From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 9468C3C4561; Thu, 4 Jun 2026 20:14:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780604076; cv=none; b=cBnJgb8MHx1JxZNz58amZqknPtIKNBkGyzNin/7v3LwVq0EkJmz28mOEPZytJItSw8tQ+at0KPjkGNXNULR77J4miwxsvA5FLMVSKtwszAZL8l3TfWSFCTTOISmcA2lmbr1cuRgN/TVaX/tt4Unfi8WB5m0i3z6lgxft/MFL058= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780604076; c=relaxed/simple; bh=HIU6Nmu7iABl9KtQIYtvgtPsm8T0d+RqMDFg+vb7EbI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=ePp8dXj9Ax8CCsqnDiwH+WwvUXmAat75FyX0dUe5J6/1z3nofKxSPgJe8H7J+FhAGL3YxDyLG4Wz8mjmRVYkhk7HDJVRBz2YRg4WBb+fakACZtywNfx+obY7kU0pnIW8RKabVaPy3ORd8Amjcv3fLt/IAgSZLHztHqBjQweE4vs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Koul0/fk; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Koul0/fk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0B1AB1F00899; Thu, 4 Jun 2026 20:14:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780604075; bh=G3TVjSgjK9G7CyHxcZcbdJi1JuXhkhXf1eJMpalGwTo=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=Koul0/fk1we1IaCTJ09OH1HS+PPhIUtV9DSBqsN9ivuoz0s/UmIQ2Q6kp6W8Z4/mu ZF/Yxkjr4/r0P88xOyitn3hyuyev9JS+RNCrRgXiJu6OF2AVGzhu6IrA0HGDgZIPm/ 4ClHjq1YDnPgBSpqrZJoqyanInFwWw7lbRXjOM7Nq/TN87cur4wSynpuOfJ6gJ0y9v s0NWv/VGyf9weS7al6hGSQv05pLvqg0uYB5M0n8n0KrVAa7vJJ1Te6vUe1WfIm0dft qxH6Gf/rEVZR2M6y4v/mPV2BgbRKXbCiXxY8/Q7JHtDuKZkxM9WnnuapYMrS8/RtVZ o7mhUs79w09Xg== From: Andreas Hindborg Date: Thu, 04 Jun 2026 22:11:13 +0200 Subject: [PATCH v17 01/10] rust: alloc: add `KBox::into_non_null` Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260604-unique-ref-v17-1-7b4c3d2930b9@kernel.org> References: <20260604-unique-ref-v17-0-7b4c3d2930b9@kernel.org> In-Reply-To: <20260604-unique-ref-v17-0-7b4c3d2930b9@kernel.org> To: Miguel Ojeda , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Alice Ryhl , Trevor Gross , Danilo Krummrich , Greg Kroah-Hartman , Dave Ertman , Ira Weiny , Leon Romanovsky , Paul Moore , Serge Hallyn , "Rafael J. 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Howlett" , Vlastimil Babka Cc: linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-block@vger.kernel.org, linux-security-module@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-pm@vger.kernel.org, linux-pci@vger.kernel.org, Andreas Hindborg , driver-core@lists.linux.dev X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1078; i=a.hindborg@kernel.org; h=from:subject:message-id; bh=HIU6Nmu7iABl9KtQIYtvgtPsm8T0d+RqMDFg+vb7EbI=; b=owEBbQKS/ZANAwAKAfpQKQiqxb3QAcsmYgBqIdvnvaCfCPZprFYoyr5bjX3TfukME5Od6oPB9 tR7l/9inKGJAjMEAAEKAB0WIQRXitnI2WZ2JirAaob6UCkIqsW90AUCaiHb5wAKCRD6UCkIqsW9 0LVHD/9orCNW9km7eoo7svZph7kf2oFSscnDuSfnZbnknSzXSrxvmhwExeDA1cSgUg7ATS13m3M xpd+u7kmEAhHJpaerkAELxtghRA4/yE0MhmVrNvWeQpIHOya0srATnagWFriXahuqmMwDkzpWGf GT4mFbiGz+DAiE6iSQm7E3tvl785uUxtjXKpgqHSZT0HMbqOT0UxX4cztFf+i2cKC3D40Of5EDy BjE0KgRHNh66eYXVBnI1tjYOrOLbVNwfNdvhCpwo+PI38AbWVAU7qJCTO+yCPRsIVrcW+W3CM3x +tRe3sIbQORfl6dsfv+Noz/08sOpItUKm6c94Fn2bYYJ7VI9xbe6qrTQnXzmvuD2F3e0ArAOvIE 2INo1C1b2Ky8odRfgPR6tvPP9k+FpeidXIm5n5kNm/yprJ76UETTS32XGwcO3fVDoFmGtPjq9fW nzxKp0nXHmqq8BrQf+RLIRYWnRjzpmB4XuhAfAAsTK3B6ib0x0oX0nFWUPk8+GOrnEfDhlNh9ep CsuBUXl5x3yrcyq7mCOBEYNuzZwxHLJtTsO1ycz90dn42DAfEfAw8HA7pI7dZ4zPXoRetBRsoUw F8ELxr+1c3uiHRADNWr0nN7b23n92tdEiOAINa+JakitVe3c9j3MS5jLOQCb6KBQfuu8bstQ0De BtJ6FehLCTXpwLQ== X-Developer-Key: i=a.hindborg@kernel.org; a=openpgp; fpr=3108C10F46872E248D1FB221376EB100563EF7A7 Add a method to consume a `Box` and return a `NonNull`. This is a convenience wrapper around `Self::into_raw` for callers that need a `NonNull` pointer rather than a raw pointer. Signed-off-by: Andreas Hindborg --- rust/kernel/alloc/kbox.rs | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/rust/kernel/alloc/kbox.rs b/rust/kernel/alloc/kbox.rs index bd6da02c7ab8..6fab67704294 100644 --- a/rust/kernel/alloc/kbox.rs +++ b/rust/kernel/alloc/kbox.rs @@ -188,6 +188,15 @@ pub fn leak<'a>(b: Self) -> &'a mut T { // which points to an initialized instance of `T`. unsafe { &mut *Box::into_raw(b) } } + + /// Consumes the `Box` and returns a `NonNull`. + /// + /// Like [`Self::into_raw`], but returns a `NonNull`. + #[inline] + pub fn into_non_null(b: Self) -> NonNull { + // SAFETY: `KBox::into_raw` returns a valid pointer. + unsafe { NonNull::new_unchecked(Self::into_raw(b)) } + } } impl Box, A> -- 2.51.2