IV74481: JVM MAY CRASH WHEN JVMTI CONTENDED MONITOR EVENTS ENABLED

APAR status

• Closed as program error.

Error description

• Error Message: JVM crashes when JVMTI events
  MonitorContendedEnter or MonitorContendedEntered are enabled.
  .
  Stack Trace: 3XMTHREADINFO3           Java callstack:
  4XESTACKTRACE                at
  java/lang/Throwable.fillInStackTrace(Native Method)
  4XESTACKTRACE                at
  java/lang/Throwable.<init>(Throwable.java:67)
  4XESTACKTRACE                at
  java/lang/Throwable.<init>(Throwable.java:78)
  4XESTACKTRACE                at
  java/lang/Exception.<init>(Exception.java:78)
  4XESTACKTRACE                at
  java/lang/RuntimeException.<init>(RuntimeException.java:74)
  4XESTACKTRACE                at
  java/lang/NullPointerException.<init>(NullPointerException.java:
  82)
  4XESTACKTRACE                at
  java/util/concurrent/locks/AbstractQueuedSynchronizer.release(Ab
  stractQueuedSynchronizer.java:1272(Compiled Code))
  4XESTACKTRACE                at
  java/util/concurrent/ThreadPoolExecutor$Worker.unlock(ThreadPool
  Executor.java:655)
  4XESTACKTRACE                at
  java/util/concurrent/ThreadPoolExecutor.runWorker(ThreadPoolExec
  utor.java:1170)
  1INTERNAL                    Unable to walk in-flight data on
  call stack
  3XMTHREADINFO3           Native callstack:
  4XENATIVESTACK               (0x00007F969F0B9AA2
  <OSB>libj9prt26.so+0x13aa2<CSB>)
  4XENATIVESTACK               (0x00007F969F0C7D7F
  <OSB>libj9prt26.so+0x21d7f<CSB>)
  4XENATIVESTACK               (0x00007F969F0B97EB
  <OSB>libj9prt26.so+0x137eb<CSB>)
  4XENATIVESTACK               (0x00007F969F0B98E7
  <OSB>libj9prt26.so+0x138e7<CSB>)
  4XENATIVESTACK               (0x00007F969F0C7D7F
  <OSB>libj9prt26.so+0x21d7f<CSB>)
  4XENATIVESTACK               (0x00007F969F0B940B
  <OSB>libj9prt26.so+0x1340b<CSB>)
  4XENATIVESTACK               (0x00007F969F0B2749
  <OSB>libj9prt26.so+0xc749<CSB>)
  4XENATIVESTACK               (0x00007F969F0B411D
  <OSB>libj9prt26.so+0xe11d<CSB>)
  4XENATIVESTACK               (0x00007F969F0C7D7F
  <OSB>libj9prt26.so+0x21d7f<CSB>)
  4XENATIVESTACK               (0x00007F969E71E833
  <OSB>libj9dmp26.so+0x16833<CSB>)
  4XENATIVESTACK               (0x00007F969E71F08D
  <OSB>libj9dmp26.so+0x1708d<CSB>)
  4XENATIVESTACK               (0x00007F969F0C7D7F
  <OSB>libj9prt26.so+0x21d7f<CSB>)
  4XENATIVESTACK               (0x00007F969E71950F
  <OSB>libj9dmp26.so+0x1150f<CSB>)
  4XENATIVESTACK               (0x00007F969E7181AA
  <OSB>libj9dmp26.so+0x101aa<CSB>)
  4XENATIVESTACK               (0x00007F969F0C7D7F
  <OSB>libj9prt26.so+0x21d7f<CSB>)
  4XENATIVESTACK               (0x00007F969E7203ED
  <OSB>libj9dmp26.so+0x183ed<CSB>)
  4XENATIVESTACK               (0x00007F969E720749
  <OSB>libj9dmp26.so+0x18749<CSB>)
  4XENATIVESTACK               (0x00007F969E70DDB8
  <OSB>libj9dmp26.so+0x5db8<CSB>)
  4XENATIVESTACK               (0x00007F969F0C7D7F
  <OSB>libj9prt26.so+0x21d7f<CSB>)
  4XENATIVESTACK               (0x00007F969E70C568
  <OSB>libj9dmp26.so+0x4568<CSB>)
  4XENATIVESTACK               (0x00007F969E710CC8
  <OSB>libj9dmp26.so+0x8cc8<CSB>)
  4XENATIVESTACK               (0x00007F969E722912
  <OSB>libj9dmp26.so+0x1a912<CSB>)
  4XENATIVESTACK               (0x00007F969F42B2C9
  <OSB>libj9vm26.so+0x1b2c9<CSB>)
  4XENATIVESTACK               (0x00007F969F0C7D7F
  <OSB>libj9prt26.so+0x21d7f<CSB>)
  4XENATIVESTACK               (0x00007F969F42B4E6
  <OSB>libj9vm26.so+0x1b4e6<CSB>)
  4XENATIVESTACK               (0x00007F969F42BD51
  <OSB>libj9vm26.so+0x1bd51<CSB>)
  4XENATIVESTACK               (0x00007F969F0C75CF
  <OSB>libj9prt26.so+0x215cf<CSB>)
  4XENATIVESTACK               (0x00007F96A0AD4340
  <OSB>libpthread.so.0+0x10340<CSB>)
  4XENATIVESTACK               (0x00007F969F482C2C
  <OSB>libj9vm26.so+0x72c2c<CSB>)
  4XENATIVESTACK               (0x00007F969F482D60
  <OSB>libj9vm26.so+0x72d60<CSB>)
  4XENATIVESTACK               (0x00007F969F472766
  <OSB>libj9vm26.so+0x62766<CSB>)
  4XENATIVESTACK
  java_lang_Throwable_fillInStackTrace+0x12c (0x00007F969C9D8BE4
  <OSB>libjclse7b_26.so+0x34be4<CSB>)
  .
  

Local fix

Problem summary

• The JVM was not correctly handling a grow of the java stack
  during the reporting of the contended monitor events.
  

Problem conclusion

• The JVM has been updated to handle the stack grow during the
  events.
  .
  This APAR will be fixed in the following Java Releases:
     7    SR9 FP 10 (7.0.9.10)
     7 R1 SR3 FP10  (7.1.3.10)
     6 R1 SR8 FP7   (6.1.8.7)
     6    SR16 FP7  (6.0.16.7)
     8    SR1 FP10  (8.0.1.10)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
             https://www.ibm.com/developerworks/java/jdk/
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels

• R260 PSY

     UP

• R270 PSY

     UP

• R600 PSY

     UP