Process blocked in do_get_write_access

Solution Unverified - Updated -

Issue

  • Process blocked in do_get_write_access
crash> bt ffff88380e6ea040
PID: 28626  TASK: ffff88380e6ea040  CPU: 1   COMMAND: "sas"
 #0 [ffff88380949f878] schedule at ffffffff8150e172
 #1 [ffff88380949f940] do_get_write_access at ffffffffa056709d [jbd2]
 #2 [ffff88380949fa20] jbd2_journal_get_write_access at ffffffffa0567471 [jbd2]
 #3 [ffff88380949fa40] __ext4_journal_get_write_access at ffffffffa05a96d8 [ext4]
  • Reports of hung task watchdog panics due to tasks being blocked in do_get_write_access() on shadow journal buffers.

Environment

  • Red Hat Enterprise Linux 6.1 and above

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