The kernel ABI was extended to allow pass tagged user pointers.
Untag the pointers in this function.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
drivers/staging/media/atomisp/pci/hmm/hmm_bo.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c b/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
index 492b76c29490..6fce8c95be1d 100644
--- a/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
+++ b/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
@@ -997,6 +997,9 @@ static int alloc_user_pages(struct hmm_buffer_object *bo,
* Handle frame buffer allocated in other kerenl space driver
* and map to user space
*/
+
+ userptr = untagged_addr(userptr);
+
if (vma->vm_flags & (VM_IO | VM_PFNMAP)) {
page_nr = get_pfnmap_pages(current, current->mm,
(unsigned long)userptr,
--
2.26.2
