Closed as program error.
Error Message: N/A . Stack Trace: jdwp thread: 0:006> kp ChildEBP RetAddr 0920fc18 7c90e9c0 ntdll!KiFastSystemCallRet 0920fc1c 7c8025db ntdll!ZwWaitForSingleObject+0xc 0920fc80 7c802542 kernel32!WaitForSingleObjectEx+0xa8 0920fc94 7f0a1efa kernel32!WaitForSingleObject+0x12 0920fcac 7f0a2c1a j9thr23!monitor_enter_three_tier(struct J9Thread * self = 0x00000000, struct J9ThreadMonitor * monitor = 0x00000023)+0x9a 0920fcb8 7f110a76 j9thr23!j9thread_monitor_enter(struct J9ThreadMonitor * monitor = 0x10ce9048)+0x3a 0920fccc 7ee7d567 j9jvmti23!jvmtiRawMonitorEnter(struct JVMTINativeInterface_ ** env = 0x10ce9048, struct _jrawMonitorID * monitor = 0x10ce904c)+0x96 WARNING: Stack unwind information not available. Following frames may be wrong. 0920fce0 7ee79737 jdwp!Agent_OnUnload+0x1c2dd 00000000 00000000 jdwp!Agent_OnUnload+0x184ad Class loading thread: 0:079> kp ChildEBP RetAddr 0cd7f474 7c90e9c0 ntdll!KiFastSystemCallRet 0cd7f478 7c8025db ntdll!ZwWaitForSingleObject+0xc 0cd7f4dc 7c802542 kernel32!WaitForSingleObjectEx+0xa8 0cd7f4f0 7f0a22d0 kernel32!WaitForSingleObject+0x12 0cd7f528 7f0a2ce2 j9thr23!monitor_wait(struct J9ThreadMonitor * monitor = 0x4affc033, int64 millis = -4490119718996728, int nanos = 58524746, int interruptable = 1375732930)+0x210 0cd7f540 7f051ead j9thr23!j9thread_monitor_wait(struct J9ThreadMonitor * monitor = 0x7f03014b)+0x12 0cd7f550 7f051eef j9vm23!internalAcquireVMAccessNoMutexWithMask(struct J9VMThread * vmThread = 0x7f03014b, unsigned int haltMask = 0xd57af00)+0x1d 0cd7f55c 7f021047 j9vm23!internalAcquireVMAccessNoMutex(struct J9VMThread * vmThread = 0x7f03014b)+0xf 0cd7f5ac 7f03014b j9vm23!internalAcquireVMAccess(void)+0x47 0cd7f60c 7ee7dbec j9vm23!isSameObject(void)+0x8b WARNING: Stack unwind information not available. Following frames may be wrong. 0cd7f620 7ee784da jdwp!Agent_OnUnload+0x1c962 0cd7f634 7ee797db jdwp!Agent_OnUnload+0x17250 0cd7f63c 7ee79c38 jdwp!Agent_OnUnload+0x18551 0cd7f644 7ee7af24 jdwp!Agent_OnUnload+0x189ae 0cd7f670 7ee704c2 jdwp!Agent_OnUnload+0x19c9a 00000000 00000000 jdwp!Agent_OnUnload+0xf238 . N/A
Application hangs while one of its thread(jdwp) is trying to acquire a monitor lock which is held by another thread(Class loader in this case). Since the class loading thread is found to be in suspended state, the thread cannot release the lock until it resumes. It's not just the loader that is suspended and all other threads except the few jdwp threads are found to be in suspended state. This explains that the jdwp thread has suspended all the threads and trying to acquire a lock before resuming the threads. Since the monitor lock being requested is held by a suspended thread, this goes to a deadlock kind of situation that cannot be recovered until the lock is released by the loader thread.
This defect will be fixed in: 5.0.0 SR13 . JVM has been updated to overcome this deadlock situation that happens with the JDWP thread. . To obtain the fix: Install build 20101015 or later
Reported component name
JAVA 5 J9 COMMO
Reported component ID
Last modified date
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fixed component name
JAVA 5 J9 COMMO
Fixed component ID
Applicable component levels
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