From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3444635-1521482680-2-3668862124194255308 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 endasv, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', 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=arctest; t=1521482680; b=hZt91eOuf04rOLiZ3QgzEQK1buYR/58Elf2UITe5+A5pgNa 6AlCrcD+u5hKRx4ZEUncJf7YYBr7RLENB+5RNJYd6w1JrA0s44xMC1gHjNoAGkmA L0rcbacIqigFPwNhb5zet+Nqg8XoqvWsuFtytNfZxf+sBsfLJzHk4MQZG2migO0Y gcH6RO2jTGWrx5PuASdjUvsSWZen2HfCrXSUZ7H0dgkvRJJHJn5rk6P+W231Ii1L DeWR0RGLNkIqeT1fL6Xqz9584g52vN8xvXwBBxJtm4atkHygCiZIvpOP80UyLQpX ZSvh5/TnEjmCHqAgyF/lF8760+E39lBJTvSzIbg== 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=arctest; t=1521482680; bh=aANUwu SsVw7tndS5a7ape7608sMBtiFaVne3D8jUQKg=; b=GUf0pijceEBvDNyOoWg6GL UbZScUGKRZvcfsSBIPrqw7Rr772kenl4kRWAjOcE4bZH2ARINcBwTNjoYwFeiYn4 d7VY7a1mTUwfHfsvLNFmCuDiWD1Z9o207jVLDeWjdEsE7ZPENzN13Pdda0qOT75h 0qorwoeQ8XY5oV5091aWxdT/X/IQ78DSRhQMrt1tYjFzcMWawHZKML/1Ynvi6dUd DLmYNE1PcoFr8KtRWf5LRsdfMHHfi3jags/6SBtvlHbGRzAxkYn1s95z/z3OjXj3 /xgIhdvTXuYmDd/t1ELcG73A4f0O5XKP3/ZZpIXhW4oKl1Lsj/2JaL38N3PbJfGA == ARC-Authentication-Results: i=1; mx6.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=microsoft.com header.i=@microsoft.com header.b=SMDsWfpo 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-category=clean score=-100 state=0 spamcause=gggruggvucftvghtrhhoucdtuddrgedtgedrudefgddutdekucdltddurdegtdefrddttddmucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvffuthffkfhfjghitgfggghsphejsehtqhertddttddunecuhfhrohhmpefurghshhgrucfnvghvihhnuceotehlvgigrghnuggvrhdrnfgvvhhinhesmhhitghrohhsohhfthdrtghomheqnecukfhppedvtdelrddufedvrddukedtrdeijedphedvrdduieekrdehgedrvdehvddpfhgvkedtmeemfegulegsmeejlegvjeemleegvggsmeehugeivdenucfrrghrrghmpehinhgvthepvddtledrudefvddrudektddrieejpdhhvghlohepvhhgvghrrdhkvghrnhgvlhdrohhrghdpmhgrihhlfhhrohhmpeeoshhtrggslhgvqdhofihnvghrsehvghgvrhdrkhgvrhhnvghlrdhorhhgqecuuefqffgjpeekuefkvffokffogfcuuffkkgfgpeejtdejheenucevlhhushhtvghrufhiiigvpeektd; 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 Authentication-Results: mx6.messagingengine.com; arc=none (no signatures found); dkim=pass (1024-bit rsa key sha256) header.d=microsoft.com header.i=@microsoft.com header.b=SMDsWfpo 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-category=clean score=-100 state=0 spamcause=gggruggvucftvghtrhhoucdtuddrgedtgedrudefgddutdekucdltddurdegtdefrddttddmucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvffuthffkfhfjghitgfggghsphejsehtqhertddttddunecuhfhrohhmpefurghshhgrucfnvghvihhnuceotehlvgigrghnuggvrhdrnfgvvhhinhesmhhitghrohhsohhfthdrtghomheqnecukfhppedvtdelrddufedvrddukedtrdeijedphedvrdduieekrdehgedrvdehvddpfhgvkedtmeemfegulegsmeejlegvjeemleegvggsmeehugeivdenucfrrghrrghmpehinhgvthepvddtledrudefvddrudektddrieejpdhhvghlohepvhhgvghrrdhkvghrnhgvlhdrohhrghdpmhgrihhlfhhrohhmpeeoshhtrggslhgvqdhofihnvghrsehvghgvrhdrkhgvrhhnvghlrdhorhhgqecuuefqffgjpeekuefkvffokffogfcuuffkkgfgpeejtdejheenucevlhhushhtvghrufhiiigvpeektd; 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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965617AbeCSSDs (ORCPT ); Mon, 19 Mar 2018 14:03:48 -0400 Received: from mail-by2nam01on0098.outbound.protection.outlook.com ([104.47.34.98]:46928 "EHLO NAM01-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S965609AbeCSQDz (ORCPT ); Mon, 19 Mar 2018 12:03:55 -0400 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Jia-Ju Bai , "David S . Miller" , Sasha Levin Subject: [PATCH AUTOSEL for 4.9 185/281] mISDN: Fix a sleep-in-atomic bug Thread-Topic: [PATCH AUTOSEL for 4.9 185/281] mISDN: Fix a sleep-in-atomic bug Thread-Index: AQHTv5uMyPSa7gTObEmrtrPCZFvKlA== Date: Mon, 19 Mar 2018 16:01:32 +0000 Message-ID: <20180319155742.13731-185-alexander.levin@microsoft.com> References: <20180319155742.13731-1-alexander.levin@microsoft.com> In-Reply-To: <20180319155742.13731-1-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;DM5PR2101MB1077;7:Fh6CzAgn/EWpcL31B9MpHKBiSWEA2yQJhS/6DlJqbKZIRp9Uq7zY04XhFMfEIqe5dCHlGSC4X8SG38GbS9xH1FpMFG4ctXrPQtYinbN7vNNhDlYF8k0MKsxky1zrSpTR4kDG56yEQw8fxs3/k6s/mN8JZjyEqzEUyZ8ifVyrEA44Tzkul7Y/jYrlTJQBgsu8PHXPK3Gw1fR/QUXILlB8760vbJM3m6E+F/kmqxkNyvFPAD5XD/PALpdPp44zwl3P;20:1fkbkKucBKPxKidKQZ4CP11tn3TuU3VTny1fW+V33yR8tnsu4/YFP+uS7IG+c636oiDUzLr45iUIOD5R7uTspeq1J7xprxtipPIw0lxelSYV/TWoQWjJNm4AynKkpuwycoN1ZS0TC8hUXAnGOmLl3c81M6TcaEwehaKMyXfz9DI= x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: ef973799-8d0f-41c6-e112-08d58db300c0 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB1077; x-ms-traffictypediagnostic: DM5PR2101MB1077: 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); x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(61425038)(6040522)(2401047)(8121501046)(5005006)(93006095)(93001095)(10201501046)(3231221)(944501300)(52105095)(3002001)(6055026)(61426038)(61427038)(6041310)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123564045)(20161123562045)(20161123558120)(20161123560045)(6072148)(201708071742011);SRVR:DM5PR2101MB1077;BCL:0;PCL:0;RULEID:;SRVR:DM5PR2101MB1077; x-forefront-prvs: 06167FAD59 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(346002)(376002)(39860400002)(396003)(39380400002)(366004)(199004)(189003)(110136005)(36756003)(3280700002)(66066001)(3660700001)(4326008)(6666003)(2950100002)(25786009)(86612001)(105586002)(10090500001)(68736007)(22452003)(99286004)(106356001)(5660300001)(7736002)(305945005)(76176011)(54906003)(5250100002)(97736004)(316002)(2501003)(3846002)(6116002)(1076002)(2906002)(14454004)(2900100001)(6512007)(8936002)(186003)(478600001)(10290500003)(53936002)(8676002)(107886003)(6436002)(81166006)(86362001)(6506007)(59450400001)(102836004)(26005)(72206003)(6486002)(81156014)(22906009)(31853002)(217873001);DIR:OUT;SFP:1102;SCL:1;SRVR:DM5PR2101MB1077;H:DM5PR2101MB1032.namprd21.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; x-microsoft-antispam-message-info: Z+dPXI7BknDzHncwWt8SPXpMgBQ6yvCqGxYe2+LYlE6EoCWmx8DBDjZ/WFB8oFaOkKVUgYy8ZDeA/N+H/ZVvmvuXIIltnplO4rSi+HnUzTPFw64A/qQj1kzLt+lPdMzKm+Nv3egn9jz9NzVyVxLsZg9Z/MkjIOXr4G5pfrjkzNwLRvpv4jvBBDAIGsYpsyQVcFUtLKzlwjCFfpy3BbJqr3ya4XXZQAp6jI1FAL1TkVdo4rTMzxFB5T7PwpH4q11bcKM5lPzzpoo7KMKd8WmEDFxA5Ipx6nAT4Mm0mxUuxL0cFMGagdX9qI13TUafZ35ER6pemrapSrCWnGRmg2TaDQ== 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: ef973799-8d0f-41c6-e112-08d58db300c0 X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Mar 2018 16:01:32.6571 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1077 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 93818da5eed63fbc17b64080406ea53b86b23309 ] The driver may sleep under a read spin lock, and the function call path is: send_socklist (acquire the lock by read_lock) skb_copy(GFP_KERNEL) --> may sleep To fix it, the "GFP_KERNEL" is replaced with "GFP_ATOMIC". Signed-off-by: Jia-Ju Bai Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/isdn/mISDN/stack.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/isdn/mISDN/stack.c b/drivers/isdn/mISDN/stack.c index 9cb4b621fbc3..b92a19a594a1 100644 --- a/drivers/isdn/mISDN/stack.c +++ b/drivers/isdn/mISDN/stack.c @@ -72,7 +72,7 @@ send_socklist(struct mISDN_sock_list *sl, struct sk_buff = *skb) if (sk->sk_state !=3D MISDN_BOUND) continue; if (!cskb) - cskb =3D skb_copy(skb, GFP_KERNEL); + cskb =3D skb_copy(skb, GFP_ATOMIC); if (!cskb) { printk(KERN_WARNING "%s no skb\n", __func__); break; --=20 2.14.1