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[Bug 1457863] Re: interface eth0 disappears after network cable unplug/re-plug

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Eric Carlier <1457863@xxxxxxxxxxxxxxxxxx>
Date: Sat, 23 May 2015 12:55:00 -0000
Reply-to: Bug 1457863 <1457863@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Tested upstream kernel 4.1-rc4 => fixed, with the following kern.log
lines

May 23 14:27:49 host kernel: [  188.368215] atl1c 0000:06:00.0: atl1c: eth0 NIC Link is Down
May 23 14:28:03 host kernel: [  202.373866] pciehp 0000:00:1c.5:pcie04: Card not present on Slot(5)
May 23 14:28:03 host kernel: [  202.373877] pciehp 0000:00:1c.5:pcie04: slot(5): Link Down event
May 23 14:28:03 host kernel: [  202.373902] pciehp 0000:00:1c.5:pcie04: Link Down event ignored on slot(5): already powering off
May 23 14:28:03 host kernel: [  202.378030] pciehp 0000:00:1c.5:pcie04: Card present on Slot(5)
May 23 14:28:03 host kernel: [  202.378211] pciehp 0000:00:1c.5:pcie04: slot(5): Link Up event
May 23 14:28:03 host kernel: [  202.378222] pciehp 0000:00:1c.5:pcie04: Link Up event ignored on slot(5): already powering on
May 23 14:28:03 host kernel: [  202.626189] atl1c 0000:06:00.0: MAC state machine can't be idle since disabled for 10ms second
May 23 14:28:03 host kernel: [  202.818099] pci 0000:06:00.0: [1969:1063] type 00 class 0x020000
May 23 14:28:03 host kernel: [  202.818135] pci 0000:06:00.0: reg 0x10: [mem 0xd3200000-0xd323ffff 64bit]
May 23 14:28:03 host kernel: [  202.818148] pci 0000:06:00.0: reg 0x18: [io  0x8000-0x807f]
May 23 14:28:03 host kernel: [  202.818408] pci 0000:06:00.0: PME# supported from D0 D1 D2 D3hot D3cold
May 23 14:28:03 host kernel: [  202.818454] pci 0000:06:00.0: System wakeup disabled by ACPI
May 23 14:28:03 host kernel: [  202.826146] pci 0000:06:00.0: BAR 0: assigned [mem 0xd3200000-0xd323ffff 64bit]
May 23 14:28:03 host kernel: [  202.826163] pci 0000:06:00.0: BAR 2: assigned [io  0x8000-0x807f]
May 23 14:28:03 host kernel: [  202.826171] pcieport 0000:00:1c.5: PCI bridge to [bus 06]
May 23 14:28:03 host kernel: [  202.826177] pcieport 0000:00:1c.5:   bridge window [io  0x8000-0x8fff]
May 23 14:28:03 host kernel: [  202.826185] pcieport 0000:00:1c.5:   bridge window [mem 0xd3200000-0xd45fffff]
May 23 14:28:03 host kernel: [  202.826197] pcieport 0000:00:1c.5:   bridge window [mem 0xd9d00000-0xd9efffff 64bit pref]
May 23 14:28:03 host kernel: [  202.826288] atl1c 0000:06:00.0: enabling device (0000 -> 0002)
May 23 14:28:03 host kernel: [  202.826360] do_IRQ: 0.226 No irq handler for vector (irq -1)
May 23 14:28:03 host kernel: [  202.854609] atl1c 0000:06:00.0: version 1.0.1.1-NAPI
May 23 14:28:03 host kernel: [  202.874925] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
-> re-plug here
May 23 14:28:15 host kernel: [  214.069310] atl1c 0000:06:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full Duplex>
May 23 14:28:15 host kernel: [  214.069334] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

Tested upstream kernel 3.14.1-trusty => fixed, with the following kern.log lines
May 23 14:40:34 host kernel: [  135.049761] atl1c 0000:06:00.0: atl1c: eth0 NIC Link is Down
-> re-plug here
May 23 14:41:35 host kernel: [  195.412305] atl1c 0000:06:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full Duplex>

Tested upstream kernel 3.13.11.11-trusty => fixed, same verbosity as
3.14.1-trusty.

** Tags removed: latest-bios-211
** Tags added: kernel-fixed-upstream-3.13.11.11-trusty kernel-fixed-upstream-3.14.1-trusty kernel-fixed-upstream-4.1-rc4 latest-bios-211kernel-fixed-upstream

** Tags removed: latest-bios-211kernel-fixed-upstream
** Tags added: kernel-fixed-upstream latest-bios-211

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1457863

Title:
  interface eth0 disappears after network cable unplug/re-plug

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  The following bug is reproducible with linux-image-3.13.0-53-generic,
  but not with linux-image-3.13.0-52-generic.

  When I unplug the Ethernet cable from my laptop, I get the following messages in /var/log/kern.log after a few seconds (~20s):
  May 22 13:59:36 host kernel: [ 5498.465626] pciehp 0000:00:1c.5:pcie04: Card not present on Slot(5)
  May 22 13:59:36 host kernel: [ 5498.478755] pciehp 0000:00:1c.5:pcie04: Card present on Slot(5)
  May 22 13:59:36 host kernel: [ 5498.598744] pciehp 0000:00:1c.5:pcie04: Device 0000:06:00.0 already exists at 0000:06:00, cannot hot-add
  May 22 13:59:36 host kernel: [ 5498.598755] pciehp 0000:00:1c.5:pcie04: Cannot add device at 0000:06:00
  May 22 13:59:36 host kernel: [ 5498.718646] atl1c 0000:06:00.0: MAC state machine can't be idle since disabled for 10ms second

  Then, when I re-plug the cable, eth0 does not appear in network manager; there is no message in kern.log.
  eth0 does not appear in ifconfig -a

  $ ifconfig -a
  lo        Link encap:Local Loopback  
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:65536  Metric:1
            RX packets:11586 errors:0 dropped:0 overruns:0 frame:0                                                                                                        
            TX packets:11586 errors:0 dropped:0 overruns:0 carrier:0                                                                                                      
            collisions:0 txqueuelen:0                                                                                                                                     
            RX bytes:16392353 (16.3 MB)  TX bytes:16392353 (16.3 MB)                                                                                                      

  wlan0     Link encap:Ethernet  HWaddr 48:5d:xx:xx:xx:xx  
            inet addr:192.168.xx.xx  Bcast:192.168.xx.xx  Mask:255.255.255.0
            inet6 addr: fe80::xxxx:xxxx:xxxx:xxxx/64 Scope:Link
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:19 errors:0 dropped:0 overruns:0 frame:0
            TX packets:66 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000 
            RX bytes:2651 (2.6 KB)  TX bytes:12364 (12.3 KB)

  I tried to reinitialize networking with the following:
  sudo modprobe -r atl1c
  sudo modprobe atl1c

  Still no eth0 and no message in kern.log

  I tried
  $ sudo ifup eth0
  Ignoring unknown interface eth0=eth0.

  Same symptoms occur when I reboot my router, and its Ethernet
  interface becomes temporarily unavailable.

  Only way I found to restore eth0 was rebooting.
  --- 
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  chewy      3002 F.... pulseaudio
   /dev/snd/controlC0:  chewy      3002 F.... pulseaudio
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 14.04
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=17ba1751-f706-417b-ac40-1b4a7be825d8
  InstallationDate: Installed on 2012-12-29 (873 days ago)
  InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120423)
  MachineType: ASUSTeK Computer Inc. N53Jq
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-53-generic root=UUID=d48490d1-ca6a-448d-82e6-6397021cd403 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-53.89-generic 3.13.11-ckt19
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-53-generic N/A
   linux-backports-modules-3.13.0-53-generic  N/A
   linux-firmware                             1.127.12
  Tags:  trusty
  Uname: Linux 3.13.0-53-generic x86_64
  UpgradeStatus: Upgraded to trusty on 2014-09-05 (259 days ago)
  UserGroups: adm admin cdrom dialout disk fuse lpadmin mediatomb plugdev sambashare vboxusers wireshark
  _MarkForUpload: True
  dmi.bios.date: 01/25/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: N53Jq.211
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: N53Jq
  dmi.board.vendor: ASUSTeK Computer Inc.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK Computer Inc.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrN53Jq.211:bd01/25/2011:svnASUSTeKComputerInc.:pnN53Jq:pvr1.0:rvnASUSTeKComputerInc.:rnN53Jq:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
  dmi.product.name: N53Jq
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK Computer Inc.

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References

[Bug 1457863] [NEW] interface eth0 disappears after network cable unplug/re-plug
From: Eric Carlier, 2015-05-22