From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f73.google.com (mail-ed1-f73.google.com [209.85.208.73]) (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 7B65838BF9A for ; Tue, 23 Jun 2026 10:52:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782211926; cv=none; b=BY8SzT3VNWQEgzjmYog2zuChMc88sHTdQs7bPa82MvN7frf0YJlIkqKslqS/fELfc7n/hmm6NYUHgDrP8KD8HSSAlugEKM87m+bxbimJNshU9EDBcNXKzpseWnkFgnrb5P1Zdws5Vbuf0wPblz3O3yBS7EsepdXpuQe1qBauD/Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782211926; c=relaxed/simple; bh=u9JRGv8+JIpTXIQCHM2j+DkhCTjDmu6pXvyxoDxrxEM=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=HTvaczzfrpcCha7tMvPn5AL3iqZwFpZTmguzDbO5lRxL+qTH6xyUUKu3YyGN1d4qTRVSvLcFM93/iuZXA3lfeOgnwllDknbfTbsNBHXaExo6fD3I8ysdCfVyvRpqJHr7CoQmAFsAALbPeENvG10IPw8mAD1XqXDaKRKbte8hDis= 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=c1LrKfat; arc=none smtp.client-ip=209.85.208.73 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="c1LrKfat" Received: by mail-ed1-f73.google.com with SMTP id 4fb4d7f45d1cf-6960fb32b74so4636390a12.1 for ; Tue, 23 Jun 2026 03:52:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782211923; x=1782816723; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=CTCz4sMSsafNhU5kYM2pwCVlzIjBwvspLMJZApXNuTI=; b=c1LrKfatDyk9VpfSDaGHfK6cLo4b/deAEYIIqePn4nDyEwlognXcTN/J/VXFgZy62y X1uRKDO1r8MqHvPCBYLWJEf5fMqqJynCugcTtnwHL2vWODSjS8/70L9CnN8w9psmciqc e6K1SsLIQ7bM2cnqY7lq6lsob//G0IWarq9W3zvolTiYrAiuqiyJDUpt8O9RCtgPpjVN yZXbLfZ6JgeTpjqmyFz4Iv99iHAZUCtpxg0WbbGVWKLGd5Ccp7uPcA3RvO7eQGRWIFjU le28O9W8HTqQrfRbCIWpQpvmn2NCyVd9sczd3YTH0BxrBlfJWi8hEDodzT5LJo4hDpwQ iHCg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782211923; x=1782816723; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=CTCz4sMSsafNhU5kYM2pwCVlzIjBwvspLMJZApXNuTI=; b=HZ159ozIuVzUvxuxKEGk8r8KALkIZB2eLVnauBKFBlLt6hUTuZb2hBUOw7NmUwRHZW rV7+nWubpxhm63RAsU7dbqjLQFthzzD5i+aCXA6vP5w9xFt5vDFdgq8nt6t2qRcK0K8C u25EOiAM/nE864e3aVReMICe+2lEPbEM+qdHuRr0S6Vrir+nowpEiHhA7n1EOv/GHJsg vs9hawRdzFkzbfrQStMMX8zrJ+qXhacMRtE0KWTXlF1v6MD5LykEOOedcfUF6qRjeb4i ogpPE7xdixEoJWSR9qyqnvmhxPcI0SHOCrvNxoOpVWTLtd1VE67cgA1123p9kIy00/98 +fXg== X-Forwarded-Encrypted: i=1; AFNElJ/DDEnN9O7FXDYKOzS1tKzcHyZZP4PmhqiRbCO+ddW4550pKLRTwigTNr6mIZaTkEL4p5T61nghuzM5KfA=@vger.kernel.org X-Gm-Message-State: AOJu0Yw04yoLCzlveJ40sym6nsmvgXw2D8558pwC/Wl4Gw9V6cA+yvVa Cz8adEt+RuVLXATnmfmh8hTAWvuhU9zcoB381wuFdYuHCTPd7AiUg35u/o3JiHLwOuOWwKntE3c zGmbX9nPymA8BD3rNcw== X-Received: from edvl5.prod.google.com ([2002:a05:6402:285:b0:697:de18:6de9]) (user=tarunsahu job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6402:2803:b0:691:a8bd:981d with SMTP id 4fb4d7f45d1cf-697dbad110dmr1143090a12.4.1782211923249; Tue, 23 Jun 2026 03:52:03 -0700 (PDT) Date: Tue, 23 Jun 2026 10:51:58 +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 2.55.0.rc0.786.g65d90a0328-goog Message-ID: <20260623105201.3724592-1-tarunsahu@google.com> Subject: [PATCH v5 0/2] luo: convert serialized ptr to KHOSER_PTR From: Tarun Sahu To: Mike Rapoport , Pasha Tatashin , Pratyush Yadav , Andrew Morton , Alexander Graf Cc: kexec@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Tarun Sahu Content-Type: text/plain; charset="UTF-8" Convert raw serialized_data to KHO serializeable pointer (KHOSER_PTR). This series also takes care of resolving the bug with memfd of using phys_to_virt before checking the args->serialized_data value. v5 <- v4 separate the memfd_luo fix in a new commit to allow backport if needed. v4 <- RESEND V3 use only KHOSER_COPY_PTR and have compiler time check for type excluding void * types. Remove TYPE(UN)SAFE variants. RESEND V3: Sent incorrect thread format earlier, this one is with correct one. v3 <- v2 Rebased on top of liveupdate/next v2 <- v1 Use KHOSER_PTR across liveupdate files instead of only memfd_luo Tarun Sahu (3): mm/memfd_luo: validate serialized_data before conversion kho: add KHOSER_COPY_PTR to allow phys copy of serialized ptr luo: Update serialized data to use KHOSER_PTR include/linux/kho/abi/kexec_handover.h | 11 +++++++++++ include/linux/kho/abi/luo.h | 5 +++-- include/linux/liveupdate.h | 4 ++-- kernel/liveupdate/luo_file.c | 24 ++++++++++++------------ mm/memfd_luo.c | 22 +++++++++++++--------- 5 files changed, 41 insertions(+), 25 deletions(-) base-commit: e98a9c61721c14bcd29f11f4802e52e908701f7a -- 2.55.0.rc0.786.g65d90a0328-goog