From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C4A7C433F5 for ; Thu, 14 Apr 2022 14:33:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351461AbiDNObA (ORCPT ); Thu, 14 Apr 2022 10:31:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46930 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344277AbiDNNke (ORCPT ); Thu, 14 Apr 2022 09:40:34 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0D1E81C6; Thu, 14 Apr 2022 06:38:10 -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 ams.source.kernel.org (Postfix) with ESMTPS id B32E5B8296A; Thu, 14 Apr 2022 13:38:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1C143C385A5; Thu, 14 Apr 2022 13:38:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1649943487; bh=H9LiHuXsXrGvbQ+hXXvAOGb01P2CKm+X024ISDaRSrw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Qb+8GsmYVKlyuiGQI4HY84UC+buF4UF9X9iTX3PJQe1FihfilgSI2Gnnye6nnBy5t bHkiFtjvzJqCjVXzdHHDZ4anVyKHxQo2j4llxBBob8r8p6NQMP5Ptb8DZzHU/PuKlN 4QtdCEcpyYMri5tITGKjNlWSmypQXK5BWB1WcHsQ= 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 5.4 171/475] mt76: mt7615: check sta_rates pointer in mt7615_sta_rate_tbl_update Date: Thu, 14 Apr 2022 15:09:16 +0200 Message-Id: <20220414110859.922402697@linuxfoundation.org> X-Mailer: git-send-email 2.35.2 In-Reply-To: <20220414110855.141582785@linuxfoundation.org> References: <20220414110855.141582785@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 38183aef0eb9..5ad8b0afa41f 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c @@ -385,6 +385,9 @@ 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