Fix subtraction overflow in metrics (#14290)

2020-12-27 16:26:22 -08:00
parent 7b49c85aa7
commit c693ffaa08
3 changed files with 7 additions and 4 deletions
--- a/runtime/src/accounts_db.rs
+++ b/runtime/src/accounts_db.rs
@ -2723,7 +2723,7 @@ impl AccountsDB {
    fn report_store_timings(&self) {
        let last = self.stats.last_store_report.load(Ordering::Relaxed);
        let now = solana_sdk::timing::timestamp();
-        if now - last > 1000
+        if now.saturating_sub(last) > 1000
            && self
                .stats
                .last_store_report