From: Vitaly Kuznetsov <[email protected]> Date: Thu, 11 May 2017 13:58:06 +0200
> Unavoidable crashes in netfront_resume() and netback_changed() after a > previous fail in talk_to_netback() (e.g. when we fail to read MAC from > xenstore) were discovered. The failure path in talk_to_netback() does > unregister/free for netdev but we don't reset drvdata and we try accessing > it after resume. > > Fix the bug by removing the whole xen device completely with > device_unregister(), this guarantees we won't have any calls into netfront > after a failure. > > Signed-off-by: Vitaly Kuznetsov <[email protected]> > --- > Changes since v1: instead of cleaning drvdata and checking for it in > netfront_resume() and netback_changed() remove the device completely with > device_unregister() [David Miller] This looks a lot better, applied, thanks!
