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Tue, 13 Feb 2024 15:42:13 -0800 (PST) From: Kees Cook To: Jakub Kicinski Cc: Kees Cook , "David S. Miller" , Eric Dumazet , Paolo Abeni , netdev@vger.kernel.org, linux-hardening@vger.kernel.org, "Gustavo A. R. Silva" , Rasmus Villemoes , Dan Williams , Keith Packard , Miguel Ojeda , Alexey Dobriyan , Dmitry Antipov , Nathan Chancellor , kernel test robot , linux-kernel@vger.kernel.org Subject: [PATCH v2 2/2] net/ipv4: Annotate imsf_slist_flex with __counted_by(imsf_numsrc) Date: Tue, 13 Feb 2024 15:42:11 -0800 Message-Id: <20240213234212.3766256-2-keescook@chromium.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240213234023.it.219-kees@kernel.org> References: <20240213234023.it.219-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=965; i=keescook@chromium.org; h=from:subject; bh=JaLcS0MhnhYo6HqFOcWGWSj+KGWfIIInyL0CMdYPrLw=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBly/5T7cTDxgTr0rDIqvT3vhjqivyAqSR9MrmXk vJe8ulo+06JAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZcv+UwAKCRCJcvTf3G3A JjLOD/9kSRrC1i4wpx5fWHuu7VPgWHXMKYgp17lT1gJYIk6Ae40EuhyRDJZR+MqkiW8msoUquzA cDzdbDz26Z0dJgcnpAmerx78u08EYTTHrYMUaZI00fnzYhfO7GrKKNQ2o4i4C2BOt3IuiO1CbMP zJ4di3CiyGy71ooSKn08Z3/5pTLNAdmig+gl3GP2GNI2U5ny8OHZOOdSXxbaaM5059spgeEdSPF nbU6vXD4q5enmZH3V9CBHGOG/uXxO4okDQDH1y0gKDJu/PQ1foGcmqtqlMoXCMF3bKvq4/eiQ/B dTPsR8alCW97wnaa+pi6F8SlkVC8XmxMghe18rGMMBLVOuh/IS/ypL5K0b5TCPKZ7leqWFiRUEZ Vd7OLDIFl2GbI84vzx4s7kbcM9rhX7ADl46J55D0+xFomlstdpJSJapDvEonhrYUda4b18+paY/ 6a9OxcX4ihmoNr83RlW/n9RXCNtBVQin+GylpP5LQvS07iQ8GCZhy1qr4Uajq1qaffdIDYwSS/M FMytHRtpsPJCOMq7evN65jd5bn82KKnoKnoIx/M/IyePgJy3gKPL6+lVP4YU5db/OgXrvDxuFM3 Bf1sZ826NZDOgvVq2QlC3wP9X3CDLTVHF4Ab4de9u15ky7gTRZMgYZ8CpdLqudDhJ3PyovS9e5S StLpaZfKQmBlPeg== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790829179714640774 X-GMAIL-MSGID: 1790829179714640774 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: Paolo Abeni Cc: netdev@vger.kernel.org Cc: linux-hardening@vger.kernel.org Acked-by: Jakub Kicinski Reviewed-by: "Gustavo A. R. Silva" Signed-off-by: Kees Cook --- 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..2f0c4d40bc7b 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(__be32, imsf_slist_flex, + __counted_by(imsf_numsrc)); }; };