If we fail to allocate an indirect buffer (ib) when updating the ptes, return an error instead of trying to use the ib. Avoids a null pointer dereference.
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=58621 Signed-off-by: Alex Deucher <[email protected]> Cc: [email protected] --- drivers/gpu/drm/radeon/radeon_gart.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c index cd7489b..3044e50 100644 --- a/drivers/gpu/drm/radeon/radeon_gart.c +++ b/drivers/gpu/drm/radeon/radeon_gart.c @@ -1209,6 +1209,8 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev, return -ENOMEM; r = radeon_ib_get(rdev, R600_RING_TYPE_DMA_INDEX, &ib, NULL, ndw * 4); + if (r) + return r; ib.length_dw = 0; r = radeon_vm_update_pdes(rdev, vm, &ib, bo_va->soffset, bo_va->eoffset); -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
