A fix is available
APAR status
Closed as program error.
Error description
************************************************************** * USERS AFFECTED: * Systems running the AIX 7200-01 Technology Level * with bos.mp64 at the 7.2.1.3 level and below. ************************************************************** * ERROR DESCRIPTION: * If procfs /proc/<pid>/fd/ directory is accessed for a * process that uses many file descriptors, the LPAR my crash * due to bad values in the application stack data. * This occurs when the application closes many file * descriptors all at once while at the same time the procfs * data in /proc/<pid>/fd/ is being accessed. * * This has been most commonly seen when the 'fuser' command is * run while an application is running that opens and closes * many files during its execution. * The crash can have varied symptoms, but in one common case * the stack looks like: * (0)> f * pvthread+018000 STACK: * 000039B4 .sys_call_ret+000078 () * 00003958 .sys_call_ret+00001C () ************************************************************** * RECOMMENDATION: * Install APAR IV95590. * Prior to fix availability, an interim fix is available from * either * ftp://aix.software.ibm.com/aix/ifixes/iv95590/ * https://aix.software.ibm.com/aix/ifixes/iv95590/ * The ifix can be installed using Live Update (LU). * If LU is not used, installation of the ifix requires a * reboot. **************************************************************
Local fix
Problem summary
System crash with following stack: (0)> f pvthread+018000 STACK: 000039B4 .sys_call_ret+000078 () 00003958 .sys_call_ret+00001C () uninitialized stack variable content access to write reulted in corruption of mst/other u-block area.
Problem conclusion
Change the code to avoid this corruption.
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
IV95590
Reported component name
AIX V7.2
Reported component ID
5765CD200
Reported release
720
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Submitted date
2017-05-01
Closed date
2017-05-01
Last modified date
2017-09-25
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 V7.2
Fixed component ID
5765CD200
Applicable component levels
R720 PSY U873438
UP17/09/21 I 1000
PTF to Fileset Mapping
U873438 bos.mp64 7.2.1.4
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Document Information
Modified date:
25 September 2017