[kbuild-all] Re: [ebiederm-user-namespace:signal-for-v5.17 4/12] arch/x86/kernel/dumpstack.o: warning: objtool: oops_end() falls through to next function show_opcodes()

kernel test robot <lkp(a)intel.com&gt; writes: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git signal-for-v5.17 > head: 6b1248798eb6f6d5285db214299996ecc5dc1e6b > commit: 0e25498f8cd43c1b5aa327f373dd094e9a006da7 [4/12] exit: Add and use make_task_dead. > config: x86_64-randconfig-a011-20211213 (https://download.01.org/0day-ci/archive/20211214/202112140949.Uq5sFKR1-lk...) > compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 > reproduce (this is a W=1 build): > # https://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.g... > git remote add ebiederm-user-namespace https://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git > git fetch --no-tags ebiederm-user-namespace signal-for-v5.17 > git checkout 0e25498f8cd43c1b5aa327f373dd094e9a006da7 > # save the config file to linux build tree > mkdir build_dir > make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/ kernel/ lib/kunit/ > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp(a)intel.com&gt; > > All warnings (new ones prefixed by >>): > >>> lib/kunit/kunit-example-test.o: warning: objtool: .text.unlikely: unexpected end of section > -- >>> arch/x86/kernel/dumpstack.o: warning: objtool: oops_end() falls through to next function show_opcodes() I am confused. This change patches objtool to rename rewind_stack_and_do_exit to rewind_stack_and_make_dead in the list global_noreturns in tools/objtool/check.c There is no other change to oops_end other than that renaming. Did the robot somehow mange to run an old version of objtool while building and this get this error? I tried and I am not currently able to reproduce this error. Do you have any additional pointers on how I might reproduce this?