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=-19.5 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, URIBL_BLOCKED,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 C894DC4338F for ; Tue, 27 Jul 2021 21:01:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AEF33603E9 for ; Tue, 27 Jul 2021 21:01:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234269AbhG0VBV (ORCPT ); Tue, 27 Jul 2021 17:01:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54050 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232277AbhG0U7F (ORCPT ); Tue, 27 Jul 2021 16:59:05 -0400 Received: from mail-pj1-x1035.google.com (mail-pj1-x1035.google.com [IPv6:2607:f8b0:4864:20::1035]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C92DEC061757 for ; Tue, 27 Jul 2021 13:59:03 -0700 (PDT) Received: by mail-pj1-x1035.google.com with SMTP id a4-20020a17090aa504b0290176a0d2b67aso6632081pjq.2 for ; Tue, 27 Jul 2021 13:59:03 -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=c3ykowIwDTRKsInbKYf/ek7DP95JkPgh9oE6DtLLi+A=; b=Kp+U9AytVp9BwbsLQj5AYOpg8DezjsG5/creX/t5fYRDEs7tszMAJwrDdgQwhZq/SR pfMuBhqfFlPx2fMK05Ry9tqtfPSV8v4DUZPulqrs+9s8Twz/vFSkAn2NBw8N2WvhGIZs I5L0NhknTsbo7S17qVe98S4vL28QINN1K21ew= 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=c3ykowIwDTRKsInbKYf/ek7DP95JkPgh9oE6DtLLi+A=; b=aomScmPtVQ2qZ65J69M4p6uqRepM7Jag3asR7mkiL5AIr8j4kXGIvn34MREFMWhAXS la53lfAI4g+dAqbVnz9xYtxee4JLnZkMuAUgkRkAKhsBgab3DEpVVHguZ9tpTQTLJ4Sl 7N6TynH5YfCKbRU+RsAyL2Z0OtIs4XifYA981QZIvg3+7MA1w13nJq0q9eRjTNB9fL/m LPx5rubErVmty85tu5fiYF8oMQQenFch+ZqUV2ZFnUV3phlcnji8YnHCFDED+EvHNjmT nmK6ham3RQjGtLw4p7l3c4+lXBgVzirNI1jgIoSMgUgrnf1YHc9ZJrOlojqwLnPWfex3 eG7g== X-Gm-Message-State: AOAM53037UwdBdo8Y6ZAYAd1ZLNYXSvnALkE9rUccFBLw9X5lHxkB2rG oKHNb0E1NfQw1qkcaRBgjD9F2kiQ6QBkVjUp X-Google-Smtp-Source: ABdhPJwNHFDf+F+gUxt2yA1m1JnQqLEbNlnBfRoIoqlBir+Zo4XdTRlv/GVLC3WzAXlOzz8ixT2dzQ== X-Received: by 2002:a65:4508:: with SMTP id n8mr25560399pgq.407.1627419542777; Tue, 27 Jul 2021 13:59:02 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id g3sm4480039pfi.197.2021.07.27.13.59.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Jul 2021 13:59:02 -0700 (PDT) From: Kees Cook To: linux-hardening@vger.kernel.org Cc: Kees Cook , "Gustavo A. R. Silva" , Keith Packard , Greg Kroah-Hartman , Andrew Morton , linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-staging@lists.linux.dev, linux-block@vger.kernel.org, linux-kbuild@vger.kernel.org, clang-built-linux@googlegroups.com Subject: [PATCH 03/64] rpmsg: glink: Replace strncpy() with strscpy_pad() Date: Tue, 27 Jul 2021 13:57:54 -0700 Message-Id: <20210727205855.411487-4-keescook@chromium.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727205855.411487-1-keescook@chromium.org> References: <20210727205855.411487-1-keescook@chromium.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1814; h=from:subject; bh=CGejJDIBWoCTMrdLfdYOlKTt2khst8/bmsGsqzGrjiA=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBhAHOAj+vEe7YcbCfgSji3keoTaHrI/ZHofnZ1HVRt kwNnps2JAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCYQBzgAAKCRCJcvTf3G3AJqZUEA CIcBP+l3BbFi7alvKzzPClmhyUHq9Qrd5uMRNKMY9XyV0NR/jnI8CoYhga76FZhbT+mDmv6EqlY2QS rhhfJ44Nv7YuNm8ADcxv6ICsgHYc6ExgMQ4gO83JrsqVUuNebi/HDrFNw7T4Z5c1/UUTlWpIwnqxs7 zwuIgbFRNhuxTlpAncpl+dPIlkv40KWXaiqTIR/FuXteCb0rHpAWPYMrJ3tXcDqBwzHtpYfAYbneQq NIhvmdPjcFi5GnKQBm9eTRP7/Xcjg+8Ve3GeZadiIqC14fSgnMgtIahIDXLyAD4WuxdSRQwG+lbGXR 16M20bodkEsvyiJfNZJQdqgyHsVt/eXqpuH1om13iF7+wTit6p8gEUfPMy/V38FyOTgjikr8am4k7A 23f/4W0+nt6mLLlDMXQtGC7TmA97UCqRJ+dNmiQMLuRljr6uD1DWUTS75HLcUjcWkIU1fBUYUi0DWk P/zazmIkeRAnFcJGwZf3zUXOErBqGPmnAav3Bok+zgtGP6JjxVaiFcJN+Dq/iIMuZ8gp1+kmma1GMv m/hLrzzRYpUJQyo2xNUAyVn6zzmEqA+jINb6SqBOUVg3sNfzZTRQkVA7NvmZp+LplR7Jw/n/+91q/6 pIUu/YH+PA+X/eemAshAw2isLrLbFZdRioKXBvLqtjcD2yGkNeO8ROQmebfA== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The use of strncpy() is considered deprecated for NUL-terminated strings[1]. Replace strncpy() with strscpy_pad() (as it seems this case expects the NUL padding to fill the allocation following the flexible array). This additionally silences a warning seen when building under -Warray-bounds: ./include/linux/fortify-string.h:38:30: warning: '__builtin_strncpy' offset 24 from the object at '__mptr' is out of the bounds of referenced subobject 'data' with type 'u8[]' {aka 'unsigned char[]'} at offset 24 [-Warray-bounds] 38 | #define __underlying_strncpy __builtin_strncpy | ^ ./include/linux/fortify-string.h:50:9: note: in expansion of macro '__underlying_strncpy' 50 | return __underlying_strncpy(p, q, size); | ^~~~~~~~~~~~~~~~~~~~ drivers/rpmsg/qcom_glink_native.c: In function 'qcom_glink_work': drivers/rpmsg/qcom_glink_native.c:36:5: note: subobject 'data' declared here 36 | u8 data[]; | ^~~~ [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings Signed-off-by: Kees Cook --- drivers/rpmsg/qcom_glink_native.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c index 05533c71b10e..c7b9de655080 100644 --- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -1440,7 +1440,7 @@ static int qcom_glink_rx_open(struct qcom_glink *glink, unsigned int rcid, } rpdev->ept = &channel->ept; - strncpy(rpdev->id.name, name, RPMSG_NAME_SIZE); + strscpy_pad(rpdev->id.name, name, RPMSG_NAME_SIZE); rpdev->src = RPMSG_ADDR_ANY; rpdev->dst = RPMSG_ADDR_ANY; rpdev->ops = &glink_device_ops; -- 2.30.2 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=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 D63BAC4320A for ; Tue, 27 Jul 2021 20:59:05 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A657A60F6C for ; Tue, 27 Jul 2021 20:59:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org A657A60F6C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 07A466E2DC; Tue, 27 Jul 2021 20:59:05 +0000 (UTC) Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by gabe.freedesktop.org (Postfix) with ESMTPS id 20AAD6E111 for ; Tue, 27 Jul 2021 20:59:03 +0000 (UTC) Received: by mail-pj1-x102f.google.com with SMTP id m1so1827393pjv.2 for ; Tue, 27 Jul 2021 13:59:03 -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=c3ykowIwDTRKsInbKYf/ek7DP95JkPgh9oE6DtLLi+A=; b=Kp+U9AytVp9BwbsLQj5AYOpg8DezjsG5/creX/t5fYRDEs7tszMAJwrDdgQwhZq/SR pfMuBhqfFlPx2fMK05Ry9tqtfPSV8v4DUZPulqrs+9s8Twz/vFSkAn2NBw8N2WvhGIZs I5L0NhknTsbo7S17qVe98S4vL28QINN1K21ew= 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=c3ykowIwDTRKsInbKYf/ek7DP95JkPgh9oE6DtLLi+A=; b=fhyJj1dDxvQ08g4uNtlnEW+vqf51QkGzYJKu126sSWhcn433OcSqHo76NWZMzOHRo9 rYKXxrIvAYZ4Q/GgiI6Wi3NwTUvrhYCZ/ycAFk9P8WCK37aYWfcggPfUlIjviFhqPsRr tfpUXbgRIlLf3iPCGBV8wBNRTedxlkgKHDPswrugiml2uZdFpEgtGvo3uLwtWdM2UePo OQW2wMnBJGhVgToTEkhb3CJ/zUQ2zBjco9p5vrByx2wkz7TdBMsyS9dsHMJhVSIBDrGo 4fwqa4g220KTvlqVH2CZsunAh2E26Padx3s4x3sXvuSdUfxnR+wy3t0HBnFb569WURUQ zUTw== X-Gm-Message-State: AOAM531VDksGIueJ68AtF9//fnPAd1yJPCShfQbdbWnf76xhmXLDJvSc N1kPly0tK+l9SkrkvNg91PqSaw== X-Google-Smtp-Source: ABdhPJwNHFDf+F+gUxt2yA1m1JnQqLEbNlnBfRoIoqlBir+Zo4XdTRlv/GVLC3WzAXlOzz8ixT2dzQ== X-Received: by 2002:a65:4508:: with SMTP id n8mr25560399pgq.407.1627419542777; Tue, 27 Jul 2021 13:59:02 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id g3sm4480039pfi.197.2021.07.27.13.59.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Jul 2021 13:59:02 -0700 (PDT) From: Kees Cook To: linux-hardening@vger.kernel.org Subject: [PATCH 03/64] rpmsg: glink: Replace strncpy() with strscpy_pad() Date: Tue, 27 Jul 2021 13:57:54 -0700 Message-Id: <20210727205855.411487-4-keescook@chromium.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727205855.411487-1-keescook@chromium.org> References: <20210727205855.411487-1-keescook@chromium.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1814; h=from:subject; bh=CGejJDIBWoCTMrdLfdYOlKTt2khst8/bmsGsqzGrjiA=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBhAHOAj+vEe7YcbCfgSji3keoTaHrI/ZHofnZ1HVRt kwNnps2JAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCYQBzgAAKCRCJcvTf3G3AJqZUEA CIcBP+l3BbFi7alvKzzPClmhyUHq9Qrd5uMRNKMY9XyV0NR/jnI8CoYhga76FZhbT+mDmv6EqlY2QS rhhfJ44Nv7YuNm8ADcxv6ICsgHYc6ExgMQ4gO83JrsqVUuNebi/HDrFNw7T4Z5c1/UUTlWpIwnqxs7 zwuIgbFRNhuxTlpAncpl+dPIlkv40KWXaiqTIR/FuXteCb0rHpAWPYMrJ3tXcDqBwzHtpYfAYbneQq NIhvmdPjcFi5GnKQBm9eTRP7/Xcjg+8Ve3GeZadiIqC14fSgnMgtIahIDXLyAD4WuxdSRQwG+lbGXR 16M20bodkEsvyiJfNZJQdqgyHsVt/eXqpuH1om13iF7+wTit6p8gEUfPMy/V38FyOTgjikr8am4k7A 23f/4W0+nt6mLLlDMXQtGC7TmA97UCqRJ+dNmiQMLuRljr6uD1DWUTS75HLcUjcWkIU1fBUYUi0DWk P/zazmIkeRAnFcJGwZf3zUXOErBqGPmnAav3Bok+zgtGP6JjxVaiFcJN+Dq/iIMuZ8gp1+kmma1GMv m/hLrzzRYpUJQyo2xNUAyVn6zzmEqA+jINb6SqBOUVg3sNfzZTRQkVA7NvmZp+LplR7Jw/n/+91q/6 pIUu/YH+PA+X/eemAshAw2isLrLbFZdRioKXBvLqtjcD2yGkNeO8ROQmebfA== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kees Cook , linux-kbuild@vger.kernel.org, Greg Kroah-Hartman , linux-staging@lists.linux.dev, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, "Gustavo A. R. Silva" , linux-block@vger.kernel.org, clang-built-linux@googlegroups.com, Keith Packard , netdev@vger.kernel.org, Andrew Morton Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The use of strncpy() is considered deprecated for NUL-terminated strings[1]. Replace strncpy() with strscpy_pad() (as it seems this case expects the NUL padding to fill the allocation following the flexible array). This additionally silences a warning seen when building under -Warray-bounds: ./include/linux/fortify-string.h:38:30: warning: '__builtin_strncpy' offset 24 from the object at '__mptr' is out of the bounds of referenced subobject 'data' with type 'u8[]' {aka 'unsigned char[]'} at offset 24 [-Warray-bounds] 38 | #define __underlying_strncpy __builtin_strncpy | ^ ./include/linux/fortify-string.h:50:9: note: in expansion of macro '__underlying_strncpy' 50 | return __underlying_strncpy(p, q, size); | ^~~~~~~~~~~~~~~~~~~~ drivers/rpmsg/qcom_glink_native.c: In function 'qcom_glink_work': drivers/rpmsg/qcom_glink_native.c:36:5: note: subobject 'data' declared here 36 | u8 data[]; | ^~~~ [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings Signed-off-by: Kees Cook --- drivers/rpmsg/qcom_glink_native.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c index 05533c71b10e..c7b9de655080 100644 --- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -1440,7 +1440,7 @@ static int qcom_glink_rx_open(struct qcom_glink *glink, unsigned int rcid, } rpdev->ept = &channel->ept; - strncpy(rpdev->id.name, name, RPMSG_NAME_SIZE); + strscpy_pad(rpdev->id.name, name, RPMSG_NAME_SIZE); rpdev->src = RPMSG_ADDR_ANY; rpdev->dst = RPMSG_ADDR_ANY; rpdev->ops = &glink_device_ops; -- 2.30.2