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=1794415524; b=3MbmsFor99Q5G5YXsOgDgpoiyycBnLWC5Q9JcUPEgJrsYHOeE/kc9aWXZd98j9wTPjsO DZzG3xmVWTA4yvHKzgg0gPMNwoDvL7KpENye50gpgGg8ruilXdRC5gMa9MNTLcI0/UyDy mT7bgGZ7P86v6HCnJPalDOt8XaJ7eaD3z8w6WpYUugZHKNGr0JitP03Jjx80nwHFWRaTM Vw8Op1mXLEHrNL35CRoMnV1FT0UWHwJnmqxmeaZw0ZUlQ+jbMpBdsYI0NsDgI/a3nfwT2 g8TOS9X7ZURFjRmgd4pogBg12T3nqxRyJbGhJKGUKAS43YGp5v842vvSkPRARMDGrcQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794415524; 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=PL3AnJhVsYW122b2YeacuT2cZ/FQy8eXi5Tk+MJD7v6Nigj84TX6xDFbFPsm36jbv/YN RajxvXrY40+RM0ESiy80l8BRUd1L+DmwB5vicArpS07xnCp3Yd5IpZkOg9Fud2xNtrdrD qOngI7laeYf/p3yurzzYCyiTVn+5LQbwLTd1DfspyFdlDof9DjwK8u7iNrhkmVNAceqtM OL2gvLPcVIZo/kc6lQNPqkvRSNeFJIjHWeZgXz5iMgGn0ewihdlQMo84HOJUjBes6yyjM qmfxcmhh+zagqjNKIXu33DRKWmKEsKNdmQgPcQznaoRpcieHp3fWq96xiWmf3AEsY5w== 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=bCdudd45; 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 EDDE5606A31C; Wed, 11 Nov 2026 16:45:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=bCdudd45 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 522A01F00A05; Wed, 11 Nov 2026 16:45:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794415523; bh=h7jKhgW2MQavDeYA5DvZZ06yeDl1v6ZtS0ur/qsa/To=; h=From:To:Cc:Subject:Date; b=bCdudd452ELxWqGQCoyC336cufFyki3Z4ZUyrtUobMnejdC5KGFvKDLrpgaaxe0Et 8FAd8CFYzWgZmvK+A2rEtJPjn2ohFWwJ1DaVWoWNEdbLztZIXitFFT5kl5o6NL4Mtq Ko3VJlnFFGTIfbsneDLuqjZL0aw3M0Fc2HYWfgxAx58dYeWjmL1FQcWn4q1LmBQHXU Cw1XUtd1SzJdjUeo0L3yYeaxjlNKvtQ2WqwFVbxgOYRvoDUyQcAyY4IkjYV6zUyPJv sRRlLQyHTmyaRK20YwnQXBP8wHBwPXNLUhhc0gPAUAPi2sRpA8fVLN32uBryu+VhWJ JsICkMsKe/XPw== 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 RESEND] arm64: patching: Annotate text_addrs, new_insns with __counted_by_ptr() Date: Wed, 11 Nov 2026 17:45:14 +0100 Message-ID: <20261111164515.77988-2-blum@kernel.org> X-Mailer: git-send-email 2.56.0 X-Mailing-List: linux-kernel@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=owGbwMvMwCUWt7pQ4caZUj3G02pJDFlfZs8OqvzxpL26Ybrp7IuO/as3zX8mYFl67o7MacMI6 b3SN9J4OkpZGMS4GGTFFFkezPoxw7e0pnKTScROmDmsTCBDGLg4BWAiwWcZ/ko+Ltvx64DPPYn1 Ky0zPto8PZgsvX1VaEaD4+55LwL+yBgx/JXy9FMpVuz/I+uzR/XbofaTUxqEaoUunr327eZtZwN THW4A 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; };