From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3695087-1523235653-2-8612346748361466424 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, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES ensv, 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= 1523235653; b=DLKI85MlrNWmpc13VamgHePwn+g50rZZQubp5B4D8TdF5clR7C /Fk9bP8U0r/mC63Dd5jITx/goBUuLK4lJID5HXNdJfaA0XChqmV6W6JUhYLQVeyr 7VRy+cYv32JRBg8vKUEb5nhnQrWCjygvp+ey2fgCNaV5JFH48hF2bvDWl6yyx3MD A+L8lKmI6/m5QKbeKtHySVTJPsJaPiaAv11Vr+3Uaqsd530pr+nMBKuo0rHBRaaf 3bZzr0bJQn/RKlVPh5jxrGQ5mvu4of8LJKD4eeDwS/+cF+Gzwd/fRK36fLjz7ugX aWQDxjn56dsxsHfmJd3dtiECUvMmxmNnItRA== 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=1523235653; bh=e8UDj0/H1V 7ipQyzatHcVrUOw57HyTfFQ4om3LgXasI=; b=dH9dN6Y+7W82oGlajxJRepnng6 ZCqCEIVxGKgtPClfK/7JRVhioHgkPeZyzjsyg7orhrNmXCB36q9yru1GTXvRk03p xAsafEtHODI+IDQ2gZLgtWbTI5lxuegBZelEpPON7rHKyilS46yvaHLRVzO4YSu5 1lk7qtRaKLa4Ph5tSTPEvbJdCyj7GQauIinP/dlIgsgSjzOoN503cCjiT7JhQWey 57HaEpmyJqgV5784LYypoaoTe/sB4RXGGmMdT0asehLRxVOsAGgI512/D7Jx6rBF ReoVEKPsamDLx9+TjwScNNT9EMks0CQ1bpbwg5aKWwwUdKbG+5u9SZYcHnvA== ARC-Authentication-Results: i=1; mx2.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=microsoft.com header.i=@microsoft.com header.b=o127M1GM 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: mx2.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=microsoft.com header.i=@microsoft.com header.b=o127M1GM 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: MS4wfM5sJ8raIqgRUmH4bv0gx1oWWSF6Kwu7Rmhi5wcwJ9nJMSQCwoMmiW6sNwwjFgTGbnswKOabGzl1foAsGFsRvKCv/3m8haMDVV5DYPAt7O6kh/ZxIsRK J3K4KFHN75z3GPQT4AjFSXk+5mj5r+eTtGRRIRtB/j1So3dtazcZfyi7cqUN4Dpzqzmgkqz34JTLEHgxWbunWIZYPfNDzCefq1m0k08hG6G/QewuBNuWuLOZ X-CM-Analysis: v=2.3 cv=E8HjW5Vl 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=Byx-y9mGAAAA:8 a=Q-fNiiVtAAAA:8 a=yPCof4ZbAAAA:8 a=yMhMjlubAAAA:8 a=isfTqjNbOI2PD3KCteAA:9 a=wPNLvfGTeEIA:10 a=Fp8MccfUoT0GBdDC_Lng:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754974AbeDIBAh (ORCPT ); Sun, 8 Apr 2018 21:00:37 -0400 Received: from mail-bn3nam01on0094.outbound.protection.outlook.com ([104.47.33.94]:21055 "EHLO NAM01-BN3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933180AbeDIAjk (ORCPT ); Sun, 8 Apr 2018 20:39:40 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Jia-Ju Bai , "Martin K . Petersen" , Sasha Levin Subject: [PATCH AUTOSEL for 3.18 020/101] scsi: megaraid: Fix a sleep-in-atomic bug Thread-Topic: [PATCH AUTOSEL for 3.18 020/101] scsi: megaraid: Fix a sleep-in-atomic bug Thread-Index: AQHTz5qnoOAv7ICgK0qivmjoJEyRiA== Date: Mon, 9 Apr 2018 00:35:26 +0000 Message-ID: <20180409003505.164715-20-alexander.levin@microsoft.com> References: <20180409003505.164715-1-alexander.levin@microsoft.com> In-Reply-To: <20180409003505.164715-1-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;DM5PR2101MB0966;7:5yVDrMEhacKX0ZypvhO/VFs+nG1268PnKcXtCjdurGts6UBfftZtPKsHLkkV+JKzCm82cSwCCc7wKa2aXiouN9W/fdLfZWEUcS2eawQabjz7dhLWrr4fYB9AVeabRkQOc0pNcshdo6Bwu2XVaBGn6sizfxyWQV7QU7kcJIzwJRaLodu4fsGgT+X2DhVqzkLoGPvoi4KnmgCmeNMDTQGCjAWIgbfrjptDB5+Ne1tGRkTLfC7T99Z3PX8s6UvpXMm9;20:H6Jy0NanJ4/3GbJ2axU+7wYz0psUpLutmv1dpPbzUuvIKC6E/4OGn3HpyE0ZI4e1gkN+8x1BRRPmWxJJkaeZdnp501qEOEDcZBn1Aris/Uma6CcF+t9CkhpN0y5z0vk+9RHyM6ZHTw6+lej8NI4Ok/GzC1ZuhcoRyjU+ev43bt8= x-ms-office365-filtering-ht: Tenant X-MS-Office365-Filtering-Correlation-Id: 7c644654-28f9-484d-fc7f-08d59db25fc1 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB0966; x-ms-traffictypediagnostic: DM5PR2101MB0966: 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)(130843839470238)(146099531331640); x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(61425038)(6040522)(2401047)(5005006)(8121501046)(93006095)(93001095)(3231221)(944501327)(52105095)(3002001)(10201501046)(6055026)(61426038)(61427038)(6041310)(20161123558120)(20161123562045)(20161123560045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123564045)(6072148)(201708071742011);SRVR:DM5PR2101MB0966;BCL:0;PCL:0;RULEID:;SRVR:DM5PR2101MB0966; x-forefront-prvs: 0637FCE711 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(366004)(396003)(39380400002)(376002)(346002)(39860400002)(189003)(199004)(5660300001)(26005)(6116002)(305945005)(3846002)(2616005)(68736007)(72206003)(86612001)(476003)(446003)(36756003)(66066001)(2501003)(99286004)(86362001)(478600001)(11346002)(7736002)(105586002)(3280700002)(97736004)(14454004)(110136005)(2906002)(54906003)(4326008)(3660700001)(6486002)(8936002)(486006)(22452003)(10290500003)(6506007)(81166006)(6436002)(316002)(6512007)(59450400001)(6666003)(2900100001)(186003)(76176011)(8676002)(5890100001)(10090500001)(107886003)(5250100002)(81156014)(1076002)(25786009)(106356001)(53936002)(102836004)(22906009)(31853002)(217873001);DIR:OUT;SFP:1102;SCL:1;SRVR:DM5PR2101MB0966;H:DM5PR2101MB1032.namprd21.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; x-microsoft-antispam-message-info: ejgYzuyaFgc2kdddR1ga5rg6o3WlOiOo+qDgC7UyZRLaeLkCu/3uSysZH/KLt2WXOtIRP4Mh9cmTWqR+BR8yuRWZvSacgf8eyZ14Neq8q2SEhUfsMxUNKam4pJbST5OTptirYhBWUkU7Qu2qRkTIkLI37S6kryhsSavdutdVp0YOZb9gl1mfa/iNbVPVHhimzmqO13ahgBjoIXCHUJ4iDOSVekCMNXznheSZAXjY+htvDZwNw1b9BlgXEGe65KUba2ovYHQfH4Clm072kVRKJei2HLg1dJmvBwbqz8G8wSZzjyt5XZj1ZrHMTwWyGY3IOxXDWf69CTVYGxcsN3G75F2Bv6cczuHP/kOM3JkHG3g/sRDrkYDPCaWXEFgoJIukl83ZDaONkVXp/4UN3JAzz0ZnqUqQG1mbEzJiJQxi4uA= 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: 7c644654-28f9-484d-fc7f-08d59db25fc1 X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2018 00:35:26.1579 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0966 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: Jia-Ju Bai [ Upstream commit 896f6966fc815abe71f85fb26f0193875df8a035 ] The driver may sleep under a spin lock, and the function call path is: mraid_mm_attach_buf (acquire the lock by spin_lock_irqsave) pci_pool_alloc(GFP_KERNEL) --> may sleep To fix it, the "GFP_KERNEL" is replaced with "GFP_ATOMIC". [mkp: fixed whitespace] Signed-off-by: Jia-Ju Bai Acked-by: Sumit Saxena Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/megaraid/megaraid_mm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/megaraid/megaraid_mm.c b/drivers/scsi/megaraid/me= garaid_mm.c index a70692779a16..bfc7984a1c17 100644 --- a/drivers/scsi/megaraid/megaraid_mm.c +++ b/drivers/scsi/megaraid/megaraid_mm.c @@ -570,7 +570,7 @@ mraid_mm_attach_buf(mraid_mmadp_t *adp, uioc_t *kioc, i= nt xferlen) =20 kioc->pool_index =3D right_pool; kioc->free_buf =3D 1; - kioc->buf_vaddr =3D pci_pool_alloc(pool->handle, GFP_KERNEL, + kioc->buf_vaddr =3D pci_pool_alloc(pool->handle, GFP_ATOMIC, &kioc->buf_paddr); spin_unlock_irqrestore(&pool->lock, flags); =20 --=20 2.15.1