Public bug reported:

On stock kernel 4.4.0.184-214, issuing "tc qdisc add dev eth0 root fq maxrate 
25mbit" causes CPU lockup
(NMI watchdog: BUG: soft lockup - CPU#26 stuck for 22s! [tc:6394])

This does not occur on 4.4.0.179 or earlier.
Happens on both a intel i40e driver and ixgbe.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "apport.linux-image-4.4.0-184-generic.5fnlmlqp.apport"
   
https://bugs.launchpad.net/bugs/1883597/+attachment/5384147/+files/apport.linux-image-4.4.0-184-generic.5fnlmlqp.apport

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https://bugs.launchpad.net/bugs/1883597

Title:
  Kernel 4.4.0-184 hangs when issuing tc qdisc command

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