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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

** Tags added: cherry-pick

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https://bugs.launchpad.net/bugs/1225571

Title:
  WARNING: CPU: 0 PID: 1529 at
  /build/buildd/linux-3.11.0/kernel/softirq.c:159
  local_bh_enable+0x60/0x90()

Status in “linux” package in Ubuntu:
  Triaged

Bug description:
  After updating my system from raring to saucy it was crashing during
  boot. After some digging I realised that it is connected to the
  network interfaces. After removing the auto line for the two network
  interfaces in /etc/network/interfaces the system boots successfully.

  If one then tries to bring up the network interface using the
  via_velocity driver (using ifup) the system crashes and the following
  message appears in syslog:

  Sep 15 02:25:24 nas dhclient: Internet Systems Consortium DHCP Client 4.2.4
  Sep 15 02:25:24 nas dhclient: Copyright 2004-2012 Internet Systems Consortium.
  Sep 15 02:25:24 nas dhclient: All rights reserved.
  Sep 15 02:25:24 nas dhclient: For info, please visit https://www.isc.org/software/dhcp/
  Sep 15 02:25:24 nas dhclient: 
  Sep 15 02:25:25 nas kernel: [   81.953639] Velocity is AUTO mode
  Sep 15 02:25:25 nas dhclient: Listening on LPF/eth0/00:40:63:f5:15:76
  Sep 15 02:25:25 nas dhclient: Sending on   LPF/eth0/00:40:63:f5:15:76
  Sep 15 02:25:25 nas dhclient: Sending on   Socket/fallback
  Sep 15 02:25:25 nas dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0x4ff0e6ad)
  Sep 15 02:25:26 nas kernel: [   83.462216] eth0: Link auto-negotiation speed 100M bps full duplex
  Sep 15 02:25:28 nas dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0x4ff0e6ad)
  Sep 15 02:25:29 nas kernel: [   86.675203] ------------[ cut here ]------------
  Sep 15 02:25:29 nas kernel: [   86.675227] WARNING: CPU: 0 PID: 1529 at /build/buildd/linux-3.11.0/kernel/softirq.c:159 local_bh_enable+0x60/0x90()
  Sep 15 02:25:29 nas kernel: [   86.675231] Modules linked in: snd_hda_codec_via snd_hda_intel snd_hda_codec snd_hwdep(F) snd_pcm(F) snd_page_alloc(F) snd_seq_midi(F) snd_seq_midi_event(F) via_cputemp snd_rawmidi(F) snd_seq(F) snd_seq_device(F) snd_timer(F) i2c_viapro psmouse(F) serio_raw(F) snd(F) soundcore(F) shpchp mac_hid hwmon_vid lp(F) parport(F) binfmt_misc(F) raid10(F) raid1(F) raid0(F) multipath(F) linear(F) dm_crypt(F) via_rng raid456(F) async_raid6_recov(F) async_memcpy(F) async_pq(F) async_xor(F) async_tx(F) xor(F) raid6_pq(F) pata_acpi padlock_sha padlock_aes pata_via via_velocity via_rhine mii(F) ahci(F) libahci(F) crc_ccitt(F)
  Sep 15 02:25:29 nas kernel: [   86.675315] CPU: 0 PID: 1529 Comm: SpiderOak Tainted: GF            3.11.0-7-generic #13-Ubuntu
  Sep 15 02:25:29 nas kernel: [   86.675320] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./To be filled by O.E.M., BIOS 080014  12/18/2007
  Sep 15 02:25:29 nas kernel: [   86.675324]  00000000 00000000 ee803ce8 c16313c4 00000000 ee803d18 c105268e c1805af4
  Sep 15 02:25:29 nas kernel: [   86.675336]  00000000 000005f9 c1805dc8 0000009f c1056b50 c1056b50 c19566c0 efbafb80
  Sep 15 02:25:29 nas kernel: [   86.675347]  00000000 ee803d28 c1052752 00000009 00000000 ee803d30 c1056b50 ee803d4c
  Sep 15 02:25:29 nas kernel: [   86.675359] Call Trace:
  Sep 15 02:25:29 nas kernel: [   86.675371]  [<c16313c4>] dump_stack+0x41/0x52
  Sep 15 02:25:29 nas kernel: [   86.675379]  [<c105268e>] warn_slowpath_common+0x7e/0xa0
  Sep 15 02:25:29 nas kernel: [   86.675387]  [<c1056b50>] ? local_bh_enable+0x60/0x90
  Sep 15 02:25:29 nas kernel: [   86.675394]  [<c1056b50>] ? local_bh_enable+0x60/0x90
  Sep 15 02:25:29 nas kernel: [   86.675401]  [<c1052752>] warn_slowpath_null+0x22/0x30
  Sep 15 02:25:29 nas kernel: [   86.675409]  [<c1056b50>] local_bh_enable+0x60/0x90
  Sep 15 02:25:29 nas kernel: [   86.675421]  [<c155f1ea>] dst_alloc+0x12a/0x140
  Sep 15 02:25:29 nas kernel: [   86.675431]  [<c158189d>] rt_dst_alloc+0x4d/0x60
  Sep 15 02:25:29 nas kernel: [   86.675440]  [<c1583fdc>] ip_route_input_noref+0x2bc/0xa30
  Sep 15 02:25:29 nas kernel: [   86.675448]  [<c107c504>] ? resched_task+0x24/0x70
  Sep 15 02:25:29 nas kernel: [   86.675456]  [<c107cfd8>] ? ttwu_do_wakeup+0x18/0x100
  Sep 15 02:25:29 nas kernel: [   86.675464]  [<c1585b4b>] ip_rcv_finish+0xbb/0x340
  Sep 15 02:25:29 nas kernel: [   86.675471]  [<c1586414>] ip_rcv+0x254/0x3c0
  Sep 15 02:25:29 nas kernel: [   86.675479]  [<c1558217>] __netif_receive_skb_core+0x557/0x730
  Sep 15 02:25:29 nas kernel: [   86.675487]  [<c1558406>] __netif_receive_skb+0x16/0x60
  Sep 15 02:25:29 nas kernel: [   86.675494]  [<c155846f>] netif_receive_skb+0x1f/0x80
  Sep 15 02:25:29 nas kernel: [   86.675516]  [<f845e7ab>] velocity_rx_srv+0x2ab/0x410 [via_velocity]
  Sep 15 02:25:29 nas kernel: [   86.675525]  [<c13dfa19>] ? __mix_pool_bytes+0x39/0x80
  Sep 15 02:25:29 nas kernel: [   86.675534]  [<c1014790>] ? alternatives_enable_smp+0x110/0x110
  Sep 15 02:25:29 nas kernel: [   86.675547]  [<f84608ac>] velocity_poll+0x3c/0x90 [via_velocity]
  Sep 15 02:25:29 nas kernel: [   86.675554]  [<c1558725>] net_rx_action+0xf5/0x1f0
  Sep 15 02:25:29 nas kernel: [   86.675562]  [<c10573c1>] __do_softirq+0xc1/0x1d0
  Sep 15 02:25:29 nas kernel: [   86.675574]  [<c103cd90>] ? ack_apic_level+0x60/0x100
  Sep 15 02:25:29 nas kernel: [   86.675584]  [<c10d7100>] ? handle_irq_event_percpu+0x150/0x1a0
  Sep 15 02:25:29 nas kernel: [   86.675591]  [<c1057635>] irq_exit+0x95/0xa0
  Sep 15 02:25:29 nas kernel: [   86.675602]  [<c163f1f5>] do_IRQ+0x45/0xb0
  Sep 15 02:25:29 nas kernel: [   86.675610]  [<c163efb3>] common_interrupt+0x33/0x38
  Sep 15 02:25:29 nas kernel: [   86.675616] ---[ end trace 00a91aa3f264230a ]---

  No crash occurs when bringing up the second interface in the machine
  (using the via_rhine driver).

  Testing with the mainline kernels from here http://kernel.ubuntu.com/~kernel-ppa/mainline/ the problem does:
  not appear with v3.11-rc5-saucy
  appear with v3.11-rc6-saucy
  appear with v3.11-saucy (same hang, no crash message in syslog)
  appear with v3.11.1-saucy (same hang, no crash message in syslog)

  The problem is not present using the ubuntu kernel 3.8.0-29-generic
  from raring.

  The machine in question has the via epia sn18000g motherboard with
  both mentioned network interfaces onboard.

  I suspect the changes here
  https://github.com/torvalds/linux/commit/2fdac010bdcf10a30711b6924612dfc40daf19b8
  could be involved.

  The problem appears reliably. So, I am happy to test other kernels
  (versions, patched, ...).

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-7-generic 3.11.0-7.13
  ProcVersionSignature: Ubuntu 3.11.0-7.13-generic 3.11.0
  Uname: Linux 3.11.0-7-generic i686
  ApportVersion: 2.12.1-0ubuntu4
  Architecture: i386
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  Date: Sun Sep 15 03:01:37 2013
  HibernationDevice: RESUME=UUID=505d751d-1bf4-4f44-bb59-b4c1547800f9
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
   
   eth1      no wireless extensions.
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-7-generic root=UUID=486c7989-4b56-43de-95fd-27ac5a386777 ro console=tty0 console=ttyS0,115200n8 crashkernel=384M-2G:64M,2G-:128M --verbose
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-7-generic N/A
   linux-backports-modules-3.11.0-7-generic  N/A
   linux-firmware                            1.114
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: Upgraded to saucy on 2013-09-02 (12 days ago)
  dmi.bios.date: 12/18/2007
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 080014
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: To be filled by O.E.M.
  dmi.board.vendor: To be filled by O.E.M.
  dmi.board.version: To be filled by O.E.M.
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080014:bd12/18/2007:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnTobefilledbyO.E.M.:rnTobefilledbyO.E.M.:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.

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