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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 10516C433B4 for ; Sat, 15 May 2021 02:30:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C65436144B for ; Sat, 15 May 2021 02:30:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233748AbhEOCbs (ORCPT ); Fri, 14 May 2021 22:31:48 -0400 Received: from mail-dm6nam10on2053.outbound.protection.outlook.com ([40.107.93.53]:61761 "EHLO NAM10-DM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S235657AbhEOCbp (ORCPT ); Fri, 14 May 2021 22:31:45 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=OfO3jizKEyfcSo9Kz/kIPxS0RwX+Vukx9aCka98lBK2pSfUGawEX9aw4pvTyEqvo1+ZEr1iSIlqK0qUXkxMzxtD6o6X0CAScr5l85AE/16UTNs136RiI4kMrGO2FycONCuIKNmjkrWv9jo8lsjJtakzZB/JWt6YAOnzm930FVnfzU0DxIijOBJyycyMVEEi2NkmmohroGKvUfDKm2U1JnO8QgfSPW2B8ryB4MVYaL8YXPR2MK5zaluORjR6fkGv6xlYtqnLz8ndoo5JRW+KLIU8h9DoBn+ut49WIrCNieoYcMOVSJaVHPJD/XItsWGYdPs8JCLqhyj3AJR406YQVdQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Fcr/Ahta7KyXR8hYkz0v5fZrI472D2A+teU+2jRvpe4=; b=i9hHaznymn3PSBVaK/bApFW4oN8xkS6v4LdN5XiqUS4BiS1gM3bA/dCdJOwGxrRDr4PQb2gLrSMxY+dfpO2Ha4wbKNWj53FfHSK2dv83Z6FWYDvE+yyTs/NwDNovMLU57dyRnW2NqJCPi0d81WCe/vXrc2cw4+YW64J8I7dPubazH37WtRLhan6TOP3ZFZqO01Yu+FDl5A0irCJRwGDsWEpGV7x+vwsllQqpQf0Ac6aGFkaD4b9BSaXB6D+/PN2msdseeHiFpo2kbA5Sx91eNIj1xK+dW5uEoEdsvBnGEiu0XYvGE8awwPwbHnICRmm7/dmazIkO8eMaZ3IQFpUsHQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=windriver.com; dmarc=pass action=none header.from=windriver.com; dkim=pass header.d=windriver.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=windriversystems.onmicrosoft.com; s=selector2-windriversystems-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Fcr/Ahta7KyXR8hYkz0v5fZrI472D2A+teU+2jRvpe4=; b=iiru79qewDo/FAhk7pJrCdPtyf5x3ROp0m39TcequpKbGuOSf1kXMy+9SI/boC3v/tT8oquSsOJogVVGsmVYCfim2EhBAOBUsnJ/bN75+FAM5Nh3MDvDqMAgJz6HkbgMiHUNcX2D8FjljGae69QMg4XLA9LH8Xtszw9tEQ+GD4M= Authentication-Results: infradead.org; dkim=none (message not signed) header.d=none;infradead.org; dmarc=none action=none header.from=windriver.com; Received: from DM6PR11MB4202.namprd11.prod.outlook.com (2603:10b6:5:1df::16) by DM6PR11MB3420.namprd11.prod.outlook.com (2603:10b6:5:69::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4129.28; Sat, 15 May 2021 02:30:32 +0000 Received: from DM6PR11MB4202.namprd11.prod.outlook.com ([fe80::60c5:cd78:8edd:d274]) by DM6PR11MB4202.namprd11.prod.outlook.com ([fe80::60c5:cd78:8edd:d274%5]) with mapi id 15.20.4129.028; Sat, 15 May 2021 02:30:31 +0000 From: qiang.zhang@windriver.com To: peterz@infradead.org, mingo@redhat.com, will@kernel.org, longman@redhat.com, boqun.feng@gmail.com Cc: linux-kernel@vger.kernel.org Subject: [PATCH] locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal Date: Sat, 15 May 2021 10:30:10 +0800 Message-Id: <20210515023010.102985-1-qiang.zhang@windriver.com> X-Mailer: git-send-email 2.25.1 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [240e:304:8181:8460:98c0:7881:2aa3:e507] X-ClientProxiedBy: HK0PR03CA0099.apcprd03.prod.outlook.com (2603:1096:203:b0::15) To DM6PR11MB4202.namprd11.prod.outlook.com (2603:10b6:5:1df::16) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (240e:304:8181:8460:98c0:7881:2aa3:e507) by HK0PR03CA0099.apcprd03.prod.outlook.com (2603:1096:203:b0::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4108.25 via Frontend Transport; Sat, 15 May 2021 02:30:27 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: e033bf61-5022-4f09-d322-08d91749691c X-MS-TrafficTypeDiagnostic: DM6PR11MB3420: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:33; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: ZGBrZCclrFdxxqvx1zAxeKiIDIP9d4Mm5GWoiNGR1dKEINtZ14pPY55h9Dgq3xbPuCbnSTBOlsoJC3kZOffMJyxta29rUwJFV2vhFAZA26DgUNnwws7hNLLYDkoTApdieyZMcjzO/Cr35msnDFGlMF8Vg3V08VnEvdTDgMZUzJDpGOOJ9LLQ231tF4rDzZ88y1QLlpWBC/iN+r357a34CnLt5baV2oxdIj34eTpgZJH1xM196YukMqE7MfX5sRJeDwr2bbf1gho06n66PJCR0SU66LK/6V2AjJyc9hnaKDV7IaN/QIHSv1kTnkYJJ501P/4J6WZiXEVi/kKAkyKX/PLNiekk6ScUtHkqDUHGZd662Xoqyt6zy+Bs2blu4iH78YHcJQqS547YGnPbdJSwDwigpKvP47B4mh0fW4IUzjDgAG7eQbEB41Hxzlw2JZdiCqgCWK8+MOSbZlr17iDev0qrG3bd3P+EgYZtIOONIV8cy0O1POt8e4iF4A0vIyD8UGE54ySmP4fzlq3mlI0w0P/vr/OVGNasobtShmIzPoTm8OFd8515ewiAZi8iCs6PpyxzNAxpGcOl/Ug2DEkzIIgUEX0di2BF6ctvni3DGZsWFo7+jW4p/7iNlO0pHKu6bUyR9gKyNWrc13fPGzC1DQ== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM6PR11MB4202.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(376002)(136003)(396003)(39840400004)(346002)(366004)(4744005)(186003)(16526019)(4326008)(1076003)(316002)(2616005)(2906002)(478600001)(6486002)(6506007)(66946007)(5660300002)(66476007)(66556008)(8936002)(6666004)(8676002)(36756003)(6512007)(9686003)(83380400001)(38100700002)(86362001)(52116002)(69590400013);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?FTSnB6ylv0vRNL/sYfXw5M9nStcGeHDg6E6CG/SapnQ7QkxdbR+j+VXNx3Ho?= =?us-ascii?Q?O4+zt0XlYN34/K0y7c/OdKdcR/aV7G7p8rkAiSyuGHT2OwZVkvvFYRWw4VXF?= =?us-ascii?Q?mB4uIhd0wMfg4O6hs/TT1PBUdawwBFPAfriS5iMOOeVNMIDMVaepYvT0F+Mw?= =?us-ascii?Q?aqW4KzqG9QVpqM9zvGEN9TeK0BiNJSMB9S9Zgni916SBfKBMOVackNlAs0Ws?= =?us-ascii?Q?/AQkr4plsXCKB9pyuhbzOVrVbvIKpSTmsVU+AQWrUlQuiJRfpSSs8etrLIYQ?= =?us-ascii?Q?5Mt1rLSvBRARSdcOpgx0/KqNqjWw/cO3K/dfcOGhzR/JbxGGfVMUs6S5Ozba?= =?us-ascii?Q?PhDqo7jKag7iNEXMpcwAQTI3GBZpq6OosWoTY1AsabNCqnJmNNtmzrfEDN3z?= =?us-ascii?Q?03AreBbkgJ8EeKZRI0LSzow+mz/mXSlE80h5B5iSbUuXIf0gMsMouOpSqyMn?= =?us-ascii?Q?VF4kzhF1T4JQq+h6rIQcFcIa6PTN4jYLSWCEhhaPQXGuI/3VxCzTxLn4rIAC?= =?us-ascii?Q?q0icd+pab4ilUe8RJbLgIpEl0+YdMSS10+YsLGxX+ZhzDBYviAIjk54UpHF+?= =?us-ascii?Q?IBRD8I4XQhcw1BqjLIgKBvQ2LgJLD0ubM87bzcLPGobzmExx0doSSurgiBQn?= =?us-ascii?Q?Hlqwc5xOzJa806txvkUtGErYZzjQtz34RLhMjB1EyjhtdYe52t9ki3xQQD/u?= =?us-ascii?Q?czpQyHnUu1Szp8lN2N//e/0sK6my9/GPlMvr6JfHHiduCLA+Hy/WQztIG0bm?= =?us-ascii?Q?HRos1DeDF8HWRtU/hdgTuqTHR1fDgV4EMSp8KFYfls0WDZgMSyD1hbg+mcs+?= =?us-ascii?Q?9yNVqmbcPwYxmtJVVqNj5xdyK/zTQbY8HzPGA42gc3ieEe2194CYNbpEEUfF?= =?us-ascii?Q?fWHZB+Ogm1u+WdEDU8xOKfaqWQb6apUVA9H9fJBj/gc7nBe/vExdmzGrN5sM?= =?us-ascii?Q?zigNn1sfuR+1JorjWI63s2WI9vBjlvPDucxsn3k3/MSGYXBO6M4bfnT2dC0+?= =?us-ascii?Q?FKGPZk64MgilZm3mpTylzfo9ZvpfeArwO46P8U4xoYL3qwiTy5NU8NsM0osy?= =?us-ascii?Q?jBH8rk2aK8V20zEdmiUnIJ2X26lWAph1YB9yHlKH8gjlHo6x0DXquEemIQMC?= =?us-ascii?Q?Gnn9smlsQZif/NTMPftBUn2jUHA83HVUxGYOvkDWvYINWhVxyIxTjuX9vmrU?= =?us-ascii?Q?jrZQ0HbTh+zwwQwjU75g29PQvhwZYWdlvJlFod8klY8JxsV6GQfTuzzef5bC?= =?us-ascii?Q?CDqR5zRCI4LEbJADlg/6WUw97j4s5gd4jXfRRSBkltsIKMqdCowBg1GDcAP4?= =?us-ascii?Q?F/2+vTREQ9oGTKhApnd+GFRI+3XYpdYVAj2QypCaS17Sc3xScnOk1XPb5HiY?= =?us-ascii?Q?BoPWD4mI4cUPvXrUDRgeMicvmXWu?= X-OriginatorOrg: windriver.com X-MS-Exchange-CrossTenant-Network-Message-Id: e033bf61-5022-4f09-d322-08d91749691c X-MS-Exchange-CrossTenant-AuthSource: DM6PR11MB4202.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 May 2021 02:30:31.7801 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 8ddb2873-a1ad-4a18-ae4e-4644631433be X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: RK2q1zF17CEAoE9LRHdqnaHX1SHNNJS94LPG2i+T7+2pvY5RhsJl6Di9jHFxD/2PiiSqj7v59UKUVyXDt43GwqCS9w+juXnxF6DandEiyh4= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR11MB3420 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Zqiang Clear MUTEX_FLAGS when call mutex_lock_interruptible() interrupted by a signal and the lock->wait_list is empty. Signed-off-by: Zqiang --- kernel/locking/mutex.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c index cb6b112ce155..4ac354ca092b 100644 --- a/kernel/locking/mutex.c +++ b/kernel/locking/mutex.c @@ -1081,6 +1081,8 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass, err: __set_current_state(TASK_RUNNING); mutex_remove_waiter(lock, &waiter, current); + if (likely(list_empty(&lock->wait_list))) + __mutex_clear_flag(lock, MUTEX_FLAGS); err_early_kill: spin_unlock(&lock->wait_lock); debug_mutex_free_waiter(&waiter); -- 2.25.1