hg: jdk8u/hs-dev/hotspot: 8030027: nsk/jvmti/scenarios/hotswap/HS101/hs101t006 Crashed the vm on Linux-amd64: SIGSEGV in JavaThread::last_java_vframe(RegisterMap*)+0xfa

Changeset: 7b35e546ba31 Author: sspitsyn Date: 2014-01-24 00:20 -0800 URL: http://hg.openjdk.java.net/jdk8u/hs-dev/hotspot/rev/7b35e546ba31 8030027: nsk/jvmti/scenarios/hotswap/HS101/hs101t006 Crashed the vm on Linux-amd64: SIGSEGV in JavaThread::last_java_vframe(RegisterMap*)+0xfa Summary: Add a safe guard to VMOp_GetCurrentLocation against non-walkable stack of target thread exiting from Java execution Reviewed-by: mgronlun, dholmes, sla, dcubed Contributed-by: serguei.spitsyn@oracle.com ! src/share/vm/prims/jvmtiEnvThreadState.cpp