Hi Steven, kernel test robot noticed the following build errors:
[auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on linus/master v6.18-rc1 next-20251015] [cannot apply to trace/for-next acme/perf/core] [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/Steven-Rostedt/tracing-Make-trace_user_fault_read-exposed-to-rest-of-tracing/20251016-014059 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20251015173550.225723717%40kernel.org patch subject: [PATCH v3 13/13] tracing: Have persistent ring buffer print syscalls normally config: s390-randconfig-001-20251016 (https://download.01.org/0day-ci/archive/20251016/[email protected]/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251016/[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 errors (new ones prefixed by >>): >> kernel/trace/trace.c:4258:26: error: use of undeclared identifier >> 'enter_syscall_print_funcs' 4258 | (event->funcs != &enter_syscall_print_funcs) && | ^ >> kernel/trace/trace.c:4259:26: error: use of undeclared identifier >> 'exit_syscall_print_funcs' 4259 | (event->funcs != &exit_syscall_print_funcs)) | ^ kernel/trace/trace.c:11443:32: error: use of undeclared identifier 'CONFIG_TRACE_SYSCALL_BUF_SIZE_DEFAULT' 11443 | global_trace.syscall_buf_sz = CONFIG_TRACE_SYSCALL_BUF_SIZE_DEFAULT; | ^ 3 errors generated. vim +/enter_syscall_print_funcs +4258 kernel/trace/trace.c 4222 4223 static enum print_line_t print_trace_fmt(struct trace_iterator *iter) 4224 { 4225 struct trace_array *tr = iter->tr; 4226 struct trace_seq *s = &iter->seq; 4227 unsigned long sym_flags = (tr->trace_flags & TRACE_ITER_SYM_MASK); 4228 struct trace_entry *entry; 4229 struct trace_event *event; 4230 4231 entry = iter->ent; 4232 4233 test_cpu_buff_start(iter); 4234 4235 event = ftrace_find_event(entry->type); 4236 4237 if (tr->trace_flags & TRACE_ITER_CONTEXT_INFO) { 4238 if (iter->iter_flags & TRACE_FILE_LAT_FMT) 4239 trace_print_lat_context(iter); 4240 else 4241 trace_print_context(iter); 4242 } 4243 4244 if (trace_seq_has_overflowed(s)) 4245 return TRACE_TYPE_PARTIAL_LINE; 4246 4247 if (event) { 4248 if (tr->trace_flags & TRACE_ITER_FIELDS) 4249 return print_event_fields(iter, event); 4250 /* 4251 * For TRACE_EVENT() events, the print_fmt is not 4252 * safe to use if the array has delta offsets 4253 * Force printing via the fields. 4254 */ 4255 if ((tr->text_delta)) { 4256 /* ftrace and system call events are still OK */ 4257 if ((event->type > __TRACE_LAST_TYPE) && > 4258 (event->funcs != > &enter_syscall_print_funcs) && > 4259 (event->funcs != &exit_syscall_print_funcs)) 4260 return print_event_fields(iter, event); 4261 } 4262 return event->funcs->trace(iter, sym_flags, event); 4263 } 4264 4265 trace_seq_printf(s, "Unknown type %d\n", entry->type); 4266 4267 return trace_handle_return(s); 4268 } 4269 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
