[PATCH] powerpc/32: Add .data..LASAN* sections explicitly

[Mathieu Malaterre]

When both `CONFIG_LD_DEAD_CODE_DATA_ELIMINATION=y` and `CONFIG_KASAN=y`
are set, link step typically produce numberous warnings about orphan
section:

  powerpc-linux-gnu-ld: warning: orphan section `.data..LASAN0' from `net/core/filter.o' being placed in section `.data..LASAN0'
  powerpc-linux-gnu-ld: warning: orphan section `.data..LASANLOC1' from `net/core/filter.o' being placed in section `.data..LASANLOC1'

This commit remove those warnings produced at W=1.

Reported-by: Christophe Leroy <christophe.leroy@xxxxxx>
Signed-off-by: Mathieu Malaterre <malat@xxxxxxxxxx>
---
 arch/powerpc/kernel/vmlinux.lds.S | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 060a1acd7c6d..c74f4cb6ec3a 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -307,6 +307,9 @@ SECTIONS
 #ifdef CONFIG_PPC32
 	.data : AT(ADDR(.data) - LOAD_OFFSET) {
 		DATA_DATA
+#ifdef CONFIG_KASAN
+		*(.data..LASAN*)
+#endif
 #ifdef CONFIG_UBSAN
 		*(.data..Lubsan_data*)
 		*(.data..Lubsan_type*)
-- 
2.20.1