PH64677: After PH48747, the web server can't start due to damaged heap storage when config parsing fails.

APAR status

• Closed as program error.

Error description

• After PH48747, the web server is experiencing difficulties in
  starting due to a corrupted heap storage file, which occurs
  when the configuration parser encounters an error. The
  following error message is logged in the system:
  
  CEE0802C Heap storage control information was damaged.
  From compile unit
  AQMVSOE:/u/bbuild8/blddir/WAS90.ZNATV/ZNATV/ws/code
  plugins.http/src/apache_24/common/ws_config_parser.c at entry
  point handlePropertyStart at statement 2130 at compile unit
  offset +000000002A465C46 at entry offset +000000000000039E at
  address 000000002A465C46.
  
  This problem was first discovered on z/OS, but it also affects other operating systems. 
  Other operating systems may also encounter web server startup failures but without displaying the "Heap storage control information was damaged" error seen in z/OS.
  
  Example stack trace of httpd on a Linux machine:
  
  Stack trace of thread 5259:
  #0  0x00007fbe8168bedc __pthread_kill_implementation (libc.so.6 + 0x8bedc)
  #1  0x00007fbe8163eb46 raise (libc.so.6 + 0x3eb46)
  #2  0x00007fbe81628833 abort (libc.so.6 + 0x28833)
  #3  0x00007fbe81629172 __libc_message.cold (libc.so.6 + 0x29172)
  #4  0x00007fbe81695f87 malloc_printerr (libc.so.6 + 0x95f87)
  #5  0x00007fbe816991fc _int_malloc (libc.so.6 + 0x991fc)
  #6  0x00007fbe8169aa6e __libc_calloc (libc.so.6 + 0x9aa6e)
  #7  0x00007fbe8001ea53 serverCreate (mod_was_ap22_http.so + 0x56a53)
  #8  0x00007fbe8001062e handleServerStart (mod_was_ap22_http.so + 0x4862e)
  #9  0x00007fbe8000e849 handleStartElement (mod_was_ap22_http.so + 0x46849)
  #10 0x00007fbe800328e4 sxpParse (mod_was_ap22_http.so + 0x6a8e4)
  #11 0x00007fbe8000d910 configParserParse (mod_was_ap22_http.so + 0x45910)
  #12 0x00007fbe800015bc websphereUpdateConfig (mod_was_ap22_http.so + 0x395bc)
  #13 0x00007fbe800020b8 websphereInit (mod_was_ap22_http.so + 0x3a0b8)
  #14 0x00007fbe7ffe7467 as_post_config (mod_was_ap22_http.so + 0x1f467)
  #15 0x000000000043bc6c ap_run_post_config (httpd + 0x3bc6c)
  #16 0x0000000000422891 main (httpd + 0x22891)
  #17 0x00007fbe816295d0 __libc_start_call_main (libc.so.6 + 0x295d0)
  #18 0x00007fbe81629680 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x29680)
  #19 0x0000000000421ba9 _start (httpd + 0x21ba9)
  

Local fix

• Rename the merged plugin-cfg.xml file to something like
  plugin-cfg-x.xml, or move the merged plugin file to a different
  directory.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  Users of Plugins for WebServers             *
  *                  experiencing                                *
  *                  startup issues due to a corrupted heap      *
  *                  storage                                     *
  *                  file in a fix pack that includes PH48747    *
  ****************************************************************
  * PROBLEM DESCRIPTION: A web server startup failure caused by  *
  *                      a                                       *
  *                      corrupted heap storage.                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A web server startup failure caused by a corrupted heap storage.
  

Problem conclusion

• The code has been updated to eliminate the problematic variable,
  ensuring that the startup process proceeds without causing
  corruption to the heap storage file.
  
  The fix for this APAR is targeted for inclusion in fix packs
  8.5.5.28 and 9.0.5.24.
  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

  WEBSPHERE FOR Z, WAS Network Deployment

• Fixed component ID

  5655I3500, 5724H8800

Applicable component levels