From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: Re: 2.6.23-rc[68]-mm: network hangs Date: Sat, 29 Sep 2007 01:31:06 -0700 Message-ID: <20070929013106.4f84320d.akpm@linux-foundation.org> References: <46FD5A82.9070505@free.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Kernel development list , netdev@vger.kernel.org To: Laurent Riffard Return-path: Received: from smtp2.linux-foundation.org ([207.189.120.14]:42035 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754542AbXI2IbL (ORCPT ); Sat, 29 Sep 2007 04:31:11 -0400 In-Reply-To: <46FD5A82.9070505@free.fr> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Fri, 28 Sep 2007 21:48:18 +0200 Laurent Riffard wrote: > Hi, > > >From time to time, I experience some complete network hangs: > > Suddenly, all network connections become unresponsive. Even "ping > 127.0.0.1" doesn't work. SysRq-w does not show any blocked processus. > > When such hang happen, I have to reboot (shutdown does work). > > This is not easily reproducible: it happens several minutes after > boot (could be 45 minutes or 2 hours). I do not use heavy networking > apps (like P2P). My typical usage is a Gnome desktop with browser, > mailer, IM, video or audio streaming. > > I have a single PC connected to a DSL router via ethernet (so no LAN > with NFS or CIFS). > > This happens with 2.6.23-rc8-mm2 and 2.6.23-rc6-mm1. I can't remember > when I first see this problem. Maybe 2 months ago. > > I attached the output of "strace ping 127.0.0.1". How can I collect > some more data when this problem happens ? > I have a second report of this from Uwe Bugla (who has been banished from all vger lists for various naughtinesses). Similar story - after a few hours his network router (which is using ppp in some fashion) craps out and dhcp queries all time out. I'd be suspecting a ppp bug in net-2.6.24.