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R. Silva" , Thorsten Blum Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH] arm64: patching: Annotate text_addrs, new_insns with __counted_by_ptr() Date: Tue, 20 Oct 2026 13:08:39 +0200 Message-ID: <20261020110838.191061-3-blum@kernel.org> X-Mailer: git-send-email 2.56.0 X-Archived-By: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=823; i=blum@kernel.org; h=from:subject; bh=BbljLzGPofMIqi5g5mgMPpwGq6qmez95yloL4CR6jK8=; b=owGbwMvMwCUWt7pQ4caZUj3G02pJDFnXvbcFVf540l7dMN109kXH/tWb5j8TsCw9d0fmtGGE9 F7pG2k8HaUsDGJcDLJiiiwPZv2Y4VtaU7nJJGInzBxWJpAhDFycAjCRVhGG/z6p+1hTToYtswlr KCw8xKnS8fTtQ6FlOlxS/aw3jp3Jvc7wV2hTr/yStNsVRXPaItcmZTtH7vD9wLJa17XOrqGlpTu TAwA= X-Developer-Key: i=blum@kernel.org; a=openpgp; fpr=1D60735E8AEF3BE473B69D84733678FD8DFEEAD4 Content-Transfer-Encoding: 8bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Add __counted_by_ptr() to aarch64_insn_patch::text_addrs and aarch64_insn_patch::new_insns to enable access bounds checking via CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE. Signed-off-by: Thorsten Blum --- arch/arm64/kernel/patching.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/patching.c b/arch/arm64/kernel/patching.c index 09f019c6547a..5fc7805a93f0 100644 --- a/arch/arm64/kernel/patching.c +++ b/arch/arm64/kernel/patching.c @@ -194,8 +194,8 @@ int __kprobes aarch64_insn_patch_text_nosync(void *addr, u32 insn) } struct aarch64_insn_patch { - void **text_addrs; - u32 *new_insns; + void **text_addrs __counted_by_ptr(insn_cnt); + u32 *new_insns __counted_by_ptr(insn_cnt); int insn_cnt; atomic_t cpu_count; };