unregister_netdevice - waiting for DEV to become free

posted & found by zer0day

tl;dr

Got from syzkaller & Found in LK v4.17.0-rc1.

Call Trace (Dump)

Here’s a dmesg.

...
[  292.993864] unregister_netdevice: waiting for lo to become free. Usage count = 5
...

PoC

Later…

End