** Also affects: nplan (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: nplan (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Yakkety)
   Importance: Undecided
       Status: New

** Also affects: nplan (Ubuntu Yakkety)
   Importance: Undecided
       Status: New

** Description changed:

+ [Impact]
+ netplan-configured systems with mwifiex interfaces crash if netplan attempts 
to unbind/bind the interface.
+ 
+ [Test case]
+ 1) Run 'netplan apply' on a system with mwifiex_pci driver.
+ 
+ The system should not crash, and the mwifiex interface should remain
+ untouched.
+ 
+ [Regression potential]
+ Interfaces other than those affected by unbind/bind crashes or failures 
should still be unbound when 'netplan apply' is run. This affects most wireless 
interfaces, with the notable exception of mwifiex and brcmfmac. Failure to 
apply netplan configuration for a legitimate mwifiex device (wireless 
connection driven by NetworkManager renderer using netplan) would also 
constitute a regression.
+ 
+ [Original bug report]
  # echo 0000:03:00.0 > /sys/bus/pci/drivers/mwifiex_pcie/unbind
- # echo 0000:03:00.0 > /sys/bus/pci/drivers/mwifiex_pcie/bin
+ # echo 0000:03:00.0 > /sys/bus/pci/drivers/mwifiex_pcie/bind
  
  Keep doing the bind/unbind actions, it would crash very soon.

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https://bugs.launchpad.net/bugs/1630285

Title:
  mwifiex_pcie crashes after several bind/unbind

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