A fix is available
APAR status
Closed as program error.
Error description
Using a DEBUG kernel on a P8 system may hit an incorrect assert when trying to use mprotect() to remove all access to a privately mmap'ed object that still has translations to the source object. The stack trace back will have v_relalias_block. Here is one example trace back: KDB(0)> f pvthread+013F00 STACK: ■00023980abend_trap+000000 () ■0026FE98v_relalias_block+000498 (??, ??, ??, ??, ??) ■002735E4v_relalias+000704 (??, ??, ??, ??, ??) ■00400DD4v_protectap+0007F4 (??, ??, ??, ??, ??, ??) ■004D3E78v_preprotectap+000238 (??, ??, ??, ??, ??, ??) ■0002F3E0begfst+000190 ()
Local fix
Problem summary
Using a DEBUG kernel on a P8 system may hit an incorrect assert when trying to use mprotect() to remove all access to a privately mmap'ed object that still has translations to the source object. The stack trace back will have v_relalias_block. Here is one example trace back: KDB(0)> f pvthread+013F00 STACK: 00023980 abend_trap+000000 () 0026FE98 v_relalias_block+000498 (??, ??, ??, ??, ??) 002735E4 v_relalias+000704 (??, ??, ??, ??, ??) 00400DD4 v_protectap+0007F4 (??, ??, ??, ??, ??, ??) 004D3E78 v_preprotectap+000238 (??, ??, ??, ??, ??, ??) 0002F3E0 begfst+000190 ()
Problem conclusion
Fix the DEBUG assert.
Temporary fix
Comments
6100-09 - use AIX APAR IV70175 7100-03 - use AIX APAR IV70167
APAR Information
APAR number
IV70175
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2015-02-27
Closed date
2015-02-27
Last modified date
2015-11-22
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 U861403
UP15/11/22 I 1000
PTF to Fileset Mapping
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Document Information
Modified date:
17 December 2021