make[5]: *** No rule to make target 'scripts/module.lds', needed by 'tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.ko'.

From: kernel test robot <lkp@intel.com>
To: Sergei Trofimovich <slyich@gmail.com>
Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
	Josh Poimboeuf <jpoimboe@redhat.com>
Subject: make[5]: *** No rule to make target 'scripts/module.lds', needed by 'tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.ko'.
Date: Thu, 8 Jun 2023 05:24:07 +0800	[thread overview]
Message-ID: <202306080543.EJWQZYkE-lkp@intel.com> (raw)

Hi Sergei,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a27648c742104a833a01c54becc24429898d85bf
commit: 82880283d7fcd0a1d20964a56d6d1a5cc0df0713 objtool: Fix truncated string warning
date:   1 year, 4 months ago
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce:
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=82880283d7fcd0a1d20964a56d6d1a5cc0df0713
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 82880283d7fcd0a1d20964a56d6d1a5cc0df0713
        make W=1 O=/tmp/kselftest headers
        make W=1 O=/tmp/kselftest -C tools/testing/selftests
        make W=1 O=/tmp/kselftest -C tools/testing/selftests/bpf

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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306080543.EJWQZYkE-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

>> tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:19:1: warning: no previous prototype for 'bpf_testmod_test_mod_kfunc' [-Wmissing-prototypes]
      19 | bpf_testmod_test_mod_kfunc(int i)
         | ^~~~~~~~~~~~~~~~~~~~~~~~~~
>> tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:24:14: warning: no previous prototype for 'bpf_testmod_loop_test' [-Wmissing-prototypes]
      24 | noinline int bpf_testmod_loop_test(int n)
         |              ^~~~~~~~~~~~~~~~~~~~~
>> tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:36:30: warning: no previous prototype for 'bpf_testmod_return_ptr' [-Wmissing-prototypes]
      36 | __weak noinline struct file *bpf_testmod_return_ptr(int arg)
         |                              ^~~~~~~~~~~~~~~~~~~~~~
   tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:53:1: warning: no previous prototype for 'bpf_testmod_test_read' [-Wmissing-prototypes]
      53 | bpf_testmod_test_read(struct file *file, struct kobject *kobj,
         | ^~~~~~~~~~~~~~~~~~~~~
   tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c:89:1: warning: no previous prototype for 'bpf_testmod_test_write' [-Wmissing-prototypes]
      89 | bpf_testmod_test_write(struct file *file, struct kobject *kobj,
         | ^~~~~~~~~~~~~~~~~~~~~~
--
>> make[5]: *** No rule to make target 'scripts/module.lds', needed by 'tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.ko'.
   make[5]: Target '__modfinal' not remade because of errors.

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