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x86, pci: iommu fix potential overflow in alloc_iommu()
authorPrarit Bhargava <prarit@redhat.com>
Mon, 21 Jul 2008 14:15:22 +0000 (10:15 -0400)
committerIngo Molnar <mingo@elte.hu>
Wed, 23 Jul 2008 14:45:15 +0000 (16:45 +0200)
It is possible that alloc_iommu()'s boundary_size overflows as
dma_get_seg_boundary can return 0xffffffff.  In that case, further usage of
boundary_size triggers a BUG_ON() in the iommu code.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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