This is an incremental patch on top of my earlier -v2 patch.

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index a7e5765..81c154e 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1045,6 +1045,7 @@ static void print_umasks(pfm_event_info_t *info)
        int i, ret;
        pfm_event_attr_info_t ainfo;
 
+       ainfo.size = sizeof(ainfo);
        pfm_for_each_event_attr(i, info) {
                ret = pfm_get_event_attr_info(info->idx, i,
                                              PFM_OS_PERF_EVENT_EXT, &ainfo);
@@ -1126,7 +1127,11 @@ void print_events(const char *event_glob)
                for (k = pinfo.first_event; k != -1; k = pfm_get_event_next(k)) 
{
                        pfm_event_info_t info;
 
+                       info.size = sizeof(info);
                        ret = pfm_get_event_info(k, PFM_OS_PERF_EVENT_EXT, 
&info);
+                       if (ret != PFM_SUCCESS) {
+                               fprintf(stderr, "libpfm4: %s\n", 
pfm_strerror(ret));
+                       }
                        if (info.pmu != pinfo.pmu)
                                continue;
 
-- 
1.7.4


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