[PATCH 5/5] gcc-plugins/stackleak: Don't instrument vgettimeofday.c in arm64 VDSO

Alexander Popov
2020-06-04T13:51:15Z

Don't try instrumenting functions in arch/arm64/kernel/vdso/vgettimeofday.c.
Otherwise that can cause issues if the cleanup pass of stackleak gcc plugin
is disabled.

Signed-off-by: Alexander Popov <alex.popov@linux.com>
---
arch/arm64/kernel/vdso/Makefile | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile
index 3862cad2410c..9b84cafbd2da 100644
--- a/arch/arm64/kernel/vdso/Makefile
+++ b/arch/arm64/kernel/vdso/Makefile
@@ -32,7 +32,8 @@ UBSAN_SANITIZE := n
OBJECT_FILES_NON_STANDARD := y
KCOV_INSTRUMENT := n

-CFLAGS_vgettimeofday.o = -O2 -mcmodel=tiny -fasynchronous-unwind-tables
+CFLAGS_vgettimeofday.o = -O2 -mcmodel=tiny -fasynchronous-unwind-tables \
+ $(DISABLE_STACKLEAK_PLUGIN)

ifneq ($(c-gettimeofday-y),)
CFLAGS_vgettimeofday.o += -include $(c-gettimeofday-y)
--
2.25.2