[RFC PATCH v2 07/14] kcov: exclude kcov_dataflow.o from sanitizer instrumentation

[Yunseong Kim]

Exclude kcov_dataflow.o from KCOV, KASAN, KCSAN, UBSAN, and KMSAN
instrumentation, matching the exclusions already applied to kcov.o.
Without this, sanitizers instrumenting the dataflow callbacks would
cause infinite recursion.

Signed-off-by: Yunseong Kim <yunseong.kim@xxxxxxxx>
---
 kernel/Makefile | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/kernel/Makefile b/kernel/Makefile
index b70e524c4074..307b7fd1e1f9 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -44,6 +44,12 @@ KCSAN_SANITIZE_kcov.o := n
 UBSAN_SANITIZE_kcov.o := n
 KMSAN_SANITIZE_kcov.o := n
 
+KCOV_INSTRUMENT_kcov_dataflow.o := n
+KASAN_SANITIZE_kcov_dataflow.o := n
+KCSAN_SANITIZE_kcov_dataflow.o := n
+UBSAN_SANITIZE_kcov_dataflow.o := n
+KMSAN_SANITIZE_kcov_dataflow.o := n
+
 CONTEXT_ANALYSIS_kcov.o := y
 CFLAGS_kcov.o := $(call cc-option, -fno-conserve-stack) -fno-stack-protector
 

-- 
2.43.0