[PATCH AUTOSEL 5.10 22/31] sh: Fix build with CONFIG_UBSAN=y

[Sasha Levin]

From: Kees Cook <keescook@xxxxxxxxxxxx>

[ Upstream commit e36b70fb8c707a0688960184380bc151390d671b ]

The early boot stub for sh had UBSan instrumentation present where it is
not supported. Disable it for this part of the build.

  sh4-linux-ld: arch/sh/boot/compressed/misc.o: in function `zlib_inflate_table':
  misc.c:(.text+0x670): undefined reference to `__ubsan_handle_shift_out_of_bounds'

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202401310416.s8HLiLnC-lkp@xxxxxxxxx/
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Cc: Nicolas Schier <n.schier@xxxxxx>
Cc:  <linux-sh@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240130232717.work.088-kees@xxxxxxxxxx
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 arch/sh/boot/compressed/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/sh/boot/compressed/Makefile b/arch/sh/boot/compressed/Makefile
index 589d2d8a573db..edc9dc36115dc 100644
--- a/arch/sh/boot/compressed/Makefile
+++ b/arch/sh/boot/compressed/Makefile
@@ -13,6 +13,7 @@ targets		:= vmlinux vmlinux.bin vmlinux.bin.gz \
 OBJECTS = $(obj)/head_32.o $(obj)/misc.o $(obj)/cache.o
 
 GCOV_PROFILE := n
+UBSAN_SANITIZE := n
 
 #
 # IMAGE_OFFSET is the load offset of the compression loader
-- 
2.43.0