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kbuild: remove cc-option test of -fno-stack-protector 

Some Makefiles already pass -fno-stack-protector unconditionally.
For example, arch/arm64/kernel/vdso/Makefile, arch/x86/xen/Makefile.

No problem report so far about hard-coding this option. So, we can
assume all supported compilers know -fno-stack-protector.

GCC 4.8 and Clang support this option (https://godbolt.org/z/_HDGzN)

Get rid of cc-option from -fno-stack-protector.

Remove CONFIG_CC_HAS_STACKPROTECTOR_NONE, which is always 'y'.

Note:
arch/mips/vdso/Makefile adds -fno-stack-protector twice, first
unconditionally, and second conditionally. I removed the second one.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
This commit is contained in:
Masahiro Yamada 2020-06-27 03:59:12 +09:00
parent dd7699e37f
commit 893ab00439
23 changed files with 29 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/kbuild/kconfig-language.rst
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@ -540,8 +540,8 @@ followed by a test macro::
If you need to expose a compiler capability to makefiles and/or C source files, If you need to expose a compiler capability to makefiles and/or C source files,
`CC_HAS_` is the recommended prefix for the config option:: `CC_HAS_` is the recommended prefix for the config option::
config CC_HAS_STACKPROTECTOR_NONE config CC_HAS_ASM_GOTO
def_bool $(cc-option,-fno-stack-protector) def_bool $(success,$(srctree)/scripts/gcc-goto.sh $(CC))
Build as module only Build as module only
~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~

2
Makefile
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@ -762,7 +762,7 @@ ifneq ($(CONFIG_FRAME_WARN),0)
KBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN) KBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN)
endif endif
stackp-flags-$(CONFIG_CC_HAS_STACKPROTECTOR_NONE) := -fno-stack-protector stackp-flags-y := -fno-stack-protector
stackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector stackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector
stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong

3
arch/Kconfig
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@ -478,9 +478,6 @@ config HAVE_STACKPROTECTOR
An arch should select this symbol if: An arch should select this symbol if:
- it has implemented a stack canary (e.g. __stack_chk_guard) - it has implemented a stack canary (e.g. __stack_chk_guard)
config CC_HAS_STACKPROTECTOR_NONE
def_bool $(cc-option,-fno-stack-protector)
config STACKPROTECTOR config STACKPROTECTOR
bool "Stack Protector buffer overflow detection" bool "Stack Protector buffer overflow detection"
depends on HAVE_STACKPROTECTOR depends on HAVE_STACKPROTECTOR

3
arch/arm/boot/compressed/Makefile
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@ -84,9 +84,8 @@ endif
# -fstack-protector-strong triggers protection checks in this code, # -fstack-protector-strong triggers protection checks in this code,
# but it is being used too early to link to meaningful stack_chk logic. # but it is being used too early to link to meaningful stack_chk logic.
nossp-flags-$(CONFIG_CC_HAS_STACKPROTECTOR_NONE) := -fno-stack-protector
$(foreach o, $(libfdt_objs) atags_to_fdt.o, \ $(foreach o, $(libfdt_objs) atags_to_fdt.o, \
$(eval CFLAGS_$(o) := -I $(srctree)/scripts/dtc/libfdt $(nossp-flags-y))) $(eval CFLAGS_$(o) := -I $(srctree)/scripts/dtc/libfdt -fno-stack-protector))
# These were previously generated C files. When you are building the kernel # These were previously generated C files. When you are building the kernel
# with O=, make sure to remove the stale files in the output tree. Otherwise, # with O=, make sure to remove the stale files in the output tree. Otherwise,

3
arch/mips/vdso/Makefile
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@ -35,8 +35,7 @@ cflags-vdso := $(ccflags-vdso) \
-O3 -g -fPIC -fno-strict-aliasing -fno-common -fno-builtin -G 0 \ -O3 -g -fPIC -fno-strict-aliasing -fno-common -fno-builtin -G 0 \
-mrelax-pic-calls $(call cc-option, -mexplicit-relocs) \ -mrelax-pic-calls $(call cc-option, -mexplicit-relocs) \
-fno-stack-protector -fno-jump-tables -DDISABLE_BRANCH_PROFILING \ -fno-stack-protector -fno-jump-tables -DDISABLE_BRANCH_PROFILING \
$(call cc-option, -fno-asynchronous-unwind-tables) \ $(call cc-option, -fno-asynchronous-unwind-tables)
$(call cc-option, -fno-stack-protector)
aflags-vdso := $(ccflags-vdso) \ aflags-vdso := $(ccflags-vdso) \
-D__ASSEMBLY__ -Wa,-gdwarf-2 -D__ASSEMBLY__ -Wa,-gdwarf-2

2
arch/powerpc/kernel/Makefile
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@ -16,7 +16,7 @@ CFLAGS_prom_init.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
CFLAGS_btext.o += $(DISABLE_LATENT_ENTROPY_PLUGIN) CFLAGS_btext.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
CFLAGS_prom.o += $(DISABLE_LATENT_ENTROPY_PLUGIN) CFLAGS_prom.o += $(DISABLE_LATENT_ENTROPY_PLUGIN)
CFLAGS_prom_init.o += $(call cc-option, -fno-stack-protector) CFLAGS_prom_init.o += -fno-stack-protector
CFLAGS_prom_init.o += -DDISABLE_BRANCH_PROFILING CFLAGS_prom_init.o += -DDISABLE_BRANCH_PROFILING
CFLAGS_prom_init.o += -ffreestanding CFLAGS_prom_init.o += -ffreestanding

2
arch/powerpc/platforms/powermac/Makefile
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@ -1,6 +1,6 @@
# SPDX-License-Identifier: GPL-2.0 # SPDX-License-Identifier: GPL-2.0
CFLAGS_bootx_init.o += -fPIC CFLAGS_bootx_init.o += -fPIC
CFLAGS_bootx_init.o += $(call cc-option, -fno-stack-protector) CFLAGS_bootx_init.o += -fno-stack-protector
KASAN_SANITIZE_bootx_init.o := n KASAN_SANITIZE_bootx_init.o := n

4
arch/sparc/vdso/Makefile
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@ -54,7 +54,7 @@ $(obj)/vdso-image-%.c: $(obj)/vdso%.so.dbg $(obj)/vdso%.so $(obj)/vdso2c FORCE
# optimize sibling calls. # optimize sibling calls.
# #
CFL := $(PROFILING) -mcmodel=medlow -fPIC -O2 -fasynchronous-unwind-tables -m64 \ CFL := $(PROFILING) -mcmodel=medlow -fPIC -O2 -fasynchronous-unwind-tables -m64 \
$(filter -g%,$(KBUILD_CFLAGS)) $(call cc-option, -fno-stack-protector) \ $(filter -g%,$(KBUILD_CFLAGS)) -fno-stack-protector \
-fno-omit-frame-pointer -foptimize-sibling-calls \ -fno-omit-frame-pointer -foptimize-sibling-calls \
-DDISABLE_BRANCH_PROFILING -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING -DBUILD_VDSO
@ -93,7 +93,7 @@ KBUILD_CFLAGS_32 := $(filter-out -fno-pic,$(KBUILD_CFLAGS_32))
KBUILD_CFLAGS_32 := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS_32)) KBUILD_CFLAGS_32 := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS_32))
KBUILD_CFLAGS_32 := $(filter-out $(SPARC_REG_CFLAGS),$(KBUILD_CFLAGS_32)) KBUILD_CFLAGS_32 := $(filter-out $(SPARC_REG_CFLAGS),$(KBUILD_CFLAGS_32))
KBUILD_CFLAGS_32 += -m32 -msoft-float -fpic KBUILD_CFLAGS_32 += -m32 -msoft-float -fpic
KBUILD_CFLAGS_32 += $(call cc-option, -fno-stack-protector) KBUILD_CFLAGS_32 += -fno-stack-protector
KBUILD_CFLAGS_32 += $(call cc-option, -foptimize-sibling-calls) KBUILD_CFLAGS_32 += $(call cc-option, -foptimize-sibling-calls)
KBUILD_CFLAGS_32 += -fno-omit-frame-pointer KBUILD_CFLAGS_32 += -fno-omit-frame-pointer
KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING

3
arch/um/Makefile
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@ -121,8 +121,7 @@ LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib $(call cc-option, -no-pie) LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib $(call cc-option, -no-pie)
CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \ CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
$(call cc-option, -fno-stack-protector,) \ -fno-stack-protector $(call cc-option, -fno-stack-protector-all)
$(call cc-option, -fno-stack-protector-all,)
# Options used by linker script # Options used by linker script
export LDS_START := $(START) export LDS_START := $(START)

2
arch/x86/Makefile
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@ -37,7 +37,7 @@ REALMODE_CFLAGS := $(M16_CFLAGS) -g -Os -DDISABLE_BRANCH_PROFILING \
-mno-mmx -mno-sse -mno-mmx -mno-sse
REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), -ffreestanding) REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), -ffreestanding)
REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), -fno-stack-protector) REALMODE_CFLAGS += -fno-stack-protector
REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), -Wno-address-of-packed-member) REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), -Wno-address-of-packed-member)
REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), $(cc_stack_align4)) REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), $(cc_stack_align4))
export REALMODE_CFLAGS export REALMODE_CFLAGS

2
arch/x86/boot/compressed/Makefile
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@ -36,7 +36,7 @@ cflags-$(CONFIG_X86_64) := -mcmodel=small
KBUILD_CFLAGS += $(cflags-y) KBUILD_CFLAGS += $(cflags-y)
KBUILD_CFLAGS += -mno-mmx -mno-sse KBUILD_CFLAGS += -mno-mmx -mno-sse
KBUILD_CFLAGS += $(call cc-option,-ffreestanding) KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) KBUILD_CFLAGS += -fno-stack-protector
KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
KBUILD_CFLAGS += $(call cc-disable-warning, gnu) KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
KBUILD_CFLAGS += -Wno-pointer-sign KBUILD_CFLAGS += -Wno-pointer-sign

4
arch/x86/entry/vdso/Makefile
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@ -82,7 +82,7 @@ $(obj)/vdso-image-%.c: $(obj)/vdso%.so.dbg $(obj)/vdso%.so $(obj)/vdso2c FORCE
# optimize sibling calls. # optimize sibling calls.
# #
CFL := $(PROFILING) -mcmodel=small -fPIC -O2 -fasynchronous-unwind-tables -m64 \ CFL := $(PROFILING) -mcmodel=small -fPIC -O2 -fasynchronous-unwind-tables -m64 \
$(filter -g%,$(KBUILD_CFLAGS)) $(call cc-option, -fno-stack-protector) \ $(filter -g%,$(KBUILD_CFLAGS)) -fno-stack-protector \
-fno-omit-frame-pointer -foptimize-sibling-calls \ -fno-omit-frame-pointer -foptimize-sibling-calls \
-DDISABLE_BRANCH_PROFILING -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING -DBUILD_VDSO
@ -151,7 +151,7 @@ KBUILD_CFLAGS_32 := $(filter-out -mfentry,$(KBUILD_CFLAGS_32))
KBUILD_CFLAGS_32 := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS_32)) KBUILD_CFLAGS_32 := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS_32))
KBUILD_CFLAGS_32 := $(filter-out $(RETPOLINE_CFLAGS),$(KBUILD_CFLAGS_32)) KBUILD_CFLAGS_32 := $(filter-out $(RETPOLINE_CFLAGS),$(KBUILD_CFLAGS_32))
KBUILD_CFLAGS_32 += -m32 -msoft-float -mregparm=0 -fpic KBUILD_CFLAGS_32 += -m32 -msoft-float -mregparm=0 -fpic
KBUILD_CFLAGS_32 += $(call cc-option, -fno-stack-protector) KBUILD_CFLAGS_32 += -fno-stack-protector
KBUILD_CFLAGS_32 += $(call cc-option, -foptimize-sibling-calls) KBUILD_CFLAGS_32 += $(call cc-option, -foptimize-sibling-calls)
KBUILD_CFLAGS_32 += -fno-omit-frame-pointer KBUILD_CFLAGS_32 += -fno-omit-frame-pointer
KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING

3
arch/x86/kernel/cpu/Makefile
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@ -17,8 +17,7 @@ KCOV_INSTRUMENT_perf_event.o := n
KCSAN_SANITIZE_common.o := n KCSAN_SANITIZE_common.o := n
# Make sure load_percpu_segment has no stackprotector # Make sure load_percpu_segment has no stackprotector
nostackp := $(call cc-option, -fno-stack-protector) CFLAGS_common.o := -fno-stack-protector
CFLAGS_common.o := $(nostackp)
obj-y := cacheinfo.o scattered.o topology.o obj-y := cacheinfo.o scattered.o topology.o
obj-y += common.o obj-y += common.o

2
arch/x86/lib/Makefile
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@ -24,7 +24,7 @@ ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_cmdline.o = -pg CFLAGS_REMOVE_cmdline.o = -pg
endif endif
CFLAGS_cmdline.o := $(call cc-option, -fno-stack-protector) CFLAGS_cmdline.o := -fno-stack-protector
endif endif
inat_tables_script = $(srctree)/arch/x86/tools/gen-insn-attr-x86.awk inat_tables_script = $(srctree)/arch/x86/tools/gen-insn-attr-x86.awk

7
arch/x86/mm/Makefile
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@ -22,10 +22,9 @@ obj-y := init.o init_$(BITS).o fault.o ioremap.o extable.o mmap.o \
obj-y += pat/ obj-y += pat/
# Make sure __phys_addr has no stackprotector # Make sure __phys_addr has no stackprotector
nostackp := $(call cc-option, -fno-stack-protector) CFLAGS_physaddr.o := -fno-stack-protector
CFLAGS_physaddr.o := $(nostackp) CFLAGS_setup_nx.o := -fno-stack-protector
CFLAGS_setup_nx.o := $(nostackp) CFLAGS_mem_encrypt_identity.o := -fno-stack-protector
CFLAGS_mem_encrypt_identity.o := $(nostackp)
CFLAGS_fault.o := -I $(srctree)/$(src)/../include/asm/trace CFLAGS_fault.o := -I $(srctree)/$(src)/../include/asm/trace

3
arch/x86/power/Makefile
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@ -3,8 +3,7 @@ OBJECT_FILES_NON_STANDARD_hibernate_asm_$(BITS).o := y
# __restore_processor_state() restores %gs after S3 resume and so should not # __restore_processor_state() restores %gs after S3 resume and so should not
# itself be stack-protected # itself be stack-protected
nostackp := $(call cc-option, -fno-stack-protector) CFLAGS_cpu.o := -fno-stack-protector
CFLAGS_cpu.o := $(nostackp)
obj-$(CONFIG_PM_SLEEP) += cpu.o obj-$(CONFIG_PM_SLEEP) += cpu.o
obj-$(CONFIG_HIBERNATION) += hibernate_$(BITS).o hibernate_asm_$(BITS).o hibernate.o obj-$(CONFIG_HIBERNATION) += hibernate_$(BITS).o hibernate_asm_$(BITS).o hibernate.o

2
arch/x86/purgatory/Makefile
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@ -34,7 +34,7 @@ KCOV_INSTRUMENT := n
PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel
PURGATORY_CFLAGS := -mcmodel=large -ffreestanding -fno-zero-initialized-in-bss PURGATORY_CFLAGS := -mcmodel=large -ffreestanding -fno-zero-initialized-in-bss
PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN) -DDISABLE_BRANCH_PROFILING PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN) -DDISABLE_BRANCH_PROFILING
PURGATORY_CFLAGS += $(call cc-option,-fno-stack-protector) PURGATORY_CFLAGS += -fno-stack-protector
# Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That # Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That
# in turn leaves some undefined symbols like __fentry__ in purgatory and not # in turn leaves some undefined symbols like __fentry__ in purgatory and not

2
arch/x86/um/vdso/Makefile
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@ -42,7 +42,7 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
# optimize sibling calls. # optimize sibling calls.
# #
CFL := $(PROFILING) -mcmodel=small -fPIC -O2 -fasynchronous-unwind-tables -m64 \ CFL := $(PROFILING) -mcmodel=small -fPIC -O2 -fasynchronous-unwind-tables -m64 \
$(filter -g%,$(KBUILD_CFLAGS)) $(call cc-option, -fno-stack-protector) \ $(filter -g%,$(KBUILD_CFLAGS)) -fno-stack-protector \
-fno-omit-frame-pointer -foptimize-sibling-calls -fno-omit-frame-pointer -foptimize-sibling-calls
$(vobjs): KBUILD_CFLAGS += $(CFL) $(vobjs): KBUILD_CFLAGS += $(CFL)

5
arch/x86/xen/Makefile
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@ -9,9 +9,8 @@ CFLAGS_REMOVE_irq.o = -pg
endif endif
# Make sure early boot has no stackprotector # Make sure early boot has no stackprotector
nostackp := $(call cc-option, -fno-stack-protector) CFLAGS_enlighten_pv.o := -fno-stack-protector
CFLAGS_enlighten_pv.o := $(nostackp) CFLAGS_mmu_pv.o := -fno-stack-protector
CFLAGS_mmu_pv.o := $(nostackp)
obj-y += enlighten.o obj-y += enlighten.o
obj-y += mmu.o obj-y += mmu.o

2
drivers/firmware/efi/libstub/Makefile
View File

@ -30,7 +30,7 @@ KBUILD_CFLAGS := $(cflags-y) -Os -DDISABLE_BRANCH_PROFILING \
-include $(srctree)/drivers/firmware/efi/libstub/hidden.h \ -include $(srctree)/drivers/firmware/efi/libstub/hidden.h \
-D__NO_FORTIFY \ -D__NO_FORTIFY \
$(call cc-option,-ffreestanding) \ $(call cc-option,-ffreestanding) \
$(call cc-option,-fno-stack-protector) \ -fno-stack-protector \
$(call cc-option,-fno-addrsig) \ $(call cc-option,-fno-addrsig) \
-D__DISABLE_EXPORTS -D__DISABLE_EXPORTS

3
drivers/xen/Makefile
View File

@ -5,8 +5,7 @@ obj-y += mem-reservation.o
obj-y += events/ obj-y += events/
obj-y += xenbus/ obj-y += xenbus/
nostackp := $(call cc-option, -fno-stack-protector) CFLAGS_features.o := -fno-stack-protector
CFLAGS_features.o := $(nostackp)
dom0-$(CONFIG_ARM64) += arm-device.o dom0-$(CONFIG_ARM64) += arm-device.o
dom0-$(CONFIG_PCI) += pci.o dom0-$(CONFIG_PCI) += pci.o

4
lib/Makefile
View File

@ -22,7 +22,7 @@ KCOV_INSTRUMENT_fault-inject.o := n
ifdef CONFIG_AMD_MEM_ENCRYPT ifdef CONFIG_AMD_MEM_ENCRYPT
KASAN_SANITIZE_string.o := n KASAN_SANITIZE_string.o := n
CFLAGS_string.o := $(call cc-option, -fno-stack-protector) CFLAGS_string.o := -fno-stack-protector
endif endif
# Used by KCSAN while enabled, avoid recursion. # Used by KCSAN while enabled, avoid recursion.
@ -300,7 +300,7 @@ endif
UBSAN_SANITIZE_ubsan.o := n UBSAN_SANITIZE_ubsan.o := n
KASAN_SANITIZE_ubsan.o := n KASAN_SANITIZE_ubsan.o := n
KCSAN_SANITIZE_ubsan.o := n KCSAN_SANITIZE_ubsan.o := n
CFLAGS_ubsan.o := $(call cc-option, -fno-stack-protector) $(DISABLE_STACKLEAK_PLUGIN) CFLAGS_ubsan.o := -fno-stack-protector $(DISABLE_STACKLEAK_PLUGIN)
obj-$(CONFIG_SBITMAP) += sbitmap.o obj-$(CONFIG_SBITMAP) += sbitmap.o

2
mm/kasan/Makefile
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@ -16,7 +16,7 @@ CFLAGS_REMOVE_tags_report.o = $(CC_FLAGS_FTRACE)
# Function splitter causes unnecessary splits in __asan_load1/__asan_store1 # Function splitter causes unnecessary splits in __asan_load1/__asan_store1
# see: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63533 # see: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63533
CC_FLAGS_KASAN_RUNTIME := $(call cc-option, -fno-conserve-stack) CC_FLAGS_KASAN_RUNTIME := $(call cc-option, -fno-conserve-stack)
CC_FLAGS_KASAN_RUNTIME += $(call cc-option, -fno-stack-protector) CC_FLAGS_KASAN_RUNTIME += -fno-stack-protector
# Disable branch tracing to avoid recursion. # Disable branch tracing to avoid recursion.
CC_FLAGS_KASAN_RUNTIME += -DDISABLE_BRANCH_PROFILING CC_FLAGS_KASAN_RUNTIME += -DDISABLE_BRANCH_PROFILING