[PATCH] x86/stackprotector: fix build failure with CONFIG_STACKPROTECTOR=n

[Oleg Nesterov]

Add the necessary '#ifdef CONFIG_STACKPROTECTOR' into
arch/x86/kernel/vmlinux.lds.S

Fixes: 577c134d311b ("x86/stackprotector: Work around strict Clang TLS symbol requirements")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
---
 arch/x86/kernel/vmlinux.lds.S | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index fab3ac9a4574..2ff48645bab9 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -472,8 +472,10 @@ SECTIONS
 . = ASSERT((_end - LOAD_OFFSET <= KERNEL_IMAGE_SIZE),
 	   "kernel image bigger than KERNEL_IMAGE_SIZE");
 
+#ifdef CONFIG_STACKPROTECTOR
 /* needed for Clang - see arch/x86/entry/entry.S */
 PROVIDE(__ref_stack_chk_guard = __stack_chk_guard);
+#endif
 
 #ifdef CONFIG_X86_64
 /*
-- 
2.25.1.362.g51ebf55