CC: [email protected] CC: [email protected] TO: "Tzvetomir Stoyanov (VMware)" <[email protected]> CC: "Steven Rostedt (VMware)" <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 26291c54e111ff6ba87a164d85d4a4e134b7315c commit: 7491e2c442781a1860181adb5ab472a52075f393 tracing: Add a probe that attaches to trace events date: 5 months ago :::::: branch date: 30 hours ago :::::: commit date: 5 months ago compiler: hppa-linux-gcc (GCC) 11.2.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> cppcheck warnings: (new ones prefixed by >>) >> kernel/trace/trace_probe.c:887:22: warning: Pointer addition with NULL >> pointer. [nullPointerArithmetic] pos += snprintf(buf + pos, LEN_OR_ZERO, ""%s", fmt); ^ kernel/trace/trace_probe.c:940:28: note: Calling function '__set_print_fmt', 2nd argument 'NULL' value is 0 len = __set_print_fmt(tp, NULL, 0, ptype); ^ kernel/trace/trace_probe.c:887:22: note: Null pointer addition pos += snprintf(buf + pos, LEN_OR_ZERO, ""%s", fmt); ^ kernel/trace/trace_probe.c:904:22: warning: Pointer addition with NULL pointer. [nullPointerArithmetic] pos += snprintf(buf + pos, LEN_OR_ZERO, "", %s", arg); ^ kernel/trace/trace_probe.c:940:28: note: Calling function '__set_print_fmt', 2nd argument 'NULL' value is 0 len = __set_print_fmt(tp, NULL, 0, ptype); ^ kernel/trace/trace_probe.c:904:22: note: Null pointer addition pos += snprintf(buf + pos, LEN_OR_ZERO, "", %s", arg); ^ cppcheck possible warnings: (new ones prefixed by >>, may not real problems) >> kernel/trace/trace_eprobe.c:777:4: warning: Consecutive return, break, >> continue, goto or throw statements are unnecessary. [duplicateBreak] break; ^ kernel/trace/trace_eprobe.c:780:3: warning: Consecutive return, break, continue, goto or throw statements are unnecessary. [duplicateBreak] break; ^ vim +777 kernel/trace/trace_eprobe.c 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 754) 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 755) static struct trace_event_call * 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 756) find_and_get_event(const char *system, const char *event_name) 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 757) { 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 758) struct trace_event_call *tp_event; 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 759) const char *name; 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 760) 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 761) list_for_each_entry(tp_event, &ftrace_events, list) { 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 762) /* Skip other probes and ftrace events */ 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 763) if (tp_event->flags & 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 764) (TRACE_EVENT_FL_IGNORE_ENABLE | 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 765) TRACE_EVENT_FL_KPROBE | 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 766) TRACE_EVENT_FL_UPROBE | 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 767) TRACE_EVENT_FL_EPROBE)) 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 768) continue; 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 769) if (!tp_event->class->system || 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 770) strcmp(system, tp_event->class->system)) 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 771) continue; 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 772) name = trace_event_name(tp_event); 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 773) if (!name || strcmp(event_name, name)) 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 774) continue; 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 775) if (!trace_event_try_get_ref(tp_event)) { 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 776) return NULL; 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 @777) break; 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 778) } 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 779) return tp_event; 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 780) break; 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 781) } 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 782) return NULL; 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 783) } 7491e2c442781a Tzvetomir Stoyanov (VMware 2021-08-19 784) --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected] _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
