From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792494568; b=5FB/WjdJce7m+H+AxfWNCeBrpOXa65QIrN+bN58LlfXoFwnjP4VLQ/Ph6zwhS/02DU9f ChSFEPAv0gyT30araFhU1kNCOzBvnIf/ecrc/bV/4HswEJ7g9tKA4U0elbrByevMAkhWv 6uOpatpQnX5jk+h+eMAa/IvpVngx0JNqp+Z5e8UW56pO+RRKwj8Uf9a5+jMhQcbqG8VIM CnqWX5F0QKU4EBj3f+5SllzL3dXDJQsVj32Gp4PLNFE3WgGHqtQSkW75HMEV0TqkI5ZJq N9mVUkeW9/yXLduLBvgn5dYlTON4ePBJ2mtRmUWe1a+G4sCjJ7wvO34utRYdlED2RUQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792494568; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: MIME-Version:X-Developer-Signature:X-Developer-Key: Content-Transfer-Encoding; bh=h7jKhgW2MQavDeYA5DvZZ06yeDl1v6ZtS0ur/qsa/To=; b=A+6gub8VUQWc15UgEfdCMFIttZ6DFxd40TxyGTqO2Eq8r244dXCVrsu8dLlV5q0PYjiZ F6jekiIuhBR32ihhDgmZ2APKhvI8EfEDpx4La4mwT+JcE2gm/1bGbEbjFUEswwtOMrTxe Q0+EZXQ3mbkufp5F5tq5gYDlFnx2tzn+RLnoI8M2PV8jcY4jSKoRx8O/gNsGTaobSDQvI O406S/BKPqvsRNJMyCaZYdE8vQgOFjSnmrERWiKsLVPt2zLawR/XjqV/E/HY7LDElaWHP TcetNxt7kkDNZkjyCLs0dgyTVmnO6dC/8gLezUZ6ygu+kqjZDx61t/VftoRtiuSjyhg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=JB5yPkm4; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A9260606A319; Tue, 20 Oct 2026 11:09:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=JB5yPkm4 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1A39B1F000C5; Tue, 20 Oct 2026 11:09:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792494568; bh=h7jKhgW2MQavDeYA5DvZZ06yeDl1v6ZtS0ur/qsa/To=; h=From:To:Cc:Subject:Date; b=JB5yPkm4XXvobRkuIEQqQ8ioy5y4+uEbdT7VbrS4d6ejba9cZ4jOTh/XEZYKyMPdH j3t4nJFVyPeys5XaDBddY8adyHIgS9qjpi9B8dKwdK6NqbvGo16pEMAGOv9In4um2N c5RDxYpB7RgBllNJWAWceAVTe2dg8bNVw9uDf2RKeR5Sr/GV2JFO0x1i71R+4FZ+B6 PNiOknRO7INNn2kMZRhD1LF1+lhfd+dgxGLz66shluUZ8z2hnLspDvzhtGMFRCO3yJ jI/i6VjkuIzyl+ZUpERaTckvpwsyzhCs7XsZlNw0pM3gw8EqIlSkaUhASeWuTuQ5+C p1S+ruzkpDAHQ== From: Thorsten Blum To: Catalin Marinas , Will Deacon , Mark Rutland , Kees Cook , "Gustavo A. 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-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list 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 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; };