A fix is available
APAR status
Closed as program error.
Error description
Crash occurs during VRN link activation rejection caused by misconfigured DNS.
Local fix
Correct DNS configuration.
Problem summary
USERS AFFECTED: All using Enterprise Extender (EE). PROBLEM DESCRIPTION: CRASH INFORMATION:CPU 0 CSA F00000003005F780 at time of crash, error code for LEDs:70000000 pvthread+001700 STACK: [047C1E94]sna_v5router64:ncs_check_for_retry+000208 (F1000100653CA5D8,0100000000000001,F10001002F44E048) [047B5218]sna_v5router64:ncs_fsm_ls_ext+0005B0 (F10001003271AC20,F10001002F44E048) [047B2EA8]sna_v5router64:ncs_dlc_to_cs_signals+0001BC (F10001003271AC20,F10001002F44E048) [047B3B64]sna_v5router64:ncs_queue_handler+0000FC (F10001003271AC20,0001000000000001,F10001002F44E048) [046A6E70]sna_v5router64:nba_dispatch_input+000290 (F1000100321A8258,F10001002F44E048) [046A755C]sna_v5router64:nba_dispatch_process+0000C8 (F1000100321A8258,F10001002F44E048) [046A7D68]sna_v5router64:nba_scheduler+000210 () [04699F34]sna_v5router64:vpr_stream_lr_svc+0001A8 (F100020000522000) [0411207C]pse:sq_wrapper+00015C (??) [040FD358]pse:csq_run+000528 (??) [040FC008]pse:csq_lateral+0000BC (??, ??, ??) [041129F8]pse:scheduled_run+0000D0 () [001F6070]Netintr+0001A0 () [001F5E8C]netisr_thread+000014 () [0016BD2C]threadentry+000014 (??, ??, ??, ??) PROBLEM SUMMARY: The problem occurs when the following all occur: - DNS misconfiguration causes a VRN link activation to be rejected (CNCT_OUT RSP ERROR for @Dxxxxxx link in the DLC trace) - CS then frees internal memory used for this VRN link - CS frees memory back to the O/S from its memory cache (this does not happen every time) - the O/S memory manager clears this memory immediately. - CS then tries to access the memory just after it has been released.
Problem conclusion
Code has been corrected to prevent checking the retry logic for the dynamic link after it had failed to actviate.
Temporary fix
Comments
APAR Information
APAR number
IV40851
Reported component name
CS AIX V6.X
Reported component ID
5765E5100
Reported release
631
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-04-26
Closed date
2013-04-26
Last modified date
2013-09-18
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
CS AIX V6.X
Fixed component ID
5765E5100
Applicable component levels
R631 PSY U860529
13/09/18 I 1000
[{"Line of Business":{"code":"LOB35","label":"Mainframe SW"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSPQKF","label":"Communications Server for AIX"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"631"}]
Document Information
Modified date:
01 October 2021