IV53347: INCOMPLETE ENTITY AGENT DATA CAN CAUSE A CORE DUMP IN THE AGENT AND IMPACT ON THE COMPLETION OF DISCOVERY.

IBM Tivoli Network Manager IP 3.9.0 Fix Pack 4, 3.9.0-TIV-ITNMIP-FP0004
IBM Tivoli Network Manager IP Edition 3.9.0 Fix Pack 5, 3.9.0-TIV-ITNMIP-FP0005

APAR status

• Closed as program error.

Error description

• Product: Tivoli Network Manager
  Version: 3.9
  Component:  Entity Agent
  
  
  Symptoms:  The Entity Agent exits unexpectedly and writes a core
  file into $NCHOME/precision/PD/core/ncp_agent
  
  Stacktrace on the core file includes similar results to this:
  
  #10 0x00227bec in CDiscoEntityAgent::ResolveInterfaces
  (this=0x95d54a0, neRecord=0xf71004e0, neMedData=0xf6e00488,
  entityDataByPhysIndex=@0x93de0b4)
      at CDiscoEntityAgent.cc:1279
  
  Full stacktrace was
  #0  0x007be430 in __kernel_vsyscall ()
  #1  0x007e9b01 in ?? ()
  #2  0x007eb3da in ?? ()
  #3  0x0052db87 in ?? () from /usr/lib/libstdc++.so.6
  #4  0x0052b9e6 in
  std::__timepunct<char>::_M_initialize_timepunct(__locale_struct*
  ) () from /usr/lib/libstdc++.so.6
  #5  0x0052ba23 in
  std::__timepunct<char>::_M_initialize_timepunct(__locale_struct*
  ) () from /usr/lib/libstdc++.so.6
  #6  0x0052bb62 in
  std::__timepunct<char>::_M_initialize_timepunct(__locale_struct*
  ) () from /usr/lib/libstdc++.so.6
  #7  0x004cc200 in std::locale::_Impl::_Impl(char const*,
  unsigned int) () from /usr/lib/libstdc++.so.6
  #8  0x00509be2 in std::string::_S_construct(unsigned int, char,
  std::allocator<char> const&) () from /usr/lib/libstdc++.so.6
  #9  0x00509cf6 in std::basic_string<char,
  std::char_traits<char>, std::allocator<char>
  >::basic_string(std::allocator<char> const&) () from
  /usr/lib/libstdc++.so.6
  #10 0x00227bec in CDiscoEntityAgent::ResolveInterfaces
  (this=0x95d54a0, neRecord=0xf71004e0, neMedData=0xf6e00488,
  entityDataByPhysIndex=@0x93de0b4)
      at CDiscoEntityAgent.cc:1279
  #11 0x0022ac81 in CDiscoEntityAgent::ProcessEntityData
  (this=0x95d54a0, neRecord=0xf71004e0, neMedData=0xf6e00488) at
  CDiscoEntityAgent.cc:415
  #12 0x0022be8a in CDiscoEntityAgent::DADoProcessLayer
  (this=0x95d54a0, neRecord=0xf71004e0) at
  CDiscoEntityAgent.cc:333
  #13 0x001bf178 in CDiscoAgent::DAProcessLayer (this=0x95d54a0,
  neRecord=0xf71004e0) at CDiscoAgent.cc:1553
  #14 0x001bf1dc in CDiscoAgent::DADoPhasedNeProcessing
  (this=0x95d54a0, neRecord=0xf71004e0) at CDiscoAgent.cc:6048
  #15 0x001bf276 in CDiscoAgent::DAProcessNe (this=0x95d54a0,
  neRecord=0xf71004e0) at CDiscoAgent.cc:1040
  #16 0x001c075d in CDiscoAgent::DAProcessNewNe (this=0x95d54a0,
  neRecord=0xf71004e0) at CDiscoAgent.cc:909
  #17 0x001ebb20 in newNeThreadFn (work=0xf71004e0,
  closure=0x95d54a0) at DiscoAgentNewNeThreadFn.cc:54
  #18 0x00b5d5df in CRivServPool::MainWorkLoop (this=0x95f4b50) at
  CRivServPool.cc:360
  #19 0x00b5cbd9 in CRivServPool::ThreadStartFunction
  (arg=0x95f4b50) at CRivServPool.cc:281
  #20 0x006dda49 in pthread_getschedparam () from
  /lib/libpthread.so.0
  #21 0x0089de1e in ?? () from /lib/libc.so.6
  
  Agent Trace file ends:
  
  Time: 1386228092 DHRGetAnswer(): Send REQ KEY:1386228092.377
  dest: a.b.c.d
  DHRGetAnswer Waiting for answer.
  Time: 1386228092 Received REQ KEY: 1386228083.351
  Time: 1386228092 Finished REQ KEY:1386228083.351
  ::DAUFStoreSnmpDLinTLByIndex(), NULL data source or destination
  ::DAUFStoreSnmpDLinTLByValue(), NULL data source or destination
  terminate called after throwing an instance of
  'std::logic_error'
    what():  basic_string::_S_construct NULL not valid
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All platform                                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Core dump happened when enable Entity Agent in discovery.    *
  * It's triggered by incomplete data downloaded being           *
  * downloaded which later causes core dump when Entity Agent    *
  * try to process it.                                           *
  *                                                              *
  * Core message will be similar to below:                       *
  * 0x00227bec in CDiscoEntityAgent::ResolveInterfaces           *
  * (this=0x95d54a0, neRecord=0xf71004e0, neMedData=0xf6e00488,  *
  * entityDataByPhysIndex=@0x93de0b4)                            *
  *     at CDiscoEntityAgent.cc:1279                             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * The fix for this APAR is contained in the following          *
  * maintenance packages:                                        *
  * |fix pack | 3.9.0-ITNMIP-FP0004|                             *
  ****************************************************************
  

Problem conclusion

• Fix the broken function to avoid core dump
  

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

  TIV NETWK MGR I

• Fixed component ID

  5724S4500

Applicable component levels

• R390 PSY

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