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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 0F451FA372C for ; Fri, 8 Nov 2019 19:20:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DC24520656 for ; Fri, 8 Nov 2019 19:20:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573240843; bh=ZUSR9VoPo2ZvIQ3c86SNfsIuM/RV9efVWm0nda1ewrk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jki3DJsbrEJBoZhusmjfPyIjaTLSlrkl5i3AileAuZc6sj+HMp/LAMWA93NaH0GoP 3Ot+96IqoI15rWKEOK/y4k9fXsiU/xX9JjN2Gx9sFgvqY1gLHvK4oegKmRDJAFIDm1 JpWZWJtNLspGPHSL8nv+NgnG653JpvtJRKVKC/y4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391414AbfKHTUm (ORCPT ); Fri, 8 Nov 2019 14:20:42 -0500 Received: from mail.kernel.org ([198.145.29.99]:57174 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389380AbfKHTAG (ORCPT ); Fri, 8 Nov 2019 14:00:06 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C16092087E; Fri, 8 Nov 2019 18:57:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573239441; bh=ZUSR9VoPo2ZvIQ3c86SNfsIuM/RV9efVWm0nda1ewrk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yqyItKqlE9Ma7noQRy9NsVw69Yr5Cs5Zm/dNVq5p/04RZAN3YiqEm3ehrBbcsIKlM EusvaPoVNrVww/GIIeMSkKL9e37erP2aNKL+AcDaKeb9TiSAmr6RON/cQ++JTo4/Tu 8/nbtLaIQFFZTgn4+lOEb2fu0B1Ldx//ijOlTHps= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Bodo Stroesser , Bart Van Assche , Hannes Reinecke , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.9 14/34] scsi: target: core: Do not overwrite CDB byte 1 Date: Fri, 8 Nov 2019 19:50:21 +0100 Message-Id: <20191108174633.969621950@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191108174618.266472504@linuxfoundation.org> References: <20191108174618.266472504@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Bodo Stroesser [ Upstream commit 27e84243cb63601a10e366afe3e2d05bb03c1cb5 ] passthrough_parse_cdb() - used by TCMU and PSCSI - attepts to reset the LUN field of SCSI-2 CDBs (bits 5,6,7 of byte 1). The current code is wrong as for newer commands not having the LUN field it overwrites relevant command bits (e.g. for SECURITY PROTOCOL IN / OUT). We think this code was unnecessary from the beginning or at least it is no longer useful. So we remove it entirely. Link: https://lore.kernel.org/r/12498eab-76fd-eaad-1316-c2827badb76a@ts.fujitsu.com Signed-off-by: Bodo Stroesser Reviewed-by: Bart Van Assche Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/target/target_core_device.c | 21 --------------------- 1 file changed, 21 deletions(-) diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index cc38a3509f78c..c3d576ed6f135 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -1046,27 +1046,6 @@ passthrough_parse_cdb(struct se_cmd *cmd, { unsigned char *cdb = cmd->t_task_cdb; - /* - * Clear a lun set in the cdb if the initiator talking to use spoke - * and old standards version, as we can't assume the underlying device - * won't choke up on it. - */ - switch (cdb[0]) { - case READ_10: /* SBC - RDProtect */ - case READ_12: /* SBC - RDProtect */ - case READ_16: /* SBC - RDProtect */ - case SEND_DIAGNOSTIC: /* SPC - SELF-TEST Code */ - case VERIFY: /* SBC - VRProtect */ - case VERIFY_16: /* SBC - VRProtect */ - case WRITE_VERIFY: /* SBC - VRProtect */ - case WRITE_VERIFY_12: /* SBC - VRProtect */ - case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */ - break; - default: - cdb[1] &= 0x1f; /* clear logical unit number */ - break; - } - /* * For REPORT LUNS we always need to emulate the response, for everything * else, pass it up. -- 2.20.1