From patchwork Sat Dec 3 21:33:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryder Lee X-Patchwork-Id: 13063650 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 10DE9C4332F for ; Sat, 3 Dec 2022 21:34:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:CC:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=By8Hs0ILcc6/2bwMt7Sag9YleAroulw6Wer7whCyctY=; b=YQLBoMidXrCpOcPDLiqXf4Cvlq gctm1dHs3lDK+Igy8DVDogXq/C/zm0YIBlIRa56YpzpSMWfzRk/R88RbdAd9FoayIeUJQF1pgkvGq +ZSad8ItiZFoZwIZdB7aZA+SliTZzPoLiFnK4xszVzXw9rJ/MO7rnooLvXFQIrmfiPVX3kxkx+RT4 +ObUKMVy5fyYX/IBD4JFCGsZYcW4Xl4ac1qyMiD8G3TY43FvLU5DMqDqAAUtM7zcA+ucBFxzeCa+f TCnZHHu3jjxDxOTna5tVunNa+XZolp/ee2pytMMRbU4PBVOxVCL9ApS+k6hzU/c0nqRaAubW4Cz9C GIhdotCw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p1a9A-005MjX-F2; Sat, 03 Dec 2022 21:34:08 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p1a96-005MdR-J5 for linux-mediatek@lists.infradead.org; Sat, 03 Dec 2022 21:34:07 +0000 X-UUID: 1b92037fc37e40b08813e7e472c28474-20221203 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=By8Hs0ILcc6/2bwMt7Sag9YleAroulw6Wer7whCyctY=; b=hGhJ2Ue7VCRoeuApY7eXc0E2yqXQtqjLfmMNgIlb9XkgWqgoc/YKkGFToSYlxZ+XFI9hB2TuGaknL067uPcS3OI2ignrxcweAbSeHPXqlUzX1d/cKGADLApJbmdW81fN+AyJISjQE8BDZqr6BpCaiKOhjxCRXSoRjf7uFQKjTmE=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.14,REQID:9bdc839c-aa20-4c5e-aba1-c18e903bfc80,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:dcaaed0,CLOUDID:d5da766c-41fe-47b6-8eb4-ec192dedaf7d,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: 1b92037fc37e40b08813e7e472c28474-20221203 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 977816850; Sat, 03 Dec 2022 14:33:54 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Sun, 4 Dec 2022 05:33:21 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Sun, 4 Dec 2022 05:33:21 +0800 From: Ryder Lee To: Felix Fietkau , CC: Lorenzo Bianconi , Shayne Chen , Evelyn Tsai , , Ryder Lee Subject: [PATCH v2 3/3] wifi: mt76: mt7915: check the correctness of event data Date: Sun, 4 Dec 2022 05:33:19 +0800 Message-ID: <4872e6fb6ca30b62a45d45a46c623a413acfaae2.1670102099.git.ryder.lee@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <3fec8b8c618a78d1197f4060f89fa8bdd836b425.1670102099.git.ryder.lee@mediatek.com> References: <3fec8b8c618a78d1197f4060f89fa8bdd836b425.1670102099.git.ryder.lee@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221203_133404_680756_6E083665 X-CRM114-Status: GOOD ( 10.17 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org The mcu event might not be reliable, so check the correctness of data before handling it. Signed-off-by: Ryder Lee --- .../net/wireless/mediatek/mt76/mt7915/mcu.c | 21 +++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c index 86ec767266cc..37a3c1f082d9 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c @@ -232,8 +232,11 @@ mt7915_mcu_rx_csa_notify(struct mt7915_dev *dev, struct sk_buff *skb) c = (struct mt7915_mcu_csa_notify *)skb->data; + if (c->band_idx > MT_BAND1) + return; + if ((c->band_idx && !dev->phy.mt76->band_idx) && - dev->mt76.phys[MT_BAND1]) + dev->mt76.phys[MT_BAND1]) mphy = dev->mt76.phys[MT_BAND1]; ieee80211_iterate_active_interfaces_atomic(mphy->hw, @@ -252,8 +255,11 @@ mt7915_mcu_rx_thermal_notify(struct mt7915_dev *dev, struct sk_buff *skb) if (t->ctrl.ctrl_id != THERMAL_PROTECT_ENABLE) return; + if (t->ctrl.band_idx > MT_BAND1) + return; + if ((t->ctrl.band_idx && !dev->phy.mt76->band_idx) && - dev->mt76.phys[MT_BAND1]) + dev->mt76.phys[MT_BAND1]) mphy = dev->mt76.phys[MT_BAND1]; phy = (struct mt7915_phy *)mphy->priv; @@ -268,8 +274,11 @@ mt7915_mcu_rx_radar_detected(struct mt7915_dev *dev, struct sk_buff *skb) r = (struct mt7915_mcu_rdd_report *)skb->data; + if (r->band_idx > MT_BAND1) + return; + if ((r->band_idx && !dev->phy.mt76->band_idx) && - dev->mt76.phys[MT_BAND1]) + dev->mt76.phys[MT_BAND1]) mphy = dev->mt76.phys[MT_BAND1]; if (r->band_idx == MT_RX_SEL2) @@ -326,7 +335,11 @@ mt7915_mcu_rx_bcc_notify(struct mt7915_dev *dev, struct sk_buff *skb) b = (struct mt7915_mcu_bcc_notify *)skb->data; - if ((b->band_idx && !dev->phy.mt76->band_idx) && dev->mt76.phys[MT_BAND1]) + if (b->band_idx > MT_BAND1) + return; + + if ((b->band_idx && !dev->phy.mt76->band_idx) && + dev->mt76.phys[MT_BAND1]) mphy = dev->mt76.phys[MT_BAND1]; ieee80211_iterate_active_interfaces_atomic(mphy->hw,