A fix is available
APAR status
Closed as program error.
Error description
Communications Server for AIX ----------------------------- Crash in sna_mux.
Local fix
Problem summary
USERS AFFECTED: All using the back-level LU6.2 APIs. PROBLEM DESCRIPTION: Dump stack: CPU 0 CSA F000000030033600 at time of crash, error code for LEDs: 30000000 pvthread+002300 STACK: ___memmove64+000024 () sna_mux64:vba_buf_to_mblk_copy+000164 (F1000E0004615D00, 000000C8000000C8, F1000E0006B1C11C, 0000000800000008) sna_mux64:tps_parsed_ltv+000204 (0008000000000008, 0003000000000003, F1000E0006B1C11C, 0F00023A0F00023A) sna_mux64:tps_parse_ltv+0000D4 (F1000E0006B1C11C, 0000006000000060, F1000000C078E090, 0F00023A0F00023A) sna_mux64:tps_rcv_query_dload_rsp+000234 (F1000E0006B1C100) sna_mux64:tps_receive_proc+0000EC (0000000000000000, 0FFFFFFFF007F9A0, F1000000C06E5B58) sna_ddpmgr64:sna_p_vpm_rcv_datagram+000180 (F1000E0006C301D8, F1000E0006B1C100, 0FFFFFFFF007FA60) sna_ddpmgr64:vpm_rcv_msg+0000C8 (F1000E0006C30100) sna_ddpmgr64:sna_p_vpm_stream_r_svc+00002C (F1000E000425DC00) pse:sq_wrapper+000134 (??)pse:csq_run+00029C (??) pse:csq_lateral+00036C (??, ??, ??) pse:scheduled_run+000100 () .hkey_legacy_gate+00004C () Netintr+0002F8 () netisr_thread+000020 () threadentry+000094 (??, ??, ??, ??) PROBLEM SUMMARY: The crash occurs when loading a back level LU 6.2 application. The problem is introduced by a previous fix (LI75513) which was included, though not listed, in the 6.4.0.2 level. The TP Server code is shared between the user space TP Server daemon and APPC libraries and the kernel space back-level LU 6.2 code. The fix was not correct for the kernel code where a message was used twice. In most cases thise was harmless, but when an unitialized field matched a control block index, we tried to release a streams message before we had finished using it, and hence caused the crash.
Problem conclusion
Code has been maltered to apply the previous fix to only the user space code, because there is no need for the extra error checking in the kernel space back-level code.
Temporary fix
sna_mux64
Comments
APAR Information
APAR number
IV10868
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
2011-11-17
Closed date
2011-11-17
Last modified date
2011-11-18
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 U848721
11/11/18 I 1000
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSPQKF","label":"Communications Server for AIX"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"631","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]
Document Information
Modified date:
18 November 2011