Namhyung Kim 9ef30265a4 perf annotate: Fix segfault on sample histogram ...

A symbol can have no samples, then accessing the annotated_source->samples
hashmap will result in a segfault.

Fixes: a3f7768bcf ("perf annotate: Fix memory leak in annotated_source")
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20240510210452.2449944-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2024-05-11 13:03:13 -03:00

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