linux-kernel - [PATCH v3 0/5] iommu: Fix domain check on release

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240305013305.204605-1-baolu.lu@linux.intel.com>
Date: Tue,  5 Mar 2024 09:33:00 +0800
From: Lu Baolu <baolu.lu@...ux.intel.com>
To: Joerg Roedel <joro@...tes.org>,
	Will Deacon <will@...nel.org>,
	Robin Murphy <robin.murphy@....com>,
	Jason Gunthorpe <jgg@...pe.ca>,
	Kevin Tian <kevin.tian@...el.com>,
	Eric Badger <ebadger@...estorage.com>
Cc: iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Lu Baolu <baolu.lu@...ux.intel.com>
Subject: [PATCH v3 0/5] iommu: Fix domain check on release

This is a follow-up to the discussion thread here:

https://lore.kernel.org/linux-iommu/20240221154012.GC13491@ziepe.ca/

It fixes a NULL pointer dereference issue in the Intel iommu driver and
strengthens the iommu core to possibly prevent similar failures in other
iommu drivers.

There are two parts of this topic:
[x] Introduce release_domain and fix a kernel NULL pointer dereference
    issue in the intel iommu driver.
[x] Follow-up patches to cleanup intel iommu driver.

Best regards,
baolu

Change log:
v3:
 - Avoid global IOTLB and PASID cache invalidation in normal release
   path to mitigate the impact on other devices.
 - Comment and code refinements.

v2:
 - https://lore.kernel.org/linux-iommu/20240229094613.121575-1-baolu.lu@linux.intel.com/
 - https://lore.kernel.org/linux-iommu/20240229094804.121610-1-baolu.lu@linux.intel.com/
 - The scalable mode context entry should be removed in the release path
   as it's not part of the blocking domain.

v1: https://lore.kernel.org/linux-iommu/20240223051302.177596-1-baolu.lu@linux.intel.com/

Lu Baolu (5):
  iommu: Add static iommu_ops->release_domain
  iommu/vt-d: Fix NULL domain on device release
  iommu/vt-d: Setup scalable mode context entry in probe path
  iommu/vt-d: Remove scalable mode context entry setup from attach_dev
  iommu/vt-d: Remove scalabe mode in domain_context_clear_one()

 include/linux/iommu.h       |   1 +
 drivers/iommu/intel/pasid.h |   2 +
 drivers/iommu/intel/iommu.c | 214 +++++++++++-------------------------
 drivers/iommu/intel/pasid.c | 202 ++++++++++++++++++++++++++++++++++
 drivers/iommu/iommu.c       |  19 +++-
 5 files changed, 283 insertions(+), 155 deletions(-)

-- 
2.34.1