[PATCH v1 1/2] perf stat: Clear reset_group for each stat run

[Ian Rogers]

If a weak group is broken then the reset_group flag remains set for
the next run. Having reset_group set means the counter isn't created
and ultimately a segfault.

A simple reproduction of this is:
perf stat -r2 -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}:W
which will be added as a test in the next patch.

Fixes: 4804e0111662 ("perf stat: Use affinity for opening events")
Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
 tools/perf/builtin-stat.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 7fb81a44672d..54cd29d07ca8 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -826,6 +826,7 @@ static int __run_perf_stat(int argc, const char **argv, int run_idx)
 	}
 
 	evlist__for_each_entry(evsel_list, counter) {
+		counter->reset_group = false;
 		if (bpf_counter__load(counter, &target))
 			return -1;
 		if (!evsel__is_bpf(counter))
-- 
2.37.2.609.g9ff673ca1a-goog