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 A5E6F2EDD78 for ; Wed, 27 May 2026 18:47:58 +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=1779907679; cv=none; b=a3w/Kz665sMRjWrZZfuadaA62y5gYOpmlOre+T4ah7UTi702r83LwVhh0pW7mjC91PP+roYkxCORb0y2taoRHFS5aBRSb4D0agTKvD/B2/qLDc5e5k6fTvr7dY7e7SkIIHX04rJ56vDEn66KD/BtM6oHZldQOWmmTlASbZ/BSvI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779907679; c=relaxed/simple; bh=9mDqVRiDh4+JzeFqU2i/cGpkesg2P5WUlqciW6jpKl4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=QXG/bvq28U1vobS4k//G/ZX+iuzxeGmgHC7XHBIowUr7sK5yAXnStMhgWbSbma8jUVvUXshkUnLMjH+3CiFAFw9l0hPJ5tHRUc/fkn8JZL6htWHenoErC6YJBY5OmOtnpTvsT6ygI0In0gRvoDzqcSCPzd4FgqcQfhSjIbFx/Sg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Lfne9/Yq; 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="Lfne9/Yq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8D3DF1F000E9; Wed, 27 May 2026 18:47:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779907678; bh=qqLuLqfiEq+1bhOSfvMKt/YTbpjF0pVLMRr83BqLcos=; h=From:To:Cc:Subject:Date; b=Lfne9/YqyDmRZvo4Oza3hay/NXhEf6zoIEBBlGaXi5y5KB9fxkSw1F00T71BZldex pOO04Eh8xPXS7kzEzx2lFx4ovv4v5+l7PupXmJXS4uFidqg7atJIjUAf5+1yYSGuwA BV60FDCfgkDP4MnZS0LoLga0DXa9Yw4PW5GAvSV51M2KErT2nyPrIXrKz3YST9uZNU vKe3Hh4DJYLfpTjYTz4pjNNNtks80ePLt//ChocB8hLMWLh0wtWMa+zdbVzICOO7hJ WRvnNfpFr0tVTlQWLjnVLR25oHTvaoxrAfQzexmyoII9edZaNxMyWP+p6BFqyVYW0m MddxZ+Yy0H50A== From: Mike Rapoport To: Andrew Morton Cc: David Carlier , David Hildenbrand , Heechan Kang , "Liam R. Howlett" , Lorenzo Stoakes , Michael Bommarito , Mike Rapoport , Peter Xu , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/3] userfaultfd: verify VMA state across UFFDIO_COPY retry Date: Wed, 27 May 2026 21:47:48 +0300 Message-ID: <20260527184751.4147364-1-rppt@kernel.org> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: "Mike Rapoport (Microsoft)" ... and two more small fixes. This applies on top of the current mm-unstable with "userfaultfd: snapshot VMA state across UFFDIO_COPY retry" reverted. v2 changes: * rename vma_snapshot to mfill_retry_state and related functions, variables and constants * drop redundant check for effective ops * drop vma_uffd_copy_ops() * restore large comment about MAP_PRIVATE handling and massage other comments * new patches: - guard against bugs that could end up with NULL ops in __mfill_atomic_pte() - remove redundant check in vm_uffd_ops() v1: https://lore.kernel.org/all/20260519052516.3315196-1-rppt@kernel.org Mike Rapoport (Microsoft) (3): userfaultfd: verify VMA state across UFFDIO_COPY retry userfaultfd: refuse to __mfill_atomic_pte() for unsupported VMAs userfaultfd: remove redundant check in vm_uffd_ops() mm/userfaultfd.c | 92 +++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 79 insertions(+), 13 deletions(-) -- 2.53.0