From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965139AbVKBRhH (ORCPT ); Wed, 2 Nov 2005 12:37:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751092AbVKBRhG (ORCPT ); Wed, 2 Nov 2005 12:37:06 -0500 Received: from agmk.net ([217.73.31.34]:8716 "EHLO mail.agmk.net") by vger.kernel.org with ESMTP id S1751266AbVKBRhF (ORCPT ); Wed, 2 Nov 2005 12:37:05 -0500 From: =?utf-8?q?Pawe=C5=82_Sikora?= To: linux-kernel@vger.kernel.org Subject: Re: [2.6.14-rt1] slowdown / oops. Date: Wed, 2 Nov 2005 18:36:58 +0100 User-Agent: KMail/1.8.3 Cc: Ingo Molnar MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200511021836.59055.pluto@agmk.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > * Ingo Molnar wrote: > > > more updates: NETFILTER_DEBUG catches the situation too - the problem > > seems to be wrong reference counts on the skb. [...] > > ok, could you check whether the patch below fixes the problem for you? > (I have also put it into -rt4) > > local_bh_disable()/enable() is a NOP under PREEMPT_RT, and the > ip_ct_deliver_cached_events PER_CPU code relies on not being preempted > by the net_rx_action softirq handler. So this is a bug in PREEMPT_RT and > the upstream code should be fine. Thx, -rt4 works fine. -- The only thing necessary for the triumph of evil is for good men to do nothing. - Edmund Burke