Comment 20 for bug 1213879

I'm aiming to fix this up in upstream trunk first and then backport the required commits to 1.10.

Right now I'm getting:

Aug 21 09:02:27 armstrong kernel: [54446.824413] ------------[ cut here ]------------
Aug 21 09:02:27 armstrong kernel: [54446.824425] WARNING: CPU: 1 PID: 8767 at /build/buildd/linux-3.11.0/net/core/dev.c:5078 rollback_registered_many+0x219/0x250()
Aug 21 09:02:27 armstrong kernel: [54446.824426] Modules linked in: openvswitch(OF) veth(F) mmc_block xt_REDIRECT(F) xt_hl(F) xt_conntrack(F) ipt_REJECT(F) xt_CHECKSUM(F) iptable_mangle(F) xt_tcpudp(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ebtable_nat(F) ebtables(F) ipt_MASQUERADE(F) iptable_nat(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) nf_nat_ipv4(F) nf_nat(F) nf_conntrack(F) ip_tables(F) x_tables(F) dm_crypt(F) bridge(F) stp(F) llc(F) gre(F) x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel(F) kvm(F) crc32_pclmul(F) ghash_clmulni_intel(F) aesni_intel(F) aes_x86_64(F) lrw(F) gf128mul(F) glue_helper(F) ablk_helper(F) cryptd(F) ipheth snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec microcode(F) snd_usb_audio snd_usbmidi_lib snd_hwdep(F) thinkpad_acpi nvram(F) snd_pcm(F) snd_seq_midi(F) parport_pc(F) snd_seq_midi_event(F) ppdev(F) arc4(F) joydev(F) snd_rawmidi(F) uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev iwldvm snd_page_alloc(F) mac80211 btusb psmouse
Aug 21 09:02:27 armstrong kernel: (F) serio_raw(F) iwlwifi snd_seq(F) rfcomm bnep cfg80211 bluetooth lpc_ich snd_seq_device(F) snd_timer(F) snd(F) tpm_tis soundcore(F) mac_hid mei_me mei lp(F) parport(F) nls_iso8859_1(F) usb_storage(F) hid_generic hid_microsoft usbhid hid sdhci_pci i915 sdhci i2c_algo_bit ahci(F) libahci(F) drm_kms_helper drm e1000e(F) ptp(F) pps_core(F) wmi video(F) [last unloaded: openvswitch]
Aug 21 09:02:27 armstrong kernel: [54446.824498] CPU: 1 PID: 8767 Comm: ip Tainted: GF W O 3.11.0-2-generic #5-Ubuntu
Aug 21 09:02:27 armstrong kernel: [54446.824500] Hardware name: LENOVO 2324CTO/2324CTO, BIOS G2ET91WW (2.51 ) 01/14/2013
Aug 21 09:02:27 armstrong kernel: [54446.824502] 0000000000000009 ffff8803201518a8 ffffffff816f1668 0000000000000000
Aug 21 09:02:27 armstrong kernel: [54446.824504] ffff8803201518e0 ffffffff81061cdd ffff88025bc87000 ffff8803201518d8
Aug 21 09:02:27 armstrong kernel: [54446.824507] ffff880320151948 0000000000000000 ffffffff81cd3800 ffff8803201518f0
Aug 21 09:02:27 armstrong kernel: [54446.824510] Call Trace:
Aug 21 09:02:27 armstrong kernel: [54446.824515] [<ffffffff816f1668>] dump_stack+0x45/0x56
Aug 21 09:02:27 armstrong kernel: [54446.824519] [<ffffffff81061cdd>] warn_slowpath_common+0x7d/0xa0
Aug 21 09:02:27 armstrong kernel: [54446.824522] [<ffffffff81061dba>] warn_slowpath_null+0x1a/0x20
Aug 21 09:02:27 armstrong kernel: [54446.824524] [<ffffffff815f84b9>] rollback_registered_many+0x219/0x250
Aug 21 09:02:27 armstrong kernel: [54446.824527] [<ffffffff815f8547>] unregister_netdevice_many+0x17/0x70
Aug 21 09:02:27 armstrong kernel: [54446.824530] [<ffffffff8160bc6f>] rtnl_dellink+0xbf/0x130
Aug 21 09:02:27 armstrong kernel: [54446.824533] [<ffffffff81609159>] rtnetlink_rcv_msg+0x99/0x260
Aug 21 09:02:27 armstrong kernel: [54446.824537] [<ffffffff81190048>] ? __kmalloc_node_track_caller+0x58/0x1d0
Aug 21 09:02:27 armstrong kernel: [54446.824540] [<ffffffff8115c109>] ? zone_statistics+0x89/0xa0
Aug 21 09:02:27 armstrong kernel: [54446.824543] [<ffffffff815ec78e>] ? __alloc_skb+0x7e/0x2a0
Aug 21 09:02:27 armstrong kernel: [54446.824546] [<ffffffff816090c0>] ? rtnetlink_rcv+0x30/0x30
Aug 21 09:02:27 armstrong kernel: [54446.824550] [<ffffffff81626d29>] netlink_rcv_skb+0xa9/0xc0
Aug 21 09:02:27 armstrong kernel: [54446.824552] [<ffffffff816090b8>] rtnetlink_rcv+0x28/0x30
Aug 21 09:02:27 armstrong kernel: [54446.824555] [<ffffffff8162637d>] netlink_unicast+0xdd/0x190
Aug 21 09:02:27 armstrong kernel: [54446.824559] [<ffffffff8136c3cd>] ? memcpy_fromiovec+0x4d/0x90
Aug 21 09:02:27 armstrong kernel: [54446.824562] [<ffffffff8162672f>] netlink_sendmsg+0x2ff/0x740
Aug 21 09:02:27 armstrong kernel: [54446.824566] [<ffffffff815e42b9>] sock_sendmsg+0x99/0xd0
Aug 21 09:02:27 armstrong kernel: [54446.824569] [<ffffffff8135f2ae>] ? radix_tree_lookup_slot+0xe/0x10
Aug 21 09:02:27 armstrong kernel: [54446.824573] [<ffffffff815e46ac>] ___sys_sendmsg+0x36c/0x380
Aug 21 09:02:27 armstrong kernel: [54446.824576] [<ffffffff81168419>] ? handle_mm_fault+0x299/0x670
Aug 21 09:02:27 armstrong kernel: [54446.824580] [<ffffffff816fc9a4>] ? __do_page_fault+0x204/0x540
Aug 21 09:02:27 armstrong kernel: [54446.824583] [<ffffffff811ba68f>] ? __d_free+0x3f/0x60
Aug 21 09:02:27 armstrong kernel: [54446.824587] [<ffffffff8110434c>] ? acct_account_cputime+0x1c/0x20
Aug 21 09:02:27 armstrong kernel: [54446.824591] [<ffffffff8109795c>] ? account_user_time+0x9c/0xb0
Aug 21 09:02:27 armstrong kernel: [54446.824594] [<ffffffff815e5492>] __sys_sendmsg+0x42/0x80
Aug 21 09:02:27 armstrong kernel: [54446.824596] [<ffffffff815e54e2>] SyS_sendmsg+0x12/0x20
Aug 21 09:02:27 armstrong kernel: [54446.824599] [<ffffffff8170172f>] tracesys+0xe1/0xe6
Aug 21 09:02:27 armstrong kernel: [54446.824601] ---[ end trace 28b7f8f9ad7af3a3 ]---

git repository to follow....