diff options
| -rw-r--r-- | drivers/iommu/iommufd/main.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/iommu/iommufd/main.c b/drivers/iommu/iommufd/main.c index 0fb81a905cb1..69c2195e77ca 100644 --- a/drivers/iommu/iommufd/main.c +++ b/drivers/iommu/iommufd/main.c @@ -71,6 +71,15 @@ struct iommufd_object *_iommufd_object_alloc_ucmd(struct iommufd_ucmd *ucmd, if (WARN_ON(ucmd->new_obj)) return ERR_PTR(-EBUSY); + /* + * An abort op means that its caller needs to invoke it within a lock in + * the caller. So it doesn't work with _iommufd_object_alloc_ucmd() that + * will invoke the abort op in iommufd_object_abort_and_destroy(), which + * must be outside the caller's lock. + */ + if (WARN_ON(iommufd_object_ops[type].abort)) + return ERR_PTR(-EOPNOTSUPP); + new_obj = _iommufd_object_alloc(ucmd->ictx, size, type); if (IS_ERR(new_obj)) return new_obj; |