OpenJDK java/util/stream/TabulatorsTest.java Object neither in heap nor stack-allocated

[pshipton]

https://openj9-jenkins.osuosl.org/job/Test_openjdk8_j9_sanity.openjdk_x86-64_mac_Nightly/372
jdk_util_1
java/util/stream/test/org/openjdk/tests/java/util/stream/TabulatorsTest.java

https://openj9-artifactory.osuosl.org/artifactory/ci-openj9/Test/Test_openjdk8_j9_sanity.openjdk_x86-64_mac_Nightly/372/openjdk_test_output.tar.gz

21:45:37  STDERR:
21:45:37  00007F8AAE98C900: Object neither in heap nor stack-allocated in thread MainThread
21:45:37  00007F8AAE98C900:	O-Slot=000070000AE5F028
21:45:37  00007F8AAE98C900:	O-Slot value=00007F8AAE9E2B10
21:45:37  00007F8AAE98C900:	PC=000000006FF9798B
21:45:37  00007F8AAE98C900:	framesWalked=1
21:45:37  00007F8AAE98C900:	arg0EA=00007F8AB18213D8
21:45:37  00007F8AAE98C900:	walkSP=00007F8AB18212A8
21:45:37  00007F8AAE98C900:	literals=0000000000000000
21:45:37  00007F8AAE98C900:	jitInfo=00007F8AB126B0E8
21:45:37  00007F8AAE98C900:	method=00007F8AB134EC20 (java/util/concurrent/ConcurrentHashMap.merge(Ljava/lang/Object;Ljava/lang/Object;Ljava/util/function/BiFunction;)Ljava/lang/Object;) (JIT)
21:45:37  00007F8AAE98C900:	stack=00007F8AB181B440-00007F8AB1822460
21:45:37  01:44:00.931 0x7f8aae97ef00    j9mm.479    *   ** ASSERTION FAILED ** at /Users/jenkins/workspace/Build_JDK8_x86-64_mac_Nightly/openj9/runtime/gc_glue_java/ScavengerRootScanner.hpp:109: ((MM_StackSlotValidator(MM_StackSlotValidator::NOT_ON_HEAP, *slotPtr, stackLocation, walkState).validate(_env)))
21:45:37  00007F8AAE9E2B00: Object neither in heap nor stack-allocated in thread ForkJoinPool.commonPool-worker-1
21:45:37  00007F8AAE9E2B00:	O-Slot=000070000AF294C8
21:45:37  00007F8AAE9E2B00:	O-Slot value=00007F8AAE9DE310
21:45:37  00007F8AAE9E2B00:	PC=000000006FF9798B
21:45:37  00007F8AAE9E2B00:	framesWalked=1
21:45:37  00007F8AAE9E2B00:	arg0EA=00007F8AAE9E22F8
21:45:37  00007F8AAE9E2B00:	walkSP=00007F8AAE9E21C8
21:45:37  00007F8AAE9E2B00:	literals=0000000000000000
21:45:37  00007F8AAE9E2B00:	jitInfo=00007F8AB126B0E8
21:45:37  00007F8AAE9E2B00:	method=00007F8AB134EC20 (java/util/concurrent/ConcurrentHashMap.merge(Ljava/lang/Object;Ljava/lang/Object;Ljava/util/function/BiFunction;)Ljava/lang/Object;) (JIT)
21:45:37  00007F8AAE9E2B00:	stack=00007F8AAE9DF840-00007F8AAE9E2820
21:45:37  01:44:00.931 0x7f8aae9de300    j9mm.479    *   ** ASSERTION FAILED ** at /Users/jenkins/workspace/Build_JDK8_x86-64_mac_Nightly/openj9/runtime/gc_glue_java/ScavengerRootScanner.hpp:109: ((MM_StackSlotValidator(MM_StackSlotValidator::NOT_ON_HEAP, *slotPtr, stackLocation, walkState).validate(_env)))

[pshipton]

Changes: 2fb0338...f1d0596

[dmitripivkine]

DDR seems failed to walk thread stack, so, I can not get frame info. The bogus value is an address of J9VMThread->arg0EA for both cases:

21:45:37  00007F8AAE98C900:	O-Slot=000070000AE5F028
21:45:37  00007F8AAE98C900:	O-Slot value=00007F8AAE9E2B10 <------
.....
21:45:37  00007F8AAE98C900: method=00007F8AB134EC20 (java/util/concurrent/ConcurrentHashMap.merge(Ljava/lang/Object;Ljava/lang/Object;Ljava/util/function/BiFunction;)Ljava/lang/Object;) (JIT)

> !findheader 0x00007f8aae9e2b10
Searching memory allocation header for 0x00007F8AAE9E2B10
Found memory allocation header, !j9x 0x7f8aae9e2a20,0xbb0
J9MemTag at 0x7f8aae9e2a00 {
    U_32 eyeCatcher = 0xb1234567;
    U_32 sumCheck = 0x1fd102ed;
    UDATA allocSize = 0xbb0;
    char* callSite = /Users/jenkins/workspace/Build_JDK8_x86-64_mac_Nightly/openj9/runtime/vm/vmthread.cpp:127;
    struct OMRMemCategory* category = !omrmemcategory 0x950bda0 (Threads);
}

!stack 0x7f8aae9e2b00	!j9vmthread 0x7f8aae9e2b00	!j9thread 0x7f8aae9d6250	tid 0x7460024 (122028068) // (ForkJoinPool.commonPool-worker-1)

> !j9vmthread 0x7f8aae9e2b00
J9VMThread at 0x7f8aae9e2b00 {
  Fields for J9VMThread:
	0x0: struct JNINativeInterface_* functions = !jninativeinterface_ 0x00000000093E1A28
	0x8: struct J9JavaVM* javaVM = !j9javavm 0x00007F8AAF818C20
	0x10: UDATA* arg0EA = !j9x 0x00007F8AAE9E21E8 <------- 0x00007F8AAE9E2B10 is address of this slot
	0x18: UDATA* bytecodes = !j9x 0x0000000000000000
	0x20: UDATA* sp = !j9x 0x00007F8AAE9E21C8

--------------------------------------------------------------------

21:45:37  00007F8AAE9E2B00: O-Slot=000070000AF294C8
21:45:37  00007F8AAE9E2B00: O-Slot value=00007F8AAE9DE310 <------
......
21:45:37  00007F8AAE9E2B00: method=00007F8AB134EC20 (java/util/concurrent/ConcurrentHashMap.merge(Ljava/lang/Object;Ljava/lang/Object;Ljava/util/function/BiFunction;)Ljava/lang/Object;) (JIT)

> !findheader 0x00007F8AAE9DE310
Searching memory allocation header for 0x00007F8AAE9DE310
Found memory allocation header, !j9x 0x7f8aae9de220,0xbb0
J9MemTag at 0x7f8aae9de200 {
    U_32 eyeCatcher = 0xb1234567;
    U_32 sumCheck = 0x1fd2caed;
    UDATA allocSize = 0xbb0;
    char* callSite = /Users/jenkins/workspace/Build_JDK8_x86-64_mac_Nightly/openj9/runtime/vm/vmthread.cpp:127;
    struct OMRMemCategory* category = !omrmemcategory 0x950bda0 (Threads);
}

!stack 0x7f8aae9de300	!j9vmthread 0x7f8aae9de300	!j9thread 0x7f8aae9d67d8	tid 0x7460025 (122028069) // (ForkJoinPool.commonPool-worker-2)

> !j9vmthread 0x7f8aae9de300
J9VMThread at 0x7f8aae9de300 {
  Fields for J9VMThread:
	0x0: struct JNINativeInterface_* functions = !jninativeinterface_ 0x00000000093E1A28
	0x8: struct J9JavaVM* javaVM = !j9javavm 0x00007F8AAF818C20
	0x10: UDATA* arg0EA = !j9x 0x00007F8AB18706E8 <-------- 0x00007F8AAE9DE310 is address of this slot
	0x18: UDATA* bytecodes = !j9x 0x0000000000000000

[pshipton]

Closing, assuming fixed by #15978