Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756104AbbLQVHS (ORCPT ); Thu, 17 Dec 2015 16:07:18 -0500 Received: from mail-ob0-f171.google.com ([209.85.214.171]:35745 "EHLO mail-ob0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756003AbbLQVHO (ORCPT ); Thu, 17 Dec 2015 16:07:14 -0500 MIME-Version: 1.0 In-Reply-To: <20151209064542.GW20997@ZenIV.linux.org.uk> References: <20151207224643.GA10531@nautica> <20151208023331.GJ20997@ZenIV.linux.org.uk> <20151209062316.GA29917@nautica> <20151209064542.GW20997@ZenIV.linux.org.uk> From: Andy Lutomirski Date: Thu, 17 Dec 2015 13:06:54 -0800 Message-ID: Subject: Re: [V9fs-developer] Hang triggered by udev coldplug, looks like a race To: Al Viro Cc: Dominique Martinet , "linux-kernel@vger.kernel.org" , V9FS Developers , Linux FS Devel Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1190 Lines: 26 On Tue, Dec 8, 2015 at 10:45 PM, Al Viro wrote: > 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... This could be QEMU's analysis script screwing up. Is there a good way for me to gather more info? --Andy -- 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/