IT28506: IN DB2 V11.1.4.4, A SEGMENTATION FAULT (CORE DUMPED) CAN OCCUR WHEN RUNNING DB2HAICU WITH AN XML INPUT FILE.

Db2 Version 11.1 Mod 4 Fix Pack 5 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• A segmentation fault (core dumped) can occur when running
  db2haicu with an XML input file, if quorum element is not as per
  the expected format,
  ie. <Quorum quorumDeviceProtocol=?<deviceprotocol>?
  quorumDeviceName=?<devicedetails>?/>
  
  
  Here is the sample stacktrace:
  
  (gdb) bt
  #0 0x00007f23fe40d477 in __strcasecmp_l_avx () from
  /lib64/libc.so.6
  #1 0x00000000005170d1 in
  SqlhaDocumentHandler::handleStartElement(char const*, char
  const*, char const*, XmlrpAttributes const&) ()
  #2 0x00007f24112884d6 in
  XmlrpDocumentHandlerAdapter::dhStartElement(unsigned int,
  unsigned short const*, unsigned short const*,
  xml4c_5_8::RefVectorOf<xml4c_5_8::XMLAttr> const&, unsigned int,
  xml4c_5_8::SchemaElementDecl const*, XmlrpElementPSVIAdapter*,
  bool) () from /home/db2eas/sqllib/lib64/libdb2xmrp.so.1
  #3 0x00007f241128734b in
  XmlrpDocumentHandlerAdapter::startElement(xml4c_5_8::XMLElementD
  ecl const&, unsigned int, unsigned short const*,
  xml4c_5_8::RefVectorOf<xml4c_5_8::XMLAttr> const&, unsigned int,
  bool, bool) () from /home/db2eas/sqllib/lib64/libdb2xmrp.so.1
  #4 0x00007f23fd66ba0d in
  xml4c_5_8::IGXMLScanner::scanStartTagNS(bool&) () from
  /home/db2eas/sqllib/lib64/libDB2xml4c.so.58
  #5 0x00007f23fd668d69 in xml4c_5_8::IGXMLScanner::scanContent()
  () from /home/db2eas/sqllib/lib64/libDB2xml4c.so.58
  #6 0x00007f23fd668ab8 in
  xml4c_5_8::IGXMLScanner::scanDocument(xml4c_5_8::InputSource
  const&) () from /home/db2eas/sqllib/lib64/libDB2xml4c.so.58
  #7 0x00007f2411293d25 in
  XmlrpParserScanner::scanDocument(XmlrpInputSource&) () from
  /home/db2eas/sqllib/lib64/libdb2xmrp.so.1
  #8 0x000000000050bf05 in sqlhaReadPolicyXMLFile(char const*,
  sqlhaPolicyXML*) ()
  #9 0x000000000050a791 in SqlhaLDM::buildFromXML(char*) ()
  #10 0x000000000042ce19 in main ()
  (gdb)
  

Local fix

• The expected format is :
  https://www.ibm.com/support/knowledgecenter/en/SSEPGG_11.1.0/com
  .ibm.db2.luw.admin.ha.doc/doc/r0052516.html
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * ALL                                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Db2 11.1.4.5                                      *
  ****************************************************************
  

Problem conclusion

• Upgrade to Db2 11.1.4.5
  

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:

  IT30783

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• RB10 PSN

     UP