Fixes are available
9.0.0.2: WebSphere Application Server traditional V9.0 Fix Pack 2
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
9.0.0.3: WebSphere Application Server traditional V9.0 Fix Pack 3
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
9.0.0.4: WebSphere Application Server traditional V9.0 Fix Pack 4
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
9.0.0.5: WebSphere Application Server traditional V9.0 Fix Pack 5
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
9.0.0.6: WebSphere Application Server traditional V9.0 Fix Pack 6
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
9.0.0.7: WebSphere Application Server traditional V9.0 Fix Pack 7
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
9.0.0.8: WebSphere Application Server traditional V9.0 Fix Pack 8
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
9.0.0.9: WebSphere Application Server traditional V9.0 Fix Pack 9
9.0.0.10: WebSphere Application Server traditional V9.0 Fix Pack 10
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
9.0.5.4: WebSphere Application Server traditional Version 9.0.5 Fix Pack 4
9.0.5.5: WebSphere Application Server traditional Version 9.0.5 Fix Pack 5
WebSphere Application Server traditional 9.0.5.6
9.0.5.7: WebSphere Application Server traditional Version 9.0.5 Fix Pack 7
9.0.5.8: WebSphere Application Server traditional Version 9.0.5.8
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
9.0.5.9: WebSphere Application Server traditional Version 9.0.5.9
9.0.5.10: WebSphere Application Server traditional Version 9.0.5.10
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21
9.0.5.11: WebSphere Application Server traditional Version 9.0.5.11
APAR status
Closed as program error.
Error description
Crash in lbll_node2obj when LB is garbage collecting memory from connection table. This issue is seen on many levels. The typical stack resembles: #1 0x8002f050 in lbll_selectn_nl at lb_linkedlist.c #2 0x800416c6 in _lbsel_ct_timer at lb_sel_connection.c #3 0x000382ac in lbport_timer_entry at lb_port.c #4 0x8000bede in lbclu_timer_entry at lb_cluster.c #5 0x80011164 in lbexe_timer_entry () at lb_executor.c #6 0x080010862 in lb_timer_entry () at lb_entry.c #7 0x0800028f6 in lx_timeout_pthread at lx_entry.c Key indicator are the functions in frames #2-#6; the top of the stack will typically be some lbll_* function (selectn_nl or node2obj). Frame #2 may also indicate _lbsel_at_timer instead of _lbsel_ct_timer.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: IBM WebSphere Application Server Edge Load * * Balancer for ipv4 and ipv6 users * **************************************************************** * PROBLEM DESCRIPTION: The application can crash with a * * callstack shown in the problem * * description. * **************************************************************** * RECOMMENDATION: * **************************************************************** The application can crash. The server.log will show errors trying to communicate with the executor.
Problem conclusion
Code has been corrected to prevent excessive looping which can corrupt the callstack and semaphore consistency to prevent concurrent data references. The fix for this APAR is currently targeted for inclusion in fix packs 7.0.0.42, 8.0.0.13, 8.5.5.11 and 9.0.0.2. Please refer to the Recommended Updates page for delivery information: http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Temporary fix
Comments
APAR Information
APAR number
PI66434
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-07-25
Closed date
2016-10-04
Last modified date
2016-10-04
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
WS EDGE LB IPV4
Fixed component ID
5724H8812
Applicable component levels
R800 PSY
UP
R850 PSY
UP
R900 PSY
UP
Document Information
Modified date:
04 May 2022