vmlinux.o: warning: objtool: __ubsan_handle_out_of_bounds+0x3f: RET before UNTRAIN

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   619f0b6fad524f08d493a98d55bac9ab8895e3a6
commit: a2796dff62d6c6bfc5fbebdf2bee0d5ac0438906 x86/xen: don't do PV iret hypercall through hypercall page
date:   5 weeks ago
config: x86_64-buildonly-randconfig-005-20250116 (https://download.01.org/0day-ci/archive/20250116/202501161128.VLM1VkvF-lkp@xxxxxxxxx/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250116/202501161128.VLM1VkvF-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202501161128.VLM1VkvF-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   vmlinux.o: warning: objtool: __static_call_update_early+0x33: call to serialize() leaves .noinstr.text section
>> vmlinux.o: warning: objtool: __ubsan_handle_out_of_bounds+0x3f: RET before UNTRAIN

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki