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[198.0.35.241]) by smtp.gmail.com with ESMTPSA id d18-20020aa78692000000b00690fb385ea9sm15316956pfo.47.2023.09.29.11.04.33 (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 , Leon Romanovsky , linux-rdma@vger.kernel.org, Dennis Dalessandro , =?UTF-8?q?H=C3=A5kon=20Bugge?= , Avihai Horon , Anand Khoje , Mark Bloch , Christian Benvenuti , Nelson Escobar , Bernard Metzler , Bart Van Assche , "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 6/7] IB/mthca: Annotate struct mthca_icm_table with __counted_by Date: Fri, 29 Sep 2023 11:04:29 -0700 Message-Id: <20230929180431.3005464-6-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=1251; i=keescook@chromium.org; h=from:subject; bh=KnzErPDnGsoACiNJdVcsN/BX+MW+GH0rlXVaL/E2pIg=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBlFxGudlYNxBZwxaAdfN5vXxcaqFfVqmj7dgAXy KxCK6A4NgOJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZRcRrgAKCRCJcvTf3G3A Jq2fD/wOjmJ/GTNcAOHMWxIkPbGB6y5ReI6NRHk1MISbwnUZHxFPl3cbxT4uBJ/tSFMWvYBIaZd CHF5KasHHeSkYcZgmCwOmDN1uWLSey/4j8PDvrpfKYLZ6trEcfgkT79P1w8JSgXNi/O8mBA7P3b 7skNWfNzTtAOq3D9GCfGkKoa7SOuU+Zs+g2so6pg3TInolHbr36AlerV403JYrGfIAQROPlltvf 6HbSLVByZEh4E3MlUrYKQhxmGo350//eAiVrjrpgj8zp6ASrjFLr5MSG5EZ1K1SOUhb1z1M710M KCxJhPfcH804qdRPlcPegKvBN3JwbexhAiuJUv81lEL8aIud2X5tFi8lJZfHbAtREW3ZALi+1XC qsi6RyjGH/EaSX65t5UCRLFRRnLK1Fu1L0ad+ny7oCoS+zPSFELwsvSsgeO1Ay3V9M3VM/t6xi9 nPKdHSmc8EFPNM4xPJRu584TvMccInO4cFOq4JyjHaWZ9NX3EalXvkRQA6TUx4zo+AD2xJeYXb2 lQWAJnl0LZCQ42huxY9W+Jj0X6J9hT32sjj6XnQGW65WPWCcGRBrEUoubExTgbb5eFqErnOwKcA R/RCcDiXvP+N2bi7MXqQ+DBgsFWZ4P1MaCRmEolelIiFmKGq3vm8m7RdjYnD9qmODro0EDfFQCR iOTFHqonxskMATQ== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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 mthca_icm_table. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/cou= nted_by.cocci Cc: Jason Gunthorpe Cc: Leon Romanovsky Cc: linux-rdma@vger.kernel.org Signed-off-by: Kees Cook --- drivers/infiniband/hw/mthca/mthca_memfree.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.h b/drivers/infiniba= nd/hw/mthca/mthca_memfree.h index f9a2e65e2ff5..61d5bbba293a 100644 --- a/drivers/infiniband/hw/mthca/mthca_memfree.h +++ b/drivers/infiniband/hw/mthca/mthca_memfree.h @@ -68,7 +68,7 @@ struct mthca_icm_table { int lowmem; int coherent; struct mutex mutex; - struct mthca_icm *icm[]; + struct mthca_icm *icm[] __counted_by(num_icm); }; =20 struct mthca_icm_iter { --=20 2.34.1