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[198.0.35.241]) by smtp.gmail.com with ESMTPSA id k67-20020a633d46000000b00577bc070c6bsm13985771pga.68.2023.09.29.11.04.33 (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 , Dennis Dalessandro , Leon Romanovsky , linux-rdma@vger.kernel.org, =?utf-8?q?H?= =?utf-8?q?=C3=A5kon_Bugge?= , 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 7/7] IB/hfi1: Annotate struct tid_rb_node with __counted_by Date: Fri, 29 Sep 2023 11:04:30 -0700 Message-Id: <20230929180431.3005464-7-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> Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1296; i=keescook@chromium.org; h=from:subject; bh=5+hginCoO40gXVEhDd2TzT5efPqXVR+knLSWVnfU8ow=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBlFxGuDgcPnSEEDSvhCdq3C2vJgb3qdw/LhpW2x tim/TyUa5iJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZRcRrgAKCRCJcvTf3G3A Jg7CD/9IO6sfIhcdiDAPuO2CKDNVoq4p3SdHoXmM2XBp1YwBoHT7gEwQR4RT3mIzlG0I74nKm73 H1EX/Yd0bkul503BOk+eormeqtpn+hLrIuRDPEbk8HlrZYFYWvVNa8D2yREVfyds3CgOwE6UyXc aSMx//AL8Z/qpDmeqBlbNL3O7OK6ht9K/mK42LORZkAY2hzmq0WV4kXhrC4PlektH2akmXS5DGj wlAO77pgLRGhcEKrZmaPjMsGzh7bZQ8houJ4w45ShKUjDBRQZM88fq4pbM8ImffIF2X0VUTXa8Y 09T4SWVZEMw8sEudVJrENBXRQNVGyCNnhLA7UYvmfVX4tu7PhZOUpUpEQPy3OiRIFRedVNs1DnW NJ4fSKoAyJ70B8mH6FuSf70jLl4QpvpoFrsVzCYqLrYyMd6KLqEp8LdtoN/BR5NTtZVusEHHeuK 6klHggoNRwySEq5Vx0C2HRXgbtytwRw+9wx+62nvwql58uSwlMWbkRW2pipsMK0VFMf4HrM+DZL plMPJQ5nI6HHBKsq9E9A4u4Q+EXFpmiMlhxgVfHlUWxmDUhKAevh2CY7xXj8qOBqh9CA+6KWM8o EfcCi4Zo4YfCzhn6C6lTC6EHSFNVRp42NhaUyL4yADcXaSwX2WpfvsaYkzZQGYOy7O8AMn4zzEM gPF6o2m6oJt8Efg== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net 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 tid_rb_node. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Dennis Dalessandro Cc: Jason Gunthorpe Cc: Leon Romanovsky Cc: linux-rdma@vger.kernel.org Signed-off-by: Kees Cook --- drivers/infiniband/hw/hfi1/user_exp_rcv.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/hfi1/user_exp_rcv.h b/drivers/infiniband/hw/hfi1/user_exp_rcv.h index b85de9070aee..055726f7c139 100644 --- a/drivers/infiniband/hw/hfi1/user_exp_rcv.h +++ b/drivers/infiniband/hw/hfi1/user_exp_rcv.h @@ -36,7 +36,7 @@ struct tid_rb_node { dma_addr_t dma_addr; bool freed; unsigned int npages; - struct page *pages[]; + struct page *pages[] __counted_by(npages); }; static inline int num_user_pages(unsigned long addr,