git: openjdk/jdk17u: master: 8274338: com/sun/jdi/RedefineCrossEvent.java failed "assert(m != __null) failed: NULL mirror"

[Zhengyu Gu]

Changeset: 6c86a417
Author:    Zhengyu Gu <zgu at openjdk.org>
Date:      2021-11-05 14:06:55 +0000
URL:       https://git.openjdk.java.net/jdk17u/commit/6c86a4176bbd4dd5624d5a3f51c86c561dd76232

8274338: com/sun/jdi/RedefineCrossEvent.java failed "assert(m != __null) failed: NULL mirror"

Backport-of: 172aed1a2d75756b140cb723133ac5fb67f7745e

! src/hotspot/share/classfile/classLoaderData.cpp
! src/hotspot/share/oops/instanceKlass.cpp