[LTP] [PATCH 2/2] kvm: Fix undefined reference to __stack_chk_fail()

Petr Vorel
2022-06-06T18:44:13Z

Some x86_64 buildroot toolchains (bootlin-x86-64-glibc,
bootlin-x86-64-musl) try to link to __stack_chk_fail().
-nostdlib is not enough, it requires also -fstack-protector.

x86_64-buildroot-linux-gnu/bin/ld: /tmp/ccgBXEoR.o: in function `handle_page_fault':
kvm_pagefault01.c:(.text+0x5d): undefined reference to `__stack_chk_fail'
collect2: error: ld returned 1 exit status

Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
---
testcases/kernel/kvm/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/testcases/kernel/kvm/Makefile b/testcases/kernel/kvm/Makefile
index 8d5193d8e..bce1a4eb5 100644
--- a/testcases/kernel/kvm/Makefile
+++ b/testcases/kernel/kvm/Makefile
@@ -9,7 +9,7 @@ ASFLAGS =
CPPFLAGS += -I$(abs_srcdir)/include
GUEST_CPPFLAGS = $(CPPFLAGS) -DCOMPILE_PAYLOAD
GUEST_CFLAGS = -ffreestanding -O2 -Wall -fno-asynchronous-unwind-tables -mno-mmx -mno-sse
-GUEST_LDFLAGS = -nostdlib -Wl,--build-id=none
+GUEST_LDFLAGS = -nostdlib -Wl,--build-id=none -fstack-protector
GUEST_LDLIBS =

FILTER_OUT_MAKE_TARGETS := lib_guest lib_host lib_x86
--
2.36.1