From patchwork Thu Nov 2 10:35:29 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vitaly Kuznetsov X-Patchwork-Id: 833283 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3ySM2C1HtVz9t34 for ; Thu, 2 Nov 2017 21:36:19 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755505AbdKBKff (ORCPT ); Thu, 2 Nov 2017 06:35:35 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53682 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752780AbdKBKfe (ORCPT ); Thu, 2 Nov 2017 06:35:34 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1569CC057FA6; Thu, 2 Nov 2017 10:35:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 1569CC057FA6 Authentication-Results: ext-mx08.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx08.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=vkuznets@redhat.com Received: from vitty.brq.redhat.com (unknown [10.43.2.155]) by smtp.corp.redhat.com (Postfix) with ESMTP id 69B9B60602; Thu, 2 Nov 2017 10:35:32 +0000 (UTC) From: Vitaly Kuznetsov To: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Eric Dumazet Subject: [PATCH net-next v2 0/2] hv_netvsc: fix a hang on channel/mtu changes Date: Thu, 2 Nov 2017 11:35:29 +0100 Message-Id: <20171102103531.5514-1-vkuznets@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Thu, 02 Nov 2017 10:35:34 +0000 (UTC) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org It was found that netvsc driver doesn't survive e.g. # while true; do ethtool -L eth0 combined 4; ethtool -L eth0 combined 8; done" test. I was able to identify a hang in guest/host communication, it is fixed by PATCH1 of this series. PATCH2 is a cosmetic change masking unneeded messages. Changes since v1: - Throw away patches 2 and 3 of the original series as one is unneeded and the other is not justified [Eric Dumazet, Stephen Hemminger] so I'm only fixing the hang now, the crash doesn't reproduce. Will keep an eye on it. Vitaly Kuznetsov (2): hv_netvsc: netvsc_teardown_gpadl() split hv_netvsc: hide warnings about uninitialized/missing rndis device drivers/net/hyperv/netvsc.c | 69 ++++++++++++++++++++------------------- drivers/net/hyperv/rndis_filter.c | 4 +-- 2 files changed, 38 insertions(+), 35 deletions(-)