From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [Bugme-new] [Bug 8736] New: New TC deadlock scenario Date: Sat, 14 Jul 2007 20:49:51 -0700 (PDT) Message-ID: <20070714.204951.112046547.davem@davemloft.net> References: <469521F0.1010803@trash.net> <4698EF3B.5070907@trash.net> <1184431535.14136.62.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: kaber@trash.net, akpm@linux-foundation.org, netdev@vger.kernel.org, bugme-daemon@kernel-bugs.osdl.org To: ranko@spidernet.net Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:55484 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751448AbXGODtt (ORCPT ); Sat, 14 Jul 2007 23:49:49 -0400 In-Reply-To: <1184431535.14136.62.camel@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Ranko Zivojnovic Date: Sat, 14 Jul 2007 19:45:35 +0300 > On Sat, 2007-07-14 at 17:43 +0200, Patrick McHardy wrote: > > Patrick McHardy wrote: > > > Andrew Morton wrote: > > > > > >>>http://bugzilla.kernel.org/show_bug.cgi?id=8736 > > >>> > > >>>Here is another scenario I bumped onto - qdisc_watchdog_cancel() and > > >>>qdisc_restart() deadlock. > > >>> > > >>>[...] > > >>>DEADLOCK! > > > > > > > > > > > > Good catch. > > > > > > Please try reverting commit 1936502d00ae6c2aa3931c42f6cf54afaba094f2, > > > that should fix it. > > > > > > Ranko, did you get a chance to test this? I've attached the patch > > since it doesn't revert cleanly .. > > I have the commit reverted on my tree and have been testing it along > with the other changes to qdisc code I'm currently doing and it does > rectify the problem. > > Acked-by: Ranko Zivojnovic Applied, thanks everyone.