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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2010-11-02 08:05:51 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2011-01-17 16:21:42 +0000 |
| commit | 7a6610139a1e1d9297dd1c5d178022eac36839cb (patch) | |
| tree | 48ffd3762fa1961bfce3001f3783091e29142a58 /drivers/pci | |
| parent | e78bf5e6cbe837daa6ab628a5f679548742994d3 (diff) | |
| download | linux-7a6610139a1e1d9297dd1c5d178022eac36839cb.tar.gz linux-7a6610139a1e1d9297dd1c5d178022eac36839cb.tar.bz2 linux-7a6610139a1e1d9297dd1c5d178022eac36839cb.zip | |
intel-iommu: Fix use after release during device attach
Obtain the new pgd pointer before releasing the page containing this
value.
Cc: stable@kernel.org
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>
Diffstat (limited to 'drivers/pci')
| -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--; } |