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Subject[PATCH 1/3] tracing: Add missing nest end to synth_event_trace_start() error case
Date
If the ring_buffer reserve in synth_event_trace_start() fails, the
matching ring_buffer_nest_end() should be called in the error code,
since nothing else will ever call it in this case.

Signed-off-by: Tom Zanussi <zanussi@kernel.org>
---
kernel/trace/trace_events_hist.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index b3bcfd8c7332..a546ffa14785 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -2043,6 +2043,7 @@ int synth_event_trace_start(struct trace_event_file *file,
entry = trace_event_buffer_reserve(&trace_state->fbuffer, file,
sizeof(*entry) + fields_size);
if (!entry) {
+ ring_buffer_nest_end(trace_state->buffer);
ret = -EINVAL;
goto out;
}
--
2.14.1
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