From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755169AbYEZUmT (ORCPT ); Mon, 26 May 2008 16:42:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752499AbYEZUmF (ORCPT ); Mon, 26 May 2008 16:42:05 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:35234 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751859AbYEZUmE (ORCPT ); Mon, 26 May 2008 16:42:04 -0400 Date: Mon, 26 May 2008 22:41:40 +0200 From: Ingo Molnar To: Ilpo J?rvinen Cc: LKML , Netdev , "David S. Miller" , "Rafael J. Wysocki" , Andrew Morton Subject: Re: [bug] stuck localhost TCP connections, v2.6.26-rc3+ Message-ID: <20080526204140.GA13186@elte.hu> References: <20080526115628.GA31316@elte.hu> <20080526135940.GB24870@elte.hu> <20080526141252.GA31352@elte.hu> <20080526162328.GA9089@elte.hu> <20080526165407.GB24098@elte.hu> <20080526181216.GA12400@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080526181216.GA12400@elte.hu> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Ingo Molnar wrote: > > It's well possible that e.g., net namespaces have some bug in > > handling of orphaned tcp. > > yes, that would match the symptoms i think. I half-assumed that it's a > state machine problem so i didnt even check what the reader does - and > in this case it appears to not exist at all anymore ;-) after ~7 hours of uptime the networking code produced this assertion: [25441.140000] KERNEL: assertion (!sk->sk_ack_backlog) failed at net/ipv4/inet_connection_sock.c (642) no further information in the logs. I kept the failing system booted up for 8 hours and will reboot it now. Ingo