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[198.0.35.241]) by smtp.gmail.com with ESMTPSA id f30-20020a63755e000000b005777a50c14csm1948843pgn.0.2023.10.03.16.18.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Oct 2023 16:18:53 -0700 (PDT) From: Kees Cook To: Simon Horman Cc: Kees Cook , Simon Horman , Jakub Kicinski , "David S. Miller" , Eric Dumazet , Paolo Abeni , Yinjun Zhang , Leon Romanovsky , Yu Xiao , Sixiang Chen , oss-drivers@corigine.com, netdev@vger.kernel.org, Louis Peens , "Gustavo A. R. Silva" , Nathan Chancellor , Nick Desaulniers , Tom Rix , linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, llvm@lists.linux.dev Subject: [PATCH] nfp: nsp: Annotate struct nfp_eth_table with __counted_by Date: Tue, 3 Oct 2023 16:18:51 -0700 Message-Id: <20231003231850.work.335-kees@kernel.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1591; i=keescook@chromium.org; h=from:subject:message-id; bh=kyIpUckdxhoPI7wg/1i7aDtbMCbDJmvf94yOHZ/LMos=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBlHKFaqeDk2zRE3th7z8cYZ1dn2zrPeWsHfJfCM Cuy93rmm6WJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZRyhWgAKCRCJcvTf3G3A JtivD/921uPevWfkg8Iip9YGwRkTHQCT/UJ598wTfO+mlFZfgD8SEx3AvBWVtFAqDbrflleiDp7 R58oBrQcmRqVIpJKsm718xxHUhMOtY3JGgUQYiv6bAN4lISc2z5Ju2QzD1IrXquWHev+ayiwS7n 7KZVM+Gd+Sr/EQvetaHmNqzDWdIBpT5mdQLxQmX4+hCsrGzMAXlei3f84qoOw9V2e9u+n43W93H Z7rbuFzJIXu4IKLlngEXXY/RFZVr88AIIkpwz8/OLLEnYTJ7SkChFnM3/yMejx9Xsp9zCyfF/5w b+riLsgZTZzyAUN4l7+Pgl9Kqq1+xXc6+mV5O0MJ8pdzoA3aiUcTiMZqhJds8Ti0POEk+7pauBr d/n6Dnx+fZtx58xQUgpRvrVLtZkQ8pFgcNr3b3KNXXy3c2zxAv15kOKKK5jHD4/FpOINsE3FVfx SUZS2QHF0QVAWCxGH9+5QJn5SOVWKlzi0AFHyV6bRb0yyRkkp8+8Gj9xDDJMarG0yDVlaW6lPTT oYsKlppQ44FxNQ9UEDX3nZpTULabRuehfovG2KPpb4amory077swEoE6JUbBUf8rm9K09YA8FDk wyXGduO9eqahqe3FfT3xbGGSFV+k4JvfrMZrTP0+Eu5N659fq3paOBy8VsG3ts4pnnXNddDgEGP okULyFU CI3chMuA== 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 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 nfp_eth_table. Cc: Simon Horman Cc: Jakub Kicinski Cc: "David S. Miller" Cc: Eric Dumazet Cc: Paolo Abeni Cc: Yinjun Zhang Cc: Leon Romanovsky Cc: Yu Xiao Cc: Sixiang Chen Cc: oss-drivers@corigine.com Cc: netdev@vger.kernel.org Link: https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/c= ounted_by.cocci [1] Signed-off-by: Kees Cook Acked-by: Louis Peens Reviewed-by: Gustavo A. R. Silva --- drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h b/drivers= /net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h index 6e044ac04917..00264af13b49 100644 --- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h +++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h @@ -241,7 +241,7 @@ struct nfp_eth_table { =20 u64 link_modes_supp[2]; u64 link_modes_ad[2]; - } ports[]; + } ports[] __counted_by(count); }; =20 struct nfp_eth_table *nfp_eth_read_ports(struct nfp_cpp *cpp); --=20 2.34.1