From patchwork Thu May 20 09:20:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 444431 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 3033CC433B4 for ; Thu, 20 May 2021 10:02:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0376A6191A for ; Thu, 20 May 2021 10:02:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234992AbhETKDy (ORCPT ); Thu, 20 May 2021 06:03:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:37248 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235047AbhETKBx (ORCPT ); Thu, 20 May 2021 06:01:53 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E363661421; Thu, 20 May 2021 09:39:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621503577; bh=w6JjWfvx0/KxablD9QkYLIjUpPO76ZMO4tRBlwAJeuE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hfK9wu3IzD4K+DynlfiNuEzVA073a1oguXXsrMSxLPLDGYDLaPcf4ThNaqLhAtd7i YrInKZPtToVQo/AgqmXckMVuIP2mL3Ryd4tQOH+7+aOaas9xJYWfcriagkpIfnq/OF ODzBsEYNryXiQ5V6xFGsaBiBL4NpxK9+ud20Uwz8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Pavel Machek , Shuah Khan , Kalle Valo , Sasha Levin Subject: [PATCH 4.19 283/425] ath10k: Fix ath10k_wmi_tlv_op_pull_peer_stats_info() unlock without lock Date: Thu, 20 May 2021 11:20:52 +0200 Message-Id: <20210520092140.746525449@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210520092131.308959589@linuxfoundation.org> References: <20210520092131.308959589@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Shuah Khan [ Upstream commit eaaf52e4b866f265eb791897d622961293fd48c1 ] ath10k_wmi_tlv_op_pull_peer_stats_info() could try to unlock RCU lock winthout locking it first when peer reason doesn't match the valid cases for this function. Add a default case to return without unlocking. Fixes: 09078368d516 ("ath10k: hold RCU lock when calling ieee80211_find_sta_by_ifaddr()") Reported-by: Pavel Machek Signed-off-by: Shuah Khan Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20210406230228.31301-1-skhan@linuxfoundation.org Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath10k/wmi-tlv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c index 04dc5714aa72..243887fdb343 100644 --- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c +++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c @@ -465,6 +465,9 @@ static void ath10k_wmi_event_tdls_peer(struct ath10k *ar, struct sk_buff *skb) GFP_ATOMIC ); break; + default: + kfree(tb); + return; } exit: