tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: ae0c77e1bc6963c67c6c09e8c72959fcb1ed8d5f commit: 00cf3d672a9dd409418647e9f98784c339c3ff63 [7031/9183] tracing: Allow synthetic events to pass around stacktraces config: i386-randconfig-m021 (https://download.01.org/0day-ci/archive/20230130/202301302110.mEtNwkBD-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> smatch warnings: kernel/trace/trace_events_synth.c:567 trace_event_raw_event_synth() warn: inconsistent indenting vim +567 kernel/trace/trace_events_synth.c 514 515 static notrace void trace_event_raw_event_synth(void *__data, 516 u64 *var_ref_vals, 517 unsigned int *var_ref_idx) 518 { 519 unsigned int i, n_u64, val_idx, len, data_size = 0; 520 struct trace_event_file *trace_file = __data; 521 struct synth_trace_event *entry; 522 struct trace_event_buffer fbuffer; 523 struct trace_buffer *buffer; 524 struct synth_event *event; 525 int fields_size = 0; 526 527 event = trace_file->event_call->data; 528 529 if (trace_trigger_soft_disabled(trace_file)) 530 return; 531 532 fields_size = event->n_u64 * sizeof(u64); 533 534 for (i = 0; i < event->n_dynamic_fields; i++) { 535 unsigned int field_pos = event->dynamic_fields[i]->field_pos; 536 char *str_val; 537 538 val_idx = var_ref_idx[field_pos]; 539 str_val = (char *)(long)var_ref_vals[val_idx]; 540 541 len = kern_fetch_store_strlen((unsigned long)str_val); 542 543 fields_size += len; 544 } 545 546 /* 547 * Avoid ring buffer recursion detection, as this event 548 * is being performed within another event. 549 */ 550 buffer = trace_file->tr->array_buffer.buffer; 551 ring_buffer_nest_start(buffer); 552 553 entry = trace_event_buffer_reserve(&fbuffer, trace_file, 554 sizeof(*entry) + fields_size); 555 if (!entry) 556 goto out; 557 558 for (i = 0, n_u64 = 0; i < event->n_fields; i++) { 559 val_idx = var_ref_idx[i]; 560 if (event->fields[i]->is_string) { 561 char *str_val = (char *)(long)var_ref_vals[val_idx]; 562 563 len = trace_string(entry, event, str_val, 564 event->fields[i]->is_dynamic, 565 data_size, &n_u64); 566 data_size += len; /* only dynamic string increments */ > 567 } if (event->fields[i]->is_stack) { 568 long *stack = (long *)(long)var_ref_vals[val_idx]; 569 570 len = trace_stack(entry, event, stack, 571 data_size, &n_u64); 572 data_size += len; 573 } else { 574 struct synth_field *field = event->fields[i]; 575 u64 val = var_ref_vals[val_idx]; 576 577 switch (field->size) { 578 case 1: 579 *(u8 *)&entry->fields[n_u64] = (u8)val; 580 break; 581 582 case 2: 583 *(u16 *)&entry->fields[n_u64] = (u16)val; 584 break; 585 586 case 4: 587 *(u32 *)&entry->fields[n_u64] = (u32)val; 588 break; 589 590 default: 591 entry->fields[n_u64] = val; 592 break; 593 } 594 n_u64++; 595 } 596 } 597 598 trace_event_buffer_commit(&fbuffer); 599 out: 600 ring_buffer_nest_end(buffer); 601 } 602 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
