From: Marco Elver elver@google.com
[ Upstream commit 5eb39cde1e2487ba5ec1802dc5e58a77e700d99e ]
Nathan reported that when building with GNU as and a version of clang that defaults to DWARF5, the assembler will complain with:
Error: non-constant .uleb128 is not supported
This is because `-g` defaults to the compiler debug info default. If the assembler does not support some of the directives used, the above errors occur. To fix, remove the explicit passing of `-g`.
All the test wants is that stack traces print valid function names, and debug info is not required for that. (I currently cannot recall why I added the explicit `-g`.)
Link: https://lkml.kernel.org/r/20230316224705.709984-2-elver@google.com Fixes: 1fe84fd4a402 ("kcsan: Add test suite") Signed-off-by: Marco Elver elver@google.com Reported-by: Nathan Chancellor nathan@kernel.org Cc: Alexander Potapenko glider@google.com Cc: Dmitry Vyukov dvyukov@google.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/kcsan/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/kcsan/Makefile b/kernel/kcsan/Makefile index c95957741d366..a9b0ee63b6978 100644 --- a/kernel/kcsan/Makefile +++ b/kernel/kcsan/Makefile @@ -13,6 +13,6 @@ CFLAGS_core.o := $(call cc-option,-fno-conserve-stack) \ obj-y := core.o debugfs.o report.o obj-$(CONFIG_KCSAN_SELFTEST) += selftest.o
-CFLAGS_kcsan-test.o := $(CFLAGS_KCSAN) -g -fno-omit-frame-pointer +CFLAGS_kcsan-test.o := $(CFLAGS_KCSAN) -fno-omit-frame-pointer CFLAGS_kcsan_test.o += $(DISABLE_STRUCTLEAK_PLUGIN) obj-$(CONFIG_KCSAN_TEST) += kcsan-test.o