IJ57452: DSI IN D_UNMAP_LIST_TCE_BULKFREE ON 7300-03-01

APAR status

• Closed as duplicate of another APAR.

Error description

• Crash with the following stack:
  CRASH INFORMATION:
  CPU 48 CSA F0000000309BF600 at time of crash, error code
  for LEDs: 30000000
  pvthread+092A00 STACK:
  [F10009D5A01954E8]d_unmap_list_tce_bulkfree+000248
  (0000000000000004, 0000000000041000 [??])
  [F10009D5A021DC70]cvfc_unmapdma_iocb+0000D0 (??, ??, ??)
  [F10009D5A01E6704]cvfc_proc_proto_queue@AF101_26+000324
  (??, ??, ??, ??, ??, ??, ??)
  [F10009D5A01DCA3C]cvfc_proc_proto_response+0004DC (??,
  ??)
  [F10009D5A020AB54]cvfc_proto_chn_kthread+000CB4 (??)
  [00488FD4]threadentry+000054 (??, ??, ??, ??)
  

Local fix

• The BULK TCE remove can be disabled with ioo to bypass
  the problem code:
  
  ioo [-p] -o pcibus_dma_bulkfree_dyn_disable=1
  
  Specify -p to make change permanent across reboots.
  This is a restricted tunable, so the command will ask for
  confirmation.
  

Problem summary

Problem conclusion

Temporary fix

Comments

• This is a duplicate of IJ57575.
  

APAR Information

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

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

Fix information

Applicable component levels