diff options
| author |   Masami Hiramatsu <mhiramat@kernel.org> | 2020-01-11 01:06:05 +0900 |
|---|---|---|
| committer |   Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-01-13 13:19:41 -0500 |
| commit | 48ac9488a597eb6116472b6cc0bd875e245e252c (patch) | |
| tree | 2981419f13cf343a1ee1f0591d387ad989af8416 /kernel/trace/trace_events_hist.c | |
| parent | tracing: Accept different type for synthetic event fields (diff) | |
| download | linux-dev-48ac9488a597eb6116472b6cc0bd875e245e252c.tar.xz linux-dev-48ac9488a597eb6116472b6cc0bd875e245e252c.zip | |
tracing: Add NULL trace-array check in print_synth_event()
Add NULL trace-array check in print_synth_event(), because
if we enable tp_printk option, iter->tr can be NULL.
Link: http://lkml.kernel.org/r/157867236536.17873.12529350542460184019.stgit@devnote2
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_events_hist.c')
| -rw-r--r-- | kernel/trace/trace_events_hist.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index 4f4759c6e972..1cb4c4c8e5b7 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -833,7 +833,7 @@ static enum print_line_t print_synth_event(struct trace_iterator *iter, fmt = synth_field_fmt(se->fields[i]->type); /* parameter types */ - if (tr->trace_flags & TRACE_ITER_VERBOSE) + if (tr && tr->trace_flags & TRACE_ITER_VERBOSE) trace_seq_printf(s, "%s ", fmt); snprintf(print_fmt, sizeof(print_fmt), "%%s=%s%%s", fmt); |