This is a note to let you know that I've just added the patch titled
intel-iommu: Fix use after release during device attach
to the 2.6.38-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
intel-iommu-fix-use-after-release-during-device-attach.patch
and it can be found in the queue-2.6.38 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 7a6610139a1e1d9297dd1c5d178022eac36839cb Mon Sep 17 00:00:00 2001
From: Jan Kiszka <[email protected]>
Date: Tue, 2 Nov 2010 08:05:51 +0100
Subject: intel-iommu: Fix use after release during device attach
From: Jan Kiszka <[email protected]>
commit 7a6610139a1e1d9297dd1c5d178022eac36839cb upstream.
Obtain the new pgd pointer before releasing the page containing this
value.
Signed-off-by: Jan Kiszka <[email protected]>
Reviewed-by: Sheng Yang <[email protected]>
Signed-off-by: David Woodhouse <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/pci/intel-iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -3627,9 +3627,9 @@ 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--;
}
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.38/intel-iommu-fix-use-after-release-during-device-attach.patch
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