Handlers are currently the only blocker to compile the kernel with gcc 7 and KASAN+use-after-scope enabled: drivers/gpu/drm/i915/gvt/handlers.c:2200:1: error: the frame size of 43760 bytes is larger than 2048 bytes [-Werror=frame-larger-than=] drivers/gpu/drm/i915/gvt/handlers.c:2402:1: error: the frame size of 9400 bytes is larger than 2048 bytes [-Werror=frame-larger-than=] drivers/gpu/drm/i915/gvt/handlers.c:2628:1: error: the frame size of 11256 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]
It is due to many expansions of MMIO_* macros in init_generic_mmio_info. INTEL_GVT_MMIO_OFFSET generates for each such line a __reg and an offset. There are too many for KASAN to keep up. So disable KASAN for this file. Signed-off-by: Jiri Slaby <[email protected]> Cc: Martin Liska <[email protected]> Cc: Zhenyu Wang <[email protected]> Cc: Zhi Wang <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Jani Nikula <[email protected]> Cc: David Airlie <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] --- drivers/gpu/drm/i915/gvt/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/gvt/Makefile b/drivers/gpu/drm/i915/gvt/Makefile index b123c20e2097..942f1849d194 100644 --- a/drivers/gpu/drm/i915/gvt/Makefile +++ b/drivers/gpu/drm/i915/gvt/Makefile @@ -6,3 +6,5 @@ GVT_SOURCE := gvt.o aperture_gm.o handlers.o vgpu.o trace_points.o firmware.o \ ccflags-y += -I$(src) -I$(src)/$(GVT_DIR) -Wall i915-y += $(addprefix $(GVT_DIR)/, $(GVT_SOURCE)) obj-$(CONFIG_DRM_I915_GVT_KVMGT) += $(GVT_DIR)/kvmgt.o + +KASAN_SANITIZE_handlers.o := n -- 2.12.2
