[PATCH AUTOSEL 6.1 35/52] sh: Fix build with CONFIG_UBSAN=y

Sasha Levin
2024-03-29T12:47:11Z

From: Kees Cook <keescook@chromium.org>

[ 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@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401310416.s8HLiLnC-lkp@intel.com/
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nicolas Schier <n.schier@avm.de>
Cc: <linux-sh@vger.kernel.org>
Link: https://lore.kernel.org/r/20240130232717.work.088-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 591125c42d49d..ec3e78c5bff1e 100644
--- a/arch/sh/boot/compressed/Makefile
+++ b/arch/sh/boot/compressed/Makefile
@@ -19,6 +19,7 @@ targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
vmlinux.bin.lzma vmlinux.bin.xz vmlinux.bin.lzo $(OBJECTS)

GCOV_PROFILE := n
+UBSAN_SANITIZE := n

#
# IMAGE_OFFSET is the load offset of the compression loader
--
2.43.0