git: openjdk/jdk: 8253262: Allocate in DumpRegion is not thread safe

[Yumin Qi]

Changeset: 12dfe1c9
Author:    Yumin Qi <minqi at openjdk.org>
Date:      2020-09-17 16:56:37 +0000
URL:       https://git.openjdk.java.net/jdk/commit/12dfe1c9

8253262: Allocate in DumpRegion is not thread safe

Reviewed-by: ccheung

! src/hotspot/share/oops/symbol.cpp
! src/hotspot/share/runtime/mutexLocker.cpp
! src/hotspot/share/runtime/mutexLocker.hpp