iommu/vt-d: Fix possible use-after-free of private domain

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Multiple devices might share a private domain. One real example
is a pci bridge and all devices behind it. When remove a private
domain, make sure that it has been detached from all devices to
avoid use-after-free case.

Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Fixes: 942067f1b6 ("iommu/vt-d: Identify default domains replaced with private")
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Lu Baolu 2019-08-06 08:14:09 +08:00 • committed by Joerg Roedel

parent ae23bfb68f

commit 3a18844dcf

1 changed files with 2 additions and 1 deletions

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drivers/iommu/intel-iommu.c

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