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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-10-25 22:33:07 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-10-25 22:39:16 -0700 |
| commit | 012d64ff68f304df1c35ce5902f5023dc14b643f (patch) | |
| tree | da1e6691c0c9a4d087b441762ce9df8974178339 /arch/sparc64 | |
| parent | 4130a4b206e7c628482aa12ec30949382c8cdc5e (diff) | |
| download | linux-012d64ff68f304df1c35ce5902f5023dc14b643f.tar.bz2 | |
[SPARC64]: Fix memory corruption in pci_4u_free_consistent().
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>
Diffstat (limited to 'arch/sparc64')
| -rw-r--r-- | arch/sparc64/kernel/pci_iommu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc64/kernel/pci_iommu.c b/arch/sparc64/kernel/pci_iommu.c index 82e5455134c6..2e7f1427088a 100644 --- a/arch/sparc64/kernel/pci_iommu.c +++ b/arch/sparc64/kernel/pci_iommu.c @@ -281,7 +281,7 @@ static void pci_4u_free_consistent(struct pci_dev *pdev, size_t size, void *cpu, 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); |