JDK-6584008 (jvmtiStringPrimitiveCallback should not be invoked when string value is null) in 1.7.0_45 (original) (raw)

Leitzell, Harry Harry.Leitzell at grainger.com
Fri Jan 3 13:40:06 PST 2014


I believe I've run into this bug's race condition while using Dynatrace's JVMTI profiling: https://bugs.openjdk.java.net/browse/JDK-6584008

I don't have time to write a patch right now that I think would be accepted but I can if desired.

SNIP

SIGSEGV (0xb) at pc=0x00002ad23bcf3d2b, pid=2934, tid=1090189632

JRE version: Java(TM) SE Runtime Environment (7.0_45-b18) (build

1.7.0_45-b18)

Java VM: Java HotSpot(TM) 64-Bit Server VM (24.45-b08 mixed mode

linux-amd64 compressed oops)

Problematic frame:

V [libjvm.so+0x708d2b] invoke_string_value_callback(int (*)(long,

long, long*, unsigned short const*, int, void*), CallbackWrapper*, oopDesc*, void*)+0x11b

SNIP

--------------- T H R E A D --------------- Current thread (0x00002aaab02d5000): VMThread [stack: 0x0000000040eaf000,0x0000000040fb0000] [id=2966] siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR), si_addr=0x000000000000000c

SNIP

Register to memory mapping: RAX=0x000000000000000c is an unknown value RBX=0x000000062789c4a0 is an oop java.lang.String

Stack: [0x0000000040eaf000,0x0000000040fb0000], sp=0x0000000040faecc0, free space=1023k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) V [libjvm.so+0x708d2b] invoke_string_value_callback(int ()(long, long, long, unsigned short const*, int, void*), CallbackWrapper*, oopDesc*, void*)+0x11b V [libjvm.so+0x70a9d6] IterateThroughHeapObjectClosure::do_object(oopDesc*)+0x476 V [libjvm.so+0x8c8dca] ContiguousSpace::object_iterate_from(WaterMark, ObjectClosure*)+0x7a V [libjvm.so+0x5628bb] GenCollectedHeap::object_iterate(ObjectClosure*)+0x3b V [libjvm.so+0x70b8e3] VM_HeapIterateOperation::doit()+0x43 V [libjvm.so+0x99b955] VM_Operation::evaluate()+0x55 V [libjvm.so+0x999d8a] VMThread::evaluate_operation(VM_Operation*)+0xba V [libjvm.so+0x99a10e] VMThread::loop()+0x1ce V [libjvm.so+0x99a580] VMThread::run()+0x70 V [libjvm.so+0x815288] java_start(Thread*)+0x108

VM_Operation (0x0000000045c63170): HeapIterateOperation, mode: safepoint, requested by thread 0x00002aae38027000

Cheers, Harry

Harry Leitzell | Principal Performance Engineer, eCommerce | W.W. Grainger, Inc. 500 W Madison St, Suite 3300 | Chicago, IL 60661-4512 | +1 (312) 802-7400



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