From patchwork Thu Feb 6 18:11:27 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 13963414 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 36EE4199948; Thu, 6 Feb 2025 18:11:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738865494; cv=none; b=NfFA1OPms/WEjm2WpV9DzDGNwx4YZTP1CJnqoylUzykNeFS52Uh5CdxPdiDRHnQORlyGiwz3CpdCItVfY+1aEAy823VDKSxVIWNB1VnOhkHRkVH4vx+7GYCtoDxhZqdy9gtScswjiOhZUNvJyFEX8ml0/qkIh5UsE54EY0KhbhI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738865494; c=relaxed/simple; bh=REWIDIpSqJfCqMQ3pqQq6PxFe9oC9dJ25XsThshVyhY=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=iEu4VZgQt6Wm4uqINuydF3A9P0YEtN5/9q00lHkCuRFy4Yf84rmggrIBDMuICAQfJImFhI2l8ZnxoQDu07Vv98WF5A46cZw13IXfH5G7wOSRQNbh9ZgwSHWHwCjdoVodqvX1tMhTrk6sAO4FS5sLb+0ZdWBGwh54SnUKcyD2xD8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RNXO6GPG; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RNXO6GPG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AF7F5C4AF0C; Thu, 6 Feb 2025 18:11:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1738865493; bh=REWIDIpSqJfCqMQ3pqQq6PxFe9oC9dJ25XsThshVyhY=; h=From:To:Cc:Subject:Date:From; b=RNXO6GPG7IKzvYunqmk/cCTZkEK/0wm9Y/8x/gBudQVQ/bc/RiYImqE0+eklide8J b4IhDBeUGkULtvXRU1/4Cm+06XkJ7X2x+WegXLBmXxf3nl9a7uFJs1D44ykPxsxuU3 nt3smEpn2T42SmzWY8ebKGL3T0/6Gg8O/5NuGlm7gP2Ck3oHnMlZSHAkiklDu9hAZ6 RyfajDD4i8lK5AqCNzFExP+EOpQ4Wyh8dY48IjyJ7JFe5AwU9kAePX6OM9ebRAyC2E EjkoKEGcxs7712k4LbaXTkzG3gshkMJgFBw4bVeBnXhY5wjwmlNv3p5fFUYv4dOdGp UsPU/8zaaNHZw== From: Kees Cook To: Suren Baghdasaryan Cc: Kees Cook , Kent Overstreet , Andy Shevchenko , Luc Van Oostenryck , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Philipp Reisner , Miguel Ojeda , linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, llvm@lists.linux.dev Subject: [PATCH 0/3] string.h: Use ARRAY_SIZE() for memtostr*()/strtomem*() Date: Thu, 6 Feb 2025 10:11:27 -0800 Message-Id: <20250206175216.work.225-kees@kernel.org> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=535; i=kees@kernel.org; h=from:subject:message-id; bh=REWIDIpSqJfCqMQ3pqQq6PxFe9oC9dJ25XsThshVyhY=; b=owGbwMvMwCVmps19z/KJym7G02pJDOlLfgcopQUdcXiVcCyXf9my5g1TSl8c6l8lv2OyUwfrP FP1mUIPOkpZGMS4GGTFFFmC7NzjXDzetoe7z1WEmcPKBDKEgYtTACYivouRoZcv2XaORrZKztXM N/KMzZu/rv193fAzq90iuTV8WVt1nBn+O3R9MUjdMGH9i3WTKgvsNJy8NRsLE/u/hr6R/XDZMvg KLwA= X-Developer-Key: i=kees@kernel.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Work around a Clang 14 bug by switching to ARRAY_SIZE() (with the added benefit of explicitly checking for char array arguments) in memtostr*/strtomem*(). -Kees Kees Cook (3): compiler.h: Move C string helpers into C-only kernel section compiler.h: Introduce __must_be_char_array() string.h: Use ARRAY_SIZE() for memtostr*()/strtomem*() include/linux/compiler.h | 32 +++++++++++++++++++------------- include/linux/string.h | 12 ++++++++---- 2 files changed, 27 insertions(+), 17 deletions(-)