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[2620:137:e000::1:18]) by mx.google.com with ESMTPS id l6-20020a170903120600b001542ec95b04si16591606plh.589.2022.04.06.06.22.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Apr 2022 06:22:05 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=gtJLS6TP; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 80AB75BA1D6; Wed, 6 Apr 2022 04:03:34 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238986AbiDEWAD (ORCPT + 99 others); Tue, 5 Apr 2022 18:00:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50352 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358103AbiDEK16 (ORCPT ); Tue, 5 Apr 2022 06:27:58 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 47F716BDF0; Tue, 5 Apr 2022 03:15:35 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D8E9F6179E; Tue, 5 Apr 2022 10:15:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E845DC385A2; Tue, 5 Apr 2022 10:15:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1649153734; bh=HkL97IkRDVl1qVRDtmAyoUw5lW9Zl6osxxtIJjv0pGs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gtJLS6TPIAxZVuXUdMMlX8xAJQSdAWOMwpTJguodFV0myd2g9DJtGGnsp2/ttLX3r /BwTbXWgxdtQ2z28zSS7T7BrWO/VOAe5dpBHAWYy2y1FuIV69vppG/COACLJ7mbGoL 6oUdLgPap9br2nO9PlkV55sAlXQSsOC/pd2qNIaA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lorenzo Bianconi , Felix Fietkau , Sasha Levin Subject: [PATCH 5.10 290/599] mt76: mt7615: check sta_rates pointer in mt7615_sta_rate_tbl_update Date: Tue, 5 Apr 2022 09:29:44 +0200 Message-Id: <20220405070307.463836015@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220405070258.802373272@linuxfoundation.org> References: <20220405070258.802373272@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lorenzo Bianconi [ Upstream commit 6a6f457ed5fdf6777536c20644a9e42128a50ec2 ] Check sta_rates pointer value in mt7615_sta_rate_tbl_update routine since minstrel_ht_update_rates can fail allocating rates array. Fixes: 04b8e65922f63 ("mt76: add mac80211 driver for MT7615 PCIe-based chipsets") Signed-off-by: Lorenzo Bianconi Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin --- drivers/net/wireless/mediatek/mt76/mt7615/main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c index 88cdc2badeae..defa207f53d6 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c @@ -673,6 +673,9 @@ static void mt7615_sta_rate_tbl_update(struct ieee80211_hw *hw, struct ieee80211_sta_rates *sta_rates = rcu_dereference(sta->rates); int i; + if (!sta_rates) + return; + spin_lock_bh(&dev->mt76.lock); for (i = 0; i < ARRAY_SIZE(msta->rates); i++) { msta->rates[i].idx = sta_rates->rate[i].idx; -- 2.34.1