PH53159: Deadlock seen in WASResourceSetImpl

APAR status

• Closed as program error.

Error description

• Deadlock seen in WASResourceSetImpl.java, javacore stack shown
  below:
  3XMTHREADINFO      "WebContainer : 4"
  J9VMThread:0x0000000003BAF200, omrthread_t:0x00002B6EB402E158,
  java/lang/Thread:0x00000000C76C4A38, state:B, prio=5
  3XMJAVALTHREAD            (java/lang/Thread getId:0x247,
  isDaemon:true)
  3XMJAVALTHRCCL
  com/ibm/ws/bootstrap/ExtClassLoader(0x00000000607A2150)
  3XMTHREADINFO1            (native thread ID:0x66BE, native
  priority:0x5, native policy:UNKNOWN, vmstate:B, vm thread
  flags:0x00000281)
  3XMTHREADINFO2            (native stack address range
  from:0x00002B6E19FD1000, to:0x00002B6E1A011000, size:0x40000)
  3XMCPUTIME               CPU usage total: 1245.187663288 secs,
  current category="Application"
  3XMTHREADBLOCK     Blocked on:
  com/ibm/ws/sm/workspace/migration/WSResourceSetImpl@0x00000000C7
  FC5EB8 Owned by: "WebContainer : 1"
  (J9VMThread:0x0000000003C8AC00,
  java/lang/Thread:0x00000000C7767968)
  3XMHEAPALLOC             Heap bytes allocated since last GC
  cycle=0 (0x0)
  3XMTHREADINFO3           Java callstack:
  4XESTACKTRACE                at
  com/ibm/websphere/resource/WASResourceSetImpl.getResource(WASRes
  ourceSetImpl.java:320(Compiled Code))
  5XESTACKTRACE                   (entered lock:
  com/ibm/ws/sm/workspace/migration/WSResourceSetImpl@0x00000000C7
  FC5EB8, entry count: 1)
  4XESTACKTRACE                at
  com/ibm/ws/sm/workspace/migration/WSResourceSetImpl.getResource(
  WSResourceSetImpl.java:154(Compiled Code))
  4XESTACKTRACE                at
  com/ibm/ws/management/configservice/WorkspaceHelper.getDocAccess
  orInternal(WorkspaceHelper.java:230(Compiled Code))
  4XESTACKTRACE                at
  com/ibm/ws/management/configservice/WorkspaceHelper.getDocAccess
  or(WorkspaceHelper.java:213(Compiled Code))
  4XESTACKTRACE                at
  com/ibm/ws/management/configservice/WorkspaceHelper.getDocAccess
  or(WorkspaceHelper.java:200(Compiled Code))
  4XESTACKTRACE                at
  com/ibm/ws/management/configservice/WorkspaceHelper.getDocAccess
  or(WorkspaceHelper.java:309(Compiled Code))
  4XESTACKTRACE                at
  com/ibm/ws/management/configservice/MOFUtil.convertToEObject(MOF
  Util.java:165(Compiled Code))
  4XESTACKTRACE                at
  com/ibm/ws/management/configservice/ConfigServiceImpl.checkAcces
  s(ConfigServiceImpl.java:2916(Compiled Code))
  4XESTACKTRACE                at
  com/ibm/ws/management/configservice/ConfigServiceImpl.queryConfi
  gObjects(ConfigServiceImpl.java:977(Compiled Code))
  4XESTACKTRACE                at
  com/ibm/ws/management/configservice/EndpointConfigHelper.getThis
  HostIP(EndpointConfigHelper.java:1880)
  4XESTACKTRACE                at
  com/ibm/ws/management/configservice/EndpointConfigHelper.adjustP
  ort(EndpointConfigHelper.java:1458)
  4XESTACKTRACE                at
  com/ibm/ws/management/configservice/EndpointConfigHelper.createS
  erverEntry(EndpointConfigHelper.java:845)
  5XESTACKTRACE                   (entered lock:
  com/ibm/ws/sm/workspace/migration/WSResourceImpl@0x00000000947C6
  AA0, entry count: 1)
  4XESTACKTRACE                at
  com/ibm/ws/management/configservice/BaseServerDelegator.createCo
  nfigObject(BaseServerDelegator.java:92)
  4XESTACKTRACE                at
  com/ibm/ws/management/configservice/ServerDelegator.createBasicC
  onfigObject(ServerDelegator.java:248)
  4XESTACKTRACE                at
  com/ibm/ws/management/commands/server/ServerConfigHelper.createS
  erver(ServerConfigHelper.java:639)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  *                  version 8.5.5 or later                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Deadlock seen in WASResourceSetImpl     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Deadlock seen in WASResourceSetImpl.java,
  

Problem conclusion

• The code is modified to avoid deadlock in WASResourceSetImpl.
  
  The fix for this APAR is targeted for inclusion in fix pack
  8.5.5.24 and 9.0.5.16. For more information, see 'Recommended
  Updates for WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels