> Subject: unregister_device messages at shutdown (v5.4-rc) > > Not quite sure where to report this. > > Since v5.4-rc1, at shutdown I'm seeing a hang with this message repeated in > /var/log/messages: > > unregister_netdevice: waiting for ens1f0 to become free. Usage count = 1 > > Google turns up this particular failure off and on for the past few years from > various network devices. It's currently 100% reproducible on my rig. > > ens1f0 is a FastLinq NIC in iWARP mode: > > 01:00.0 Ethernet controller: QLogic Corp. FastLinQ QL41000 Series > 10/25/40/50GbE Controller (rev 02) > Subsystem: QLogic Corp. FastLinQ QL41212H 25GbE Adapter > > 3: ens1f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 9216 qdisc mq state > DOWN group default qlen 1000 > link/ether f4:e9:d4:72:49:f2 brd ff:ff:ff:ff:ff:ff > inet 192.168.100.51/24 brd 192.168.100.255 scope global ens1f0 > valid_lft forever preferred_lft forever > > (the network switch is powered off at the moment). > Perhaps you're hitting the issue addressed in this patch. https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/commit/?h=for-rc&id=390d3fdcae2da52755b31aa44fcf19ecb5a2488b
