From patchwork Mon Aug 17 15:13:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 265981 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1C075C433E1 for ; Mon, 17 Aug 2020 19:33:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EAB5B2065D for ; Mon, 17 Aug 2020 19:33:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597692795; bh=qGB1eCeXyQTCRvPGHcsCiktvK5rer3VZ0aHNYF40RSA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=PK+cbueGeZNPkYfwWFgsckzgZcGIXxYNWv3AbSImgB3w11b7667xT5sQ2eMhfqCpS DUJDFQIl3X1zJrWF9F1pPqr6nJVpCPFIfJgcvRfk4OEuiCkdHN1+7XWzq6dB0tAZUe MaKYoPk9iIr1aABb23CiPmz/jdm9GKK3ez2w+gso= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729847AbgHQPbD (ORCPT ); Mon, 17 Aug 2020 11:31:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:53920 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730250AbgHQPa7 (ORCPT ); Mon, 17 Aug 2020 11:30:59 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E066823BCF; Mon, 17 Aug 2020 15:30:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597678259; bh=qGB1eCeXyQTCRvPGHcsCiktvK5rer3VZ0aHNYF40RSA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WVKpGAUDCbVwW8xrzhY3KPQQQlEyacHAE3jzGqx6TrqvuYI+lU5OIsbYMCpnJYm3a KpMcOgQZBOd2Kyi3vzK1l6SoRjdko00MUzrN7XHx5AU8DhSlqtdxVzlMke5K80HTry Vazas99ohUS0UY9WwPESVwnTD4ZjhIoxLuSiwLrw= 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 5.8 272/464] mt76: mt7615: fix possible memory leak in mt7615_mcu_wtbl_sta_add Date: Mon, 17 Aug 2020 17:13:45 +0200 Message-Id: <20200817143846.810934762@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143833.737102804@linuxfoundation.org> References: <20200817143833.737102804@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Lorenzo Bianconi [ Upstream commit 2bccc8415883c1cd5ae8836548d9783dbbd84999 ] Free the second mcu skb if __mt76_mcu_skb_send_msg() fails to transmit the first one in mt7615_mcu_wtbl_sta_add(). Fixes: 99c457d902cf9 ("mt76: mt7615: move mt7615_mcu_set_bmc to mt7615_mcu_ops") Signed-off-by: Lorenzo Bianconi Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin --- drivers/net/wireless/mediatek/mt76/mt7615/mcu.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c index d8c52ffcf0ecb..cb8c1d80ead92 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c @@ -1209,8 +1209,12 @@ mt7615_mcu_wtbl_sta_add(struct mt7615_dev *dev, struct ieee80211_vif *vif, skb = enable ? wskb : sskb; err = __mt76_mcu_skb_send_msg(&dev->mt76, skb, cmd, true); - if (err < 0) + if (err < 0) { + skb = enable ? sskb : wskb; + dev_kfree_skb(skb); + return err; + } cmd = enable ? MCU_EXT_CMD_STA_REC_UPDATE : MCU_EXT_CMD_WTBL_UPDATE; skb = enable ? sskb : wskb;