IJ54879: BUG: SCHEDULING WHILE ATOMIC ERROR MESSAGE WHEN USING BLOCKING TRACES

APAR status

• Closed as program error.

Error description

• When capturing traces in blocking mode, the kernel message "BUG:
  scheduling while atomic error message when using blocking
  traces" can be triggered. This could also lead to a deadlocked
  node, requiring a reboot.
  

Local fix

• Capture traces in overwrite mode, not in blocking mode.
  

Problem summary

• When capturing traces in blocking mode, the kernel message "BUG:
  scheduling while atomic error message when using blocking
  traces" can be triggered. This could also lead to a deadlocked
  node, requiring a reboot.
  

Problem conclusion

• This problem is fixed in 5.1.9.10
  To see all Spectrum Scale APARs and their respective
  Fix solutions refer to page: 
  https://public.dhe.ibm.com/storage/spectrumscale/spectrum_scale
  _apars.html
  
  Benefits of the solution:
  The trace statements have been updated to avoid this kernel
  message.
  
  Work Around:
  Capture traces in overwrite mode, not in blocking mode.
  
  Symptom:
  Hang/Deadlock/Unresponsiveness/Long Waiters
  
  Platforms affected:
  ALL Linux OS environments
  
  Functional Area affected:
  All Scale Users
  
  Customer Impact:
  Suggested
  

Temporary fix

Comments

APAR Information

• 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

  SPEC SCALE STD

• Fixed component ID

  5737F33AP

Applicable component levels