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[198.0.35.241]) by smtp.gmail.com with ESMTPSA id y10-20020a62b50a000000b0064fd4a6b306sm3460263pfe.76.2023.09.22.10.32.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Sep 2023 10:32:19 -0700 (PDT) From: Kees Cook To: David Airlie Cc: Kees Cook , Alex Deucher , =?utf-8?q?Christian_K=C3=B6nig?= , "Pan, Xinhui" , Daniel Vetter , Hawking Zhang , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Emma Anholt , Evan Quan , Xiaojian Du , Huang Rui , Kevin Wang , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , Chris Wilson , John Harrison , Andi Shyti , Matthew Brost , Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , Marijn Suijten , Bjorn Andersson , Ben Skeggs , Karol Herbst , Lyude Paul , Maxime Ripard , David Airlie , Gerd Hoffmann , Gurchetan Singh , Chia-I Wu , Zack Rusin , VMware Graphics Reviewers , Melissa Wen , Nathan Chancellor , Nick Desaulniers , Tom Rix , Le Ma , Lijo Lazar , Yifan Zhang , Prike Liang , Lang Yu , Tejas Upadhyay , Nirmoy Das , Andrzej Hajda , Neil Armstrong , Kuogee Hsieh , linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, nouveau@lists.freedesktop.org, virtualization@lists.linux-foundation.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org Subject: [PATCH 2/9] drm/amdgpu/discovery: Annotate struct ip_hw_instance with __counted_by Date: Fri, 22 Sep 2023 10:32:07 -0700 Message-Id: <20230922173216.3823169-2-keescook@chromium.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230922173110.work.084-kees@kernel.org> References: <20230922173110.work.084-kees@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1428; i=keescook@chromium.org; h=from:subject; bh=i2UpbGfuADbvlbxlhkLDZa/xyj6FED75tdnO2fZlmjo=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBlDc+dEehHl9nbm4bhCFwpbMmpO3Xxql5kFxhRj Diayf24WdaJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZQ3PnQAKCRCJcvTf3G3A JvkkEACyRaaPJcAJJrT69OHPNJ7Sh8M7AKH2fzwSzceuPqxB6RysYYS6VR2iPdaDZg9zSS+vTbb fL60uv9o1ah81G8VJPhZppP9CtgmmA8a42Bpbs53luiTn/LGzycDXWPETOIgJGNsrJMgTFQyPMo 241VVShLmM8kxtLnJkLOnDZEqzjh4lSZG5ygNcH9YpR0LH3S9yhYSaBm0oamf3UpID1Xs/g89RE 2GjQlWgZzPdM7WCNcNNAIhK00fTWSD5DmnFGm50TziH8XWc8eGZZ2VknCk1GbO1UtJO7OW7lysZ dzxYyw9Eifo8NVwr14wp43rm0towIlCQv++/9z7OLpwblt6E0YNRNpTjv9DQV+xS5euSf4ETfjV IJ9vdSq6WjnidZkTBKdhROCuszJxRQ9b3HqXm169h7IYEdXvDeMvTQ2xgv9UwiFYpPlLImhrCYh r/oOkRSzfxf22LJvTsqX/WXIRpOCLm1gQa2ApJjyfzEXAegAaVehjC7856bxlgo+pE5tqm7PAvm JLb5hweD/O8L+7Tf7ij2oggZ9HmU2VGBIGVs0/EP7R6GeKLWO5KBBVa3/aADP01hJ2ZTfyjJsLl NqBiuVwLDZSWs6x18B1633XvJJtLwLIUg5eA8U/N4Q1qXUMezt3ySBuq4TSxO56Xod8iBUwzCfw TsBbpN+0JCLa/Ag== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct ip_hw_instance. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Alex Deucher Cc: "Christian König" Cc: "Pan, Xinhui" Cc: David Airlie Cc: Daniel Vetter Cc: Hawking Zhang Cc: amd-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: Kees Cook Acked-by: Alex Deucher Reviewed-by: Gustavo A. R. Silva --- drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c index d1bc7b212520..be4c97a3d7bf 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c @@ -662,7 +662,7 @@ struct ip_hw_instance { u8 harvest; int num_base_addresses; - u32 base_addr[]; + u32 base_addr[] __counted_by(num_base_addresses); }; struct ip_hw_id {