tools/mm: free the allocated memory

The comm_str memory needs to be freed if the search_pattern function call
fails in get_comm

[akpm@linux-foundation.org: fix whitespace]
Link: https://lkml.kernel.org/r/20241022012526.7597-1-liujing@cmss.chinamobile.com
Signed-off-by: Liu Jing <liujing@cmss.chinamobile.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/tools/mm/page_owner_sort.c b/tools/mm/page_owner_sort.c
index e1f264444342975f535a3954f05d0a018d97c1e8..880e36df0c118904f632f4f683050940e42b8c72 100644 (file)
--- a/tools/mm/page_owner_sort.c
+++ b/tools/mm/page_owner_sort.c
@@ -377,6 +377,7 @@ static char *get_comm(char *buf)
        if (errno != 0) {
                if (debug_on)
                        fprintf(stderr, "wrong comm in follow buf:\n%s\n", buf);
+               free(comm_str);
                return NULL;
        }