From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f74.google.com (mail-ed1-f74.google.com [209.85.208.74]) (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 A1C781C5F39 for ; Mon, 15 Jun 2026 13:05:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781528711; cv=none; b=Vxz4Yt+H74gw7aU9PCwj4/zG4uHCVVodgSDdaZUk5+ee4BP7q8cw5VWrK/ISR5gPCD6xe0s6O3jm/flB0BG6kagFNx3q1oT8zwKL0jxVdR2Utky+7r7iD6jlXt668jr5h9HBOV4LN/thLgjkNqLAZoFF41e4/TqRo/diIHXHN3Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781528711; c=relaxed/simple; bh=FO3mcCsNX+jR2UNiUneL2iTZhjI3WWm8ewjzIvXJx7A=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=nncsuz6e7INR8i6lyNyfGCm8iIwTezrRA1YOBZyvOj7NcjdXaT722VaMqBcHSXlAD90glR18QFwRjuAK4nngKkCLzabqD1Y8t9cnxUzqisffy5GjCQZiWndxcayaigR2QKOAfEeCqyqAgQrzaltPl9EmqQKLMvlyA2GrctOsr4s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--tarunsahu.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=dVL41J8W; arc=none smtp.client-ip=209.85.208.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--tarunsahu.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="dVL41J8W" Received: by mail-ed1-f74.google.com with SMTP id 4fb4d7f45d1cf-68cebe33df3so2989847a12.2 for ; Mon, 15 Jun 2026 06:05:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1781528708; x=1782133508; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=fLKpx/jP4XiZTHLeIbQxXoF/roGoBMkQ9auwEVuefCU=; b=dVL41J8W9lj0h9A78PEk6Rml8YIZJodwihwpZ9evgARdGqe0vtMBDnCtm1PEWwsSXR uURQesXCwm5Xf1JG/BPaQWHw7ko7qe4cjJ2W9sGX87LsM9v9Xcl7oMc1tAWIobeHHk8Q Ikl3e1P4AYDF3BfVoYog9JqHE++ITBC9qIHVlk0P1vEUnJurLYUuF9aUTQrTiXLqw7yb geWEZ3yEIn1GQILMJ/dXVhWD8Av90d/Tm4YZgPAlapO3Pi77DLmrPs00arJDQPtUlxeP SKCZheendo0fuMbeKy1ae1fJWpZ70gp+Zy1stJZ05UZjiXXOLJOX0cx1UDmm8Ld0fKdY M0kw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781528708; x=1782133508; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=fLKpx/jP4XiZTHLeIbQxXoF/roGoBMkQ9auwEVuefCU=; b=jOzAMnB5CLzlbAvJxWkVAI2SiW2jzv09LAz4i1QY4zjgATJ8kwDtOQW0p4+xR9/N8Q jbq1BQ7lO/1Kt7/DiqUIldShItapK5rfuH/+5vHr6GLddW96QlSkk/I119UDgIJgZh5/ YUbodgayN9P58KkNPtbhK4KDCy0IDDBfa+68GUCJ+EhwDnanfNI656tUufXBd+yWXLdO gWQninvX7pshkx8vErbUxLGFAJLuZhNPsth1bS1NXchNeFGVGut+ITj6Q94jdmNQA93w gN+bhabgVp0Vx1fCPdduB7hlVKiuoGd9IkNZg4WMxgdotcvGd1QSgSu41P1y5DCMAW+3 B1+w== X-Forwarded-Encrypted: i=1; AFNElJ87ony3aWdfzIBXbpWPKReknaTbvoLJ+vSsWlvTn6d8aPZvH2YSHSSYeRKG8a/WOaWQhcbdN0rF5mU6QMY=@vger.kernel.org X-Gm-Message-State: AOJu0YzHmkyzMJERM+qzlr1ET8L18vranRcQJ6jWKYpecPdDPymMD/lV fbj91fj5d3Y40kA1h70d4qEnPv00MRwoNh1fSToKv6G1rcaB424DJuFIylOw8GL5iRwbSaUGMUq jco3FLCnkKIGp70Xwmw== X-Received: from edo16.prod.google.com ([2002:a05:6402:52d0:b0:680:d43b:83b]) (user=tarunsahu job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6402:4493:b0:691:af08:a9fd with SMTP id 4fb4d7f45d1cf-69378a03b9cmr6248742a12.11.1781528707628; Mon, 15 Jun 2026 06:05:07 -0700 (PDT) Date: Mon, 15 Jun 2026 13:05:04 +0000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.54.0.1136.gdb2ca164c4-goog Message-ID: Subject: [PATCH 0/1] mm/memfd_luo: use KHOSER_PTR for serialized_data checks From: Tarun Sahu To: Pasha Tatashin , Mike Rapoport , Pratyush Yadav Cc: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kexec@lists.infradead.org, Tarun Sahu Content-Type: text/plain; charset="UTF-8" Use the KHOSER_PTR interface for serialized_data in memfd_luo to perform type-safe pointer conversions and checks. I have tried to keep the changes minimal. So only changed the memfd_luo. Would love the suggestions for if we should be changing struct liveupdate_file_op_args like the following. @@ -46,7 +47,7 @@ struct liveupdate_file_op_args { struct liveupdate_file_handler *handler; int retrieve_status; struct file *file; - u64 serialized_data; + DECLARE_KHOSER_PTR(serialized_data, void *); void *private_data; }; Ofcourse, it will require change in liveupdate and luo_file. Tarun Sahu (1): mm/memfd_luo: use KHOSER_PTR for serialized_data checks mm/memfd_luo.c | 30 +++++++++++++++++++++--------- 1 file changed, 21 insertions(+), 9 deletions(-) base-commit: 0e0611827f3349d0a2ac121c023a6d3260dcecdb -- 2.54.0.1136.gdb2ca164c4-goog