On Mon, 2020-04-06 at 19:55 +0530, Krishna Chaitanya wrote: > > iw phy0 interface add wlan0 type station > > ip link set wlan0 up > Ah okay, got it, thanks. Very narrow window though :-) as the > alloc_ordered_workqueue > doesn't need RTNL and there is a long way to go to do if_add() from > user and setup > the driver for interrupts. True, I do wonder how this is hit. Maybe something with no preempt and a uevent triggering things? > Again depends on the driver though, it > should properly handle > pending ieee80211_register_hw() with start(). It could, but it'd be really tricky. Much better to fix mac80211. johannes