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Hello, kernel test robot noticed "kernel-selftests-bpf.sched_ext.make.fail" on: commit: c3c5a73eb6ed699262df440942d88f23cc9f10e9 ("[PATCH v1] sched_ext: Add comprehensive selftests") url: https://github.com/intel-lab-lkp/linux/commits/dongwanqiang/sched_ext-Add-comprehensive-selftests/20260113-164727 base: https://git.kernel.org/cgit/linux/kernel/git/shuah/linux-kselftest.git next patch link: https://lore.kernel.org/all/20260113083231.1650001-1-dongwanqiang2021@gmail.com/ patch subject: [PATCH v1] sched_ext: Add comprehensive selftests in testcase: kernel-selftests-bpf version: with following parameters: group: sched_ext config: x86_64-rhel-9.4-bpf compiler: gcc-14 test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz (Kaby Lake) with 32G memory (please refer to attached dmesg/kmsg for entire log/backtrace) 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 | Closes: https://lore.kernel.org/oe-lkp/202601161607.7b263d0f-lkp@intel.com CLNG-BPF ddsp_bogus_dsq_fail.bpf.o /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c3c5a73eb6ed699262df440942d88f23cc9f10e9/tools/testing/selftests/sched_ext/build/include/vmlinux.h:89012:2: warning: declaration does not declare anything [-Wmissing-declarations] 89012 | struct freelist_tid; | ^~~~~~~~~~~~~~~~~~~ concurrent_pressure.bpf.c:104:24: error: use of undeclared identifier 'nr_cpu_ids' 104 | if (cpu < 0 || cpu >= nr_cpu_ids) { | ^ concurrent_pressure.bpf.c:164:3: error: call to undeclared function 'scx_bpf_print'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 164 | scx_bpf_print("Pressure test completed: %llu total operations\n", | ^ concurrent_pressure.bpf.c:164:3: note: did you mean 'scx_bpf_events'? /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c3c5a73eb6ed699262df440942d88f23cc9f10e9/tools/sched_ext/include/scx/common.bpf.h:103:6: note: 'scx_bpf_events' declared here 103 | void scx_bpf_events(struct scx_event_stats *events, size_t events__sz) __ksym __weak; | ^ /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c3c5a73eb6ed699262df440942d88f23cc9f10e9/tools/testing/selftests/sched_ext/build/include/vmlinux.h:108246:2: warning: declaration does not declare anything [-Wmissing-declarations] 108246 | union pipe_index; | ^~~~~~~~~~~~~~~~ 4 warnings and 2 errors generated. /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c3c5a73eb6ed699262df440942d88f23cc9f10e9/tools/testing/selftests/sched_ext/build/include/vmlinux.h:120240:4: warning: declaration does not declare anything [-Wmissing-declarations] 120240 | struct freelist_counters; | ^~~~~~~~~~~~~~~~~~~~~~~~ make: *** [Makefile:136: /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c3c5a73eb6ed699262df440942d88f23cc9f10e9/tools/testing/selftests/sched_ext/build/obj/sched_ext/concurrent_pressure.bpf.o] Error 1 make: *** Waiting for unfinished jobs.... In file included from ddsp_bogus_dsq_fail.bpf.c:7: In file included from /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c3c5a73eb6ed699262df440942d88f23cc9f10e9/tools/sched_ext/include/scx/common.bpf.h:21: /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c3c5a73eb6ed699262df440942d88f23cc9f10e9/tools/testing/selftests/sched_ext/build/include/vmlinux.h:52185:3: warning: declaration does not declare anything [-Wmissing-declarations] 52185 | struct ns_tree; | ^~~~~~~~~~~~~~ 4 warnings generated. /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c3c5a73eb6ed699262df440942d88f23cc9f10e9/tools/testing/selftests/sched_ext/build/include/vmlinux.h:89012:2: warning: declaration does not declare anything [-Wmissing-declarations] 89012 | struct freelist_tid; | ^~~~~~~~~~~~~~~~~~~ /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c3c5a73eb6ed699262df440942d88f23cc9f10e9/tools/testing/selftests/sched_ext/build/include/vmlinux.h:108246:2: warning: declaration does not declare anything [-Wmissing-declarations] 108246 | union pipe_index; | ^~~~~~~~~~~~~~~~ /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c3c5a73eb6ed699262df440942d88f23cc9f10e9/tools/testing/selftests/sched_ext/build/include/vmlinux.h:120240:4: warning: declaration does not declare anything [-Wmissing-declarations] 120240 | struct freelist_counters; | ^~~~~~~~~~~~~~~~~~~~~~~~ 4 warnings generated. make: Leaving directory '/usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c3c5a73eb6ed699262df440942d88f23cc9f10e9/tools/testing/selftests/sched_ext' The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260116/202601161607.7b263d0f-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki