Commit 48ac9488 authored by Masami Hiramatsu's avatar Masami Hiramatsu Committed by Steven Rostedt (VMware)
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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: default avatarMasami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent b05e89ae

kernel/trace/trace_events_hist.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

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