A fix is available
APAR status
Closed as program error.
Error description
System can crash with the following stack trace, when system is performing DMA operations on mmapped address/buffers:- CPU 1 CSA F00000002FF47600 at time of crash, error code for LEDs: 70000000 pvthread+01C900 STACK: [000EBD90]xmemdma64_list+000430 (800000281BE00001, F1000A08058A3090, 000000003048B000, 000000000000000E, 000000000082FD97, 000000000000048C [??]) [041ABF1C]d_map_list_tce+0014DC (??, ??, ??, ??, ??) [042A5B3C]efc_mapdma_iocb+0006BC (??, ??) [042AAFA8]efc_start+000508 (??) [042ABD0C]efc_output+00066C (??, ??) [04344BF8]efsc_start+000938 (??, ??) [04348B9C]efsc_strategy+00101C (??) [042F9DB0]efsc_sciocmd+000EB0 (??, ??, ??, ??) [04302E8C]efsc_ioctl+00062C (??, ??, ??, ??, ??, ??) [0056FFC0]rdevioctl+0000C0 (??, ??, ??, ??, ??, ??) [00747E60]spec_ioctl+000080 (??, ??, ??, ??, ??, ??) [0059FFF0]vnop_ioctl+000050 (??, ??, ??, ??, ??, ??) [005B597C]vno_ioctl+00009C (??, ??, ??, ??, ??) [0068A5D8]common_ioctl+0000F8 (??, ??, ??, ??) [00003850]ovlya_addr_sc_flih_main+000130 () [kdb_get_virtual_memory] no real storage @ 2FF219B8 [D0130EF4]D0130EF4 ()
Local fix
Problem summary
System crash with a stack that includes: 000EBD90 xmemdma64_list+000430 (... 041ABF1C d_map_list_tce+0014DC (... This problem exists only on machines with 2GB or less memory.
Problem conclusion
Increase the size of the APT hash mask on small memory systems.
Temporary fix
Comments
APAR Information
APAR number
IV56671
Reported component name
AIX V7.1
Reported component ID
5765H4000
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2014-03-13
Closed date
2014-03-13
Last modified date
2016-05-10
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
AIX V7.1
Fixed component ID
5765H4000
Applicable component levels
R710 PSY U858978
UP14/05/22 I 1000
PTF to Fileset Mapping
U858978 bos.mp64 7.1.3.15
[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSMV87","label":"AIX 6.1 Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSMVAX","label":"AIX Express Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11R","label":"AIX 7.1 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
10 May 2016