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Fri, 09 Feb 2024 17:16:44 -0800 (PST) From: Kees Cook To: Jakub Kicinski Cc: Kees Cook , "David S. Miller" , Eric Dumazet , Paolo Abeni , "Gustavo A. R. Silva" , netdev@vger.kernel.org, linux-hardening@vger.kernel.org, Rasmus Villemoes , Dan Williams , Keith Packard , Miguel Ojeda , Alexey Dobriyan , Dmitry Antipov , Nathan Chancellor , kernel test robot , linux-kernel@vger.kernel.org Subject: [PATCH 2/2] net/ipv4: Annotate imsf_slist_flex with __counted_by(imsf_numsrc) Date: Fri, 9 Feb 2024 17:16:42 -0800 Message-Id: <20240210011643.1706285-2-keescook@chromium.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240210011452.work.985-kees@kernel.org> References: <20240210011452.work.985-kees@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=953; i=keescook@chromium.org; h=from:subject; bh=7XJjEgvqeEf1C270MBQlNS8089wSLDXw7au4fhViZ9k=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBlxs56b/YU9uCWyX1kD51B/7AJ32jX6Ko3rsWCD ItxtYxKnueJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZcbOegAKCRCJcvTf3G3A Jri6EACJUceo9gf6zPJCVHzFHPzJ+cKBEOecAQBjsrUQfNTiy7VZT2/P2C19Wsf3zLYOvxTr22Q mIGdvbjFOPTiZ/J4cH1+l2q7zO5PR/zS/5955PGAaCdIzmp5Z2mero036OEvuYfcfiDT+HHmROK J8RgVZDHh405kaxnoIn/Qe5YdrC+0YmuXd/8fj49EHa2fQSvk/ro5hYF+k+kjYsJLNVic9ssfFc X7ch/slGcLT5b3FIBJD+C1BGZQGppSy+Wv4ySmQKtfvuHqLGKvY/sKsUPthayKuilUe3X/SdXSD PPY0X/CHnKa9btW6GjQPWb7Oa3AwSxJnZQZBaMbTZk96bDwPVFar1ztYAFVaYkZpjSWNk6WDJ75 GH9YiiSZQHY8xV14ykgbRnxyZQULRYTdzUXwuEG8ifkLYkzJCW3TmN4kUEuNzL+kiclRLw1zQqL QMOS4yGsVBOu5cK/LGbDWhFbmxBvmNcw7K35YvzL22UXMNQ9tkpMU3gxRpnqbDl9nUhKmSD8LVZ WcSZuv2omy0/5G2EWB8XBrgtdYivyhS4mjqYoBp1edS83dJrRT/78mvm56jlS/t8Twk63QIsCMk 8TFHRHIo+jlikkTi2+AwcWkbzcqCGvARwro7mke7EUP7UAN0FufGN8XIRMC+ehaX2WZ2BNwnYZp CRIiDME9BkAFXig== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790472732237747549 X-GMAIL-MSGID: 1790472732237747549 The size of the imsf_slist_flex member is determined by imsf_numsrc, so annotate it as such. Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: "Gustavo A. R. Silva" Cc: netdev@vger.kernel.org Cc: linux-hardening@vger.kernel.org Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Acked-by: Jakub Kicinski --- include/uapi/linux/in.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/in.h b/include/uapi/linux/in.h index e682ab628dfa..445f6ae76f1e 100644 --- a/include/uapi/linux/in.h +++ b/include/uapi/linux/in.h @@ -199,7 +199,8 @@ struct ip_msfilter { __u32 imsf_numsrc; union { __be32 imsf_slist[1]; - __DECLARE_FLEX_ARRAY(__be32, imsf_slist_flex); + __DECLARE_FLEX_ARRAY_ATTR(__be32, imsf_slist_flex, + __counted_by(imsf_numsrc)); }; };