The left shift int 32 bit integer constants 1 is evaluated using 32 bit
arithmetic and then assigned to a 64 bit unsigned integer. In the case
where the shift is 32 or more this can lead to an overflow. Avoid this
by shifting using the BIT_ULL macro instead.
Fixes: 6c3ac7bcfcff ("drm/nouveau/gsp: support deeper page tables in
COPY_SERVER_RESERVED_PDES")
Signed-off-by: Colin Ian King <[email protected]>
---
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/vmm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/vmm.c
b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/vmm.c
index 52f2e5f14517..f25ea610cd99 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/vmm.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/vmm.c
@@ -121,7 +121,7 @@ r535_mmu_vaspace_new(struct nvkm_vmm *vmm, u32 handle, bool
external)
page_shift -= desc->bits;
ctrl->levels[i].physAddress = pd->pt[0]->addr;
- ctrl->levels[i].size = (1 << desc->bits) * desc->size;
+ ctrl->levels[i].size = BIT_ULL(desc->bits) * desc->size;
ctrl->levels[i].aperture = 1;
ctrl->levels[i].pageShift = page_shift;
--
2.49.0
