From patchwork Sat Jan 22 14:58:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 534462 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 6AD08C433FE for ; Sat, 22 Jan 2022 14:59:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233689AbiAVO7Q (ORCPT ); Sat, 22 Jan 2022 09:59:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58354 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233647AbiAVO7P (ORCPT ); Sat, 22 Jan 2022 09:59:15 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 25FE0C06173D 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 ams.source.kernel.org (Postfix) with ESMTPS id C3328B801C1 for ; Sat, 22 Jan 2022 14:59:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 71422C340E4; Sat, 22 Jan 2022 14:59:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642863552; bh=b98vHUG1Ig12yhmR/tvv+3Bm1JhY7JuxW2Clf5W09l4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aXLFEPPXMrKA4iXfS+SUZxrWx3wSWq1vb01gqDLcbwyqI/8lktrQx5IIx4svyI7AF EQLxwv0vqIYZtcNuHyOT+Ao5UeZ9vgpj6f2/fG0qGvo4G0OOA/lkI3ixnlKojdR2Ss yRPYK7j92HWRpOaXptz75+dFoY4+nd9S51lSqy5gJykC/zjC1wsmI7skjligGFK4w+ iWwIFHGNI3PePpMsH/15HJIYhpTeZtgkf1/aeQlrLUqOY0PAfo5mJf5qlGtGDAIcxA 3oCKc20Bemo22VX+8Y2hKAJRAASe7AHGiaTNzeiZ5mEhf8u/ExonSfq/RpG52BmyNC o9jE3DjFnSLEg== From: Lorenzo Bianconi To: nbd@nbd.name Cc: lorenzo.bianconi@redhat.com, linux-wireless@vger.kernel.org, ryder.lee@mediatek.com Subject: [PATCH 1/2] mt76: mt7603: check sta_rates pointer in mt7603_sta_rate_tbl_update Date: Sat, 22 Jan 2022 15:58:57 +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 mt7603_sta_rate_tbl_update routine since minstrel_ht_update_rates can fail allocating rates array. Fixes: c8846e1015022 ("mt76: add driver for MT7603E and MT7628/7688") Signed-off-by: Lorenzo Bianconi --- drivers/net/wireless/mediatek/mt76/mt7603/main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/main.c b/drivers/net/wireless/mediatek/mt76/mt7603/main.c index 2b546bc05d82..83c5eec5b163 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7603/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7603/main.c @@ -641,6 +641,9 @@ mt7603_sta_rate_tbl_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 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;