From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751472Ab2L1HGz (ORCPT ); Fri, 28 Dec 2012 02:06:55 -0500 Received: from dcvr.yhbt.net ([64.71.152.64]:52762 "EHLO dcvr.yhbt.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750964Ab2L1HGw (ORCPT ); Fri, 28 Dec 2012 02:06:52 -0500 Date: Fri, 28 Dec 2012 07:06:52 +0000 From: Eric Wong To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Andreas Voellmy , viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org, "Junchang(Jason) Wang" Subject: Re: ppoll() stuck on POLLIN while TCP peer is sending Message-ID: <20121228070652.GA6292@dcvr.yhbt.net> References: <20121228014503.GA5017@dcvr.yhbt.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20121228014503.GA5017@dcvr.yhbt.net> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Eric Wong wrote: > I'm finding ppoll() unexpectedly stuck when waiting for POLLIN on a > local TCP socket. The isolated code below can reproduces the issue > after many minutes (<1 hour). It might be easier to reproduce on > a busy system while disk I/O is happening. Ugh, I can't seem to reproduce this anymore... Will try something else tomorrow.