APAR status
Closed as program error.
Error description
Deadlock in these threads: "NotificationServiceDispatcher : 43" Blocked on: com/ibm/ws/logging/hpel/FormatSet Owned by: "WebContainer : 5" Java callstack: at com/ibm/ws/logging/hpel/FormatSet.returnFormatSet(FormatSet.java :106(Compiled Code)) (entered lock: com/ibm/ws/logging/hpel/FormatSet, entry count: 1) at com/ibm/ws/logging/TraceLogFormatter.formatTimeAndThread(TraceLo gFormatter.java:370(Compiled Code)) at com/ibm/ws/logging/TraceLogFormatter.formatHeaderBasic(TraceLogF ormatter.java:471(Compiled Code)) at com/ibm/ws/logging/TraceLogFormatter.formatBasic(TraceLogFormatt er.java:202(Compiled Code)) at com/ibm/ejs/ras/TraceLogger.doLog(TraceLogger.java:365(Compiled Code)) at com/ibm/ejs/ras/TraceLogger.processEvent(TraceLogger.java:354(Co mpiled Code)) at com/ibm/ws/logging/WsHandlerWrapper.publish(WsHandlerWrapper.jav a:48(Compiled Code)) ... "WebContainer : 5" Blocked on: org/apache/logging/log4j/core/appender/OutputStreamManager Owned by: "NotificationServiceDispatcher : 43" Java callstack: at org/apache/logging/log4j/core/appender/OutputStreamManager.write Bytes(OutputStreamManager.java:359(Compiled Code)) at org/apache/logging/log4j/core/layout/TextEncoderHelper.writeEnco dedText(TextEncoderHelper.java:96(Compiled Code)) at org/apache/logging/log4j/core/layout/TextEncoderHelper.encodeTex t(TextEncoderHelper.java:65(Compiled Code)) at org/apache/logging/log4j/core/layout/StringBuilderEncoder.encode (StringBuilderEncoder.java:68(Compiled Code)) at org/apache/logging/log4j/core/layout/StringBuilderEncoder.encode (StringBuilderEncoder.java:32(Compiled Code)) at org/apache/logging/log4j/core/layout/PatternLayout.encode(Patter nLayout.java:227(Compiled Code)) ...
Local fix
NA
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server * **************************************************************** * PROBLEM DESCRIPTION: Deadlock in logging code between * * OutputStreamManager and FormatSet * * objects. * **************************************************************** * RECOMMENDATION: * **************************************************************** When logging frameworks such as Log4j is configured and applications are logging messages and the WebSphere Application Server Logging framework tries to log a message, a deadlock might occur between the following NotificationServiceDispatcher and WebContainer threads: Thread Stack: "NotificationServiceDispatcher : 43" J9VMThread:, omrthread_t:, java/lang/Thread:, state:B, prio=5 Blocked on: com/ibm/ws/logging/hpel/FormatSet Owned by: "WebContainer : 5" Java callstack: at com/ibm/ws/logging/hpel/FormatSet.returnFormatSet(FormatSet.java :106(Compiled Code)) (entered lock: com/ibm/ws/logging/hpel/FormatSet, entry count: 1) at com/ibm/ws/logging/TraceLogFormatter.formatTimeAndThread(TraceLo gFormatter.java:370(Compiled Code)) at com/ibm/ws/logging/TraceLogFormatter.formatHeaderBasic(TraceLogF ormatter.java:471(Compiled Code)) at com/ibm/ws/logging/TraceLogFormatter.formatBasic(TraceLogFormatt er.java:202(Compiled Code)) at com/ibm/ejs/ras/TraceLogger.doLog(TraceLogger.java:365(Compiled Code)) at com/ibm/ejs/ras/TraceLogger.processEvent(TraceLogger.java:354(Co mpiled Code)) at com/ibm/ws/logging/WsHandlerWrapper.publish(WsHandlerWrapper.jav a:48(Compiled Code)) ... "WebContainer : 5", omrthread_t:, java/lang/Thread:, state:B, prio=5 Blocked on: org/apache/logging/log4j/core/appender/OutputStreamManager Owned by: "NotificationServiceDispatcher : 43" Java callstack: at org/apache/logging/log4j/core/appender/OutputStreamManager.write Bytes(OutputStreamManager.java:359(Compiled Code)) at org/apache/logging/log4j/core/layout/TextEncoderHelper.writeEnco dedText(TextEncoderHelper.java:96(Compiled Code)) at org/apache/logging/log4j/core/layout/TextEncoderHelper.encodeTex t(TextEncoderHelper.java:65(Compiled Code)) at org/apache/logging/log4j/core/layout/StringBuilderEncoder.encode (StringBuilderEncoder.java:68(Compiled Code)) at org/apache/logging/log4j/core/layout/StringBuilderEncoder.encode (StringBuilderEncoder.java:32(Compiled Code)) at org/apache/logging/log4j/core/layout/PatternLayout.encode(Patter nLayout.java:227(Compiled Code)) ...
Problem conclusion
The code was resolved to fix the deadlock. The fix for this APAR is targeted for inclusion in fix pack 8.5.5.21 and 9.0.5.10. For more information, see 'Recommended Updates for WebSphere Application Server': https://www.ibm.com/support/pages/node/715553
Temporary fix
Comments
APAR Information
APAR number
PH36354
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
2021-04-16
Closed date
2021-06-15
Last modified date
2021-09-09
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
WEBS APP SERV N
Fixed component ID
5724H8800
Applicable component levels
R850 PSY
UP
R900 PSY
UP
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.5","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
02 November 2021