PQ37976: CEE5207E THE SIGNAL SIGABRT WAS RECEIVED WITH ABEND 4039 WHEN THE WEBESRVER CATCHES A SIGNAL THAT WAS NOT ONE IT RAISED.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• If the webserver catches a signal that was not one that it
  raised then the webserver will abend with a U4039 and message
  CEE5207E The signal SIGABRT was received.  This is because
  the webserver cannot establish addressability to the tprivate
  area because a null is passed by the improper signal and no
  valid address exists.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users.                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABEND0C4 occurs in the webserver.       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The web server's SIGUSR1 signal handler received control on a
  non-web server worker thread causing it to attempt to obtain
  addressing to thread specific structures that do not exist.
  Leading to an ABEND0C4.
  

Problem conclusion

• sig_usr1, the webserver's SIGUSR1 signal handler needs to
  verify that it is a worker thread or not, and if not to exit
  after writing an ErrorLog entry.  After the pthread_getspecific
  to obtain the t_private, the t_private it needs to be checked
  for NULL.
  New message:
   IMW0554E SIGUSR1 caught on non-server thread.
  
  Explanation: A SIGUSR1 was propagated to the web server's signal
  handler on a non-server worker thread. This signal was sent by
  code other than the web server.
  
  User Response: May need to determine who sent the SIGUSR1 and
  why it was not handled by their signal handler.
  
  For the latest documentation for the 5.0 release, please use
  one of the following URL:
  http://www.ibm.com/software/websphere/dgw/doc50.htm
  
  The following COMPID's are affected by these changes:
  
  5697D4300 LDGW for OS/390  Version 5 Release 0 (only)
  
  The code changes are stored in CMVC under defect PQ37976.
  
  
  * Cross Reference between External and Internal Names
  

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:

  UQ43341 UQ43342 UQ43343 UQ43344 UQ43345

Modules/Macros

• IMWCACHE IMWFCGI  IMWGSKIP IMWHTTPD IMWJAVDL
  IMWJGIW  IMWMCATE IMWMCAT1 IMWOCFGT IMWOCGPR IMWOCGTL IMWOHTAP
  IMWOHTDM IMWOPICO IMWSCONT IMWXAPIC IMWYWWEX IMWYWWFR IMWYWWUS
  

Fix information

• Fixed component name

  DGW/WAS OS/390

• Fixed component ID

  5697D4300

Applicable component levels

• R50A PSY UQ43341

     UP00/06/09 P F006

• R50B PSY UQ43342

     UP00/06/09 P F006

• R500 PSY UQ43340

     UP00/06/08 P F006

• R501 PSY UQ43343

     UP00/06/09 P F006

• R502 PSY UQ43344

     UP00/06/09 P F006

• R503 PSY UQ43345

     UP00/06/09 P F006

Fix is available

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