Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | Date | Tue, 02 Nov 2010 08:05:51 +0100 | From | Jan Kiszka <> | Subject | [PATCH] intel-iommu: Fix use after release during device attach |
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From: Jan Kiszka <jan.kiszka@siemens.com>
Obtail the new pgd pointer before releasing the page containing this value.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> ---
Who is taking care of this? The kvm tree?
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 4789f8e..35463dd 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--; } -- 1.7.1
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