From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.99]:48142 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S967767AbeEXJvt (ORCPT ); Thu, 24 May 2018 05:51:49 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Haiyang Zhang , "David S. Miller" Subject: [PATCH 4.14 015/165] hv_netvsc: Add initialization of tx_table in netvsc_device_add() Date: Thu, 24 May 2018 11:37:01 +0200 Message-Id: <20180524093622.599121718@linuxfoundation.org> In-Reply-To: <20180524093621.979359379@linuxfoundation.org> References: <20180524093621.979359379@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Haiyang Zhang [ Commit 6b0cbe315868d613123cf387052ccda5f09d49ea upstream. ] tx_table is part of the private data of kernel net_device. It is only zero-ed out when allocating net_device. We may recreate netvsc_device w/o recreating net_device, so the private netdev data, including tx_table, are not zeroed. It may contain channel numbers for the older netvsc_device. This patch adds initialization of tx_table each time we recreate netvsc_device. Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/hyperv/netvsc.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -1252,6 +1252,9 @@ struct netvsc_device *netvsc_device_add( if (!net_device) return ERR_PTR(-ENOMEM); + for (i = 0; i < VRSS_SEND_TAB_SIZE; i++) + net_device_ctx->tx_table[i] = 0; + net_device->ring_size = ring_size; /* Because the device uses NAPI, all the interrupt batching and