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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2016-10-03 10:09:04 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2016-10-03 10:09:04 -0400 |
| commit | 013205a8f9e60998b39c106470957030585b5851 (patch) | |
| tree | f51936bd6cc9a71beccd41f3367e5e64cd755a0d | |
| parent | fca725695474085397339abe07de4a91a781269e (diff) | |
| download | trace-cmd-013205a8f9e60998b39c106470957030585b5851.tar.gz | |
kernelshark: Fix null pointer when next record does not exist
When testing if the plot is in irq context or not, it looks at the current
record as well as the next record to see the context. Unfortunately, if the
next record does not exist (null is returned) it would cause a crash.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| -rw-r--r-- | trace-plot-task.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/trace-plot-task.c b/trace-plot-task.c index 4343a4c1..5aa0af96 100644 --- a/trace-plot-task.c +++ b/trace-plot-task.c @@ -527,7 +527,10 @@ static int task_plot_event(struct graph_info *ginfo, /* It takes two events to be in an irq */ if (in_irq) { next_record = tracecmd_peek_data(ginfo->handle, record->cpu); - in_irq = record_is_interrupt(ginfo, next_record, FALSE); + if (next_record) + in_irq = record_is_interrupt(ginfo, next_record, FALSE); + else + in_irq = 0; } if (task_info->last_cpu != record->cpu) { |