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Subject[PATCH] gpu/drm/radeon:Fix null pointer risk
Date
If the null pointer is not judged in advance,
there is a risk that the pointer will cross
the boundary

Signed-off-by: Wen Zhiwei <wenzhiwei@kylinos.cn>
---
drivers/gpu/drm/radeon/radeon_vm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
index bb53016f3138..d3d342041adf 100644
--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -951,7 +951,7 @@ int radeon_vm_bo_update(struct radeon_device *rdev,

if (mem->mem_type == TTM_PL_TT) {
bo_va->flags |= RADEON_VM_PAGE_SYSTEM;
- if (!(bo_va->bo->flags & (RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC)))
+ if (bo_va->bo && !(bo_va->bo->flags & (RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC)))
bo_va->flags |= RADEON_VM_PAGE_SNOOPED;

} else {
--
2.30.0
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