From patchwork Tue Mar 25 15:45:17 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nathan Chancellor X-Patchwork-Id: 876153 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 9392729408; Tue, 25 Mar 2025 15:45:41 +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=1742917543; cv=none; b=QihRNIreegX/d3ckfBTObbSbFdRU7Toykmz3pZ7xx9HLXkF7ximf1ST0sYMI/E4+8p4SEx8DlHsPCELEhMjqWCLlVG+WV7PAAheabzGr8CiQo9EORffJ1lc10R5LSzKjAF7iXi4HtrMncleN8mxzkCmI6T+gjiA7fZphMY4fdtk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742917543; c=relaxed/simple; bh=EmbT1j95ZQlEX79VYjHMceTDJmKdtuHVQmu6wl1izBc=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=T+/kVoGXhmmK6MdCtVUtETJonPJTLX7yPTJfboGFDrzKBxZ8aMt480SMLfGAr8cp7dvMB++KN8eREg1BHJWDANFgpKfq7tXOi67dYRKe2FAVDe5Sg+oR0qwJUjDUkvt3ht3olGrZRShZ4ozi5QK6+lLDy2EQ9rRaf0n3F3TcES4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cn6hlADy; 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="cn6hlADy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D8AB6C4CEED; Tue, 25 Mar 2025 15:45:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742917541; bh=EmbT1j95ZQlEX79VYjHMceTDJmKdtuHVQmu6wl1izBc=; h=From:Subject:Date:To:Cc:From; b=cn6hlADy45e95gGtO2Uas/mCsaTF9UXYTXZmLjJKW5iCNe4N/zMTdP75HRqK5HHl7 w1mFxMewMdzQIClzTgod+/+f3OueAncrkt9uQT2jH271X0bsY9BGBM0Ll2lKYvP38+ MXTcmufY468yAaRQJrxe0rF0HQF54QXcAWPTzosqEzbWiYw5nmI8XOedpbwGwptyk5 LVwZ2vUrJL2QWZzY5x83TAeeMe+wV1VVTyovXf518Y/uNYd0n1//DZFR2FJZwT2bJ6 m7lpyaz9BTz0IW4I+2p+XGPBMXeAYBaDH+npjEQQCWmsn1XSlCou0mQ7k11bp66LDn tLbIFkObn75qQ== From: Nathan Chancellor Subject: [PATCH 0/2] string.c: Add wcslen() Date: Tue, 25 Mar 2025 08:45:17 -0700 Message-Id: <20250325-string-add-wcslen-for-llvm-opt-v1-0-b8f1e2c17888@kernel.org> Precedence: bulk X-Mailing-List: linux-efi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAI3P4mcC/x3NQQqEMAxA0atI1gZqVUSvIi6cNjqBTiuJ6IB4d 4vLt/n/AiVhUhiKC4QOVk4xoyoLcN85roTss8Ea25raNqi7cFxx9h5Pp4EiLkkwhOOHaduxM23 XV/7TW2cgRzahhf/vYJzu+wF52/OvcAAAAA== X-Change-ID: 20250324-string-add-wcslen-for-llvm-opt-705791db92c0 To: Kees Cook Cc: Andy Shevchenko , Nick Desaulniers , Bill Wendling , Justin Stitt , Ard Biesheuvel , linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, llvm@lists.linux.dev, linux-efi@vger.kernel.org, stable@vger.kernel.org, Nathan Chancellor X-Mailer: b4 0.15-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1097; i=nathan@kernel.org; h=from:subject:message-id; bh=EmbT1j95ZQlEX79VYjHMceTDJmKdtuHVQmu6wl1izBc=; b=owGbwMvMwCUmm602sfCA1DTG02pJDOmPzi+abfrzlvaVKNNg1brL545ZhTSszvigyqZ6zEzyR yvrs3aLjlIWBjEuBlkxRZbqx6rHDQ3nnGW8cWoSzBxWJpAhDFycAnCRX4wMs6e8PPE3Tv0+/zrx y4/fcJ1JOZmjELapOqF0WmeO2TbDqwz/A7KYLgvpWdWKdL9Kzbdx05cS9zG7am203oyhJZRh0T8 +AA== X-Developer-Key: i=nathan@kernel.org; a=openpgp; fpr=2437CB76E544CB6AB3D9DFD399739260CB6CB716 Hi all, A recent LLVM change [1] introduces a call to wcslen() in fs/smb/client/smb2pdu.c through UniStrcat() via alloc_path_with_tree_prefix(). Similar to the bcmp() and stpcpy() additions that happened in 5f074f3e192f and 1e1b6d63d634, add wcslen() to fix the linkage failure. The second change is RFC because it makes the first change a little more convoluted for the sake of making it externally available, which may or may not be desirable. See the commit message for more details. [1]: https://github.com/llvm/llvm-project/commit/9694844d7e36fd5e01011ab56b64f27b867aa72d --- Nathan Chancellor (2): lib/string.c: Add wcslen() [RFC] wcslen() prototype in string.h drivers/firmware/efi/libstub/printk.c | 4 ++-- include/linux/string.h | 2 ++ lib/string.c | 11 +++++++++++ 3 files changed, 15 insertions(+), 2 deletions(-) --- base-commit: 78ab93c78fb31c5dfe207318aa2b7bd4e41f8dba change-id: 20250324-string-add-wcslen-for-llvm-opt-705791db92c0 Best regards,