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[198.0.35.241]) by smtp.gmail.com with ESMTPSA id l16-20020a170903245000b001bdb0483e65sm3738592pls.265.2023.09.22.10.32.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Sep 2023 10:32:22 -0700 (PDT) From: Kees Cook To: David Airlie Cc: Kees Cook , Ben Skeggs , Karol Herbst , Lyude Paul , Daniel Vetter , dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org, Emma Anholt , Evan Quan , Alex Deucher , =?utf-8?q?Christian_K=C3=B6nig?= , "Pan, Xinhui" , Xiaojian Du , Huang Rui , Kevin Wang , Hawking Zhang , 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 , 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, amd-gfx@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, virtualization@lists.linux-foundation.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org Subject: [PATCH 5/9] drm/nouveau/pm: Annotate struct nvkm_perfdom with __counted_by Date: Fri, 22 Sep 2023 10:32:10 -0700 Message-Id: <20230922173216.3823169-5-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=1371; i=keescook@chromium.org; h=from:subject; bh=IPCNKuct38YwTzB2zIOXZz855pzU163uvmhflCBSQWQ=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBlDc+ePLJ5Y9ji0102KrPkzSXaeWKfcfISds5DF aJ14tx1Y4aJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZQ3PngAKCRCJcvTf3G3A JtXrD/0RXHf3wSRStY2vqlZH/um0jQPMLbKbehlFgssNmiWNKLGOpr9br8S3vwu1QvHGz1HXrqy ek4gD5gpWq9HZI5TJ2S0ATi0PCNLJBhXIuhc34RvAQY4zFQ3xDP1+U9nxWirglYoYpY8M62/YSo B0HX0gFwkDnSKjEiTZRLqLNrHJ2uDlJPrCaCz4/eG9EdAXU5odsdQXdC9MXbzm7VxjwSRLgFwVK GHLJXusf7Ruisahsoa0m9dY0LDoKPcUPSm6nZyyulGzjj8O7nZD5mkW5LmE3acjay9ccGO6xVQV CEmQ8fU5KxWIXh39kd9vqnEzf3cWZgF/XottaJZSmQfT1Ch1cecAsaQT61aXa0XgwnSoBRR1Adm pc0Dq6V8Dq2SSnL3qijLYnz0JJZIxQ2Vea1R0y83xCcXxYu29UWHu78xEIII3D5O3DQH7LTIFRk 64XrJvEWliQkDVEjTU9AAQ1DmI0+XI32xp59hVd2qxbLXVzaJbyW96YRrwk0Z8tybyQKuBGbl+N UjYgjPXkrQlaLwdvsSB5hxsSwDYFtZYt+C8rKOWeJuWm6hWS/WNw8to6mNAPP2UcQkbXemA4N1n LDw+BMjjOgfNdMdxGQwv3iqnBs5Ov3VImnlMxKxr+X4ixt4v0594/VlXa7PXU40u430EsrX9Bgl 2ggHJiZsUawsmBg== 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 nvkm_perfdom. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Ben Skeggs Cc: Karol Herbst Cc: Lyude Paul Cc: David Airlie Cc: Daniel Vetter Cc: dri-devel@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Signed-off-by: Kees Cook Reviewed-by: Lyude Paul Reviewed-by: Gustavo A. R. Silva --- drivers/gpu/drm/nouveau/nvkm/engine/pm/priv.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/pm/priv.h b/drivers/gpu/drm/nouveau/nvkm/engine/pm/priv.h index 6ae25d3e7f45..c011227f7052 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/pm/priv.h +++ b/drivers/gpu/drm/nouveau/nvkm/engine/pm/priv.h @@ -82,7 +82,7 @@ struct nvkm_perfdom { u8 mode; u32 clk; u16 signal_nr; - struct nvkm_perfsig signal[]; + struct nvkm_perfsig signal[] __counted_by(signal_nr); }; struct nvkm_funcdom {