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Subject[PATCH] drm/i915: disable KASAN for handlers
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 <>
Cc: Martin Liska <>
Cc: Zhenyu Wang <>
Cc: Zhi Wang <>
Cc: Daniel Vetter <>
Cc: Jani Nikula <>
Cc: David Airlie <>
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
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