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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-05-26 15:57:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-05-26 15:57:14 -0700 |
| commit | 8846af7547b52704cc50b76eecb5fe5a5128fda9 (patch) | |
| tree | d133c43032d7fa81eb845774631653a4cd614faa | |
| parent | a92c9ab69f6696b26ef0c1ca3e8b922d1fc82e86 (diff) | |
| parent | 4752354af71043e6fd72ef5490ed6da39e6cab4a (diff) | |
| download | linux-8846af7547b52704cc50b76eecb5fe5a5128fda9.tar.gz | |
Merge tag 'vfio-v6.4-rc4' of https://github.com/awilliam/linux-vfio
Pull VFIO fix from Alex Williamson:
- Test for and return error for invalid pfns through the pin pages
interface (Yan Zhao)
* tag 'vfio-v6.4-rc4' of https://github.com/awilliam/linux-vfio:
vfio/type1: check pfn valid before converting to struct page
| -rw-r--r-- | drivers/vfio/vfio_iommu_type1.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 3d4dd9420c307..0d2f805468e19 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -860,6 +860,11 @@ static int vfio_iommu_type1_pin_pages(void *iommu_data, if (ret) goto pin_unwind; + if (!pfn_valid(phys_pfn)) { + ret = -EINVAL; + goto pin_unwind; + } + ret = vfio_add_to_pfn_list(dma, iova, phys_pfn); if (ret) { if (put_pfn(phys_pfn, dma->prot) && do_accounting) |