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  1. RHEL
  2. RHEL-7946

cifsiod kernel has high cpu usage and server is freezing up after which only fix is to force reboot.

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      Description of problem:
      This is a new VM, tried on kernel version 5.14.0.234 and it is working just fine. Kernel 5.14.0.289-299 do not work.

      Version-Release number of selected component (if applicable):

      How reproducible:

      Steps to Reproduce:
      1. install keyutils and cifs-utils
      2. mount a cifs mount to the server.
      3. Wait for 30-180 minutes before you will start seeing in dmesg for something like "watchdog: BUG: soft looking - CPU## stuck for xxxs! [kworker/0:3.....]

      Actual results:
      dmesg shows info like "watchdog: BUG: soft looking - CPU## stuck for xxxs! [kworker/0:3.....] and server is very slow to do anything.

      Expected results:
      server should not be slow.

      Additional info:
      I can access the file without any issues until the server is very slow.

            jira-bugzilla-migration RH Bugzilla Integration
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            Xiaoli Feng Xiaoli Feng
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              Created:
              Updated: