boot-time warning messages like: "sysfs: cannot create duplicate filename '/class/mdio_bus/ixgbe-...'"

Solution Verified - Updated -

Issue

  • Machine eventually crashes on system shutdown or module ixgbe unload
  • System log reports boot time sysfs WARNING messages like
[   20.658238] WARNING: CPU: 6 PID: 461 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x64/0x80
[   20.658240] sysfs: cannot create duplicate filename '/class/mdio_bus/ixgbe-mdio-0000:'

or

[  171.741561] WARNING: CPU: 84 PID: 1834 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x64/0x80
[  171.741562] sysfs: cannot create duplicate filename '/class/mdio_bus/ixgbe-c101'

Environment

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