Thread 46 (Thread 0x7f9ef4350700 (LWP 6884)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411ec93 in os::PlatformEvent::park() (this=0x7f9eb4193500) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:1938 #2 0x00007f9f140ef19d in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9ed0008c80, millis=millis@entry=0, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9e6400f800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1292 #3 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=0, __the_thread__=__the_thread__@entry=0x7f9e6400f800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #4 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9ef434f920, ms=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #5 0x00007f9efc179aef in () #6 0x0000000618a04420 in () #7 0x00007f9ef434f9b8 in () #8 0x00007f9ef445c7d0 in () #9 0xa76fa90ee4a05400 in () #10 0x0000000000000000 in () Thread 45 (Thread 0x7f9e2b6fa700 (LWP 6841)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9e1806d800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9e1806d800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9e1806d800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f140eeb77 in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9e1806d800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f140eeb77 in ThreadStateTransition::transition(JavaThread*, JavaThreadState, JavaThreadState) (from=_thread_blocked, to=_thread_in_vm, thread=0x7f9e1806d800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:97 #9 0x00007f9f140eeb77 in ThreadStateTransition::trans(JavaThreadState, JavaThreadState) (this=, to=_thread_in_vm, from=_thread_blocked) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:125 #10 0x00007f9f140eeb77 in ThreadBlockInVM::~ThreadBlockInVM() (this=, __in_chrg=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:249 #11 0x00007f9f140eeb77 in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9e6000bd80, millis=millis@entry=60000, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9e1806d800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1284 #12 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=60000, __the_thread__=__the_thread__@entry=0x7f9e1806d800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #13 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9e2b6f9820, ms=60000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #14 0x00007f9efc179aef in () #15 0x00000007ffc028f0 in () #16 0x0000000000000002 in () #17 0x00007f9e1806d800 in () #18 0x00007f9e2b6f9898 in () #19 0x00007f9e2b6f9918 in () #20 0x00007f9e1806d800 in () #21 0x00007f9e2b6f9880 in () #22 0x00007f9f13d3a1db in InterpreterRuntime::monitorenter(JavaThread*, BasicObjectLock*) (thread=0x0, elem=0x7f9e2b6f9880) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/basicLock.hpp:73 #23 0x00007f9ef445d033 in () #24 0x0000000000000000 in () Thread 44 (Thread 0x7f9e2b7fb700 (LWP 6824)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9e50014000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9e50014000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9e50014000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f140eeb77 in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9e50014000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f140eeb77 in ThreadStateTransition::transition(JavaThread*, JavaThreadState, JavaThreadState) (from=_thread_blocked, to=_thread_in_vm, thread=0x7f9e50014000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:97 #9 0x00007f9f140eeb77 in ThreadStateTransition::trans(JavaThreadState, JavaThreadState) (this=, to=_thread_in_vm, from=_thread_blocked) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:125 #10 0x00007f9f140eeb77 in ThreadBlockInVM::~ThreadBlockInVM() (this=, __in_chrg=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:249 #11 0x00007f9f140eeb77 in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9e6000bd80, millis=millis@entry=60000, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9e50014000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1284 #12 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=60000, __the_thread__=__the_thread__@entry=0x7f9e50014000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #13 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9e2b7fa820, ms=60000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #14 0x00007f9efc179aef in () #15 0x00000007ffc028f0 in () #16 0x0000000000000002 in () #17 0x00007f9e50014000 in () #18 0x00007f9e2b7fa898 in () #19 0x00007f9e2b7fa918 in () #20 0x00007f9e50014000 in () #21 0x00007f9e2b7fa880 in () #22 0x00007f9f13d3a1db in InterpreterRuntime::monitorenter(JavaThread*, BasicObjectLock*) (thread=0x0, elem=0x7f9e2b7fa880) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/basicLock.hpp:73 #23 0x00007f9ef445d033 in () #24 0x0000000000000000 in () Thread 43 (Thread 0x7f9e2b8fc700 (LWP 6823)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411ec93 in os::PlatformEvent::park() (this=0x7f9f0dbf6200) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:1938 #2 0x00007f9f140ef19d in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9ed0006680, millis=millis@entry=0, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9f0d14b800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1292 #3 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=0, __the_thread__=__the_thread__@entry=0x7f9f0d14b800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #4 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9e2b8fb930, ms=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #5 0x00007f9efc179aef in () #6 0x00000006132ceca0 in () #7 0x00000006132ceca0 in () #8 0x00007f9e2b8fb970 in () #9 0x00007f9e2b8fb970 in () #10 0x00007f9ebc455288 in () #11 0x00007f9e2b8fb9c0 in () #12 0x00000006132ceca0 in () #13 0x00000000a470a002 in () #14 0x00007f9e2b8fba50 in () #15 0x00007f9ef52a4c24 in () #16 0x00007f9e2b8fb9c0 in () #17 0x00000006132ceca0 in () #18 0x000000061740a740 in () #19 0x00000006133fd720 in () #20 0x00000006133fd720 in () #21 0x000000770000006e in () #22 0x0000000000000000 in () Thread 42 (Thread 0x7f9e2bbfd700 (LWP 6822)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411f1d6 in Parker::park(bool, long) (this=0x7f9f0def3090, isAbsolute=isAbsolute@entry=false, time=time@entry=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:2129 #2 0x00007f9f14420f6b in Unsafe_Park(JNIEnv*, jobject, jboolean, jlong) (env=, unsafe=, isAbsolute=, time=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:2041 #3 0x00007f9ef4463051 in () #4 0x0000000000000000 in () Thread 41 (Thread 0x7f9e2befe700 (LWP 6821)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9f0dcc9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9f0dcc9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9f0dcc9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f1411f19a in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9f0dcc9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f1411f19a in ThreadStateTransition::transition(JavaThread*, JavaThreadState, JavaThreadState) (to=_thread_in_vm, from=_thread_blocked, thread=0x7f9f0dcc9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:97 #9 0x00007f9f1411f19a in ThreadStateTransition::trans(JavaThreadState, JavaThreadState) (this=, to=_thread_in_vm, from=_thread_blocked) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:125 #10 0x00007f9f1411f19a in ThreadBlockInVM::~ThreadBlockInVM() (this=, __in_chrg=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:249 #11 0x00007f9f1411f19a in Parker::park(bool, long) (this=0x7f9f0dcc6e40, isAbsolute=isAbsolute@entry=false, time=time@entry=999705894) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:2108 #12 0x00007f9f14420f6b in Unsafe_Park(JNIEnv*, jobject, jboolean, jlong) (env=, unsafe=, isAbsolute=, time=999705894) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:2041 #13 0x00007f9ef4463051 in () #14 0x0000000000000000 in () Thread 40 (Thread 0x7f9e2bfff700 (LWP 6820)): #0 0x00007f9f14ab1b0f in accept () at /lib64/libpthread.so.0 #1 0x00007f9f13961f67 in LinuxAttachListener::dequeue() () at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/attachListener_linux.cpp:353 #2 0x00007f9f139620a7 in AttachListener::dequeue() () at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/attachListener_linux.cpp:447 #3 0x00007f9f13961102 in attach_listener_thread_entry (thread=, __the_thread__=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/services/attachListener.cpp:369 #4 0x00007f9f13961102 in attach_listener_thread_entry(JavaThread*, Thread*) (thread=, __the_thread__=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/services/attachListener.cpp:355 #5 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9eb8004800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:1262 #6 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9eb8004800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:1957 #7 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9eb8004800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #8 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9eb8004800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #9 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #10 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 39 (Thread 0x7f9e6c1b5700 (LWP 6819)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411f1d6 in Parker::park(bool, long) (this=0x7f9e340203d0, isAbsolute=isAbsolute@entry=false, time=time@entry=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:2129 #2 0x00007f9f14420f6b in Unsafe_Park(JNIEnv*, jobject, jboolean, jlong) (env=, unsafe=, isAbsolute=, time=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:2041 #3 0x00007f9ef4463051 in () #4 0x00007f9e6c1b45c0 in () #5 0x00007f9f13e053dc in JVM_CurrentThread(JNIEnv*, jclass) (env=0x800a24048, threadClass=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:3089 #6 0x00007f9ef445d033 in () #7 0x0000000000000000 in () Thread 38 (Thread 0x7f9e6f41e700 (LWP 6818)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9f0dc68800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9f0dc68800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9f0dc68800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f143e7df4 in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9f0dc68800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f143e7df4 in ThreadStateTransition::transition(JavaThread*, JavaThreadState, JavaThreadState) (from=_thread_blocked, to=_thread_in_vm, thread=0x7f9f0dc68800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:97 #9 0x00007f9f143e7df4 in ThreadStateTransition::trans(JavaThreadState, JavaThreadState) (this=, to=_thread_in_vm, from=_thread_blocked) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:125 #10 0x00007f9f143e7df4 in ThreadBlockInVM::~ThreadBlockInVM() (this=, __in_chrg=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:249 #11 0x00007f9f143e7df4 in JavaThread::sleep(long) (this=this@entry=0x7f9f0dc68800, millis=millis@entry=3000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:3431 #12 0x00007f9f13e108fd in JVM_Sleep(JNIEnv*, jclass, jlong) (env=, threadClass=, millis=3000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:3063 #13 0x00007f9ef4463051 in () #14 0x00007f9e6c550040 in () #15 0x0000000000000000 in () Thread 37 (Thread 0x7f9e6f92e700 (LWP 6817)): #0 0x00007f9f14ab1d32 in recvfrom () at /lib64/libpthread.so.0 #1 0x00007f9f10fe8f19 in NET_RecvFrom (s=s@entry=90, buf=buf@entry=0x7f9e6f91d770, len=len@entry=4096, flags=flags@entry=0, from=from@entry=0x7f9e6f91d750, fromlen=fromlen@entry=0x7f9e6f91d748) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/java.base/linux/native/libnet/linux_close.c:378 #2 0x00007f9f10fe4e42 in Java_java_net_PlainDatagramSocketImpl_receive0 (env=0x7f9f0dc67b10, this=, packet=0x7f9e6f92d848) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/java.base/unix/native/libnet/PlainDatagramSocketImpl.c:818 #3 0x00007f9ef4463f66 in () #4 0x00007f9e6f92d828 in () #5 0x00007f9ef4463a03 in () #6 0x0000000000000000 in () Thread 36 (Thread 0x7f9e6fc79700 (LWP 6816)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9f0dc5b800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9f0dc5b800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9f0dc5b800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f143e7df4 in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9f0dc5b800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f143e7df4 in ThreadStateTransition::transition(JavaThread*, JavaThreadState, JavaThreadState) (from=_thread_blocked, to=_thread_in_vm, thread=0x7f9f0dc5b800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:97 #9 0x00007f9f143e7df4 in ThreadStateTransition::trans(JavaThreadState, JavaThreadState) (this=, to=_thread_in_vm, from=_thread_blocked) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:125 #10 0x00007f9f143e7df4 in ThreadBlockInVM::~ThreadBlockInVM() (this=, __in_chrg=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:249 #11 0x00007f9f143e7df4 in JavaThread::sleep(long) (this=this@entry=0x7f9f0dc5b800, millis=millis@entry=5000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:3431 #12 0x00007f9f13e108fd in JVM_Sleep(JNIEnv*, jclass, jlong) (env=, threadClass=, millis=5000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:3063 #13 0x00007f9ef4463051 in () #14 0x00007f9e6fc78910 in () #15 0x00007f9e6c510194 in () #16 0x00007f9e6fc789a8 in () #17 0x00007f9e6fc78938 in () #18 0x0000000000000000 in () Thread 35 (Thread 0x7f9e6e4fa700 (LWP 6814)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411ec93 in os::PlatformEvent::park() (this=0x7f9f0cdfae00) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:1938 #2 0x00007f9f140ef19d in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9ed0006a80, millis=millis@entry=0, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9f0cecd000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1292 #3 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=0, __the_thread__=__the_thread__@entry=0x7f9f0cecd000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #4 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9e6e4f98e8, ms=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #5 0x00007f9ef4463051 in () #6 0x00007f9f0cecd000 in () #7 0x00007f9e6e4f98f0 in () #8 0x00000006158d6d78 in () #9 0x00007f9f0cecd000 in () #10 0x00007f9e6e4f9870 in () #11 0x0000000000000000 in () Thread 34 (Thread 0x7f9e6ccb7700 (LWP 6813)): #0 0x00007f9f14ab0ca6 in do_futex_wait.constprop () at /lib64/libpthread.so.0 #1 0x00007f9f14ab0da8 in __new_sem_wait_slow.constprop.0 () at /lib64/libpthread.so.0 #2 0x00007f9f141c8fe2 in PosixSemaphore::wait() (this=0x7f9f0c0988f0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/semaphore_posix.cpp:64 #3 0x00007f9f14488be5 in Semaphore::wait() (this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/semaphore.hpp:55 #4 0x00007f9f14488be5 in SemaphoreGangTaskDispatcher::worker_wait_for_task() (this=0x7f9f0c0988c0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.cpp:155 #5 0x00007f9f14487c01 in GangWorker::wait_for_task() (this=0x7f9ed4005800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.hpp:208 #6 0x00007f9f14487c01 in GangWorker::loop() (this=0x7f9ed4005800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.cpp:340 #7 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9ed4005800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #8 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9ed4005800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #9 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #10 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 33 (Thread 0x7f9e6cdb9700 (LWP 6812)): #0 0x00007f9f14ab0ca6 in do_futex_wait.constprop () at /lib64/libpthread.so.0 #1 0x00007f9f14ab0da8 in __new_sem_wait_slow.constprop.0 () at /lib64/libpthread.so.0 #2 0x00007f9f141c8fe2 in PosixSemaphore::wait() (this=0x7f9f0c0988f0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/semaphore_posix.cpp:64 #3 0x00007f9f14488be5 in Semaphore::wait() (this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/semaphore.hpp:55 #4 0x00007f9f14488be5 in SemaphoreGangTaskDispatcher::worker_wait_for_task() (this=0x7f9f0c0988c0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.cpp:155 #5 0x00007f9f14487c01 in GangWorker::wait_for_task() (this=0x7f9ed4004800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.hpp:208 #6 0x00007f9f14487c01 in GangWorker::loop() (this=0x7f9ed4004800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.cpp:340 #7 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9ed4004800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #8 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9ed4004800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #9 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #10 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 32 (Thread 0x7f9e6cebb700 (LWP 6811)): #0 0x00007f9f14ab0ca6 in do_futex_wait.constprop () at /lib64/libpthread.so.0 #1 0x00007f9f14ab0da8 in __new_sem_wait_slow.constprop.0 () at /lib64/libpthread.so.0 #2 0x00007f9f141c8fe2 in PosixSemaphore::wait() (this=0x7f9f0c0988f0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/semaphore_posix.cpp:64 #3 0x00007f9f14488be5 in Semaphore::wait() (this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/semaphore.hpp:55 #4 0x00007f9f14488be5 in SemaphoreGangTaskDispatcher::worker_wait_for_task() (this=0x7f9f0c0988c0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.cpp:155 #5 0x00007f9f14487c01 in GangWorker::wait_for_task() (this=0x7f9eec003000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.hpp:208 #6 0x00007f9f14487c01 in GangWorker::loop() (this=0x7f9eec003000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.cpp:340 #7 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9eec003000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #8 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9eec003000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #9 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #10 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 31 (Thread 0x7f9e6e3f9700 (LWP 6809)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9f0cd05800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9f0cd05800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9f0cd05800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f143e7df4 in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9f0cd05800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f143e7df4 in ThreadStateTransition::transition(JavaThread*, JavaThreadState, JavaThreadState) (from=_thread_blocked, to=_thread_in_vm, thread=0x7f9f0cd05800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:97 #9 0x00007f9f143e7df4 in ThreadStateTransition::trans(JavaThreadState, JavaThreadState) (this=, to=_thread_in_vm, from=_thread_blocked) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:125 #10 0x00007f9f143e7df4 in ThreadBlockInVM::~ThreadBlockInVM() (this=, __in_chrg=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:249 #11 0x00007f9f143e7df4 in JavaThread::sleep(long) (this=this@entry=0x7f9f0cd05800, millis=millis@entry=1000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:3431 #12 0x00007f9f13e108fd in JVM_Sleep(JNIEnv*, jclass, jlong) (env=, threadClass=, millis=1000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:3063 #13 0x00007f9ef4463051 in () #14 0x00007f9ef445d033 in () #15 0x3ff0000000000000 in () #16 0x00007f9e6e3f8800 in () #17 0x0000000000000000 in () Thread 30 (Thread 0x7f9e6e7fb700 (LWP 6806)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411f1d6 in Parker::park(bool, long) (this=0x7f9f0cc02aa0, isAbsolute=isAbsolute@entry=false, time=time@entry=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:2129 #2 0x00007f9f14420f6b in Unsafe_Park(JNIEnv*, jobject, jboolean, jlong) (env=, unsafe=, isAbsolute=, time=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:2041 #3 0x00007f9ef4463051 in () #4 0x00007f9e6e7fa5c0 in () #5 0x00007f9f13e053dc in JVM_CurrentThread(JNIEnv*, jclass) (env=0x800a24048, threadClass=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:3089 #6 0x00007f9ef445d033 in () #7 0x0000000000000000 in () Thread 29 (Thread 0x7f9e6e8fc700 (LWP 6805)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411ec93 in os::PlatformEvent::park() (this=0x7f9e682b3e00) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:1938 #2 0x00007f9f140ef19d in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9e60009880, millis=millis@entry=0, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9e682b3000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1292 #3 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=0, __the_thread__=__the_thread__@entry=0x7f9e682b3000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #4 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9e6e8fb930, ms=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #5 0x00007f9efc179aef in () #6 0x00000007ffc033b0 in () #7 0x00000007ffc033b0 in () #8 0x00007f9e6e8fb970 in () #9 0x00007f9e6e8fb970 in () #10 0x00007f9ebc455288 in () #11 0x00007f9e6e8fb9c0 in () #12 0x00000007ffc033b0 in () #13 0xfffffffff170d002 in () #14 0x00007f9e6e8fba50 in () #15 0x00007f9ef52a4c24 in () #16 0x00007f9e6e8fb9c0 in () #17 0x00000007ffc033b0 in () #18 0x00000007ff99e3f8 in () #19 0x00000007ffc14b50 in () #20 0x000000060e601488 in () #21 0x00007f9ebc45524c in () #22 0x00007f9e6e8fba00 in () #23 0x00000007ffc033b0 in () #24 0x0000000000000003 in () #25 0x00000007ffc033b0 in () #26 0x00007f9e6e8fba50 in () #27 0x00007f9ef445d033 in () #28 0x00007f9e6e8fba50 in () #29 0x00007f9ef445cd80 in () #30 0x0000000000000000 in () Thread 28 (Thread 0x7f9e6e9fd700 (LWP 6804)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411ec93 in os::PlatformEvent::park() (this=0x7f9e681ea200) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:1938 #2 0x00007f9f140ef19d in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9e60006080, millis=millis@entry=0, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9e68296800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1292 #3 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=0, __the_thread__=__the_thread__@entry=0x7f9e68296800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #4 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9e6e9fc9c0, ms=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #5 0x00007f9ef4463051 in () #6 0x0000000000000000 in () Thread 27 (Thread 0x7f9e6efff700 (LWP 6802)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9e6803c800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9e6803c800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9e6803c800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f140eeb77 in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9e6803c800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f140eeb77 in ThreadStateTransition::transition(JavaThread*, JavaThreadState, JavaThreadState) (from=_thread_blocked, to=_thread_in_vm, thread=0x7f9e6803c800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:97 #9 0x00007f9f140eeb77 in ThreadStateTransition::trans(JavaThreadState, JavaThreadState) (this=, to=_thread_in_vm, from=_thread_blocked) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:125 #10 0x00007f9f140eeb77 in ThreadBlockInVM::~ThreadBlockInVM() (this=, __in_chrg=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:249 #11 0x00007f9f140eeb77 in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9e94008a80, millis=millis@entry=30000, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9e6803c800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1284 #12 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=30000, __the_thread__=__the_thread__@entry=0x7f9e6803c800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #13 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9e6effe8f0, ms=30000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #14 0x00007f9efc179aef in () #15 0x00000007ffc02680 in () #16 0x00007f9e6effe970 in () #17 0x00007f9e6effea08 in () #18 0x00007f9e6803c800 in () #19 0x00007f9e6effe940 in () #20 0x00007f9f13d3a1db in InterpreterRuntime::monitorenter(JavaThread*, BasicObjectLock*) (thread=0x0, elem=0x7f9e6effe948) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/basicLock.hpp:73 #21 0x00007f9ef445d033 in () #22 0x00007f9ef445d033 in () #23 0x0000000000007530 in () #24 0x0000000000000000 in () Thread 26 (Thread 0x7f9ebc195700 (LWP 6801)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411ec93 in os::PlatformEvent::park() (this=0x7f9f0caff900) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:1938 #2 0x00007f9f140ef19d in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9e60007f80, millis=millis@entry=0, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9f0cb28800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1292 #3 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=0, __the_thread__=__the_thread__@entry=0x7f9f0cb28800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #4 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9ebc194928, ms=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #5 0x00007f9ef4463051 in () #6 0x00007f9f123d9a50 in () #7 0x0000000000000000 in () Thread 25 (Thread 0x7f9ebc296700 (LWP 6800)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411ec93 in os::PlatformEvent::park() (this=0x7f9f0cb0e600) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:1938 #2 0x00007f9f140ef19d in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9e94006980, millis=millis@entry=0, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9f0cb10000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1292 #3 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=0, __the_thread__=__the_thread__@entry=0x7f9f0cb10000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #4 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9ebc295930, ms=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #5 0x00007f9efc179aef in () #6 0x00000007ffc03060 in () #7 0x00000007ffc03060 in () #8 0x00007f9ebc295970 in () #9 0x00007f9ebc295970 in () #10 0x00007f9ebc455288 in () #11 0x00007f9ebc2959c0 in () #12 0x00000007ffc03060 in () #13 0xffffffffd7d71002 in () #14 0x00007f9ebc295a50 in () #15 0x00007f9ef52a4c24 in () #16 0x00007f9ebc2959c0 in () #17 0x00000007ffc03060 in () #18 0x00000006147b22d0 in () #19 0x0000000612204128 in () #20 0x0000000612204128 in () #21 0x00007f9ebc45524c in () #22 0x00007f9ebc295a00 in () #23 0x00000007ffc03060 in () #24 0x0000000000000003 in () #25 0x00000007ffc03060 in () #26 0x00007f9ebc295a50 in () #27 0x00007f9ef445d033 in () #28 0x00007f9ebc295a50 in () #29 0x00007f9ef445cd80 in () #30 0x0000000000000001 in () #31 0x00007f9ef445cd80 in () #32 0x00000007ffc03060 in () #33 0x00007f9ebc295a08 in () #34 0x00007f9ebc454f91 in () #35 0x00007f9ebc295a68 in () #36 0x00007f9ebc455320 in () #37 0x0000000000000000 in () Thread 24 (Thread 0x7f9ebc397700 (LWP 6799)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411ec93 in os::PlatformEvent::park() (this=0x7f9f0c566d00) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:1938 #2 0x00007f9f140ef19d in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9e94004b80, millis=millis@entry=0, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9f0cb08000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1292 #3 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=0, __the_thread__=__the_thread__@entry=0x7f9f0cb08000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #4 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9ebc3968d8, ms=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #5 0x00007f9ef4463051 in () #6 0x00000008003e8370 in () #7 0x00007f9f0cb08000 in () #8 0x00007f9ebc396938 in () #9 0x00007f9ef4471532 in () #10 0x00007f9ebc396860 in () #11 0x0000000000000000 in () Thread 23 (Thread 0x7f9ebc698700 (LWP 6798)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9f0ca40000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9f0ca40000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9f0ca40000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f1411f19a in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9f0ca40000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f1411f19a in ThreadStateTransition::transition(JavaThread*, JavaThreadState, JavaThreadState) (to=_thread_in_vm, from=_thread_blocked, thread=0x7f9f0ca40000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:97 #9 0x00007f9f1411f19a in ThreadStateTransition::trans(JavaThreadState, JavaThreadState) (this=, to=_thread_in_vm, from=_thread_blocked) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:125 #10 0x00007f9f1411f19a in ThreadBlockInVM::~ThreadBlockInVM() (this=, __in_chrg=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:249 #11 0x00007f9f1411f19a in Parker::park(bool, long) (this=0x7f9f0ca40c40, isAbsolute=isAbsolute@entry=false, time=time@entry=29999969983) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:2108 #12 0x00007f9f14420f6b in Unsafe_Park(JNIEnv*, jobject, jboolean, jlong) (env=, unsafe=, isAbsolute=, time=29999969983) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:2041 #13 0x00007f9ef4463051 in () #14 0x0000000000000000 in () Thread 22 (Thread 0x7f9ebd00c700 (LWP 6797)): #0 0x00007f9f149c56f7 in poll () at /lib64/libc.so.6 #1 0x00007f9ebecaa1ce in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0 #2 0x00007f9ebecaa593 in g_main_loop_run () at /lib64/libglib-2.0.so.0 #3 0x00007f9ebee94f3a in gdbus_shared_thread_func () at /lib64/libgio-2.0.so.0 #4 0x00007f9ebecd34c2 in g_thread_proxy () at /lib64/libglib-2.0.so.0 #5 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #6 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 21 (Thread 0x7f9ebd80d700 (LWP 6796)): #0 0x00007f9f149c56f7 in poll () at /lib64/libc.so.6 #1 0x00007f9ebecaa1ce in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0 #2 0x00007f9ebecaa303 in g_main_context_iteration () at /lib64/libglib-2.0.so.0 #3 0x00007f9ebecaa351 in glib_worker_main () at /lib64/libglib-2.0.so.0 #4 0x00007f9ebecd34c2 in g_thread_proxy () at /lib64/libglib-2.0.so.0 #5 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #6 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 20 (Thread 0x7f9ed83fb700 (LWP 6795)): #0 0x00007f9f14ab20b5 in nanosleep () at /lib64/libpthread.so.0 #1 0x00007f9f1411d726 in os::naked_short_nanosleep(long) (ns=999000000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:656 #2 0x00007f9f1411d726 in os::naked_short_sleep(long) (ms=ms@entry=999) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:662 #3 0x00007f9f143e4de3 in WatcherThread::run() (this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:1489 #4 0x00007f9f143e4de3 in WatcherThread::run() (this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:1449 #5 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c44f000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #6 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c44f000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #7 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #8 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 19 (Thread 0x7f9ed84fc700 (LWP 6794)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411f46b in os::PlatformMonitor::wait(long) (this=this@entry=0x7f9f0c0834a8, millis=millis@entry=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.hpp:322 #2 0x00007f9f140cdbd9 in Monitor::wait_without_safepoint_check(long) (this=this@entry=0x7f9f0c0834a0, timeout=timeout@entry=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutex.cpp:203 #3 0x00007f9f140e4012 in MonitorLocker::wait(long, bool) (timeout=0, as_suspend_equivalent=true, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutexLocker.hpp:254 #4 0x00007f9f140e4012 in NotificationThread::notification_thread_entry(JavaThread*, Thread*) (jt=0x7f9f0c44d000, __the_thread__=0x7f9f0c44d000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/notificationThread.cpp:109 #5 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c44d000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:1262 #6 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c44d000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:1957 #7 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c44d000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #8 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c44d000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #9 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #10 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 18 (Thread 0x7f9ef414e700 (LWP 6793)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411f46b in os::PlatformMonitor::wait(long) (this=this@entry=0x7f9f0c0833f8, millis=millis@entry=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.hpp:322 #2 0x00007f9f140cdbd9 in Monitor::wait_without_safepoint_check(long) (this=this@entry=0x7f9f0c0833f0, timeout=timeout@entry=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutex.cpp:203 #3 0x00007f9f141c96c5 in MonitorLocker::wait(long, bool) (timeout=0, as_suspend_equivalent=false, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutexLocker.hpp:254 #4 0x00007f9f141c96c5 in ServiceThread::service_thread_entry(JavaThread*, Thread*) (jt=0x7f9f0c443000, __the_thread__=0x7f9f0c443000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/serviceThread.cpp:141 #5 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c443000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:1262 #6 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c443000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:1957 #7 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c443000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #8 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c443000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #9 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #10 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 17 (Thread 0x7f9ed85fe700 (LWP 6792)): #0 0x00007f9f14ab174d in __lll_lock_wait () at /lib64/libpthread.so.0 #1 0x00007f9f14aaacf9 in pthread_mutex_lock () at /lib64/libpthread.so.0 #2 0x00007f9f140cda3e in os::PlatformMutex::lock() (this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.hpp:279 #3 0x00007f9f140cda3e in Mutex::lock_contended(Thread*) (this=, self=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutex.cpp:96 #4 0x00007f9f140cdac3 in Mutex::lock(Thread*) (self=0x7f9f0c255800, this=0x7f9f0c084100) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutex.cpp:109 #5 0x00007f9f140cdac3 in Mutex::lock() (this=this@entry=0x7f9f0c084100) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutex.cpp:117 #6 0x00007f9f13dab69e in MutexLocker::MutexLocker(Mutex*, Mutex::SafepointCheckFlag) (flag=Mutex::_safepoint_check_flag, mutex=0x7f9f0c084100, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutexLocker.hpp:202 #7 0x00007f9f13dab69e in JfrThreadSampler::task_stacktrace(JfrSampleType, JavaThread**) (this=this@entry=0x7f9f0c255800, last_thread=last_thread@entry=0x7f9f0c255b18, type=JAVA_SAMPLE) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/jfr/periodic/sampling/jfrThreadSampler.cpp:525 #8 0x00007f9f13dabafd in JfrThreadSampler::run() (this=0x7f9f0c255800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/jfr/periodic/sampling/jfrThreadSampler.cpp:495 #9 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c255800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #10 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c255800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #11 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #12 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 16 (Thread 0x7f9ed86ff700 (LWP 6791)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411f46b in os::PlatformMonitor::wait(long) (this=this@entry=0x7f9f0c0843c8, millis=millis@entry=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.hpp:322 #2 0x00007f9f140cdd13 in Monitor::wait(long, bool) (this=this@entry=0x7f9f0c0843c0, timeout=timeout@entry=0, as_suspend_equivalent=as_suspend_equivalent@entry=false) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutex.cpp:238 #3 0x00007f9f1445f6a4 in MonitorLocker::wait(long, bool) (timeout=0, as_suspend_equivalent=false, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutexLocker.hpp:252 #4 0x00007f9f1445f6a4 in VMThread::execute(VM_Operation*) (op=0x7f9ed86fe530) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/vmThread.cpp:682 #5 0x00007f9f13be4183 in EventEmitter::emit(ObjectSampler*, long, bool) (sampler=0x7f9ed40037d0, cutoff_ticks=cutoff_ticks@entry=6840000000000, emit_all=emit_all@entry=false) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/jfr/leakprofiler/checkpoint/eventEmitter.cpp:69 #6 0x00007f9f13f6570b in LeakProfiler::emit_events(long, bool) (cutoff_ticks=6840000000000, emit_all=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/jfr/leakprofiler/leakProfiler.cpp:90 #7 0x00007f9f13d7767f in jfr_emit_old_object_samples(JNIEnv*, jobject, jlong, jboolean) (env=, jvm=, cutoff_ticks=6840000000000, emit_all=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/jfr/jni/jfrJniMethod.cpp:325 #8 0x00007f9ef4463051 in () #9 0x0000000000000000 in () Thread 15 (Thread 0x7f9ef424f700 (LWP 6789)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9f0c473800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9f0c473800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9f0c473800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f140eeb77 in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9f0c473800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f140eeb77 in ThreadStateTransition::transition(JavaThread*, JavaThreadState, JavaThreadState) (from=_thread_blocked, to=_thread_in_vm, thread=0x7f9f0c473800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:97 #9 0x00007f9f140eeb77 in ThreadStateTransition::trans(JavaThreadState, JavaThreadState) (this=, to=_thread_in_vm, from=_thread_blocked) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:125 #10 0x00007f9f140eeb77 in ThreadBlockInVM::~ThreadBlockInVM() (this=, __in_chrg=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:249 #11 0x00007f9f140eeb77 in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9ed0008980, millis=millis@entry=20, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9f0c473800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1284 #12 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=20, __the_thread__=__the_thread__@entry=0x7f9f0c473800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #13 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9ef424e7f0, ms=20) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #14 0x00007f9efc179aef in () #15 0x000000060e0db9f8 in () #16 0x00007f9efc44afcc in () #17 0x0000016efabf75c9 in () #18 0x00000001fff5c6f3 in () #19 0x0000000000000015 in () #20 0x0000000000000014 in () #21 0x00000007ffa38398 in () #22 0x00007f9e00000018 in () #23 0x00007f9ef424e918 in () #24 0x00007f9ef56f6f54 in () #25 0x00007f9ef424e870 in () #26 0x000000060e0db9f8 in () #27 0xffffffffffffffff in () #28 0x00007f9efc3ccaed in () #29 0x00007f9ef424e918 in () #30 0x00007f9ef56f698c in () #31 0x0000000000000001 in () #32 0x000000060e0db9f8 in () #33 0x00007f9ef424e918 in () #34 0x00007f9ef445cb10 in () #35 0x00007f9ef424e918 in () #36 0x00007f9ef445d033 in () #37 0x00007f9ef445d033 in () #38 0x0000000000000014 in () #39 0x0000000000000000 in () Thread 14 (Thread 0x7f9f101be700 (LWP 6786)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411f46b in os::PlatformMonitor::wait(long) (this=this@entry=0x7f9f0c085658, millis=millis@entry=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.hpp:322 #2 0x00007f9f140cdd13 in Monitor::wait(long, bool) (this=0x7f9f0c085650, timeout=timeout@entry=0, as_suspend_equivalent=as_suspend_equivalent@entry=false) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutex.cpp:238 #3 0x00007f9f13d98313 in recorderthread_entry(JavaThread*, Thread*) (thread=, unused=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/jfr/recorder/service/jfrRecorderThreadLoop.cpp:59 #4 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c3e9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:1262 #5 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c3e9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:1957 #6 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c3e9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #7 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c3e9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #8 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #9 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 13 (Thread 0x7f9f11107700 (LWP 6785)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9f0c348800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9f0c348800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9f0c348800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f140eeb77 in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9f0c348800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f140eeb77 in ThreadStateTransition::transition(JavaThread*, JavaThreadState, JavaThreadState) (from=_thread_blocked, to=_thread_in_vm, thread=0x7f9f0c348800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:97 #9 0x00007f9f140eeb77 in ThreadStateTransition::trans(JavaThreadState, JavaThreadState) (this=, to=_thread_in_vm, from=_thread_blocked) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:125 #10 0x00007f9f140eeb77 in ThreadBlockInVM::~ThreadBlockInVM() (this=, __in_chrg=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:249 #11 0x00007f9f140eeb77 in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9ed0004f80, millis=millis@entry=60000, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9f0c348800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1284 #12 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=60000, __the_thread__=__the_thread__@entry=0x7f9f0c348800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #13 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9f11106810, ms=60000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #14 0x00007f9efc179aef in () #15 0x000000060e093de8 in () #16 0x00007f9efbfd1773 in () #17 0x00007f9f11106878 in () #18 0x000000080039c190 in () #19 0x00007f9f11d672f0 in () #20 0x000000060e00acb0 in () #21 0x000000080031a0e8 in () #22 0x0000000000000000 in () Thread 12 (Thread 0x7f9f11208700 (LWP 6784)): #0 0x00007f9f14aae73c in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411f3c2 in os::PlatformMonitor::wait(long) (this=this@entry=0x7f9f0c082f28, millis=, millis@entry=86400000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.hpp:322 #2 0x00007f9f140cdbd9 in Monitor::wait_without_safepoint_check(long) (this=this@entry=0x7f9f0c082f20, timeout=timeout@entry=86400000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutex.cpp:203 #3 0x00007f9f143893ec in MonitorLocker::wait(long, bool) (timeout=86400000, as_suspend_equivalent=false, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutexLocker.hpp:254 #4 0x00007f9f143893ec in NMethodSweeper::sweeper_loop() () at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/sweeper.cpp:344 #5 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c2db000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:1262 #6 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c2db000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:1957 #7 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c2db000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #8 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c2db000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #9 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #10 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 11 (Thread 0x7f9f11309700 (LWP 6783)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9f0c2d9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9f0c2d9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9f0c2d9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f140cddb0 in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9f0c2d9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f140cddb0 in ThreadBlockInVMWithDeadlockCheck::~ThreadBlockInVMWithDeadlockCheck() (this=, __in_chrg=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:296 #9 0x00007f9f140cddb0 in Monitor::wait(long, bool) (this=this@entry=0x7f9f0c085180, timeout=timeout@entry=5000, as_suspend_equivalent=as_suspend_equivalent@entry=false) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutex.cpp:230 #10 0x00007f9f13b034d6 in MonitorLocker::wait(long, bool) (timeout=5000, as_suspend_equivalent=false, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutexLocker.hpp:252 #11 0x00007f9f13b034d6 in CompileQueue::get() (this=this@entry=0x7f9f0c2d0810) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/compiler/compileBroker.cpp:444 #12 0x00007f9f13b06097 in CompileBroker::compiler_thread_loop() () at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/compiler/compileBroker.cpp:1819 #13 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c2d9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:1262 #14 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c2d9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:1957 #15 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c2d9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #16 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c2d9000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #17 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #18 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 10 (Thread 0x7f9f1140a700 (LWP 6782)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9f0c2d7000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9f0c2d7000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9f0c2d7000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f140cddb0 in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9f0c2d7000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f140cddb0 in ThreadBlockInVMWithDeadlockCheck::~ThreadBlockInVMWithDeadlockCheck() (this=, __in_chrg=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/interfaceSupport.inline.hpp:296 #9 0x00007f9f140cddb0 in Monitor::wait(long, bool) (this=this@entry=0x7f9f0c085180, timeout=timeout@entry=5000, as_suspend_equivalent=as_suspend_equivalent@entry=false) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutex.cpp:230 #10 0x00007f9f13b034d6 in MonitorLocker::wait(long, bool) (timeout=5000, as_suspend_equivalent=false, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutexLocker.hpp:252 #11 0x00007f9f13b034d6 in CompileQueue::get() (this=this@entry=0x7f9f0c2d07e0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/compiler/compileBroker.cpp:444 #12 0x00007f9f13b06097 in CompileBroker::compiler_thread_loop() () at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/compiler/compileBroker.cpp:1819 #13 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c2d7000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:1262 #14 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c2d7000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:1957 #15 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c2d7000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #16 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c2d7000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #17 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #18 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 9 (Thread 0x7f9f1150b700 (LWP 6781)): #0 0x00007f9f14ab0ca6 in do_futex_wait.constprop () at /lib64/libpthread.so.0 #1 0x00007f9f14ab0da8 in __new_sem_wait_slow.constprop.0 () at /lib64/libpthread.so.0 #2 0x00007f9f141c8fe2 in PosixSemaphore::wait() (this=0x7f9f0c01c330) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/semaphore_posix.cpp:64 #3 0x00007f9f141102d1 in Semaphore::wait() (this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/semaphore.hpp:55 #4 0x00007f9f141102d1 in check_pending_signals () at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:2776 #5 0x00007f9f141102d1 in os::signal_wait() () at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:2794 #6 0x00007f9f141044d5 in signal_thread_entry(JavaThread*, Thread*) (thread=, __the_thread__=0x7f9f0c2d5000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/os.cpp:356 #7 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c2d5000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:1262 #8 0x00007f9f143e5e7e in JavaThread::thread_main_inner() (this=0x7f9f0c2d5000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:1957 #9 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c2d5000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #10 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c2d5000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #11 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #12 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 8 (Thread 0x7f9f1160c700 (LWP 6780)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411ec93 in os::PlatformEvent::park() (this=0x7f9f0c2cfe00) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.cpp:1938 #2 0x00007f9f140ef19d in ObjectMonitor::wait(long, bool, Thread*) (this=0x7f9ed0002e80, millis=millis@entry=0, interruptible=interruptible@entry=true, __the_thread__=__the_thread__@entry=0x7f9f0c2cf000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/objectMonitor.cpp:1292 #3 0x00007f9f14395412 in ObjectSynchronizer::wait(Handle, long, Thread*) (obj=..., millis=millis@entry=0, __the_thread__=__the_thread__@entry=0x7f9f0c2cf000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/synchronizer.cpp:451 #4 0x00007f9f13dfda32 in JVM_MonitorWait(JNIEnv*, jobject, jlong) (env=, handle=0x7f9f1160b8e0, ms=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:664 #5 0x00007f9ef4463051 in () #6 0x0000000000000000 in () Thread 7 (Thread 0x7f9f1170d700 (LWP 6779)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411f46b in os::PlatformMonitor::wait(long) (this=this@entry=0x7f9f0c084948, millis=millis@entry=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.hpp:322 #2 0x00007f9f140cdd13 in Monitor::wait(long, bool) (this=this@entry=0x7f9f0c084940, timeout=timeout@entry=0, as_suspend_equivalent=as_suspend_equivalent@entry=false) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutex.cpp:238 #3 0x00007f9f13e0619c in MonitorLocker::wait(long, bool) (as_suspend_equivalent=false, timeout=0, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutexLocker.hpp:252 #4 0x00007f9f13e0619c in JVM_WaitForReferencePendingList(JNIEnv*) (env=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/prims/jvm.cpp:3230 #5 0x00007f9ef4463051 in () #6 0x00007f9f0c2cdba0 in () #7 0x00007f9f1170c928 in () #8 0x0000000000000000 in () Thread 6 (Thread 0x7f9f1180f700 (LWP 6778)): #0 0x00007f9f14ab25a6 in waitpid () at /lib64/libpthread.so.0 #1 0x00007f9f1411457d in os::fork_and_exec(char*, bool) (cmd=cmd@entry=0x7f9f148c78a0 "gdb /proc/6773/exe 6773", use_vfork_if_available=use_vfork_if_available@entry=false) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:5907 #2 0x00007f9f14114a0f in os::start_debugging(char*, int) (buf=buf@entry=0x7f9f148c78a0 "gdb /proc/6773/exe 6773", buflen=buflen@entry=2000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:6036 #3 0x00007f9f14458f02 in VMError::show_message_box(char*, int) (buflen=, buf=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/vmError.cpp:1682 #4 0x00007f9f14458f02 in VMError::report_and_die(int, char const*, char const*, __va_list_tag*, Thread*, unsigned char*, void*, void*, char const*, int, unsigned long) (id=id@entry=-536870912, message=message@entry=0x7f9f14510026 "ShouldNotReachHere()", detail_fmt=detail_fmt@entry=0x7f9f1452269e "%s", detail_args=detail_args@entry=0x7f9f1180e658, thread=0x7f9f0c2ca000, pc=pc@entry=0x0, siginfo=0x0, context=0x7f9f1485be80 , filename=0x7f9f14564c88 "src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.cpp", lineno=256, size=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/vmError.cpp:1399 #5 0x00007f9f144598b1 in VMError::report_and_die(Thread*, void*, char const*, int, char const*, char const*, __va_list_tag*) (thread=, context=context@entry=0x7f9f1485be80 , filename=filename@entry=0x7f9f14564c88 "src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.cpp", lineno=lineno@entry=256, message=message@entry=0x7f9f14510026 "ShouldNotReachHere()", detail_fmt=detail_fmt@entry=0x7f9f1452269e "%s", detail_args=0x7f9f1180e658) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/vmError.cpp:1316 #6 0x00007f9f13b2b0bb in report_vm_error(char const*, int, char const*, char const*, ...) (file=file@entry=0x7f9f14564c88 "src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.cpp", line=line@entry=256, error_msg=error_msg@entry=0x7f9f14510026 "ShouldNotReachHere()", detail_fmt=detail_fmt@entry=0x7f9f1452269e "%s") at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.hpp:831 #7 0x00007f9f13b2b3cc in report_vm_error(char const*, int, char const*) (error_msg=0x7f9f14510026 "ShouldNotReachHere()", line=line@entry=256, file=file@entry=0x7f9f14564c88 "src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.cpp") at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/debug.cpp:306 #8 0x00007f9f13b2b3cc in report_should_not_reach_here(char const*, int) (file=file@entry=0x7f9f14564c88 "src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.cpp", line=line@entry=256) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/debug.cpp:306 #9 0x00007f9f141ed892 in ShenandoahBarrierSet::load_reference_barrier_native(oopDesc*, unsigned int*) (this=, obj=, load_addr=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.cpp:256 #10 0x00007f9f13974dcc in BFSClosure::process_root_set() (this=this@entry=0x7f9f1180e830) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/jfr/leakprofiler/chains/bfsClosure.cpp:110 #11 0x00007f9f13974dcc in BFSClosure::process() (this=this@entry=0x7f9f1180e830) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/jfr/leakprofiler/chains/bfsClosure.cpp:102 #12 0x00007f9f141570d9 in PathToGcRootsOperation::doit() (this=0x7f9ed86fe530) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/jfr/leakprofiler/chains/pathToGcRootsOperation.cpp:122 #13 0x00007f9f1445a36a in VM_Operation::evaluate() (this=this@entry=0x7f9ed86fe530) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/vmOperations.cpp:67 #14 0x00007f9f1445fb23 in VMThread::evaluate_operation(VM_Operation*) (op=0x7f9ed86fe530, this=0x7f9ed86fe530) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/vmThread.cpp:399 #15 0x00007f9f14460024 in VMThread::loop() (this=this@entry=0x7f9f0c2ca000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/vmThread.cpp:545 #16 0x00007f9f14460376 in VMThread::run() (this=0x7f9f0c2ca000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/vmThread.cpp:298 #17 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c2ca000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #18 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c2ca000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #19 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #20 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 5 (Thread 0x7f9f12632700 (LWP 6777)): #0 0x00007f9f14aae3d5 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0 #1 0x00007f9f1411f46b in os::PlatformMonitor::wait(long) (this=this@entry=0x7f9f0c0843c8, millis=millis@entry=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/os_posix.hpp:322 #2 0x00007f9f140cdbd9 in Monitor::wait_without_safepoint_check(long) (this=this@entry=0x7f9f0c0843c0, timeout=timeout@entry=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutex.cpp:203 #3 0x00007f9f1445f792 in MonitorLocker::wait(long, bool) (timeout=0, as_suspend_equivalent=false, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/mutexLocker.hpp:254 #4 0x00007f9f1445f792 in VMThread::execute(VM_Operation*) (op=op@entry=0x7f9f12631bf0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/vmThread.cpp:682 #5 0x00007f9f1426967d in ShenandoahHeap::vmop_entry_init_mark() (this=this@entry=0x7f9f0c0969d0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp:2536 #6 0x00007f9f1425efd2 in ShenandoahControlThread::service_concurrent_normal_cycle(GCCause::Cause) (this=this@entry=0x7f9f0c257800, cause=cause@entry=GCCause::_shenandoah_concurrent_gc) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shenandoah/shenandoahControlThread.cpp:362 #7 0x00007f9f14260226 in ShenandoahControlThread::run_service() (this=0x7f9f0c257800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shenandoah/shenandoahControlThread.cpp:198 #8 0x00007f9f13b19969 in ConcurrentGCThread::run() (this=0x7f9f0c257800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/concurrentGCThread.cpp:50 #9 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c257800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #10 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c257800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #11 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #12 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 4 (Thread 0x7f9f12734700 (LWP 6776)): #0 0x00007f9f14ab0ca6 in do_futex_wait.constprop () at /lib64/libpthread.so.0 #1 0x00007f9f14ab0da8 in __new_sem_wait_slow.constprop.0 () at /lib64/libpthread.so.0 #2 0x00007f9f141c8fe2 in PosixSemaphore::wait() (this=0x7f9f0c099f50) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/semaphore_posix.cpp:64 #3 0x00007f9f14488be5 in Semaphore::wait() (this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/semaphore.hpp:55 #4 0x00007f9f14488be5 in SemaphoreGangTaskDispatcher::worker_wait_for_task() (this=0x7f9f0c099f20) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.cpp:155 #5 0x00007f9f14487c01 in GangWorker::wait_for_task() (this=0x7f9f0c09a000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.hpp:208 #6 0x00007f9f14487c01 in GangWorker::loop() (this=0x7f9f0c09a000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.cpp:340 #7 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c09a000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #8 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c09a000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #9 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #10 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 3 (Thread 0x7f9f12836700 (LWP 6775)): #0 0x00007f9f14ab0ca6 in do_futex_wait.constprop () at /lib64/libpthread.so.0 #1 0x00007f9f14ab0da8 in __new_sem_wait_slow.constprop.0 () at /lib64/libpthread.so.0 #2 0x00007f9f141c8fe2 in PosixSemaphore::wait() (this=0x7f9f0c0988f0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/posix/semaphore_posix.cpp:64 #3 0x00007f9f14488be5 in Semaphore::wait() (this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/semaphore.hpp:55 #4 0x00007f9f14488be5 in SemaphoreGangTaskDispatcher::worker_wait_for_task() (this=0x7f9f0c0988c0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.cpp:155 #5 0x00007f9f14487c01 in GangWorker::wait_for_task() (this=0x7f9f0c099000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.hpp:208 #6 0x00007f9f14487c01 in GangWorker::loop() (this=0x7f9f0c099000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/gc/shared/workgroup.cpp:340 #7 0x00007f9f143ead4b in Thread::call_run() (this=this@entry=0x7f9f0c099000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:399 #8 0x00007f9f14115327 in thread_native_entry(Thread*) (thread=0x7f9f0c099000) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/os_linux.cpp:789 #9 0x00007f9f14aa84c0 in start_thread () at /lib64/libpthread.so.0 #10 0x00007f9f149d0163 in clone () at /lib64/libc.so.6 Thread 2 (Thread 0x7f9f133c0700 (LWP 6774)): #0 0x00007f9f149cae0d in syscall () at /lib64/libc.so.6 #1 0x00007f9f1446d892 in futex (op_arg=257, futex_op=128, addr=0x7f9ed4000d24) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #2 0x00007f9f1446d892 in LinuxWaitBarrier::wait(int) (this=0x7f9ed4000d24, barrier_tag=257) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/os/linux/waitBarrier_linux.cpp:69 #3 0x00007f9f141bf46a in WaitBarrierType::wait(int) (barrier_tag=, this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/utilities/waitBarrier.hpp:126 #4 0x00007f9f141bf46a in SafepointSynchronize::block(JavaThread*) (thread=0x7f9f0c088800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepoint.cpp:830 #5 0x00007f9f141c6065 in SafepointMechanism::block_or_handshake(JavaThread*) (thread=0x7f9f0c088800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:90 #6 0x00007f9f141c6065 in SafepointMechanism::block_if_requested_slow(JavaThread*) (thread=thread@entry=0x7f9f0c088800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.cpp:102 #7 0x00007f9f143ed238 in SafepointMechanism::block_if_requested(JavaThread*) (thread=0x7f9f0c088800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/safepointMechanism.inline.hpp:62 #8 0x00007f9f143ed238 in JavaThread::java_suspend_self_with_safepoint_check() (this=0x7f9f0c088800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:2571 #9 0x00007f9f143ed238 in JavaThread::java_suspend_self_with_safepoint_check() (this=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:2561 #10 0x00007f9f143ed238 in JavaThread::check_safepoint_and_suspend_for_native_trans(JavaThread*) (thread=0x7f9f0c088800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:2599 #11 0x00007f9f143ed238 in JavaThread::check_special_condition_for_native_trans(JavaThread*) (thread=0x7f9f0c088800) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/hotspot/share/runtime/thread.cpp:2615 #12 0x00007f9efc3d69e0 in () #13 0x00000007ff745568 in () #14 0x00007f9f0d460260 in () #15 0x00000007ff5914d4 in () #16 0x0000000100d1c488 in () #17 0x0000000800d1c488 in () #18 0x000000060e008778 in () #19 0x00000007ffca2f58 in () #20 0x0000000000000000 in () Thread 1 (Thread 0x7f9f148d3200 (LWP 6773)): #0 0x00007f9f14aa9a08 in __pthread_timedjoin_ex () at /lib64/libpthread.so.0 #1 0x00007f9f14acb16a in CallJavaMainInNewThread (stack_size=1048576, args=0x7ffc018b8bd0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/java.base/unix/native/libjli/java_md_solinux.c:756 #2 0x00007f9f14ac77ed in ContinueInNewThread (ifn=ifn@entry=0x7ffc018b8cd0, threadStackSize=, argc=, argv=0x7ad828, mode=mode@entry=2, what=0x7aca20 "/home/jkang/Work/code/src/github.com/jiekang/jmc/target/products/org.openjdk.jmc/linux/gtk/x86_64//plugins/org.eclipse.equinox.launcher_1.5.500.v20190715-1310.jar", what@entry=0x0, ret=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/java.base/share/native/libjli/java.c:2361 #3 0x00007f9f14acb20d in JVMInit (ifn=ifn@entry=0x7ffc018b8cd0, threadStackSize=, argc=, argv=, mode=mode@entry=2, what=0x0, what@entry=0x7aca20 "/home/jkang/Work/code/src/github.com/jiekang/jmc/target/products/org.openjdk.jmc/linux/gtk/x86_64//plugins/org.eclipse.equinox.launcher_1.5.500.v20190715-1310.jar", ret=) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/java.base/unix/native/libjli/java_md_solinux.c:793 #4 0x00007f9f14ac90e5 in JLI_Launch (argc=, argv=, jargc=, jargv=, appclassc=0, appclassv=0x0, fullversion=0x40205e "14-internal+0-adhoc.jkang.jdk", dotversion=0x40205a "0.0", pname=0x402055 "java", lname=0x40204d "openjdk", javaargs=0 '\000', cpwildcard=1 '\001', javaw=0 '\000', ergo=0) at /home/jkang/Work/code/src/hg.openjdk.java.net/jdk/jdk/src/java.base/share/native/libjli/java.c:344 #5 0x00000000004011f3 in main ()