From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f48.google.com (mail-pj1-f48.google.com [209.85.216.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D9CC81624CE for ; Tue, 25 Feb 2025 22:47:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.48 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740523638; cv=none; b=jHEsT8OsOBUfTKNjiaAZ/HEnqT7W2miaF5VPaCVPByQHQHBlCaz5c+o3anwk4UU5eeuN1gDeD0xlFTBiVCp28zh2ja/uEokNKM4YXMUwBEb0xCfQsjKSgvfUhB3VYJpXZmCS8Ng7C2GwK4keR/d3UPjF9m5NTUCOAChE0ujgP+4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740523638; c=relaxed/simple; bh=ny2ghrdd8gmVHUJmIR5VEz+T3IjMS6VPe2m4WRZaJOs=; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject: To:Cc:Content-Type; b=nMR2UwRIxYl+hbWG6xbPFuhso534K185VwUyzODkIOvkZNLxHfchAywnKx5vhNoMBj+j+GmpvVxGMX6m6DBEcLwYnvfGsGsM96/Xh6yfOGm4yjM939ahollZBRyZkpm8kS4fNxVRWdHKxEBoSfFiwWiiSaoWyBr1QpqazZuwTHU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=RGJJU2BO; arc=none smtp.client-ip=209.85.216.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="RGJJU2BO" Received: by mail-pj1-f48.google.com with SMTP id 98e67ed59e1d1-2f74e6c6cbcso1620469a91.2 for ; Tue, 25 Feb 2025 14:47:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1740523636; x=1741128436; darn=lists.linux.dev; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=ny2ghrdd8gmVHUJmIR5VEz+T3IjMS6VPe2m4WRZaJOs=; b=RGJJU2BOKVh1zZuQR3INa+sQPV+SZo6qoucRrmBh8gGTjbAzLhzWlf+H84T7u11LDd rhpS/bGMEycOPr8V5wwBAFrYqc9HNNWpkfobZLiBzcFjG8HZoN4gMb7C4qijbYwimX1h H0vPbI4+vvCdjyW2zJr/5YRlfAZ2hi7HZWDBsuZbomxUHRbKku+kOWZRQ4TssYy12Okd XV3yk76stIMnEWlyQkHaqUe66JvsVsmOXPbseeUFdZvu9FzNiJgYWT9OzevHKcih+aGH mJP+ni2NdId3cGY9FylhCd4RflZU64hQiqRGEtEQHOEvPD2MNPp+rL4qUCmG1N27s1di lUdQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1740523636; x=1741128436; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ny2ghrdd8gmVHUJmIR5VEz+T3IjMS6VPe2m4WRZaJOs=; b=MOTVIovzWUQGfELGts+/PORQxo4x4y1HzWmBV6K5lC0+MT6h97W8aMMAVFj78WLW63 shukhvtt1CegO/hskz2Y/FtKal/UhmK1onj3vYE46IK3FSoC/voXnd3B214Wp6xYKsCm B71tk78oKvMmMomYiJrcE/slhIQpnAeFmA3+N00Z1mF+l2zif5liFKbCSSuw/JiVtnR4 wW6b9R80HBuawyLBDaG72adAAjRtuJM39GnQRlX8nv4fL2z6cpBVm70vKjXoRk0VfWRL /ZMj4nYEiGrA6WNJ2OUg0qY84u+cSKsuNvajlYpRvq3Ntq7xYUUEHQBGEMuQE6CJRLs9 0D6A== X-Forwarded-Encrypted: i=1; AJvYcCUz4Z5elz1Qzs1WlGen2J2siIfaFSx5or+xOS7tz6z8wY2Wx0TeLy2JppgUQe0U8tSgmYLbQVL7@lists.linux.dev X-Gm-Message-State: AOJu0YybYh9asZ5saunp9R7zDWFCA4a0cTJgyV8itFcq0jKFyTLaz/YR J8uxaDl10HpIuEhjTKsuA7AItaSznC0njMmwy6ZeXbMMX9Kx4mewd8Z4i/gcjksKlG2rdZKNSr0 sTJlWrBkJn7s/7zUHVcygiUNnt0Y= X-Gm-Gg: ASbGncvrj3vXoNkrZzu8JAKJdmWOHX6PzBuVohEXMsRqh5GfEMnled42dTcXHTrTfqF Y1KoW2QxP1y/gCnFDsuF8l1hsgt/PYtlRK1a2eTLYJmSPoyhCY/LOeA6XHyosYIsJD0rk/UKkuk MLZnY5V7A= X-Google-Smtp-Source: AGHT+IGi39MZWp1FrqUalH4zLCzJZyUAjKjFfaYDXFXZ7HT8JiWDotjXJ+45bzkp2240ucesaig3+7yZTGxqAKsS4SI= X-Received: by 2002:a17:90b:3848:b0:2ee:acea:9ec4 with SMTP id 98e67ed59e1d1-2fce7af8da8mr11771572a91.3.1740523636156; Tue, 25 Feb 2025 14:47:16 -0800 (PST) Precedence: bulk X-Mailing-List: ksummit@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20250224002745.7d7460a7.gary@garyguo.net> <4cb1d98b-f94b-410a-be90-4394c48bdbf2@proton.me> <137dd7ef-b8f6-43df-87e0-115f913d0465@proton.me> In-Reply-To: <137dd7ef-b8f6-43df-87e0-115f913d0465@proton.me> From: Miguel Ojeda Date: Tue, 25 Feb 2025 23:47:03 +0100 X-Gm-Features: AQ5f1JpvOh4_I-FDP0Z4g4cSDvvRBjbQMQSAXGa5UM-gHOivr4L6ainO45xfxNY Message-ID: Subject: Re: C aggregate passing (Rust kernel policy) To: Benno Lossin Cc: Ventura Jack , Gary Guo , Linus Torvalds , Kent Overstreet , airlied@gmail.com, boqun.feng@gmail.com, david.laight.linux@gmail.com, ej@inai.de, gregkh@linuxfoundation.org, hch@infradead.org, hpa@zytor.com, ksummit@lists.linux.dev, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, Feb 25, 2025 at 11:38=E2=80=AFPM Benno Lossin wrote: > > I do not get UB when I comment out any of the commented lines. Can you > share the output of MIRI? I think he means when only having one of the `pz`s definitions out of the 4, i.e. uncommenting the first and commenting the last one that is live in the example. Cheers, Miguel