From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3968184-1523242917-2-12673641990076967902 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, MAILING_LIST_MULTI -1, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES encaro, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='com', MailFrom='org', XOriginatingCountry='US' X-Spam-charsets: plain='iso-8859-1' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=fm2; t= 1523242916; b=JZZEyzAyZrE2k4LLxsjWkhq5xGS6Y15bIDjw7hhdQZ6IufDDH3 bOZ14uqA4XIqgORtG8zGSHwVUeebdSy1Tn8JN7i833hCYX5hWk7pW1KuSTXBM0lV Kk9mlbQh9iUrO3ZbNAEq7Z2fmF+SI+kkagq6bW/KwghYoNYcjfVm8tg066x28b4f 8AYiZn0gYLDFifwLFZORArpwE7CU/Caki5IEvyMGgI6SZCSH9f7JefjvPTl7gHBm Ef0PNOmz1r3SlXWDKH+XVGs+NPIuIvR+anIxNO6v3yBDHOAyBySX5EPYmoDr3AtD 5cM67+GedIoC7g5UKcTxNt3bw3BqbJiOwKIw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :references:in-reply-to:content-type:content-transfer-encoding :mime-version:sender:list-id; s=fm2; t=1523242916; bh=kEbeKIWgUC GqWIDBLL4m+5ADVnQGu8x9ekPXTk31yvc=; b=PNjNU8BVbm39b3yVDqJQLyyQRW UZz1RZCFsEn3ilP0mLH+QhSnwDa0nxzjOuJEVXMcCPHy31r4awF1w+ldjhPJ3EyR cbeyD37/z1h6UaxXYcXj1EVLmjvp80LyveRkxbx1R8h+CgrNqXjaohEkBzrq8KNL CyjHCdDMc2jcLBKU9Qr2ycy69WFfdBzpHxabIqeP7uzPs7vjUYPs2jR0GfoUvSr+ 7PpHB4rVakCpuKo7Y85e59Z+n7MqaJFlCQIFHAi5qjHbLR5eURxOzxttUxBKOqSW KINDWxKmwWtpZCoxYyOqQqcfiIxMo2abhHZzmu3K+N8hmgGNT5iqLSOjMKow== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=microsoft.com header.i=@microsoft.com header.b=XT5IqOoT x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=selector1; dmarc=pass (p=reject,has-list-id=yes,d=none) header.from=microsoft.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=microsoft.com header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=microsoft.com header.i=@microsoft.com header.b=XT5IqOoT x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=selector1; dmarc=pass (p=reject,has-list-id=yes,d=none) header.from=microsoft.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=microsoft.com header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfEkFGYDiUrGFfOALG3UQxZSrUJrzuUMA4uYptWlUJ9V5no2AUXwBgC8Jj647MQd421oXyIgjXQxWq0Swhdl3mkLIgUVGp1cc7pMJ6Inc0ZevlIThIdSM XBp5idkbRTUoikbZFYC7Q+PyB521e84Ohd26anrn/LG2ECNeZ0WUGksGqrFiGR8VXQRAlgv93x5H+rt1TPve0xuxGF3BUgjg5lQckBQP7a5uEGyfAe063KzW X-CM-Analysis: v=2.3 cv=WaUilXpX c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=wRwT6uffUbIA:10 a=t_PdEiP4ckcA:10 a=mw6kJ3eo-EIA:10 a=8nJEP1OIZ-IA:10 a=xqWC_Br6kY4A:10 a=Kd1tUaAdevIA:10 a=Lf-vpJhqX20A:10 a=QyXUC8HyAAAA:8 a=KKAkSRfTAAAA:8 a=JfrnYn6hAAAA:8 a=VwQbUJbxAAAA:8 a=20KFwNOVAAAA:8 a=yMhMjlubAAAA:8 a=9IefVlp6ptrRNx8ANt4A:9 a=wPNLvfGTeEIA:10 a=cvBusfyB2V15izCimMoJ:22 a=1CNFftbPRP8L7MoqJWF3:22 a=AjGcO6oz07-iQ99wixmX:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751946AbeDIDBa (ORCPT ); Sun, 8 Apr 2018 23:01:30 -0400 Received: from mail-bn3nam01on0139.outbound.protection.outlook.com ([104.47.33.139]:17920 "EHLO NAM01-BN3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755157AbeDIAZ3 (ORCPT ); Sun, 8 Apr 2018 20:25:29 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Arnd Bergmann , Thomas Gleixner , Andi Kleen , Nicolas Pitre , Peter Zijlstra , Dave Hansen , Andy Lutomirski , Josh Poimboeuf , Borislav Petkov , Vlastimil Babka , Sasha Levin Subject: [PATCH AUTOSEL for 4.14 117/161] x86/dumpstack: Avoid uninitlized variable Thread-Topic: [PATCH AUTOSEL for 4.14 117/161] x86/dumpstack: Avoid uninitlized variable Thread-Index: AQHTz5i0PincUFwi3Eis8GBTAiv9fg== Date: Mon, 9 Apr 2018 00:21:29 +0000 Message-ID: <20180409001936.162706-117-alexander.levin@microsoft.com> References: <20180409001936.162706-1-alexander.levin@microsoft.com> In-Reply-To: <20180409001936.162706-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB1013;7:cSyCAVsjyMkJPm+OTXwAlYPxpIEC6OKZv4B0BaX2qd4B4ElAnEoqBKBUGYSYn7bfzpikKKe/7hhat7S5StOC6czIinfZjxHvYobPy2390yzZy0IaBr84hkhs8Y2457xQYaqJ/23rgl6Sq8UaoWpICwrCd6HScXlO1xJMTpHNbFpKDX0WiYymz3twJaT6JrU7w042iycP/uG/KMcFLC0t1GlL3oMIB840HgxC7gNa+lp+fKVvZNN9JZ/GdkMkX++E;20:3gI0xPhgFc/o20ejoRdW1OwgcuvMyo1QWwOQqH0ulRmKgWs5MmCR6j7naiO4W8PCyux6JvKaJI9YaHR73frgyDCpioGDkLFLHqrZZdT71dtUsfLdL6jVrRMQhCdqVFsLQlm+KZXCqF8dPqEi+lcdNW0NlJ+gNiWij5maf3NNE3o= X-MS-Office365-Filtering-Correlation-Id: eea326c2-7991-466c-2a60-08d59db0625f x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(4534165)(4627221)(201703031133081)(201702281549075)(5600026)(4604075)(3008032)(48565401081)(2017052603328)(7193020);SRVR:DM5PR2101MB1013; x-ms-traffictypediagnostic: DM5PR2101MB1013: authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(28532068793085)(89211679590171)(42068640409301)(228905959029699); x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(61425038)(6040522)(2401047)(8121501046)(5005006)(3231221)(944501327)(52105095)(3002001)(93006095)(93001095)(10201501046)(6055026)(61426038)(61427038)(6041310)(20161123560045)(20161123564045)(20161123558120)(20161123562045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(6072148)(201708071742011);SRVR:DM5PR2101MB1013;BCL:0;PCL:0;RULEID:;SRVR:DM5PR2101MB1013; x-forefront-prvs: 0637FCE711 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(346002)(366004)(376002)(396003)(39860400002)(39380400002)(189003)(199004)(3280700002)(2616005)(8936002)(7736002)(476003)(446003)(11346002)(53936002)(3660700001)(86362001)(575784001)(86612001)(81156014)(2906002)(186003)(81166006)(105586002)(1076002)(8676002)(26005)(97736004)(25786009)(6306002)(6512007)(3846002)(68736007)(72206003)(106356001)(5660300001)(6486002)(6116002)(966005)(14454004)(4326008)(305945005)(6436002)(2501003)(5250100002)(10290500003)(478600001)(2900100001)(59450400001)(22452003)(110136005)(316002)(7416002)(99286004)(66066001)(10090500001)(107886003)(76176011)(102836004)(54906003)(6506007)(36756003)(486006)(22906009)(217873001);DIR:OUT;SFP:1102;SCL:1;SRVR:DM5PR2101MB1013;H:DM5PR2101MB1032.namprd21.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; x-microsoft-antispam-message-info: eENKkQZ07lkAiKnQLbJt4bUfHgLKJW8Xs3GpS875dCWBT94whU9p0peVbMZBtWzMpqCqPO/0X30lDAHRIxmKCaEkZSZkv+b9x5GyqSItk76wNjFIiWBUekJXJga1Y2T/Qzjcb35Ee/SfhblmpG8o5ltpn48H0N2hLjF26at+0ij1D5Fv6HIcUKOnzMhgAgRuowKo3+D5YUvhL9dj0W3+laBSmrtSPMzjqKL0JCfVjcdsr5+TeA28EjLgImJh372r9Qgrm7XKJe/lVnq9nQVds9TH9o4T2LjdYBPoSL9qVBHidx7Fpy0TPy92rjl4N9mRowmBtcjuWrnqJvCTGtgzcBHOoiUeqQyU3HhNZ7rSJmjHXkKwobMyYozsTjH7QdG5bKLJkYwvuxKoMvFkKZMEjSwdTTU8XNmM5M38vh5ox78= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: eea326c2-7991-466c-2a60-08d59db0625f X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2018 00:21:29.3468 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1013 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Arnd Bergmann [ Upstream commit ebfc15019cfa72496c674ffcb0b8ef10790dcddc ] In some configurations, 'partial' does not get initialized, as shown by this gcc-8 warning: arch/x86/kernel/dumpstack.c: In function 'show_trace_log_lvl': arch/x86/kernel/dumpstack.c:156:4: error: 'partial' may be used uninitializ= ed in this function [-Werror=3Dmaybe-uninitialized] show_regs_if_on_stack(&stack_info, regs, partial); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This initializes it to false, to get the previous behavior in this case. Fixes: a9cdbe72c4e8 ("x86/dumpstack: Fix partial register dumps") Signed-off-by: Arnd Bergmann Signed-off-by: Thomas Gleixner Cc: Andi Kleen Cc: Nicolas Pitre Cc: Peter Zijlstra Cc: Dave Hansen Cc: Andy Lutomirski Cc: Josh Poimboeuf Cc: Borislav Petkov Cc: Vlastimil Babka Link: https://lkml.kernel.org/r/20180202145634.200291-1-arnd@arndb.de Signed-off-by: Sasha Levin --- arch/x86/kernel/dumpstack.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c index afbecff161d1..a2d8a3908670 100644 --- a/arch/x86/kernel/dumpstack.c +++ b/arch/x86/kernel/dumpstack.c @@ -109,7 +109,7 @@ void show_trace_log_lvl(struct task_struct *task, struc= t pt_regs *regs, struct stack_info stack_info =3D {0}; unsigned long visit_mask =3D 0; int graph_idx =3D 0; - bool partial; + bool partial =3D false; =20 printk("%sCall Trace:\n", log_lvl); =20 --=20 2.15.1