A fix is available
APAR status
Closed as program error.
Error description
We can have a stack like the following: CRASH INFORMATION: CPU 24 CSA F1000815B0643D00 at time of crash, error code for LEDs: 30000000 pvthread+001600 STACK: [001D1AB8]output+000038 (0000000000000045, 0000000000000000, 0000000000000000 [??]) [001D185C]z_compress+00033C (??, ??, ??, ??, ??) [001D0F30]kernel_block_compress+000130 (??, ??, ??, ??, ??) [0003BF7C]errnv_write+00023C (??, ??) [0003BC74]errput+000174 (??, ??, ??, ??, ??) [0003A324]errsave_data+000204 (??, ??, ??, ??) [00014F50].kernel_add_gate_cstack+000030 () [041B77C8]efcddpin:efc_log_error+000488 (??, ??, ??, ??, ??, ??) [041D5B58]efcddpin:efc_mapdma_iocb+000E18 (??, ??) [041DA608]efcddpin:efc_start+000508 (??) [041DB36C]efcddpin:efc_output+00066C (??, ??) [04262438]efscsiddpin:efscsiddpin:.efsc_start+0005D8 () [04265D44]efscsiddpin:efscsiddpin:.efsc_strategy+000E84 () [00247AA4]std_devstrat+000364 (??) [002480D0]devstrat+000050 (??) [00014F50].kernel_add_gate_cstack+000030 () [042E04B8]scsidiskpin:SCSIDISK_ISSUE_CMD+0001B8 (??, ??) [042FEF00]scsidiskpin:scsidisk_start_in_progress+000380 (??) [04307218]scsidiskpin:scsidisk_start+000798 (??) [0430A0F8]scsidiskpin:scsidisk_strategy+000278 (??) [00247AA4]std_devstrat+000364 (??) [002480D0]devstrat+000050 (??) [00014F50].kernel_add_gate_cstack+000030 () [F1000000C0380CF0]powerdd:base_buf_guts+00051C (F1000A002BA0BC00, F1000A002ACC7000) [F1000000C0385034]powerdd:base_buf+0000A4 (F1000A002BA0BC00, F1000A002ACC7000) [F1000000C03652B8]powerdd:PowerPlatformBottomDispatch+000 128 (F1000A002BA0B800, F1000006059D9200) [F1000000C03654F4]powerdd:PowerBottomDispatch+0000B8 (F1000A002BA0B800, F1000A002ACC7000, F1000006059D9200) [F1000000C0365778]powerdd:PowerBottomDispatchPirp+0000A8 (F1000A002BA0C000, F1000A002ACC7000) [F1000000C0369D10]powerdd:PowerTopDispatch+000420 (F1000A002A502400, F1000006059D9200) [F1000000C0452710]powerdiskdd:safe_strategy_guts+000418 (F1000006059D9200) [F1000000C045467C]powerdiskdd:safe_strategy+000048 (F1000006059D9200) [00014D70].hkey_legacy_gate+00004C () [00247AA4]std_devstrat+000364 (??) [002480D0]devstrat+000050 (??) [00014F50].kernel_add_gate_cstack+000030 () [04414F6C]hd_pin_bot:hd_start@AF7_5+00014C (??) [0441D4B0]hd_pin_bot:hd_strategy+0000F0 (??) [00247AA4]std_devstrat+000364 (??) [002480D0]devstrat+000050 (??) [0025B008]j2PagerStrategy+000208 (??) [000637D4]v_pdtsio_common+0006B4 (??, ??, ??, ??, ??) [00063BB0]v_pdtsio+000050 (??) [002C1788]v_pfend_com+000428 (??) [002C1E78]v_pfend+000038 (??) [002C1CC4]vm_pfend+000044 (??) [0023FD54]internal_iodone_offl+000174 (??, ??) [0023FBA0]iodone_offl+000080 () [002431D4]i_softmod+000294 () [00330FF4]lru_poll_iodones+0000F4 (??) [00334518]v_steal_lrulist+0007B8 (??) [0033473C]v_pass2+0001BC (??, ??) [00335DE0]v_fblru_scanlist+000180 (??) [0032F09C]v_lru+00035C (??) [00331D98]v_memp_lru+000238 (??, ??) [0005E81C].backt+000100 () ____ Exception (F0000000300B5600) ____ iar : 000000000005E71C msr : 8000000000001032 cr : 44208022 lr : 00000000003308D8 ctr : 0000000000000000 xer : 20000020 mq : 00000000 asr : 000000054F62D001 amr : F3F0000000000000 r0 : 0000000000331B60 r1 : 0FFFFFFFF40A7E20 r2 : 0000000002B654A8 r3 : F1000F0009741800 r4 : 0000000000000000 r5 : 0000000000000000 r6 : 0000000000160049 r7 : 0000000000000000 r8 : 0000000000000106 r9 : 0000000000000001 r10 : 00000000003308D8 r11 : F0000000300B5600 r12 : 8000000000001032 r13 : F1000A1200225800 r14 : 00000000DEADBEEF r15 : 0000000002C00000 r16 : 00000000DEADBEEF r17 : 00000000DEADBEEF r18 : 00000000DEADBEEF r19 : 00000000DEADBEEF r20 : 0000000000000000 r21 : 0000000000000001 r22 : 0000000000000000 r23 : 0000000000000000 r24 : 5B4A4DA6D5740000 r25 : 0000000002014024 r26 : 0000000002014010 r27 : 000000000092DDC8 r28 : 0FFFFFFFF40A5D20 r29 : 0000000000000000 r30 : 0000000000000000 r31 : F1000F0009741800 prev 0000000000000000 stackfix 0000000000000000 int_ticks 0000 cfar 0000000000014D24 kjmpbuf 0000000000000000 excbranch 0000000000000000 no_pfault 00 intpri 0B backt 00 flags 00 hw_fru_id 00000006 hw_cpu_id 00000018 fpscr 0000000000000000 fpscrx 00000000 fpowner 00 fpeu 00 fpinfo 00 alloc F000 o_iar 0000000000000000 o_toc 0000000000000000 o_arg1 0000000000000000 o_vaddr 0000000000000000 krlockp 0000000000000000 rmgrwa 0000000000000000 amrstackhigh F00000003009DFF0 amrstacklow F00000003009D000 amrstackcur F00000003009DFF0 amrstackfix 0000000000000000 kstackhigh 0000000000000000 kstacksize 00000000 frrstart 700DFEED00000000 frrend 700DFEED00000000 frrcur 700DFEED00000000 frrstatic 0000 kjmpfrroff 0000 frrovcnt 0000 frrbarrcnt 0000 frrmask 00 callrmgr 00 Except : excp_type 00000000 ex[0] 0000000000000000 ex[1] 0000000000000000 ex[2] 0000000000000000 ex[3] 0000000000000000 ex[4] 0000000000000106 [0005E71C].backt+000000 () [003308D4]lru_thread+0002D4 (??) [003567D4]threadentry+000094 (??, ??, ??, ??) [kdb_read_mem] no real storage @ FFFFFFFFFFF6150
Local fix
N/A
Problem summary
The system crash could occur with any very deep stack trace that includes efc_log_error(). The crash will almost certainly be a DSI involving the stack pointer.
Problem conclusion
The stack data consumption is reduced. The kernel heap is used to store excess data.
Temporary fix
Comments
APAR Information
APAR number
IV02507
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2011-06-28
Closed date
2011-06-28
Last modified date
2013-04-16
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 610 STD EDI
Fixed component ID
5765G6200
Applicable component levels
R610 PSY U838041
UP11/10/13 I 1000
PTF to Fileset Mapping
U838041 devices.pci.df1000f7.com 6.1.7.0
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Document Information
Modified date:
16 April 2013