On Wed, 17 Jun 2026 14:26:36 +0100 Vincent Donnefort <[email protected]> wrote:
> On Tue, Jun 16, 2026 at 06:42:03PM +0200, Arnd Bergmann wrote: > > From: Arnd Bergmann <[email protected]> > > > > In randconfig build testing using clang-22, I came across two > > sets of extra symbols in the ring buffer code that may get > > inserted by the compiler: > > > > Unexpected symbols in kernel/trace/simple_ring_buffer.o: > > U memset > > > > Unexpected symbols in kernel/trace/simple_ring_buffer.o: > > U llvm_gcda_emit_arcs > > U llvm_gcda_emit_function > > U llvm_gcda_end_file > > U llvm_gcda_start_file > > U llvm_gcda_summary_info > > U llvm_gcov_init > > > > Add all of these to the allowlist. > > > > Signed-off-by: Arnd Bergmann <[email protected]> > > --- > > kernel/trace/Makefile | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile > > index f934ff586bd4..aa8564fb8ff4 100644 > > --- a/kernel/trace/Makefile > > +++ b/kernel/trace/Makefile > > @@ -146,6 +146,7 @@ KASAN_SANITIZE_undefsyms_base.o := y > > Would "GCOV_PROFILE_undefsyms_base.o := y" work? Arnd? -- Steve > > > > > UNDEFINED_ALLOWLIST = __asan __gcov __kasan __kcsan __hwasan __sancov > > __sanitizer __tsan __ubsan __msan \ > > __aeabi_unwind_cpp __s390_indirect_jump > > __x86_indirect_thunk simple_ring_buffer \ > > + memset llvm_gcda llvm_gcov \ > > $(shell $(NM) -u $(obj)/undefsyms_base.o 2>/dev/null | > > awk '{print $$2}') > > > > quiet_cmd_check_undefined = NM $< > > -- > > 2.39.5 > >
