Ensure that fread() string is always NULL terminated

[fio.git] / backend.c

diff --git a/backend.c b/backend.c
index 5ac365925fdd469a948643bd9ed14bc9759b3f94..b05e5437705ccf7cb4957b9c656a84cd76eaaa11 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -1110,7 +1110,8 @@ static int switch_ioscheduler(struct thread_data *td)
        /*
         * Read back and check that the selected scheduler is now the default.
         */
-       ret = fread(tmp, 1, sizeof(tmp), f);
+       memset(tmp, 0, sizeof(tmp));
+       ret = fread(tmp, 1, sizeof(tmp) - 1, f);
        if (ferror(f) || ret < 0) {
                td_verror(td, errno, "fread");
                fclose(f);