lkml.org 
[lkml]   [2019]   [Dec]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v5 14/22] tracing: Add NULL trace-array check in print_synth_event()
Date
Add NULL trace-array check in print_synth_event(), because
if we enable tp_printk option, iter->tr can be NULL.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
0 files changed

diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index dae2c25b209a..137fc50f2b35 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);
\
 
 \ /
  Last update: 2019-12-26 15:07    [W:0.167 / U:0.520 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site