From mboxrd@z Thu Jan 1 00:00:00 1970 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 97A4B3101C5 for ; Mon, 8 Sep 2025 15:55:53 +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=1757346953; cv=none; b=UDZX45YS+ksu1LD0I4ukrhxGFN3nP5oSzQuQkOvtcQ+sMF4kdn/eMLqdcInfof/VOS4/t80410GIYeAib6uF2G/zDPSIFRPycKLjoW3LMgPFAxb6hsPCqr7rGe8l1Y5IXkMeSaRSU2VweeBnWL91dWY/yJQwc51GYaMnS+r2UYQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757346953; c=relaxed/simple; bh=lLhbPcuccrh2iWdqlw6avv6jjc/4//fhsw+RixeJ94U=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=Q5DSf7Ya369hjAxiH/UkjxGjZohg31A4zEtT1+o+eFSbWPi0XFkd7uThrLryNamlRqvfbQpY+bSbDNecrqMVMXvfyd+4lcpaW+CU1fcftcCcv/FgRJFyv7mJBUiOZxR968t+9crOKNt6ruo+tto3B39Z2jlNxvYA8Mju7YjMCu8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NuYrAMMW; 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="NuYrAMMW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5C017C4CEF7; Mon, 8 Sep 2025 15:55:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757346953; bh=lLhbPcuccrh2iWdqlw6avv6jjc/4//fhsw+RixeJ94U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NuYrAMMWtM7HuqBx808w83itr50EZcctk4Z/E20AFT532ebIk+lM3pt3v2BLIX97h nGkjP55Np3GxsQFYZuo+tzXv9PPcTAg0AnK5pWBpSk9PY9JbJ7VMvF/fzTMq4UI8MX cg7+x9gVmMIx9r26sDTGcZXsu19HbNLkaDharc81foxF0Hq3+2OFSgDIL/bMhHuYpU a23RpTdGvgohZIueqDgVqZMcQbz0QHfo8QW7lUgnjpHZDL1EWcLyvzZpz6ai7ll1SX /5/0u0/Q/lT8pQ0UW7fUbG3BYQSUB8/RUhnsNOvJqL5d3xHBzuTVitCHyB7kHuJ4/r A/AtuSdVXWUVA== From: Will Deacon To: Catalin Marinas , Thomas Gleixner , Arnd Bergmann , Andy Lutomirski , Vincenzo Frascino , =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= Cc: kernel-team@android.com, Will Deacon , John Stultz , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/3] arm64: uapi: Provide correct __BITS_PER_LONG for the compat vDSO Date: Mon, 8 Sep 2025 16:55:32 +0100 Message-Id: <175734490190.158300.1463560749148120421.b4-ty@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250821-vdso-arm64-compat-bitsperlong-v1-0-700bcabe7732@linutronix.de> References: <20250821-vdso-arm64-compat-bitsperlong-v1-0-700bcabe7732@linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit On Thu, 21 Aug 2025 09:56:43 +0200, Thomas Weißschuh wrote: > The generic vDSO library uses the UAPI headers. On arm64 __BITS_PER_LONG is > always '64' even when used from the compat vDSO. In that case __GENMASK() > does an illegal bitshift, invoking undefined behaviour. > > The first patch should go into the 6.17 tree. > > > [...] Applied to arm64 (for-next/vdso), thanks! [2/3] arm64: vdso32: Stop suppressing warnings https://git.kernel.org/arm64/c/80c4e1948908 [3/3] arm64: vdso32: Respect -Werror from kbuild https://git.kernel.org/arm64/c/281817dffe28 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev