tree: https://github.com/ammarfaizi2/linux-block crng/random/jd/fast-mix-lfsr head: 2cdf0f5c31f7568d709533d93b746ae8932dfa99 commit: fc2551cdc07cfb4ea1247ecaec28e78f6d942c1f [17/38] random: make more consistent use of integer types config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220213/202202131057.QVvn6nBp-lk...) compiler: powerpc-linux-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/ammarfaizi2/linux-block/commit/fc2551cdc07cfb4ea1247ec... git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block crng/random/jd/fast-mix-lfsr git checkout fc2551cdc07cfb4ea1247ecaec28e78f6d942c1f # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/char/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Note: the ammarfaizi2-block/crng/random/jd/fast-mix-lfsr HEAD 2cdf0f5c31f7568d709533d93b746ae8932dfa99 builds fine. It only hurts bisectability. All errors (new ones prefixed by >>): In file included from include/trace/define_trace.h:102, from include/trace/events/random.h:212, from drivers/char/random.c:241: include/trace/events/random.h: In function 'ftrace_test_probe_mix_pool_bytes_nolock': 870 | check_trace_callback_type_##call(trace_event_raw_event_##template); \ | ^~~~~~~~~~~~~~~~~~~~~~ | | | void (*)(void *, size_t, long unsigned int) {aka void (*)(void *, unsigned int, long unsigned int)} include/trace/events/random.h:55:1: note: in expansion of macro 'DEFINE_EVENT' 55 | DEFINE_EVENT(random__mix_pool_bytes, mix_pool_bytes_nolock, | ^~~~~~~~~~~~ In file included from include/trace/syscall.h:5, from include/linux/syscalls.h:88, from drivers/char/random.c:228: include/linux/tracepoint.h:279:49: note: expected 'void (*)(void *, int, long unsigned int)' but argument is of type 'void (*)(void *, size_t, long unsigned int)' {aka 'void (*)(void *, unsigned int, long unsigned int)'} 279 | check_trace_callback_type_##name(void (*cb)(data_proto)) \ | ~~~~~~~^~~~~~~~~~~~~~~ include/linux/tracepoint.h:419:9: note: in expansion of macro '__DECLARE_TRACE' 419 | __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ | ^~~~~~~~~~~~~~~ include/linux/tracepoint.h:542:9: note: in expansion of macro 'DECLARE_TRACE' 542 | DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) | ^~~~~~~~~~~~~ include/trace/events/random.h:55:1: note: in expansion of macro 'DEFINE_EVENT' 55 | DEFINE_EVENT(random__mix_pool_bytes, mix_pool_bytes_nolock, | ^~~~~~~~~~~~ In file included from include/trace/define_trace.h:103, from include/trace/events/random.h:212, from drivers/char/random.c:241: include/trace/events/random.h: In function 'perf_test_probe_mix_pool_bytes_nolock': 99 | check_trace_callback_type_##call(perf_trace_##template); \ | ^~~~~~~~~~~ | | | void (*)(void *, size_t, long unsigned int) {aka void (*)(void *, unsigned int, long unsigned int)} include/trace/events/random.h:55:1: note: in expansion of macro 'DEFINE_EVENT' 55 | DEFINE_EVENT(random__mix_pool_bytes, mix_pool_bytes_nolock, | ^~~~~~~~~~~~ In file included from include/trace/syscall.h:5, from include/linux/syscalls.h:88, from drivers/char/random.c:228: include/linux/tracepoint.h:279:49: note: expected 'void (*)(void *, int, long unsigned int)' but argument is of type 'void (*)(void *, size_t, long unsigned int)' {aka 'void (*)(void *, unsigned int, long unsigned int)'} 279 | check_trace_callback_type_##name(void (*cb)(data_proto)) \ | ~~~~~~~^~~~~~~~~~~~~~~ include/linux/tracepoint.h:419:9: note: in expansion of macro '__DECLARE_TRACE' 419 | __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ | ^~~~~~~~~~~~~~~ include/linux/tracepoint.h:542:9: note: in expansion of macro 'DECLARE_TRACE' 542 | DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) | ^~~~~~~~~~~~~ include/trace/events/random.h:55:1: note: in expansion of macro 'DEFINE_EVENT' 55 | DEFINE_EVENT(random__mix_pool_bytes, mix_pool_bytes_nolock, | ^~~~~~~~~~~~ In file included from include/trace/define_trace.h:104, from include/trace/events/random.h:212, from drivers/char/random.c:241: include/trace/events/random.h: In function 'bpf_test_probe_mix_pool_bytes_nolock': 94 | check_trace_callback_type_##call(__bpf_trace_##template); \ | ^~~~~~~~~~~~ | | | void (*)(void *, size_t, long unsigned int) {aka void (*)(void *, unsigned int, long unsigned int)} include/trace/bpf_probe.h:130:9: note: in expansion of macro '__DEFINE_EVENT' 130 | __DEFINE_EVENT(template, call, PARAMS(proto), PARAMS(args), 0) | ^~~~~~~~~~~~~~ include/trace/events/random.h:55:1: note: in expansion of macro 'DEFINE_EVENT' 55 | DEFINE_EVENT(random__mix_pool_bytes, mix_pool_bytes_nolock, | ^~~~~~~~~~~~ In file included from include/trace/syscall.h:5, from include/linux/syscalls.h:88, from drivers/char/random.c:228: include/linux/tracepoint.h:279:49: note: expected 'void (*)(void *, int, long unsigned int)' but argument is of type 'void (*)(void *, size_t, long unsigned int)' {aka 'void (*)(void *, unsigned int, long unsigned int)'} 279 | check_trace_callback_type_##name(void (*cb)(data_proto)) \ | ~~~~~~~^~~~~~~~~~~~~~~ include/linux/tracepoint.h:419:9: note: in expansion of macro '__DECLARE_TRACE' 419 | __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ | ^~~~~~~~~~~~~~~ include/linux/tracepoint.h:542:9: note: in expansion of macro 'DECLARE_TRACE' 542 | DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) | ^~~~~~~~~~~~~ include/trace/events/random.h:55:1: note: in expansion of macro 'DEFINE_EVENT' 55 | DEFINE_EVENT(random__mix_pool_bytes, mix_pool_bytes_nolock, | ^~~~~~~~~~~~ drivers/char/random.c: At top level: drivers/char/random.c:1739:6: warning: no previous prototype for 'add_hwgenerator_randomness' [-Wmissing-prototypes] 1739 | void add_hwgenerator_randomness(const void *buffer, size_t count, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/check_trace_callback_type_mix_pool_bytes_nolock +870 include/trace/trace_events.h 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 830) 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 831) #undef DECLARE_EVENT_CLASS 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 832) #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 833) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 834) static notrace void \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 835) trace_event_raw_event_##call(void *__data, proto) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 836) { \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 837) struct trace_event_file *trace_file = __data; \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 838) struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 839) struct trace_event_buffer fbuffer; \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 840) struct trace_event_raw_##call *entry; \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 841) int __data_size; \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 842) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 843) if (trace_trigger_soft_disabled(trace_file)) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 844) return; \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 845) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 846) __data_size = trace_event_get_offsets_##call(&__data_offsets, args); \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 847) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 848) entry = trace_event_buffer_reserve(&fbuffer, trace_file, \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 849) sizeof(*entry) + __data_size); \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 850) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 851) if (!entry) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 852) return; \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 853) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 854) tstruct \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 855) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 856) { assign; } \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 857) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 858) trace_event_buffer_commit(&fbuffer); \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 859) } 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 860) /* 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 861) * The ftrace_test_probe is compiled out, it is only here as a build time check 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 862) * to make sure that if the tracepoint handling changes, the ftrace probe will 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 863) * fail to compile unless it too is updated. 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 864) */ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 865) 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 866) #undef DEFINE_EVENT 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 867) #define DEFINE_EVENT(template, call, proto, args) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 868) static inline void ftrace_test_probe_##call(void) \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 869) { \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 @870) check_trace_callback_type_##call(trace_event_raw_event_##template); \ 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 871) } 46ac51822a6a0b Steven Rostedt (Red Hat 2015-09-23 872) :::::: The code at line 870 was first introduced by commit :::::: 46ac51822a6a0b83ee3e408ee9edcb292fb8ced0 tracing: Move non perf code out of perf.h :::::: TO: Steven Rostedt (Red Hat) <rostedt(a)goodmis.org&gt; :::::: CC: Steven Rostedt <rostedt(a)goodmis.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org