From patchwork Fri May 28 18:13:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 12287361 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham 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 6B159C47087 for ; Fri, 28 May 2021 18:13:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4F0EA613D1 for ; Fri, 28 May 2021 18:13:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229571AbhE1SPS (ORCPT ); Fri, 28 May 2021 14:15:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55390 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229481AbhE1SPQ (ORCPT ); Fri, 28 May 2021 14:15:16 -0400 Received: from mail-pf1-x433.google.com (mail-pf1-x433.google.com [IPv6:2607:f8b0:4864:20::433]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A3A66C061761 for ; Fri, 28 May 2021 11:13:41 -0700 (PDT) Received: by mail-pf1-x433.google.com with SMTP id g18so3854851pfr.2 for ; Fri, 28 May 2021 11:13:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=2qeALokNh1iV94XoUXRrDmoZR32MixsQjhUt5pfNJoI=; b=lQNTcma3W0ACxWMruXV7/81HRYphyAY8g2cuty+wJCt3nGYR4BkCqF93KWCxfVSgWd CYIQAdbJ9q5xGrttJRZcBKZ1qBxC7OiO8W6Lg+No4WLDszS7V76vc/Ijr4ZwZLWxdvo0 hzKK655EJn+SH0dQglsX3i9ZruvGAqgX4/RCs= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=2qeALokNh1iV94XoUXRrDmoZR32MixsQjhUt5pfNJoI=; b=cd5sg0PfHMMFMCy3zWrz+ivUgwNthmKXDapSBGjzYPSQStXpnp/GtmioXWJHo0WFq0 asWzMJeC0z3uZLvmI551fmnM1+jeLqi0cBzDIYKVzlmmLJ96lS7kDm09fa6IzaKOF9sT FQ3EuCHpTGkenbHlCz5ccMQ3A6hbEemsNfWsEbqkLtqvJpYTuJuqaPHnbvsDNLL1Xzvd nF2cG6Towdm9ftdu5YJCoziO79wG3O/PUUT9wVbu4kub+7rqnTopADJ6a+L0eNirO76X BMFORvlo/Y7ItfXEg20IealsbGiS1x+YvbLCWm74dQCl8hibBzALL9QjckGOcdoAv27H p1og== X-Gm-Message-State: AOAM531tN0HftAldcFG5JIXj/+mgmhdPNxAqKjA01GmNp9l+rgieK8Jw EKdGB84XFWATO50x9UoyxrxJIw== X-Google-Smtp-Source: ABdhPJxFmCkd0ibmjXyUuAdn8d/4VfScR2HWYJAXlSdavzr2ixQTNEmpBI6ECAbqgrgR+QBJ/JKcrQ== X-Received: by 2002:aa7:9632:0:b029:2dc:6ef5:b1d3 with SMTP id r18-20020aa796320000b02902dc6ef5b1d3mr5112059pfg.53.1622225621169; Fri, 28 May 2021 11:13:41 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id a4sm2586464pjw.46.2021.05.28.11.13.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 May 2021 11:13:40 -0700 (PDT) From: Kees Cook To: "Martin K . Petersen" Cc: Kees Cook , Hannes Reinecke , "James E.J. Bottomley" , "Gustavo A. R. Silva" , Bradley Grove , Artur Paszkiewicz , linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH 1/3] scsi: fcoe: Statically initialize flogi_maddr Date: Fri, 28 May 2021 11:13:35 -0700 Message-Id: <20210528181337.792268-2-keescook@chromium.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210528181337.792268-1-keescook@chromium.org> References: <20210528181337.792268-1-keescook@chromium.org> MIME-Version: 1.0 X-Patch-Hashes: v=1; h=sha256; g=e47d32aead2f09bc45fd65562793c517f4bec062; i=95Is7JkaFTuD8yBK8ZqRtqMfruaTolJ5BECzzYphzjk=; m=vQ0LG77sh0mlAVazI/73j+Gz+gKUZUqL7rNbsd9G8Fs=; p=TzjuF1GRL8hWYpJl6NqKvAbiso01z27hEDzS+3XCjHI= X-Patch-Sig: m=pgp; i=keescook@chromium.org; s=0x0x8972F4DFDC6DC026; b=iQIzBAABCgAdFiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmCxMtAACgkQiXL039xtwCbwyQ/9Hy2 OTO06JGqppO0iq5Dx1GWxVn4JgLYqE3VJ0gnpter+B+v1LiMh56sZRTI7x4QH5gwb3JVm88AuFGcU DNVW/xus2hxgZ+ACYLgHgrvlvXsd48n+7ikO4yoDbI0AAYUy2ytnqCz1G+JZ6c1G+ACQrvOvo2FPM vAm7ZrzieMlnI/wLMsliurZ1nej0X2dmU+PNki/rkNdsqUPGJfYyPxpFcL88ThJi+yLS43VDVzIrf mtOUkomtBQ5tBUzMi668R/IUoN0SwXl1MKoTQhVO82sgRRJgwSdUxEtEY/hEGq0afVLpBDmDeQ7hd Qrx8DrEYijHnxNT/F7hQL/9/vX/OP3x/KJc98DSGO8IzyplJ1nl9kaf17UB8Sd1TsKXFnHsoHMTya PXHJWDbBW/KmhyoH9Nsa+pgAleQE+zMbXN3LtOgqWwJd2v50GiJOT0/pnU6RreWn0bNMkOGXCdgif 02Vq17oK5PKnd0PjJfkyZOu9XXmneKeGVrK/IOh+HgaBJSjOB2H5P0P0nRJbA6Q+ucDeT4Ak3K2FI Xg25afXg4/wLMvNMqjUcI5d3E14vs1hxPsglDzH8oWKB7tnDckuAoBCb09ZLmXSWBRYdHQWFxM/AU D13XZeosaTixq0Zp14CuJvAIVrJdGmf5Bq5ma4b/WP5wVe3PDD+GMzQK7swLg/+E= Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memcpy() using memcpy() with an inline const buffer and instead just statically initialize the destination array directly. Signed-off-by: Kees Cook --- drivers/scsi/fcoe/fcoe.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index 89ec735929c3..8991990e6639 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -293,7 +293,7 @@ static int fcoe_interface_setup(struct fcoe_interface *fcoe, struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); struct netdev_hw_addr *ha; struct net_device *real_dev; - u8 flogi_maddr[ETH_ALEN]; + u8 flogi_maddr[ETH_ALEN] = FC_FCOE_FLOGI_MAC; const struct net_device_ops *ops; fcoe->netdev = netdev; @@ -336,7 +336,6 @@ static int fcoe_interface_setup(struct fcoe_interface *fcoe, * or enter promiscuous mode if not capable of listening * for multiple unicast MACs. */ - memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); dev_uc_add(netdev, flogi_maddr); if (fip->spma) dev_uc_add(netdev, fip->ctl_src_addr); @@ -442,7 +441,7 @@ static void fcoe_interface_remove(struct fcoe_interface *fcoe) { struct net_device *netdev = fcoe->netdev; struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); - u8 flogi_maddr[ETH_ALEN]; + u8 flogi_maddr[ETH_ALEN] = FC_FCOE_FLOGI_MAC; const struct net_device_ops *ops; /* @@ -458,7 +457,6 @@ static void fcoe_interface_remove(struct fcoe_interface *fcoe) synchronize_net(); /* Delete secondary MAC addresses */ - memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); dev_uc_del(netdev, flogi_maddr); if (fip->spma) dev_uc_del(netdev, fip->ctl_src_addr); From patchwork Fri May 28 18:13:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 12287359 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham 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 5E0F7C2B9F7 for ; Fri, 28 May 2021 18:13:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 38604613D1 for ; Fri, 28 May 2021 18:13:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229549AbhE1SPR (ORCPT ); Fri, 28 May 2021 14:15:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55388 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229476AbhE1SPQ (ORCPT ); Fri, 28 May 2021 14:15:16 -0400 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 87627C061760 for ; Fri, 28 May 2021 11:13:41 -0700 (PDT) Received: by mail-pl1-x631.google.com with SMTP id b7so2036094plg.0 for ; Fri, 28 May 2021 11:13:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=CDvnpqBXqv8XLON1AxPWRjfcHJXzeJBqZ9NYKHrBM5o=; b=KyHPf8zdegewQA7dP0UIsSm3gZOTOHeu6NEg2WQWCjAVqhINgAz1dXE2thdsB1f/8W OD2MNTa+SQK6s3vI3syyCaNqsVHiQT34AGX/O8FOwDCvFFQabaFlvk1XS5FRSH16W1jZ 0w0OESRA5zzkEUTW24p1/3pbJHMFkXXhzfjGM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=CDvnpqBXqv8XLON1AxPWRjfcHJXzeJBqZ9NYKHrBM5o=; b=ZU8axt9XDThwKwqwXyhz87AF90K+F5SzY50q3dO06UGKKlmAOHFiV+M2qF/9CCsAOe IubIBkEn3+7oIdu7Yx/xYYbTnaKMeU38ao0hW/r2Lmr+7lA+67Se9rGQzfFB/U6DxveE TLSCLum9fUX0wQkkDWEDa7rcjM1oyM6E8waOu9Py8Zk9HkwYir85s+tOm7QwUIKnksyT 5nNvc/i9RHtrAoFdqPcKsGfzVJNERqFre4MHQsNmqKENJLYLX/xR98PTTu+vtp2dHI5Y akRR1akV2HNHIFrz6V21+kjPAf817Gdxm9TZV1yIFQlNXjuojdu2ZF9vaMn1qod3iGe0 GN9Q== X-Gm-Message-State: AOAM531SUvC7jew42o7xGlv6j4BscI8z5m98gxSEZVSSqi2lssDQ/gL0 wiRHduHGcEsCqOUK6GzfQG0OQw== X-Google-Smtp-Source: ABdhPJy0pEj5kXexZ3kbLMRUqpx5WAYMi/90yCyx0lldYTW/IAk5CHNJdRyH2RLdK+kAJq1S5xwhPg== X-Received: by 2002:a17:90b:4386:: with SMTP id in6mr5775448pjb.160.1622225620900; Fri, 28 May 2021 11:13:40 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id 21sm4764913pfh.103.2021.05.28.11.13.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 May 2021 11:13:40 -0700 (PDT) From: Kees Cook To: "Martin K . Petersen" Cc: Kees Cook , Hannes Reinecke , "James E.J. Bottomley" , "Gustavo A. R. Silva" , Bradley Grove , Artur Paszkiewicz , linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH 2/3] scsi: esas2r: Switch to flexible array member Date: Fri, 28 May 2021 11:13:36 -0700 Message-Id: <20210528181337.792268-3-keescook@chromium.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210528181337.792268-1-keescook@chromium.org> References: <20210528181337.792268-1-keescook@chromium.org> MIME-Version: 1.0 X-Patch-Hashes: v=1; h=sha256; g=ed33a7a5f3363106fee565de7dbeee0ed0e40367; i=BYSzddwUIutLMyBe4gwWgWRPW0Hyydpyw0TO1883Jzg=; m=YbO8CRPgssEoXh7CdGXaGg4HSn/4MdRiTXs7ilaylIE=; p=lWDkVNs9OQuwMDzmOamHffGHEwqku1AwhzpCn4AKrps= X-Patch-Sig: m=pgp; i=keescook@chromium.org; s=0x0x8972F4DFDC6DC026; b=iQIzBAABCgAdFiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmCxMtAACgkQiXL039xtwCYbjxAApoR gVcRcTyxYGtZIQKqX/2G6HqNiiSzqxvfk7xFPlCDVWGGJ2pACdpFHWfIDslPj5dmTaVr+fJ+SemQb Sw+bs48JHiL2nlUIez21DyHDlhO/V7AtPQzFmDgOEBPvgHQcIhhIa3uLiVzjo+3THPMcudJjtrBuM t8Ml1IcYym3eY4cwTCleCwwCujdIe+e+cutoTJZCp6neD0BeAPdfLvyddMC6cr4CtQmzMa6PcWPKL 1V2N7Td3Qi1m6AD2TLlDIffwLiQMjIV6s4zZxp9b1ZyGNIrrwOpBg0vppST0YSCH56/KeEAFZN6bb /JG6hZm8iR56E+X65xV4rOG0+Vjyr+kn9KS5iE7RJo276zzt9PcmnXetpV9XdP4UwS6Xp6fQJuqm3 VYHOSmoPADBUUhoYBHRSU3L3lZNzFFAV1TNYraoafgEaWziHEqnUnpnhie6eW+4fYSMI7nqoGqc5y keC5ukPpw3skUYfe1X7oSUe3Y4og+v0qAInEbcqlcw1QDmtXBcOeOp3z7ZgF/4R8MPmS8RHfNRM5Q daQ8HXLrV6zguj3cCmERbio5z3R7sW4pz9rmvitzVk3ej2aYwDNmioUhExtBwFAVOcR2q7ZahfINn MmzR5Ginfa9TjTS/YTWSkxWsG01LU8dN5oox8qjrzcksZpaVGcyYuaqFlZSOfwRo= Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memcpy(), avoid intentionally writing across neighboring array fields. Remove old-style 1-byte array in favor of a flexible array[1] to avoid future false-positive cross-field memcpy() warning in: esas2r_vda.c: memcpy(vi->cmd.gsv.version_info, esas2r_vdaioctl_versions, ...) The change in struct size doesn't change other structure sizes (it is already maxed out to 256 bytes, for example here: union { struct atto_ioctl_vda_scsi_cmd scsi; struct atto_ioctl_vda_flash_cmd flash; struct atto_ioctl_vda_diag_cmd diag; struct atto_ioctl_vda_cli_cmd cli; struct atto_ioctl_vda_smp_cmd smp; struct atto_ioctl_vda_cfg_cmd cfg; struct atto_ioctl_vda_mgt_cmd mgt; struct atto_ioctl_vda_gsv_cmd gsv; u8 cmd_info[256]; } cmd; No sizes are calculated using the enclosing structure, so no other updates are needed. Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva --- drivers/scsi/esas2r/atioctl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/esas2r/atioctl.h b/drivers/scsi/esas2r/atioctl.h index 4aca3d52c851..ff2ad9b38575 100644 --- a/drivers/scsi/esas2r/atioctl.h +++ b/drivers/scsi/esas2r/atioctl.h @@ -1141,7 +1141,7 @@ struct __packed atto_ioctl_vda_gsv_cmd { u8 rsp_len; u8 reserved[7]; - u8 version_info[1]; + u8 version_info[]; #define ATTO_VDA_VER_UNSUPPORTED 0xFF }; From patchwork Fri May 28 18:13:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 12287363 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,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 4338FC4708F for ; Fri, 28 May 2021 18:13:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2399C613E3 for ; Fri, 28 May 2021 18:13:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229591AbhE1SPS (ORCPT ); Fri, 28 May 2021 14:15:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55392 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229488AbhE1SPQ (ORCPT ); Fri, 28 May 2021 14:15:16 -0400 Received: from mail-pg1-x52d.google.com (mail-pg1-x52d.google.com [IPv6:2607:f8b0:4864:20::52d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB277C061763 for ; Fri, 28 May 2021 11:13:41 -0700 (PDT) Received: by mail-pg1-x52d.google.com with SMTP id m190so3144344pga.2 for ; Fri, 28 May 2021 11:13:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=mRXKn2a2TJxYpNg614xQbH+vgHW7yySJqcrC710VWeE=; b=JrEGdHhP7EFQ1SgkGbszsPMb+bl/KdtbyLCtWuYiqIWndBXagmFrCFffFHn12mBaFe v4mY9qlnt+JfEotilQMrF+en1bU+WoiUtTZUMtsQC2SsVufVCdjHQvfcnHwYSFMwkVQ4 xaMcJ1hhe1R8fFbRNUStlFVu9RvgRLrPYVxSQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=mRXKn2a2TJxYpNg614xQbH+vgHW7yySJqcrC710VWeE=; b=OlZBuB7oHXCgFEpI/rfQ6pvmmuMSnywrT1dAqxGegpPPmf5fW66XCOuTywIAFkSyrm kWLO2eXZlHCYn6znNwIMtcvsOUBEyM7mQCpC50bAXFeI3h0kjYXc4WCr3EfsS43UuJ1e scWgIuiI8oCVcSYfOvsBXs5Ht9SpIXy24FVXKOej0Ez+EoUnh870RU8G4zupQ5hwyS6Q FQMJ6WNI5qWWJpshpWFYjv8gbBTw+8nf2uO9zHOAU+QCtQwrGCdGhilwKpYtQysx2BS6 JiSmCKR1cTGgTXwQY5Js0vUeeFNaDLn8CGuq2G1MA1R3YVKrEqq7Dog/p/bDEAeRxqGj kXrQ== X-Gm-Message-State: AOAM53269s7IDu1z6RV4+q/TKCUjlZixdZ9YZUC7Vf8C2ipJkiOlJNCp kD6+RQNM2PsGuVs/Ino1xetrGw== X-Google-Smtp-Source: ABdhPJxONg4ZMLOBq2VKLCPpR2hd5Drqrxa8BYCsNQHzbr0Z55Qng5iRcr3wufgddr3PDf9/LyuVTQ== X-Received: by 2002:a65:60da:: with SMTP id r26mr10169451pgv.133.1622225621525; Fri, 28 May 2021 11:13:41 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id g8sm4637163pfo.85.2021.05.28.11.13.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 May 2021 11:13:40 -0700 (PDT) From: Kees Cook To: "Martin K . Petersen" Cc: Kees Cook , Hannes Reinecke , "James E.J. Bottomley" , "Gustavo A. R. Silva" , Bradley Grove , Artur Paszkiewicz , linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH 3/3] scsi: isci: Use correctly sized target buffer for memcpy() Date: Fri, 28 May 2021 11:13:37 -0700 Message-Id: <20210528181337.792268-4-keescook@chromium.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210528181337.792268-1-keescook@chromium.org> References: <20210528181337.792268-1-keescook@chromium.org> MIME-Version: 1.0 X-Patch-Hashes: v=1; h=sha256; g=62b6a772dcc28a3c942828f5b8f7820ee6d3a41f; i=YaeUnfBq3TJQDjDDQLTzHyZVVP6D3nm5nxLM0EpXtRA=; m=ctjrtOVcMtkveReIPPzBsDxfD/jI9YKdALG3fA7QedE=; p=3kYPPaGRNOcMgxn+oYl2l/LriCur9INYsJLjiNU5VNI= X-Patch-Sig: m=pgp; i=keescook@chromium.org; s=0x0x8972F4DFDC6DC026; b=iQIzBAABCgAdFiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmCxMtAACgkQiXL039xtwCZbHxAAhEo sXvA3Z4idNWsm6GyioGcjMQaWDbmW26hmGnFs3/evp3/s2LzULDQ9oYbjBZV5nFM69+nk7pvUMH4Z PbUr5phF7psaj/IF2tsE/J2DyuPnGATxV/9EeBHZdebDS1LAkpmMJQvb810y2bfiqq7zQRXml0erN j8LmuWaES5kiIO0jKBQskL1qBd1eJ+iSDj3EsW6xI7FPpHF6Jb8+hSgjcs6fM+WbI90Y2mxr+zlHb PAuhV+6i3HjVBEwIIVl0Wqm2m8xJEQJbD01mu0DB8y25QQlpBnPwvViurDDKdDnKfpnKR5zxXGGFw Ji9G4OiYP2RDaAVRbKBFOkHKr2BHWGssqcUoC52B+9krw3iAk/OYqQC1aX5dZivSVhoxbYeYUWDBU 7ro14x8WoYuEYUEoM3iGisb027eDktUbz34YA2aOdEO/KpIoMpIwMREmjQgVMbzA6mqzIhqgWaHTf r24DWjL5keQsYfJTu47AGMcrl40Q7U6kvXxYYPPqv87wrZBptj4MF9QlJiIfzB2VquFIiYKlf0d1V yzT94zTBjQECveM1CnVy/Yxj7zbjy6QGAduMN5qLnkP0GQtHpvQh8beMXVX9ZXe6hrMRaz8WZvH5J XrqaQ/KQrNIrwQj5lWHjFg6nVAeY2LqLd8FMhzIk9px3tH6W6Q7AcDJGWbJEDods= Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memcpy(), avoid intentionally writing across neighboring array fields. Switch from rsp_ui to resp_buf, since resp_ui isn't SSP_RESP_IU_MAX_SIZE bytes in length. This avoids future compile-time warnings. Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva --- drivers/scsi/isci/task.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 62062ed6cd9a..eeaec26ac324 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -709,8 +709,8 @@ isci_task_request_complete(struct isci_host *ihost, tmf->status = completion_status; if (tmf->proto == SAS_PROTOCOL_SSP) { - memcpy(&tmf->resp.resp_iu, - &ireq->ssp.rsp, + memcpy(tmf->resp.rsp_buf, + ireq->ssp.rsp_buf, SSP_RESP_IU_MAX_SIZE); } else if (tmf->proto == SAS_PROTOCOL_SATA) { memcpy(&tmf->resp.d2h_fis,