From: Ian Rogers irogers@google.com
[ 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@google.com Reviewed-by: Kan Liang kan.liang@linux.intel.com Cc: K Prateek Nayak kprateek.nayak@amd.com Cc: James Clark james.clark@arm.com Cc: Kaige Ye ye@kaige.org Cc: John Garry john.g.garry@oracle.com Signed-off-by: Namhyung Kim namhyung@kernel.org Link: https://lore.kernel.org/r/20240209204947.3873294-4-irogers@google.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 4688e39de52af..971fd77bd3e61 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -271,7 +271,7 @@ 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); }