> On Oct 7, 2019, at 12:07 PM, Saleem, Shiraz <shiraz.saleem@xxxxxxxxx> wrote: > >> >> 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 Thank you. I'll watch for that to appear in v5.4-rc. -- Chuck Lever
