Re: [linux-next:master 10409/11394] ERROR: modpost: "__fentry__" [tools/testing/selftests/livepatch/test_modules/test_klp_atomic_replace.ko] undefined!

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On Sat, 2 Mar 2024 14:14:12 +0800 kernel test robot <lkp@xxxxxxxxx> wrote:

> Hi Marcos,
> 
> First bad commit (maybe != root cause):
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   1870cdc0e8dee32e3c221704a2977898ba4c10e8
> commit: 539cd3f4da3fdbe7dc353634e004e4b0e725c35a [10409/11394] selftests: lib.mk: Do not process TEST_GEN_MODS_DIR
> compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240302/202403021440.Rs4qG6fP-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/202403021440.Rs4qG6fP-lkp@xxxxxxxxx/
> 
> All errors (new ones prefixed by >>, old ones prefixed by <<):
> 
> WARNING: Module.symvers is missing.
> Modules may not have dependencies or modversions.

This seems suspicious. Can you be sure that kernel-devel was installed properly
in this machine? We have landed a patch to skip building the tests if
kernel-devel is not installed. We check if /lib/modules/<kernel-version/build
is present to start building, but I would expect Module.symvers to be present.

Please let me know if we need to adapt our tests further to avoid such problems.

> You may get many unresolved symbol errors.
> You can set KBUILD_MODPOST_WARN=1 to turn errors into warning
> if you want to proceed at your own risk.
> >> ERROR: modpost: "__fentry__" [tools/testing/selftests/livepatch/test_modules/test_klp_atomic_replace.ko] undefined!
> >> ERROR: modpost: "klp_enable_patch" [tools/testing/selftests/livepatch/test_modules/test_klp_atomic_replace.ko] undefined!
> >> ERROR: modpost: "seq_printf" [tools/testing/selftests/livepatch/test_modules/test_klp_atomic_replace.ko] undefined!
> >> ERROR: modpost: "param_ops_int" [tools/testing/selftests/livepatch/test_modules/test_klp_atomic_replace.ko] undefined!
> >> ERROR: modpost: "module_layout" [tools/testing/selftests/livepatch/test_modules/test_klp_atomic_replace.ko] undefined!
> >> ERROR: modpost: "__fentry__" [tools/testing/selftests/livepatch/test_modules/test_klp_callbacks_busy.ko] undefined!
> >> ERROR: modpost: "flush_work" [tools/testing/selftests/livepatch/test_modules/test_klp_callbacks_busy.ko] undefined!
> >> ERROR: modpost: "_printk" [tools/testing/selftests/livepatch/test_modules/test_klp_callbacks_busy.ko] undefined!
> >> ERROR: modpost: "complete" [tools/testing/selftests/livepatch/test_modules/test_klp_callbacks_busy.ko] undefined!
> >> ERROR: modpost: "msleep" [tools/testing/selftests/livepatch/test_modules/test_klp_callbacks_busy.ko] undefined!
> WARNING: modpost: suppressed 80 unresolved symbol warnings because there were too many)
> 
> -- 
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki




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