Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751862AbbLIGpr (ORCPT ); Wed, 9 Dec 2015 01:45:47 -0500 Received: from zeniv.linux.org.uk ([195.92.253.2]:46735 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750819AbbLIGpq (ORCPT ); Wed, 9 Dec 2015 01:45:46 -0500 Date: Wed, 9 Dec 2015 06:45:42 +0000 From: Al Viro To: Dominique Martinet Cc: Andy Lutomirski , "linux-kernel@vger.kernel.org" , V9FS Developers , Linux FS Devel Subject: Re: [V9fs-developer] Hang triggered by udev coldplug, looks like a race Message-ID: <20151209064542.GW20997@ZenIV.linux.org.uk> References: <20151207224643.GA10531@nautica> <20151208023331.GJ20997@ZenIV.linux.org.uk> <20151209062316.GA29917@nautica> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20151209062316.GA29917@nautica> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 990 Lines: 20 On Wed, Dec 09, 2015 at 07:23:16AM +0100, Dominique Martinet wrote: > Andy Lutomirski wrote on Tue, Dec 08, 2015: > > Trace attached. I don't see anything wrong, but I also don't know > > what I'm looking for. > > Actually doesn't look good, not sure if trace could be missing messages > but it looks like tags get reused... > > Quick and dirty parse script (attached output, it doesn't handle TFLUSH > but there are none in his message): There's also not a single RCLUNK in there, which looks like missing packets. AFAICS, all (apparent) tag reuses caught by your awk script are of that nature. And all RERROR are plain "no such file" in response to TWALK; all those TCLUNK in there get no reply whatsoever - neither success nor failure... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/