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Mon, 29 Jun 2020 20:37:57 -0800 Received: from mtkmbs08n2.mediatek.inc (172.21.101.56) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 29 Jun 2020 21:37:56 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs08n2.mediatek.inc (172.21.101.56) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 30 Jun 2020 12:37:54 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 30 Jun 2020 12:37:56 +0800 From: To: , Subject: [PATCH 2/3] mt76: mt7663u: fix potential memory leak in mcu message handler Date: Tue, 30 Jun 2020 12:37:50 +0800 Message-ID: <74f27a79f53c6df3c49484a27c5b954d827cd9a5.1593491298.git.sean.wang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <5e8786d9cf0ccd09dd9c13c24c48ce441afbf0ff.1593491298.git.sean.wang@mediatek.com> References: <5e8786d9cf0ccd09dd9c13c24c48ce441afbf0ff.1593491298.git.sean.wang@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 9F3B80C1C9581102FA6D476316E8008941CD87F125D212641B645BD95A92D3E62000:8 X-MTK: N X-Spam-Note: CRM114 invocation failed X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mediatek@lists.infradead.org, sean.wang@mediatek.com, linux-wireless@vger.kernel.org, ryder.lee@mediatek.com Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org From: Sean Wang Fix potential memory leak in mcu message handler on error condition. Fixes: eb99cc95c3b6 ("mt76: mt7615: introduce mt7663u support") Signed-off-by: Sean Wang Acked-by: Lorenzo Bianconi --- drivers/net/wireless/mediatek/mt76/mt7615/usb_mcu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/usb_mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/usb_mcu.c index cd709fd617db..3e66ff98cab8 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/usb_mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/usb_mcu.c @@ -34,7 +34,6 @@ mt7663u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb, ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL, 1000, ep); - dev_kfree_skb(skb); if (ret < 0) goto out; @@ -43,6 +42,7 @@ mt7663u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb, out: mutex_unlock(&mdev->mcu.mutex); + dev_kfree_skb(skb); return ret; }