2 files changed, 12 insertions, 3 deletions

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 482f0517b61e..413bd62eedb1 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -978,8 +978,8 @@ static int hist_browser__dump(struct hist_browser *browser)
         fp = fopen(filename, "w");
         if (fp == NULL) {
                 char bf[64];
-                strerror_r(errno, bf, sizeof(bf));
-                ui_helpline__fpush("Couldn't write to %s: %s", filename, bf);
+                const char *err = strerror_r(errno, bf, sizeof(bf));
+                ui_helpline__fpush("Couldn't write to %s: %s", filename, err);
                 return -1;
         }
 
diff --git a/tools/perf/util/target.c b/tools/perf/util/target.c
index 1064d5b148ad..3f59c496e64c 100644
--- a/tools/perf/util/target.c
+++ b/tools/perf/util/target.c
@@ -110,8 +110,17 @@ int perf_target__strerror(struct perf_target *target, int errnum,
         int idx;
         const char *msg;
 
+        BUG_ON(buflen > 0);
+
         if (errnum >= 0) {
-                strerror_r(errnum, buf, buflen);
+                const char *err = strerror_r(errnum, buf, buflen);
+
+                if (err != buf) {
+                        size_t len = strlen(err);
+                        char *c = mempcpy(buf, err, min(buflen - 1, len));
+                        *c = '\0';
+                }
+
                 return 0;
         }