2.6.35-longterm review patch. If anyone has any objections, please let me know.
------------------ Date: Tue, 2 Nov 2010 08:05:51 +0100 Subject: [PATCH] intel-iommu: Fix use after release during device attach Obtain the new pgd pointer before releasing the page containing this value. Cc: [email protected] Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andi Kleen <[email protected]> Reviewed-by: Sheng Yang <[email protected]> Signed-off-by: David Woodhouse <[email protected]> --- drivers/pci/intel-iommu.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) Index: linux-2.6.35.y/drivers/pci/intel-iommu.c =================================================================== --- linux-2.6.35.y.orig/drivers/pci/intel-iommu.c +++ linux-2.6.35.y/drivers/pci/intel-iommu.c @@ -3638,9 +3638,9 @@ static int intel_iommu_attach_device(str 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--; } _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
