diff options
| author | Jason Gunthorpe <[email protected]> | 2024-08-29 10:19:59 -0300 |
|---|---|---|
| committer | Jason Gunthorpe <[email protected]> | 2024-09-05 11:25:40 -0300 |
| commit | 73183ad6ea51029d04b098286dcee98d715015f1 (patch) | |
| tree | 4a360ea2d7b902327bf4be5720f8629a8baa2dc1 | |
| parent | 76889bbaabf5cab981a74ed69cb3816921edc5d4 (diff) | |
iommufd: Check the domain owner of the parent before creating a nesting domain
This check was missed, before we can pass a struct iommu_domain to a
driver callback we need to validate that the domain was created by that
driver.
Fixes: bd529dbb661d ("iommufd: Add a nested HW pagetable object")
Link: https://patch.msgid.link/r/[email protected]
Reviewed-by: Nicolin Chen <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
| -rw-r--r-- | drivers/iommu/iommufd/hw_pagetable.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/iommu/iommufd/hw_pagetable.c b/drivers/iommu/iommufd/hw_pagetable.c index aefde4443671..d06bf6e6c19f 100644 --- a/drivers/iommu/iommufd/hw_pagetable.c +++ b/drivers/iommu/iommufd/hw_pagetable.c @@ -225,7 +225,8 @@ iommufd_hwpt_nested_alloc(struct iommufd_ctx *ictx, if ((flags & ~IOMMU_HWPT_FAULT_ID_VALID) || !user_data->len || !ops->domain_alloc_user) return ERR_PTR(-EOPNOTSUPP); - if (parent->auto_domain || !parent->nest_parent) + if (parent->auto_domain || !parent->nest_parent || + parent->common.domain->owner != ops) return ERR_PTR(-EINVAL); hwpt_nested = __iommufd_object_alloc( |