| Message ID | 20250307224125.111430-2-jonathan.cavitt@intel.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | drm/xe/xe_vm: Implement xe_vm_get_faults_ioctl | expand |
diff --git a/drivers/gpu/drm/xe/xe_gt_pagefault.c b/drivers/gpu/drm/xe/xe_gt_pagefault.c index c5ad9a0a89c2..a4e688e72efd 100644 --- a/drivers/gpu/drm/xe/xe_gt_pagefault.c +++ b/drivers/gpu/drm/xe/xe_gt_pagefault.c @@ -237,6 +237,11 @@ static int handle_pagefault(struct xe_gt *gt, struct pagefault *pf) goto unlock_vm; } + if (xe_vma_read_only(vma) && pf->access_type != ACCESS_TYPE_READ) { + err = -EPERM; + goto unlock_vm; + } + atomic = access_is_atomic(pf->access_type); if (xe_vma_is_cpu_addr_mirror(vma))
The page fault handler should reject write/atomic access to read only VMAs. Add code to handle this in handle_pagefault after the VMA lookup. Fixes: 3d420e9fa848 ("drm/xe: Rework GPU page fault handling") Signed-off-by: Jonathan Cavitt <jonathan.cavitt@intel.com> Suggested-by: Matthew Brost <matthew.brost@intel.com> --- drivers/gpu/drm/xe/xe_gt_pagefault.c | 5 +++++ 1 file changed, 5 insertions(+)