options: fix buffer overrun

[fio.git] / parse.c

diff --git a/parse.c b/parse.c
index c28d82efb0932a5cb37c8b2b9f715c09b78fbfb3..44bf950768d9b51bcc3e43ba30c2564614a6e4c6 100644 (file)
--- a/parse.c
+++ b/parse.c
@@ -786,6 +786,11 @@ static int __handle_option(const struct fio_option *o, const char *ptr,
                if (o->off1) {
                        cp = td_var(data, o, o->off1);
                        *cp = strdup(ptr);
+                       if (strlen(ptr) > o->maxlen - 1) {
+                               log_err("value exceeds max length of %d\n",
+                                       o->maxlen);
+                               return 1;
+                       }
                }
 
                if (fn)