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Merge tag 'for-linus-5.2-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-microblaze.git]
/
drivers
/
gpu
/
drm
/
ttm
/
ttm_bo_vm.c
diff --git
a/drivers/gpu/drm/ttm/ttm_bo_vm.c
b/drivers/gpu/drm/ttm/ttm_bo_vm.c
index
e86a29a
..
6dacff4
100644
(file)
--- a/
drivers/gpu/drm/ttm/ttm_bo_vm.c
+++ b/
drivers/gpu/drm/ttm/ttm_bo_vm.c
@@
-432,6
+432,9
@@
int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma,
struct ttm_buffer_object *bo;
int ret;
+ if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET_START))
+ return -EINVAL;
+
bo = ttm_bo_vm_lookup(bdev, vma->vm_pgoff, vma_pages(vma));
if (unlikely(!bo))
return -EINVAL;