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Sat, 3 Mar 2018 19:31:14 -0500 Received: from mail-by2nam01on0124.outbound.protection.outlook.com ([104.47.34.124]:45281 "EHLO NAM01-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933006AbeCCW1z (ORCPT ); Sat, 3 Mar 2018 17:27:55 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Christophe Leroy , Al Viro , Sasha Levin Subject: [PATCH AUTOSEL for 4.15 096/102] Fix misannotated out-of-line _copy_to_user() Thread-Topic: [PATCH AUTOSEL for 4.15 096/102] Fix misannotated out-of-line _copy_to_user() Thread-Index: AQHTsz562L/4dcfpFUWcCX0Yng9hgA== Date: Sat, 3 Mar 2018 22:25:05 +0000 Message-ID: <20180303222318.26006-96-alexander.levin@microsoft.com> References: <20180303222318.26006-1-alexander.levin@microsoft.com> In-Reply-To: <20180303222318.26006-1-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;MW2SPR01MB06;7:fy/+/j0G2VgodFHfHR9C+jWr+Swh6wYFQfdYt6BARYSvO7Ej9dJ91BEuLhruDsgg2qnJ4nSkGAAc6mfUj07d46utVr6Gx8w8nZA2Fhhdss8jaPb7k7jUh4/zTMamDKit3c01veJikArqv522/2Qs2xd6je2cJQKftEevJHQ11PuATIeHVLfN4aUJxk01PK9T49bzQXOyPnsHUzneuC3p48rP1c1E342FS2RIrioKSW944D79G6DU1GeM2gwZdNG5 x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 4587e1c9-1d4f-46a4-6af1-08d5815600fc x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(4534165)(4627221)(201703031133081)(201702281549075)(48565401081)(5600026)(4604075)(3008032)(2017052603307)(7193020);SRVR:MW2SPR01MB06; 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x-microsoft-antispam-message-info: 5b5nqOSbKEJaqt43Vm+Ngto0FE2smbX4zITSPndaK5KA2KauPmbuljSc+IozsvEQnAkETTUnlGYAt/E+cEVZ2jQVSN+2N41vfsGpFohdxiXfMvtPCahwqWmvSQXgpCjoCNl8xqThgybWLOV5EEOgrgqwagqZzttMIi/l23XGiz0= 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: 4587e1c9-1d4f-46a4-6af1-08d5815600fc X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Mar 2018 22:25:05.4003 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW2SPR01MB06 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: Christophe Leroy [ Upstream commit a0e94598e6b6c0d1df6a5fa14eb7c767ca817a20 ] Destination is a kernel pointer and source - a userland one in _copy_from_user(); _copy_to_user() is the other way round. Fixes: d597580d37377 ("generic ...copy_..._user primitives") Signed-off-by: Christophe Leroy Signed-off-by: Al Viro Signed-off-by: Sasha Levin --- lib/usercopy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/usercopy.c b/lib/usercopy.c index 15e2e6fb060e..3744b2a8e591 100644 --- a/lib/usercopy.c +++ b/lib/usercopy.c @@ -20,7 +20,7 @@ EXPORT_SYMBOL(_copy_from_user); #endif =20 #ifndef INLINE_COPY_TO_USER -unsigned long _copy_to_user(void *to, const void __user *from, unsigned lo= ng n) +unsigned long _copy_to_user(void __user *to, const void *from, unsigned lo= ng n) { might_fault(); if (likely(access_ok(VERIFY_WRITE, to, n))) { --=20 2.14.1