1 files changed, 12 insertions, 0 deletions

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 2ec4b60aff6..9f6d630d531 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -256,6 +256,18 @@ static struct hist_entry *add_hist_entry(struct hists *hists,
                 if (!cmp) {
                         he->period += period;
                         ++he->nr_events;
+
+                        /* If the map of an existing hist_entry has
+                         * become out-of-date due to an exec() or
+                         * similar, update it.  Otherwise we will
+                         * mis-adjust symbol addresses when computing
+                         * the history counter to increment.
+                         */
+                        if (he->ms.map != entry->ms.map) {
+                                he->ms.map = entry->ms.map;
+                                if (he->ms.map)
+                                        he->ms.map->referenced = true;
+                        }
                         goto out;
                 }