From patchwork Thu Jan 28 11:56:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: samirweng1979 X-Patchwork-Id: 373125 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8586EC433E6 for ; Thu, 28 Jan 2021 11:59:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6062A64DDA for ; Thu, 28 Jan 2021 11:59:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231331AbhA1L7A (ORCPT ); Thu, 28 Jan 2021 06:59:00 -0500 Received: from m12-14.163.com ([220.181.12.14]:40790 "EHLO m12-14.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231277AbhA1L6t (ORCPT ); Thu, 28 Jan 2021 06:58:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id; bh=otN7IfI2auM6c0wAEd 6hACXJoifBWMuiImQyMfCVNuw=; b=cyk14zuccFKgmS0YdOg9SZ0YOef57qRF6Y rEIQPEY2wWO9G+Atb1a9EnfBE33p3zdEF89rL70qEtMWssIcGh9Oept4B76NdVH1 3oKQ4odY1kwueJVeSLngF9OUA1v6LDHKc0+FAyedkPh2kQqyv1s0D5uuAbQnHp+0 km5QXeqhI= Received: from wengjianfeng.ccdomain.com (unknown [218.17.89.92]) by smtp10 (Coremail) with SMTP id DsCowAA3KAR6phJgKQgLiQ--.2729S2; Thu, 28 Jan 2021 19:56:43 +0800 (CST) From: samirweng1979 To: johannes@sipsolutions.net, davem@davemloft.net, kuba@kernel.org Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, wengjianfeng Subject: [PATCH] nl80211: ignore the length of hide ssid is zero in scan Date: Thu, 28 Jan 2021 19:56:52 +0800 Message-Id: <20210128115652.8564-1-samirweng1979@163.com> X-Mailer: git-send-email 2.15.0.windows.1 X-CM-TRANSID: DsCowAA3KAR6phJgKQgLiQ--.2729S2 X-Coremail-Antispam: 1Uf129KBjvdXoWrtrW3GF1UGry3tw4Utry8Grg_yoW3CrX_ur 4v9F1vgFyxJ3WUWFW8ua17XrsYk348WFs3C3sIkFy5C3s0qFWDCwn5JF95Jr17Gr1q9Fy8 G3Z8u34YqF1UujkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IUYGtCUUUUUU== X-Originating-IP: [218.17.89.92] X-CM-SenderInfo: pvdpx25zhqwiqzxzqiywtou0bp/1tbirBwosVr7sDtEBwAAsA Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: wengjianfeng If the length of hide ssid is zero in scan, don't pass it to driver, which doesn't make any sense. Signed-off-by: wengjianfeng --- net/wireless/nl80211.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 775d0c4..d62e2aa 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -8727,6 +8727,9 @@ static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info) err = -EINVAL; goto out_free; } + /* ignore the length of hide ssid is zero */ + if (nla_len(attr) == 0) + continue; request->ssids[i].ssid_len = nla_len(attr); memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));