From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3440611-1521483118-2-8990923767595737865 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, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' 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=1521483117; b=kows4DV3e1tv54P61qShZeYGI8U44DBQlE8BOZxDye/m28L 2t1reiEERFJafOWK0exnSi+g33fQB/7fZvS4KKBu9MsnxJIHXPUKHNYAU+9jwvwC o44QUmaYmYHr1jbm07YVnp21AOzf2Ws6TztzmOnmWfKiVDngE/fayzVfmpXW5iU8 ImNhaRoaC0xX7x6yu8e7iAFxLd+IZXV49e9FmDnuUWUIJEcqp1eqUYtW6fwKPN+K IiVeZtTd8UnfqPvuE/oqMKn04KPb4MUuIEnRbxkRlYwq7y5/OdXiYuc6szVYW//M P4ZckpUfjMtzqaK63J20/KRmOlo8iN+gWCbRqrw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1521483117; bh=PldDpC64PWJKBb288diEyj6Xso 1tZ0zyP41vbVtLHoc=; b=EM4cdW4zvlusO5bIKKgeHb4iL3WyPAy057pfnOdyN/ GNacWQ6rg3VigRXsJU0yhUTy5QSTjwLXwVDPXw2FI8AG+Iqq88IWbfafXVkvD/UH r3cP6GS/Fb9Eq5O9xtyogADWYys//D3iTTEOyRTnRusaGmZSYCptuFT+7y81hjLw 0WOnw08mK5KCZBFWRA0OwPubqdTomVW1ItKZWIZ5o1JHJLI7jK6OmMFWlWUKD2eO YHgEXPStrVLgf+1I6Mc3ipDFxyv2wHtGn1ADHbECy7IjXUs/9la4VdwuVRlYYFt9 YIICRRLVojbGW4h20B+AH0i1LAIA8nq6n91FqLZGtxoQ== ARC-Authentication-Results: i=1; mx2.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; 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=gggruggvucftvghtrhhoucdtuddrgedtgedrudefgddutdelucdltddurdegtdefrddttddmucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvffufffkofgjfhgfgggtshhpjeesthdtfedtreerjeenucfhrhhomhepifhrvghgucfmrhhorghhqdfjrghrthhmrghnuceoghhrvghgkhhhsehlihhnuhigfhhouhhnuggrthhiohhnrdhorhhgqeenucfkphepvddtledrudefvddrudektddrieejpdeltddrledvrdeiuddrvddtvdenucfrrghrrghmpehinhgvthepvddtledrudefvddrudektddrieejpdhhvghlohepvhhgvghrrdhkvghrnhgvlhdrohhrghdpmhgrihhlfhhrohhmpeeoshhtrggslhgvqdhofihnvghrsehvghgvrhdrkhgvrhhnvghlrdhorhhgqecuuefqffgjpeekuefkvffokffogfcuuffkkgfgpeefvdeiieenucevlhhushhtvghrufhiiigvpedt; 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=linuxfoundation.org header.result=pass header_is_org_domain=yes Authentication-Results: mx2.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; 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=gggruggvucftvghtrhhoucdtuddrgedtgedrudefgddutdelucdltddurdegtdefrddttddmucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvffufffkofgjfhgfgggtshhpjeesthdtfedtreerjeenucfhrhhomhepifhrvghgucfmrhhorghhqdfjrghrthhmrghnuceoghhrvghgkhhhsehlihhnuhigfhhouhhnuggrthhiohhnrdhorhhgqeenucfkphepvddtledrudefvddrudektddrieejpdeltddrledvrdeiuddrvddtvdenucfrrghrrghmpehinhgvthepvddtledrudefvddrudektddrieejpdhhvghlohepvhhgvghrrdhkvghrnhgvlhdrohhrghdpmhgrihhlfhhrohhmpeeoshhtrggslhgvqdhofihnvghrsehvghgvrhdrkhgvrhhnvghlrdhorhhgqecuuefqffgjpeekuefkvffokffogfcuuffkkgfgpeefvdeiieenucevlhhushhtvghrufhiiigvpedt; 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=linuxfoundation.org header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S967703AbeCSSLm (ORCPT ); Mon, 19 Mar 2018 14:11:42 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:42394 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935527AbeCSSLj (ORCPT ); Mon, 19 Mar 2018 14:11:39 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Johannes Thumshirn , Chris Clayton , Douglas Gilbert , Hannes Reinecke , "Martin K. Petersen" , Cristian Crinteanu Subject: [PATCH 3.18 66/68] scsi: sg: fix SG_DXFER_FROM_DEV transfers Date: Mon, 19 Mar 2018 19:06:44 +0100 Message-Id: <20180319171837.154460408@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180319171827.899658615@linuxfoundation.org> References: <20180319171827.899658615@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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: 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johannes Thumshirn commit 68c59fcea1f2c6a54c62aa896cc623c1b5bc9b47 upstream. SG_DXFER_FROM_DEV transfers do not necessarily have a dxferp as we set it to NULL for the old sg_io read/write interface, but must have a length bigger than 0. This fixes a regression introduced by commit 28676d869bbb ("scsi: sg: check for valid direction before starting the request") Signed-off-by: Johannes Thumshirn Fixes: 28676d869bbb ("scsi: sg: check for valid direction before starting the request") Reported-by: Chris Clayton Tested-by: Chris Clayton Cc: Douglas Gilbert Reviewed-by: Hannes Reinecke Tested-by: Chris Clayton Acked-by: Douglas Gilbert Signed-off-by: Martin K. Petersen Cc: Cristian Crinteanu Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/sg.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -769,8 +769,11 @@ static bool sg_is_valid_dxfer(sg_io_hdr_ if (hp->dxferp || hp->dxfer_len > 0) return false; return true; - case SG_DXFER_TO_DEV: case SG_DXFER_FROM_DEV: + if (hp->dxfer_len < 0) + return false; + return true; + case SG_DXFER_TO_DEV: case SG_DXFER_TO_FROM_DEV: if (!hp->dxferp || hp->dxfer_len == 0) return false;