From: Ian Rogers <irogers@xxxxxxxxxx>
[ Upstream commit 2543947c77e0e224bda86b4e7220c2f6714da463 ]
Cycles is recognized as part of a hard coded metric in stat-shadow.c,
it may call print_metric_only with a NULL fmt string leading to a
segfault. Handle the NULL fmt explicitly.
Fixes: 088519f318be ("perf stat: Move the display functions to stat-display.c")
Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
Reviewed-by: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
Cc: K Prateek Nayak <kprateek.nayak@xxxxxxx>
Cc: James Clark <james.clark@xxxxxxx>
Cc: Kaige Ye <ye@xxxxxxxxx>
Cc: John Garry <john.g.garry@xxxxxxxxxx>
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240209204947.3873294-4-irogers@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
tools/perf/util/stat-display.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index afe6db8e7bf4f..969ce40096330 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -560,7 +560,7 @@ static void print_metric_only(struct perf_stat_config *config,
if (color)
mlen += strlen(color) + sizeof(PERF_COLOR_RESET) - 1;
- color_snprintf(str, sizeof(str), color ?: "", fmt, val);
+ color_snprintf(str, sizeof(str), color ?: "", fmt ?: "", val);
fprintf(out, "%*s ", mlen, str);
os->first = false;
}
--
2.43.0
