From patchwork Sat Jan 22 14:58:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 534263 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 569A2C433F5 for ; Sat, 22 Jan 2022 14:59:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233880AbiAVO7U (ORCPT ); Sat, 22 Jan 2022 09:59:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58352 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231322AbiAVO7P (ORCPT ); Sat, 22 Jan 2022 09:59:15 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2025CC06173B for ; Sat, 22 Jan 2022 06:59:15 -0800 (PST) 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 A00C260DCB for ; Sat, 22 Jan 2022 14:59:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 01565C004E1; Sat, 22 Jan 2022 14:59:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642863554; bh=xRQiJJFG76hnTUsM/sn8k0gKg0XbKbeYVC2ttH9gU1E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gA7YPWQZrqV3ie8opCw/rlG3Q5viVHssgK+rJmcqQvN1zoKSFVXNvARTKqU+ZnK3Y P3FFhi3Iv/ncITZd88x4LvtyML8RYpuzXZT3R1f0BX7peHC+9RdJ+RX40b10oDyN4N qjmfk1vlGBT0Vji3OtOBbPiE+iyffxiylRgGizXdXSLPzFJXLbFZa7XSZ4a0lfCF0D UMdgqWjHsiPi05p+fko9QK24tEN99RpILHYzkybwgogqgNxeSpun3WmDd+PhUXlGJz sviyYwSvCuBo/T+qwTpAsnVa6TAFBnd9QHjImQxIkzTUjykOecv5UThMWLRInb8j0e 9Kw6h2K4Wwvyg== From: Lorenzo Bianconi To: nbd@nbd.name Cc: lorenzo.bianconi@redhat.com, linux-wireless@vger.kernel.org, ryder.lee@mediatek.com Subject: [PATCH 2/2] mt76: mt7615: check sta_rates pointer in mt7615_sta_rate_tbl_update Date: Sat, 22 Jan 2022 15:58:58 +0100 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org 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 --- 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 9f7ac78f1222..fca38f0e1a27 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c @@ -689,6 +689,9 @@ 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;