ilp32: fix compile problem when ARM64_ILP32 and UBSAN are both enabled

hulk inclusion
category: bugfix
bugzilla: NA
CVE: NA

---------------------------

When I enable CONFIG_ARM64_ILP32 and CONFIG_UBSAN, I got the following
compile error. We need to disable UBSAN for 'vdso-ilp32' like commit
ab2a69eee74d ("Fix compile problem when CONFIG_KASAN and CONFIG_UBSAN were
on")

`.data' referenced in section `.text' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o: defined in discarded section `.data' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o
`.data' referenced in section `.text' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o: defined in discarded section `.data' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o
`.data' referenced in section `.text' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o: defined in discarded section `.data' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o
`.data' referenced in section `.text' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o: defined in discarded section `.data' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o
`.data' referenced in section `.text' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o: defined in discarded section `.data' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o
`.data' referenced in section `.text' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o: defined in discarded section `.data' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o
`.data' referenced in section `.text' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o: defined in discarded section `.data' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o
`.data' referenced in section `.text' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o: defined in discarded section `.data' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o
`.data' referenced in section `.text' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o: defined in discarded section `.data' of arch/arm64/kernel/vdso-ilp32/gettimeofday-ilp32.o
Signed-off-by: NWei Li <liwei391@huawei.com>
Signed-off-by: NXiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

arch/arm64/kernel/vdso-ilp32/Makefile

@@ -24,6 +24,9 @@ CFLAGS_gettimeofday-ilp32.o = -O2 -mcmodel=tiny -mabi=ilp32
 
 # Disable gcov profiling for VDSO code
 GCOV_PROFILE := n
+KASAN_SANITIZE := n
+UBSAN_SANITIZE := n
+KCOV_INSTRUMENT := n
 
 # Workaround for bare-metal (ELF) toolchains that neglect to pass -shared
 # down to collect2, resulting in silent corruption of the vDSO image.