APAR status
Closed as program error.
Error description
As with APAR PI79330, there are a few scenarios in IIB v10 where it is possible to abend as a result of errno EDEADLK for the iSessionRWLock when the Deploy Manager Cache attempts to delete a Session. The following error will be logged: +BIP2228E (Msg 1/1) <Broker>.agent 2993556746062004243 Severe error: /build/ib/S1000.s1/S1000P/src/CommonServices/Unix/ImbReadWriteL ock.cpp 256 pthread_rwlock_wrlock Abend file: <Broker_Home_Directory>/common/errors/<Broker>.agent.33816779. 2993556746062004243.abend action: abort An abend with the following call traceback stack will be generated: ImbAbend::logSystemErrorAndTerminateProcessInternal(const ch ImbReadWriteLock::writeLock() ImbReadWriteLockInterface::WriteLock::WriteLock(ImbReadWrite ImbDeployManagerCache::deleteSession(const ImbWstring&,bool) Java_com_ibm_broker_config_proxy_DMSessionManager_deregister RUNCALLINMETHOD gpProtectedRunCallInMethod signalProtectAndRunGlue j9sig_protect gpProtectAndRun gpCheckCallin callStaticVoidMethodV JNIEnv_::CallStaticVoidMethod(_jclass*,_jmethodID*,...) ImbDeployManagerCache::sendReplyMessage(ImbDeployManagerProx
Local fix
Problem summary
**************************************************************** USERS AFFECTED: All users of IBM Integration Bus v10. Platforms affected: z/OS, MultiPlatform **************************************************************** PROBLEM DESCRIPTION: In IIB v10, it is possible for the AdminAgent to abend when dealing with ImbDeployManagerProxySessions. An errno EDEADLK (a resource deadlock is avoided) is returned in an attempt to obtain the iSessionRWLock when the Deploy Manager Cache attempts to delete a Session. The following error will be logged: +BIP2228E (Msg 1/1) <Broker>.agent 2993556746062004243 Severe error: /build/ib/S1000.s1/S1000P/src/CommonServices/Unix/ImbReadWriteLo ck.cpp 256 pthread_rwlock_wrlock Abend file: <Broker_Home_Directory>/common/errors/<Broker>.agent.33816779. 2993556746062004243.abend action: abort A previous APAR, PI79330, resolved this issue for the ImbDeployManagerCache::sessionListMaintenance() function, but there are three other functions that might also result in this deadlock. An abend with the following call traceback stack will be generated: ImbAbend::logSystemErrorAndTerminateProcessInternal(const ch ImbReadWriteLock::writeLock() ImbReadWriteLockInterface::WriteLock::WriteLock(ImbReadWrite ImbDeployManagerCache::deleteSession(const ImbWstring&,bool) Java_com_ibm_broker_config_proxy_DMSessionManager_deregister RUNCALLINMETHOD gpProtectedRunCallInMethod signalProtectAndRunGlue j9sig_protect gpProtectAndRun gpCheckCallin callStaticVoidMethodV JNIEnv_::CallStaticVoidMethod(_jclass*,_jmethodID*,...) ImbDeployManagerCache::sendReplyMessage(ImbDeployManagerProx --- The call prior to sendReplyMessage on the stack can be either of the following --- <ImbDeployManagerCache::sessionListMaintenance()> <ImbDeployManagerCache::notifyProxiesOfDelete> <ImbDeployManagerCache::notifySpecificProxiesOfLogUpdates> <ImbDeployManagerCache::notifyProxies>
Problem conclusion
The product has been modified to resolve the root cause of these abends. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v10.0 10.0.0.12 The latest available maintenance can be obtained from: http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041 If the maintenance level is not yet available,information on its planned availability can be found on: http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
PI87719
Reported component name
IIB Z/OS
Reported component ID
5655AB100
Reported release
A00
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-09-21
Closed date
2018-03-21
Last modified date
2018-03-21
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
IIB Z/OS
Fixed component ID
5655AB100
Applicable component levels
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSNQH8","label":"IBM Integration Bus for z\/OS"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"10.0","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"10.0","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
21 March 2018