diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2010-11-02 08:05:51 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-02 09:19:35 -0700 |
| commit | 6a6a3e00ccd23f5b9d146a4b0591c8b61b4d0bb2 (patch) | |
| tree | 1d2cd1b800ed31ad38f5551c1feb8f085f536f48 /drivers | |
| parent | a35cb5371d340fbaa459efc78e0d00ca3cd8e05e (diff) | |
intel-iommu: Fix use after release during device attach
commit 7a6610139a1e1d9297dd1c5d178022eac36839cb upstream.
Obtain the new pgd pointer before releasing the page containing this
value.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/intel-iommu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index 4789f8e8bf7a..35463ddf10a1 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -3627,9 +3627,9 @@ static int intel_iommu_attach_device(struct iommu_domain *domain, pte = dmar_domain->pgd; if (dma_pte_present(pte)) { - free_pgtable_page(dmar_domain->pgd); dmar_domain->pgd = (struct dma_pte *) phys_to_virt(dma_pte_addr(pte)); + free_pgtable_page(pte); } dmar_domain->agaw--; } |