Fixes are available
APAR status
Closed as program error.
Error description
There are 3-PCs each are started with 3-session as A,B,C (being varied OFF/ON every one minute) PCSCM.EXE crashed during user operation on SNA 3270 session. Pcomm is at 6.0.9 level and connectivity is LAN/LLC2. Applied fixes from PMR13985,999,760: APPN.sys PCSWS.exe PCSCM.exe pcstlnet.dll pcsruiss.dll pcsruisn.dll pcsruinw.dll operation: At PC1, start 4-session at 17:50 on 2014/05/27 session does not have any error till 07:00 on 2014/05/28 then stop all sessions then try to start a session, PCSCM.exe is crashed,
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All PCOM 3270 SNA LLC2 users with sessions * * running for a long period of time * **************************************************************** * PROBLEM DESCRIPTION: IBM Personal Communications 3270 SNA * * LLC2 session may crash while closing * * the session after a long run. * **************************************************************** * RECOMMENDATION: * **************************************************************** This problem is a regression of APAR IC80784. Closing the session may cause a crash due to access violation. There are two symptoms observed: 1. Crash because of an attempt to free a memory block which is already freed. 2. Free memory block chaining pointer becomes null. This APAR addresses symptom #1. A race condition betweeen session initiation/termination (the condition of IC80784) and process termination of pcsws.exe causes duplicate memory free.
Problem conclusion
PCSTQ.DLL module has been corrected not to free a memory block whose memory block header does not indicate allocated status. Fix scheduled for PCOM 6.0.12 Refresh Pack
Temporary fix
Comments
APAR Information
APAR number
IT04071
Reported component name
PCOMM V5 COMBO-
Reported component ID
5639I7000
Reported release
609
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2014-08-27
Closed date
2014-10-15
Last modified date
2014-10-15
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Modules/Macros
PCSTQ
Fix information
Fixed component name
PCOMM V5 COMBO-
Fixed component ID
5639I7000
Applicable component levels
R609 PSY
UP
[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSEQ5Y","label":"Personal Communications"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"609","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]
Document Information
Modified date:
15 October 2014