RHEL server with qlcnic driver experiences link failures, "LOOP DOWN" messages, path failures, I/O errors, and/or crashes when running sosreport or 'ethtool'

Solution Verified - Updated -


  • Running ethtool -S on a QLogic NIC using the qlcnic module causes the system to crash.
  • Attempting to generate an SOS Report with the sosreport command causes the system to crash.
  • I ran sosreport and my system was fenced after all of its paths failed


  • Red Hat Enterprise Linux (RHEL) 7
    • kernel releases prior to 3.10.0-229.el7
    • Using the qlcnic driver provided with Red Hat's kernel package (as opposed to a version from the server vendor or QLogic)
  • RHEL 5 or 6
    • These releases may be affected if running an affected version of qlcnic provided by a 3rd party, such as the server vendor or QLogic. Consult with that party to determine which versions of their driver may be affected

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