From: Roberto Sassu <roberto.sassu@xxxxxxxxxx> The UBSAN instrumentation cannot work in the vDSO since it is executing in userspace, so disable it in the Makefile. Fixes the build failures such as: CALL scripts/checksyscalls.sh VDSO arch/x86/um/vdso/vdso.so.dbg arch/x86/um/vdso/vdso.so.dbg: undefined symbols found Signed-off-by: Roberto Sassu <roberto.sassu@xxxxxxxxxx> --- arch/x86/um/vdso/Makefile | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/um/vdso/Makefile b/arch/x86/um/vdso/Makefile index b86d634730b2..ca79c0de582e 100644 --- a/arch/x86/um/vdso/Makefile +++ b/arch/x86/um/vdso/Makefile @@ -3,8 +3,10 @@ # Building vDSO images for x86. # -# do not instrument on vdso because KASAN is not compatible with user mode +# do not instrument on vdso because KASAN/UBSAN are not compatible with user +# mode KASAN_SANITIZE := n +UBSAN_SANITIZE := n # Prevents link failures: __sanitizer_cov_trace_pc() is not linked in. KCOV_INSTRUMENT := n -- 2.34.1
