forked from luck/tmp_suning_uos_patched
7c03f42846
Passing zero for the size to vfio_find_dma() isn't compatible with matching the start address of an existing vfio_dma. Doing so triggers a corner case. In vfio_find_dma(), when the start address is equal to dma->iova and size is 0, check for the end of search range makes it to take wrong side of RB-tree. That fails the search even though the address is present in mapped dma ranges. Due to this, in vfio_dma_do_unmap(), while checking boundary conditions, size should be set to 1 for verifying start address of unmap range. vfio_find_dma() is also used to verify last address in unmap range with size = 0, but in that case address to be searched is calculated with start + size - 1 and so it works correctly. Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com> Signed-off-by: Neo Jia <cjia@nvidia.com> [aw: changelog tweak] Signed-off-by: Alex Williamson <alex.williamson@redhat.com> |
||
|---|---|---|
| .. | ||
| mdev | ||
| pci | ||
| platform | ||
| Kconfig | ||
| Makefile | ||
| vfio_iommu_spapr_tce.c | ||
| vfio_iommu_type1.c | ||
| vfio_spapr_eeh.c | ||
| vfio.c | ||
| virqfd.c | ||