-
Bug
-
Resolution: Fixed
-
P3
-
8-shenandoah, 11-shenandoah, 14
-
b20
Testing caught a failure in current jdk/jdk, in a rare corner case:
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/home/jenkins/workspace/nightly/jdk-jdk/src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.cpp:203), pid=36780, tid=36787
# guarantee(_heap->cancelled_gc()) failed: only valid when evac has been cancelled
--------------- S U M M A R Y ------------
Command Line: -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UnlockDiagnosticVMOptions -XX:ShenandoahGCHeuristics=aggressive -XX:+ShenandoahVerifyOptoBarriers -XX:+ShenandoahOOMDuringEvacALot -XX:CompileCommandFile=/tmp/jmh6571298855984735825compilecommand org.openjdk.jmh.runner.ForkedMain 127.0.0.1 34213
--------------- T H R E A D ---------------
Current thread (0x00007f7de8294800): VMThread "VM Thread" [stack: 0x00007f7dd0132000,0x00007f7dd0232000] [id=36787]
Stack: [0x00007f7dd0132000,0x00007f7dd0232000], sp=0x00007f7dd0230450, free space=1017k
Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x1637b73] ShenandoahHeapRegion::make_pinned()+0x83
V [libjvm.so+0x1616c48] ShenandoahHeap::sync_pinned_region_status()+0x98
V [libjvm.so+0x161e466] ShenandoahHeap::op_degenerated(ShenandoahHeap::ShenandoahDegenPoint)+0xc6
V [libjvm.so+0x161e94c] ShenandoahHeap::entry_degenerated(int)+0x10c
V [libjvm.so+0x16a5d37] VM_ShenandoahDegeneratedGC::doit()+0x37
V [libjvm.so+0x18a64ed] VM_Operation::evaluate()+0x13d
V [libjvm.so+0x18d611a] VMThread::evaluate_operation(VM_Operation*)+0x15a
V [libjvm.so+0x18d68b5] VMThread::loop()+0x2b5
V [libjvm.so+0x18d6f73] VMThread::run()+0xc3
V [libjvm.so+0x17f268b] Thread::call_run()+0xfb
V [libjvm.so+0x140b609] thread_native_entry(Thread*)+0x119
This says that transition from cset to pinned-cset is invalid when GC was not cancelled. However, this was only true before
The check is excessive and should be removed.
- blocks
-
JDK-8232575 Shenandoah: asynchronous object/region pinning
-
- Resolved
-