Commit 8a16c09e authored by Andrey Konovalov's avatar Andrey Konovalov Committed by Linus Torvalds
Browse files

kasan: consistently disable debugging features 



KASAN is incompatible with some kernel debugging/tracing features.

There's been multiple patches that disable those feature for some of
KASAN files one by one.  Instead of prolonging that, disable these
features for all KASAN files at once.

Reported-by: default avatarRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: default avatarAndrey Konovalov <andreyknvl@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Leon Romanovsky <leonro@mellanox.com>
Link: http://lkml.kernel.org/r/29bd753d5ff5596425905b0b07f51153e2345cc1.1589297433.git.andreyknvl@google.com


Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 5e698222

mm/kasan/Makefile

+10 −5
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0

KASAN_SANITIZE := n

UBSAN_SANITIZE_common.o := n

UBSAN_SANITIZE_generic.o := n

UBSAN_SANITIZE_generic_report.o := n

UBSAN_SANITIZE_tags.o := n

UBSAN_SANITIZE := n

KCOV_INSTRUMENT := n



# Disable ftrace to avoid recursion.

CFLAGS_REMOVE_common.o = $(CC_FLAGS_FTRACE)

CFLAGS_REMOVE_generic.o = $(CC_FLAGS_FTRACE)

CFLAGS_REMOVE_generic_report.o = $(CC_FLAGS_FTRACE)

CFLAGS_REMOVE_init.o = $(CC_FLAGS_FTRACE)

CFLAGS_REMOVE_quarantine.o = $(CC_FLAGS_FTRACE)

CFLAGS_REMOVE_report.o = $(CC_FLAGS_FTRACE)

CFLAGS_REMOVE_tags.o = $(CC_FLAGS_FTRACE)

CFLAGS_REMOVE_tags_report.o = $(CC_FLAGS_FTRACE)



# Function splitter causes unnecessary splits in __asan_load1/__asan_store1

# see: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63533



CFLAGS_common.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)

CFLAGS_generic.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)

CFLAGS_generic_report.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)

CFLAGS_init.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)

CFLAGS_quarantine.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)

CFLAGS_report.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)

CFLAGS_tags.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)

CFLAGS_tags_report.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector)



obj-$(CONFIG_KASAN) := common.o init.o report.o

obj-$(CONFIG_KASAN_GENERIC) += generic.o generic_report.o quarantine.o

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