| Date | Tue, 31 Oct 2006 21:34:04 -0800 | From | Chris Wright <> | Subject | [PATCH 24/61] SPARC64: Fix memory corruption in pci_4u_free_consistent(). |
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-stable review patch. If anyone has any objections, please let us know. ------------------
From: David Miller <davem@davemloft.net>
The second argument to free_npages() was being incorrectly calculated, which would thus access far past the end of the arena->map[] bitmap.
Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Chris Wright <chrisw@sous-sol.org>
--- arch/sparc64/kernel/pci_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-2.6.18.1.orig/arch/sparc64/kernel/pci_iommu.c +++ linux-2.6.18.1/arch/sparc64/kernel/pci_iommu.c @@ -281,7 +281,7 @@ static void pci_4u_free_consistent(struc spin_lock_irqsave(&iommu->lock, flags); - free_npages(iommu, dvma, npages); + free_npages(iommu, dvma - iommu->page_table_map_base, npages); spin_unlock_irqrestore(&iommu->lock, flags); -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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