runtime: fix possible deadlock in in_mem_accounts_index (#26046)

Chain-Fox · web-flow · commit 355e09e1fb56 · 2022-06-23T11:35:47.000-05:00
diff --git a/runtime/src/in_mem_accounts_index.rs b/runtime/src/in_mem_accounts_index.rs
@@ -147,6 +147,7 @@ impl<T: IndexValue> InMemAccountsIndex<T> {
                 result.push((*k, Arc::clone(v)));
             }
         });
+        drop(map);
         self.hold_range_in_memory(range, false);
         Self::update_stat(&self.stats().items, 1);
         Self::update_time_stat(&self.stats().items_us, m);

Original file line number	Diff line number	Diff line change
`@@ -147,6 +147,7 @@ impl<T: IndexValue> InMemAccountsIndex<T> {`
`147`	`147`	`result.push((*k, Arc::clone(v)));`
`148`	`148`	`}`
`149`	`149`	`});`
	`150`	`+ drop(map);`
`150`	`151`	`self.hold_range_in_memory(range, false);`
`151`	`152`	`Self::update_stat(&self.stats().items, 1);`
`152`	`153`	`Self::update_time_stat(&self.stats().items_us, m);`