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[198.0.35.241]) by smtp.gmail.com with ESMTPSA id e3-20020a170902b78300b001bdd68b3f4bsm3751544pls.295.2023.09.22.10.42.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Sep 2023 10:42:13 -0700 (PDT) From: Kees Cook To: David Airlie Date: Fri, 22 Sep 2023 10:32:14 -0700 Message-Id: <20230922173216.3823169-9-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=1250; i=keescook@chromium.org; h=from:subject; bh=SnNIrp1FHi4lB0nFNYirvVw5/7/jvEw6i/lP/RJRA6A=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBlDc+e3L4G5PZF7SaBMxHwj62ZCFc4FzMHTqhT9 tfDr8MgF6uJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZQ3PngAKCRCJcvTf3G3A JnkWEACXtjUq16fS873Hx8yyB8djpvoH6XVS+/OuSPCo2t7GIoIpy1zBkPiH2Ei14JMNlHdMGGy 8yOKrl1rGoQOP3jjY04cxJWy1h5uFFHAxW6VGYIBsbbFRIqAXuVC4UKEN+qYZ97MTJmwc0eHVdX Z441sTRctCLNHoMhSAQn6O3TWU2+/QOV8cz2Ls8cuKVLErRruCIa6OzHgGSnhC5Rq1OWXZyJNiQ 1aWVoVn67WL0VqIe3RW1cZvMnlWNTbgZP1DUee1eLb7MmfT7XMLkW6Jz/8rTfAeSUSsLhxKbIcO ZpXIWrrfcefYP4Dz3BMU6z9OLUAHdpdLEnnvQyDviUPLmbRyS5mdJpKrC9XT7FTANcayQSTonRu M12CaA8ASNf3ak1iu7o4DhTMZeHyb2Wpz2kwj4Nyg6YzYpRNC2gtRkBRdxIJn60r90kd27Yxl7Y Hb+w/DnzIvunJlaIiKWIEE9lJfyZWF2fgi9gcXtI26HlMj/Jn9jmdHnLwh96IqxloMmooRdvULL NK01ICP7mB/XJ36KSBZv5ss3B5LUV9OwyC4T2xpvqKmG/iSr65/EUsg0AYInGQ5v0STKkN7TYFV abYOWvuq0o/pltuNX+Gpbsn9+VvBaxhF2CeSHtOP8ARhgkctRhQJ2+OhqQ35i3SIQBBSkeCOxlL 2y59f7fhlJo6LCg== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Subject: [Intel-gfx] [PATCH 9/9] drm/v3d: Annotate struct v3d_perfmon with __counted_by X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Emma Anholt , Tom Rix , llvm@lists.linux.dev, dri-devel@lists.freedesktop.org, Chris Wilson , Prike Liang , Huang Rui , Gerd Hoffmann , Andrzej Hajda , Marijn Suijten , Karol Herbst , Neil Armstrong , amd-gfx@lists.freedesktop.org, Kuogee Hsieh , Nathan Chancellor , VMware Graphics Reviewers , Ben Skeggs , nouveau@lists.freedesktop.org, David Airlie , virtualization@lists.linux-foundation.org, Chia-I Wu , linux-hardening@vger.kernel.org, Lijo Lazar , Kees Cook , Yifan Zhang , linux-arm-msm@vger.kernel.org, intel-gfx@lists.freedesktop.org, Kevin Wang , Abhinav Kumar , Melissa Wen , Dmitry Baryshkov , Gurchetan Singh , Maxime Ripard , Rodrigo Vivi , Evan Quan , Xiaojian Du , Le Ma , freedreno@lists.freedesktop.org, Bjorn Andersson , "Pan, Xinhui" , Nick Desaulniers , linux-kernel@vger.kernel.org, Zack Rusin , Daniel Vetter , Alex Deucher , Nirmoy Das , Lang Yu , =?utf-8?q?Christian_K=C3=B6nig?= , Hawking Zhang Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" 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 v3d_perfmon. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Emma Anholt Cc: Melissa Wen Cc: David Airlie Cc: Daniel Vetter Cc: dri-devel@lists.freedesktop.org Signed-off-by: Kees Cook Reviewed-by: Maíra Canal --- drivers/gpu/drm/v3d/v3d_drv.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index 7f664a4b2a75..106454f28956 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.h +++ b/drivers/gpu/drm/v3d/v3d_drv.h @@ -59,7 +59,7 @@ struct v3d_perfmon { * values can't be reset, but you can fake a reset by * destroying the perfmon and creating a new one. */ - u64 values[]; + u64 values[] __counted_by(ncounters); }; struct v3d_dev {