From mboxrd@z Thu Jan 1 00:00:00 1970 From: Denys Fedoryshchenko Subject: CBQ(but probably u32 filter bug), kernel "freeze", at least from 3.2.0 Date: Tue, 28 Aug 2012 07:50:01 +0300 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit To: Return-path: Received: from hosting.visp.net.lb ([194.146.153.11]:43296 "EHLO hosting.visp.net.lb" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751465Ab2H1EuE (ORCPT ); Tue, 28 Aug 2012 00:50:04 -0400 Received: from webmail.visp.net.lb (localhost [127.0.0.1]) by hosting.visp.net.lb (Postfix) with ESMTP id 032F148951D for ; Tue, 28 Aug 2012 07:50:02 +0300 (EEST) Sender: netdev-owner@vger.kernel.org List-ID: Hi Got information from friend, confirmed that it crashed at least two my boxes also :) 3.0.5-rc1 is working fine, 3.4.1 , 3.2.0 from ubuntu - crashing No watchdog fired, and didn't got yet significant debugging information. Very easy to reproduce: 1)run the script 2)ping 192.168.3.234 script: DEV_OUT=eth0 ICMP="match ip protocol 1 0xff" U32="protocol ip u32" DST="match ip dst" tc qdisc add dev $DEV_OUT root handle 1: cbq avpkt 1000 bandwidth 100mbit tc class add dev $DEV_OUT parent 1: classid 1:1 cbq rate 512kbit allot 1500 prio 5 bounded isolated tc filter add dev $DEV_OUT parent 1: prio 3 $U32 $ICMP $DST 192.168.3.234 flowid 1: tc qdisc add dev $DEV_OUT parent 1:1 sfq perturb 10 --- Denys Fedoryshchenko, Network Engineer, Virtual ISP S.A.L.