IJ03674: PS COMMAND CAN CRASH THE SYSTEM IN ___MEMCCPY64()

APAR status

• Closed as fixed if next.

Error description

• ps command can crash the system with the following stack
  trace:
  
  CRASH INFORMATION:
  CPU 46 CSA F00000002FF47600 at time of crash, error code
  for LEDs: 30000000
  pvthread+210600 STACK:
  [0000DA6C]___memccpy64+00006C ()
  [0044E3DC]getstring+0001DC (0000000001A9031E,
  08FFFFFFF0000000,
     F00000002FF473B0, F00000002FF47360, F00000002FF473E0,
  F00000002FF473E8,
     F00000002FF473D8, F00000002FF47A70)
  [0044DC60]getthem+0003A0 (??, ??, ??, ??, ??)
  [00003938]syscall+000230 ()
  [kdb_get_virtual_memory] no real storage @ 2FF21C2C
  [10001910]10001910 ()
  [kdb_read_mem] no real storage @ FFFFFFFFFFF5670
  

Local fix

• Disable storage keys:
  To turn off storage keys:
  
  skctl -k off -u off
  /usr/sbin/bosboot -a
  reboot
  

Problem summary

• Ps command can crash the system with storage key exceptions
  trace:
  
  CRASH INFORMATION:
  CPU 46 CSA F00000002FF47600 at time of crash, error code
  for LEDs: 30000000
  pvthread+210600 STACK:
   0000DA6C ___memccpy64+00006C ()
   0044E3DC getstring+0001DC (0000000001A9031E,
  08FFFFFFF0000000,
     F00000002FF473B0, F00000002FF47360, F00000002FF473E0,
  F00000002FF473E8,
     F00000002FF473D8, F00000002FF47A70)
   0044DC60 getthem+0003A0 (??, ??, ??, ??, ??)
   00003938 syscall+000230 ()
   kdb_get_virtual_memory  no real storage @ 2FF21C2C
   10001910 10001910 ()
   kdb_read_mem  no real storage @ FFFFFFFFFFF5670
  

Problem conclusion

Temporary fix

Comments

• This APAR is being closed FIN. This means that a solution to
  this APAR is expected to be delivered from IBM in a release
  (if any) to be available within the next 24 months.
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IJ00644

• APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels