Hi Masami, kernel test robot noticed the following build warnings:
[auto build test WARNING on trace/for-next] [also build test WARNING on linus/master v6.17-rc7 next-20250922] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Masami-Hiramatsu-Google/tracing-Allow-tracer-to-add-more-than-32-options/20250922-204945 base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next patch link: https://lore.kernel.org/r/175854518099.353182.11090224112128363620.stgit%40devnote2 patch subject: [PATCH v2 2/2] tracing: Add an option to show symbols in _text+offset for function profiler config: i386-randconfig-014-20250923 (https://download.01.org/0day-ci/archive/20250923/[email protected]/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250923/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): In file included from kernel/trace/trace_output.h:6, from kernel/trace/trace_export.c:15: >> kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_PROF_TEXT_OFFSET' defined >> but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1358:17: note: in expansion of macro 'C' 1358 | C(PROF_TEXT_OFFSET, "prof-text-offset") | ^ kernel/trace/trace.h:1403:17: note: in expansion of macro 'PROFILER_FLAGS' 1403 | PROFILER_FLAGS | ^~~~~~~~~~~~~~ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_STACKTRACE' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1351:17: note: in expansion of macro 'C' 1351 | C(STACKTRACE, "stacktrace") | ^ kernel/trace/trace.h:1401:17: note: in expansion of macro 'STACK_FLAGS' 1401 | STACK_FLAGS \ | ^~~~~~~~~~~ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_FUNC_FORK' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1341:17: note: in expansion of macro 'C' 1341 | C(FUNC_FORK, "function-fork") | ^ kernel/trace/trace.h:1399:17: note: in expansion of macro 'FUNCTION_FLAGS' 1399 | FUNCTION_FLAGS \ | ^~~~~~~~~~~~~~ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_FUNCTION' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1340:17: note: in expansion of macro 'C' 1340 | C(FUNCTION, "function-trace") \ | ^ kernel/trace/trace.h:1399:17: note: in expansion of macro 'FUNCTION_FLAGS' 1399 | FUNCTION_FLAGS \ | ^~~~~~~~~~~~~~ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_HASH_PTR' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1398:17: note: in expansion of macro 'C' 1398 | C(HASH_PTR, "hash-ptr") /* Print hashed pointer */ \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_PAUSE_ON_TRACE' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1397:17: note: in expansion of macro 'C' 1397 | C(PAUSE_ON_TRACE, "pause-on-trace") \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_COPY_MARKER' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1396:17: note: in expansion of macro 'C' 1396 | C(COPY_MARKER, "copy_trace_marker")\ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_TRACE_PRINTK' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1395:17: note: in expansion of macro 'C' 1395 | C(TRACE_PRINTK, "trace_printk_dest") \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_EVENT_FORK' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1394:17: note: in expansion of macro 'C' 1394 | C(EVENT_FORK, "event-fork") \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_MARKERS' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1393:17: note: in expansion of macro 'C' 1393 | C(MARKERS, "markers") \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS -- In file included from kernel/trace/trace_output.h:6, from kernel/trace/trace_events.c:31: >> kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_PROF_TEXT_OFFSET' defined >> but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1358:17: note: in expansion of macro 'C' 1358 | C(PROF_TEXT_OFFSET, "prof-text-offset") | ^ kernel/trace/trace.h:1403:17: note: in expansion of macro 'PROFILER_FLAGS' 1403 | PROFILER_FLAGS | ^~~~~~~~~~~~~~ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_STACKTRACE' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1351:17: note: in expansion of macro 'C' 1351 | C(STACKTRACE, "stacktrace") | ^ kernel/trace/trace.h:1401:17: note: in expansion of macro 'STACK_FLAGS' 1401 | STACK_FLAGS \ | ^~~~~~~~~~~ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_FUNC_FORK' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1341:17: note: in expansion of macro 'C' 1341 | C(FUNC_FORK, "function-fork") | ^ kernel/trace/trace.h:1399:17: note: in expansion of macro 'FUNCTION_FLAGS' 1399 | FUNCTION_FLAGS \ | ^~~~~~~~~~~~~~ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_FUNCTION' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1340:17: note: in expansion of macro 'C' 1340 | C(FUNCTION, "function-trace") \ | ^ kernel/trace/trace.h:1399:17: note: in expansion of macro 'FUNCTION_FLAGS' 1399 | FUNCTION_FLAGS \ | ^~~~~~~~~~~~~~ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_HASH_PTR' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1398:17: note: in expansion of macro 'C' 1398 | C(HASH_PTR, "hash-ptr") /* Print hashed pointer */ \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_PAUSE_ON_TRACE' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1397:17: note: in expansion of macro 'C' 1397 | C(PAUSE_ON_TRACE, "pause-on-trace") \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_COPY_MARKER' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1396:17: note: in expansion of macro 'C' 1396 | C(COPY_MARKER, "copy_trace_marker")\ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_TRACE_PRINTK' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1395:17: note: in expansion of macro 'C' 1395 | C(TRACE_PRINTK, "trace_printk_dest") \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_EVENT_FORK' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1394:17: note: in expansion of macro 'C' 1394 | C(EVENT_FORK, "event-fork") \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_MARKERS' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1393:17: note: in expansion of macro 'C' 1393 | C(MARKERS, "markers") \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS -- kernel/trace/bpf_trace.c: In function '____bpf_trace_printk': kernel/trace/bpf_trace.c:378:9: warning: function '____bpf_trace_printk' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 378 | ret = bstr_printf(data.buf, MAX_BPRINTF_BUF, fmt, data.bin_args); | ^~~ kernel/trace/bpf_trace.c: In function '____bpf_trace_vprintk': kernel/trace/bpf_trace.c:434:9: warning: function '____bpf_trace_vprintk' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 434 | ret = bstr_printf(data.buf, MAX_BPRINTF_BUF, fmt, data.bin_args); | ^~~ kernel/trace/bpf_trace.c: In function '____bpf_seq_printf': kernel/trace/bpf_trace.c:476:9: warning: function '____bpf_seq_printf' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 476 | seq_bprintf(m, fmt, data.bin_args); | ^~~~~~~~~~~ In file included from kernel/trace/trace_probe.h:31, from kernel/trace/bpf_trace.c:35: kernel/trace/trace.h: At top level: >> kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_PROF_TEXT_OFFSET' defined >> but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1358:17: note: in expansion of macro 'C' 1358 | C(PROF_TEXT_OFFSET, "prof-text-offset") | ^ kernel/trace/trace.h:1403:17: note: in expansion of macro 'PROFILER_FLAGS' 1403 | PROFILER_FLAGS | ^~~~~~~~~~~~~~ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_STACKTRACE' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1351:17: note: in expansion of macro 'C' 1351 | C(STACKTRACE, "stacktrace") | ^ kernel/trace/trace.h:1401:17: note: in expansion of macro 'STACK_FLAGS' 1401 | STACK_FLAGS \ | ^~~~~~~~~~~ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_FUNC_FORK' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1341:17: note: in expansion of macro 'C' 1341 | C(FUNC_FORK, "function-fork") | ^ kernel/trace/trace.h:1399:17: note: in expansion of macro 'FUNCTION_FLAGS' 1399 | FUNCTION_FLAGS \ | ^~~~~~~~~~~~~~ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_FUNCTION' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1340:17: note: in expansion of macro 'C' 1340 | C(FUNCTION, "function-trace") \ | ^ kernel/trace/trace.h:1399:17: note: in expansion of macro 'FUNCTION_FLAGS' 1399 | FUNCTION_FLAGS \ | ^~~~~~~~~~~~~~ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_HASH_PTR' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1398:17: note: in expansion of macro 'C' 1398 | C(HASH_PTR, "hash-ptr") /* Print hashed pointer */ \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_PAUSE_ON_TRACE' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1397:17: note: in expansion of macro 'C' 1397 | C(PAUSE_ON_TRACE, "pause-on-trace") \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_COPY_MARKER' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1396:17: note: in expansion of macro 'C' 1396 | C(COPY_MARKER, "copy_trace_marker")\ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_TRACE_PRINTK' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1395:17: note: in expansion of macro 'C' 1395 | C(TRACE_PRINTK, "trace_printk_dest") \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_EVENT_FORK' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1394:17: note: in expansion of macro 'C' 1394 | C(EVENT_FORK, "event-fork") \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS | ^~~~~~~~~~~ kernel/trace/trace.h:1423:34: warning: 'TRACE_ITER_MARKERS' defined but not used [-Wunused-const-variable=] 1423 | #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); | ^~~~~~~~~~~ kernel/trace/trace.h:1393:17: note: in expansion of macro 'C' 1393 | C(MARKERS, "markers") \ | ^ kernel/trace/trace.h:1425:1: note: in expansion of macro 'TRACE_FLAGS' 1425 | TRACE_FLAGS .. vim +/TRACE_ITER_PROF_TEXT_OFFSET +1423 kernel/trace/trace.h a3418a364ec3c8 Steven Rostedt (Red Hat 2015-09-29 1417) a3418a364ec3c8 Steven Rostedt (Red Hat 2015-09-29 1418) /* a3418a364ec3c8 Steven Rostedt (Red Hat 2015-09-29 1419) * By redefining C, we can make TRACE_FLAGS a list of masks that a3418a364ec3c8 Steven Rostedt (Red Hat 2015-09-29 1420) * use the bits as defined above. a3418a364ec3c8 Steven Rostedt (Red Hat 2015-09-29 1421) */ a3418a364ec3c8 Steven Rostedt (Red Hat 2015-09-29 1422) #undef C 7e017e0772184c Masami Hiramatsu (Google 2025-09-22 @1423) #define C(a, b) static const u64 TRACE_ITER_##a = (1ULL << TRACE_ITER_##a##_BIT); a3418a364ec3c8 Steven Rostedt (Red Hat 2015-09-29 1424) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
