From mboxrd@z Thu Jan 1 00:00:00 1970 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=-3.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 57CB0C35242 for ; Sat, 8 Feb 2020 18:29:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3C11322464 for ; Sat, 8 Feb 2020 18:29:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727691AbgBHS3g (ORCPT ); Sat, 8 Feb 2020 13:29:36 -0500 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:33450 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727465AbgBHS3d (ORCPT ); Sat, 8 Feb 2020 13:29:33 -0500 Received: from [192.168.4.242] (helo=deadeye) by shadbolt.decadent.org.uk with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1j0UrC-0003a5-Pw; Sat, 08 Feb 2020 18:29:30 +0000 Received: from ben by deadeye with local (Exim 4.93) (envelope-from ) id 1j0UrB-000CJA-Jd; Sat, 08 Feb 2020 18:29:29 +0000 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, Denis Kirjanov , "David S. Miller" , "John W. Linville" , "Denis Efremov" , "Kalle Valo" , "Rajkumar Manoharan" Date: Sat, 08 Feb 2020 18:19:09 +0000 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) X-Patchwork-Hint: ignore Subject: [PATCH 3.16 010/148] ath9k_hw: fix uninitialized variable data In-Reply-To: X-SA-Exim-Connect-IP: 192.168.4.242 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.16.82-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Denis Efremov commit 80e84f36412e0c5172447b6947068dca0d04ee82 upstream. Currently, data variable in ar9003_hw_thermo_cal_apply() could be uninitialized if ar9300_otp_read_word() will fail to read the value. Initialize data variable with 0 to prevent an undefined behavior. This will be enough to handle error case when ar9300_otp_read_word() fails. Fixes: 80fe43f2bbd5 ("ath9k_hw: Read and configure thermocal for AR9462") Cc: Rajkumar Manoharan Cc: John W. Linville Cc: Kalle Valo Cc: "David S. Miller" Signed-off-by: Denis Efremov Signed-off-by: Kalle Valo Signed-off-by: Ben Hutchings --- drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c @@ -4107,7 +4107,7 @@ static void ar9003_hw_thermometer_apply( static void ar9003_hw_thermo_cal_apply(struct ath_hw *ah) { - u32 data, ko, kg; + u32 data = 0, ko, kg; if (!AR_SREV_9462_20_OR_LATER(ah)) return;