From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932906AbWLSTOm (ORCPT ); Tue, 19 Dec 2006 14:14:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932904AbWLSTOm (ORCPT ); Tue, 19 Dec 2006 14:14:42 -0500 Received: from smtp.osdl.org ([65.172.181.25]:55860 "EHLO smtp.osdl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932896AbWLSTOm (ORCPT ); Tue, 19 Dec 2006 14:14:42 -0500 Date: Tue, 19 Dec 2006 10:58:30 -0800 From: Andrew Morton To: Dave Hansen Cc: Linux Kernel Mailing List Subject: Re: Processes stuck on I/O (2.6.20-rc1+git) Message-Id: <20061219105830.b7a286ea.akpm@osdl.org> In-Reply-To: <1166553975.7834.19.camel@localhost.localdomain> References: <1166553975.7834.19.camel@localhost.localdomain> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 19 Dec 2006 10:46:15 -0800 Dave Hansen wrote: > I was copying some stuff off of a USB device this morning, and saw the > process freeze. It was unkillable, but I figured the USB device had > died and done something funny. A little bit later, I had a git process > do the same thing, but it was confined to dealing with an actual > attached disk. > > The processes that hung were git-prune-packed and gtkpod. You can see > them in the sysrq-t output below. My kernel is from a git pull, post > 2.6.20-rc1: git-prune-packed is running sys_sync(), so it's most likely stuck on the USB device as well. Send rude email to lunux-usb-devel, join queue ;)