From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick McHardy Subject: Re: SFQ qdisc crashes with limit of 2 packets Date: Tue, 18 Sep 2007 19:31:44 +0200 Message-ID: <46F00B80.7050901@trash.net> References: <46F0087A.3080104@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Cc: Netdev To: Chuck Ebbert Return-path: Received: from stinky.trash.net ([213.144.137.162]:42542 "EHLO stinky.trash.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755766AbXIRRiY (ORCPT ); Tue, 18 Sep 2007 13:38:24 -0400 In-Reply-To: <46F0087A.3080104@redhat.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Chuck Ebbert wrote: > Limit of 1 is forbidden, crashes with 2, works with 3: > >>>From disassembling sch_sfq.ko it seems that it is on line 360 of sch_sfq.c: > sch->qstats.backlog -= skb->len; > where "skb" is an invalid pointer: Is it a NULL pointer or something random?