1 files changed, 2 insertions, 1 deletions

diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 62f165a9fa40..1e69ea57a1cc 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -559,6 +559,7 @@ static int setup_sorting(struct list_head *sort_list, const char *arg)
 {
         char *tok;
         char *str = strdup(arg);
+        char *pos = str;
 
         if (!str) {
                 pr_err("%s: strdup failed\n", __func__);
@@ -566,7 +567,7 @@ static int setup_sorting(struct list_head *sort_list, const char *arg)
         }
 
         while (true) {
-                tok = strsep(&str, ",");
+                tok = strsep(&pos, ",");
                 if (!tok)
                         break;
                 if (sort_dimension__add(tok, sort_list) < 0) {