0400 Received: from kroah.org ([198.145.64.141]:34597 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756117Ab0DUS3Y (ORCPT ); Wed, 21 Apr 2010 14:29:24 -0400 Date: Wed, 21 Apr 2010 11:27:47 -0700 From: Greg KH To: YuPing Luo Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Subject: Re: core: workque: workqueue recursion when unplugging usb WCDMA modem on 2.6.32 kernel Message-ID: <20100421182747.GB7876@kroah.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 797 Lines: 21 On Tue, Apr 20, 2010 at 11:27:55PM -0700, YuPing Luo wrote: > Hi, > I have one ARM11-based board, while upgrading the kernel from 27 to > 32, got the workqueue recursion warning almost, and the console get > lost. While the issue can be resolved by applying the patch "[PATCH v2] > core: workqueue: return on workqueue recursion", and I am still > struggling to find the root cause. Is your console on a usb to serial device? Or a serial port? if usb to serial, can you try .33-rc5 and let us know if that solves the problem? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/