From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932137AbWGGMBO (ORCPT ); Fri, 7 Jul 2006 08:01:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932138AbWGGMBO (ORCPT ); Fri, 7 Jul 2006 08:01:14 -0400 Received: from ns.virtualhost.dk ([195.184.98.160]:5965 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S932137AbWGGMBO (ORCPT ); Fri, 7 Jul 2006 08:01:14 -0400 Date: Fri, 7 Jul 2006 14:03:33 +0200 From: Jens Axboe To: Michael Kerrisk Cc: Andrew Morton , michael.kerrisk@gmx.net, linux-kernel@vger.kernel.org Subject: Re: splice/tee bugs? Message-ID: <20060707120333.GR4188@suse.de> References: <20060707070703.165520@gmx.net> <20060707040749.97f8c1fc.akpm@osdl.org> <20060707114235.243260@gmx.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060707114235.243260@gmx.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 07 2006, Michael Kerrisk wrote: > > > c) Occasionally the command line just hangs, producing no output. > > > In this case I can't kill it with ^C or ^\. This is a > > > hard-to-reproduce behaviour on my (x86) system, but I have > > > seen it several times by now. > > > > aka local DoS. Please capture sysrq-T output next time. > > I don't have sysrq configured in the kernel that I'm testing at > the moment (I'll build again with sysrq), but have just got > the error again. For what it's worth, "ps l" says: > > F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND > 0 1000 7099 630 16 0 0 0 - D+ pts/30 0:00 [ktee] Try ps -eo cmd,wchan, it should give you a little more at least. But sysrq-t is the best, of course. I'll see about reproducing locally. -- Jens Axboe