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[198.0.35.241]) by smtp.gmail.com with ESMTPSA id c16-20020aa78e10000000b0068c61848785sm15228538pfr.208.2023.09.29.11.04.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Sep 2023 11:04:34 -0700 (PDT) From: Kees Cook To: Jason Gunthorpe Cc: Kees Cook , Bart Van Assche , Leon Romanovsky , linux-rdma@vger.kernel.org, Dennis Dalessandro , =?utf-8?q?H?= =?utf-8?q?=C3=A5kon_Bugge?= , Avihai Horon , Anand Khoje , Mark Bloch , Christian Benvenuti , Nelson Escobar , Bernard Metzler , "Gustavo A. R. Silva" , Nathan Chancellor , Nick Desaulniers , Tom Rix , Patrisious Haddad , Chuck Lever , Tom Talpey , wangjianli , linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, llvm@lists.linux.dev Subject: [PATCH 5/7] IB/srp: Annotate struct srp_fr_pool with __counted_by Date: Fri, 29 Sep 2023 11:04:28 -0700 Message-Id: <20230929180431.3005464-5-keescook@chromium.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230929180305.work.590-kees@kernel.org> References: <20230929180305.work.590-kees@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1220; i=keescook@chromium.org; h=from:subject; bh=f7YIXZ1Qz/PkvmeFE/JHjleuWcRLUOMOaQc0DRTvzX0=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBlFxGu9/IB5ROJ/iD1IoxO8XdZ0HuofI5lXB9aL 4bAV2SnX/yJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZRcRrgAKCRCJcvTf3G3A JoxWD/0ZjY+XrVB7gRnT53mKtziWVn+VsfedclKqQTgWGlk9obHRRC5h+bABdwKSf2M/x0wCQFH mVEbvAQDpHgR+Dff6jNIv+1QcHHO5DEpLiYDrFKCu1/+V+cLcW3uIl03j4j6xaJezo6eOsw7zsV qHzukxETpc8mlb33IZR04S4xPeQwpdejzndnDFde/ViDV8t7iidPzE4mWvdYon1+2aPCgI7eBj7 bDR2OEb2yciSxCKdenFa3rByvJjqQPe6KHlxylQVLI29zQl5R+r/Sj4Z8gKsqvOBTRFFL8iQkdf TGtYluwh/Ok9tXHWmhOgxLEGkSuf3GZXYI+1zMXmpbcd1EOuD6WN0sZs5M2+FWQS/ZkTn7pzuR3 Qqc3lS05bvXdyE+BCBVWVGygCQvfDP5e2QbVTnBFC5yP9AzrhU9jErH+oUyQu+gLRyZGKGudIo6 ZhmGK2XtDlfZi0gaOKPQBdxkczkTLGAZ5NOKJQ+3k3WAfZ/7Xgg7NYu7Jdp2BudK2CvN5uRrond /rlpeDTxx2K62/qlY2LI7OmJWB7Px2i5bSW5g77AzDdVNvqzIRyg4mgIKNvjaYTCoeRWVCGCb9X cfBJppmtpmPQhtwSnT8SALM8cw5PP2q7Rci6HUL9dTUXHDHKCIQW1muP+rHVMhXbvap6GSo1vMt 1AjoxAt0tusmfDA== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@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 srp_fr_pool. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Bart Van Assche Cc: Jason Gunthorpe Cc: Leon Romanovsky Cc: linux-rdma@vger.kernel.org Signed-off-by: Kees Cook --- drivers/infiniband/ulp/srp/ib_srp.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h index 5d94db453df3..349576ff3845 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.h +++ b/drivers/infiniband/ulp/srp/ib_srp.h @@ -306,7 +306,7 @@ struct srp_fr_pool { int max_page_list_len; spinlock_t lock; struct list_head free_list; - struct srp_fr_desc desc[]; + struct srp_fr_desc desc[] __counted_by(size); }; /**