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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1355891

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

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

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https://bugs.launchpad.net/bugs/1355891

Title:
  crash on utopic ec2 instance

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Launched an instance on ec2.
  Instance actually seems moderately fine, but then trying to create a bridge directly or indirectly will fail.
  by indirectly, I mean:

  $ sudo apt-get update -qy
  $ sudo apt-get install lxc --assume-yes --quiet

  $ sudo initctl status lxc-net
  lxc-net stop/waiting
  $ sudo cat /var/log/upstart/lxc-net.log 
  add bridge failed: Package not installed
  Missing bridge support in kernel
  lxc-net stop/pre-start, process 4453
  add bridge failed: Package not installed
  Missing bridge support in kernel
  lxc-net stop/pre-start, process 4509

  dmesg shows:
  [8772678.887956] ------------[ cut here ]------------^M
  [8772678.887979] WARNING: CPU: 0 PID: 97 at /build/buildd/linux-3.16.0/mm/vmalloc.c:128 vmap_page_range_noflush+0x2a9/0x340()^M
  [8772678.887987] Modules linked in:^M
  [8772678.887995] CPU: 0 PID: 97 Comm: systemd-udevd Not tainted 3.16.0-7-generic #12-Ubuntu^M
  [8772678.888002]  0000000000000009 ffff88000316bb88 ffffffff81776c3f 0000000000000000^M
  [8772678.888011]  ffff88000316bbc0 ffffffff8106fced ffffffffc03a6000 0000000000000000^M
  [8772678.888019]  ffff880003b95d08 ffff8800032db340 ffffffffc03a1000 ffff88000316bbd0^M
  [8772678.888028] Call Trace:^M
  [8772678.888038]  [<ffffffff81776c3f>] dump_stack+0x45/0x56^M
  [8772678.888049]  [<ffffffff8106fced>] warn_slowpath_common+0x7d/0xa0^M
  [8772678.888063]  [<ffffffff8106fdca>] warn_slowpath_null+0x1a/0x20^M
  [8772678.888069]  [<ffffffff811a5d39>] vmap_page_range_noflush+0x2a9/0x340^M
  [8772678.888076]  [<ffffffff811a5dfe>] map_vm_area+0x2e/0x40^M
  [8772678.888081]  [<ffffffff811a74d0>] __vmalloc_node_range+0x200/0x290^M
  [8772678.888093]  [<ffffffff810f1214>] ? module_alloc_update_bounds+0x14/0x70^M
  [8772678.888103]  [<ffffffff810f1214>] ? module_alloc_update_bounds+0x14/0x70^M
  [8772678.888112]  [<ffffffff81052344>] module_alloc+0x74/0xd0^M
  [8772678.888118]  [<ffffffff810f1214>] ? module_alloc_update_bounds+0x14/0x70^M
  [8772678.888125]  [<ffffffff810f1214>] module_alloc_update_bounds+0x14/0x70^M
  [8772678.888132]  [<ffffffff810f1a22>] layout_and_allocate+0x7a2/0xcc0^M
  [8772678.888139]  [<ffffffff810f2013>] load_module+0xd3/0x1b40^M
  [8772678.888150]  [<ffffffff811df764>] ? vfs_read+0x124/0x180^M
  [8772678.888157]  [<ffffffff811e52e8>] ? kernel_read+0x48/0x60^M
  [8772678.888163]  [<ffffffff810ef8c1>] ? copy_module_from_fd.isra.45+0x111/0x170^M
  [8772678.888171]  [<ffffffff810f3bf6>] SyS_finit_module+0x86/0xb0^M
  [8772678.888183]  [<ffffffff8177ecad>] system_call_fastpath+0x1a/0x1f^M
  [8772678.888189] ---[ end trace ec3e769b378024cb ]---^M

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-7-generic 3.16.0-7.12
  ProcVersionSignature: User Name 3.16.0-7.12-generic 3.16.0
  Uname: Linux 3.16.0-7-generic x86_64
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.14.5-0ubuntu4
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  CRDA: Error: [Errno 2] No such file or directory: 'iw'
  CurrentDmesg:
   [8772762.247790] systemd-logind[1405]: New seat seat0.
   [8772762.254049] systemd-logind[1405]: Failed to start unit user@1000.service: Unknown unit: user@1000.service
   [8772762.254068] systemd-logind[1405]: Failed to start user service: Unknown unit: user@1000.service
   [8772762.258380] systemd-logind[1405]: New session 1 of user ubuntu.
  Date: Tue Aug 12 15:05:48 2014
  Ec2AMI: ami-1697457e
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: us-east-1e
  Ec2InstanceType: m1.small
  Ec2Kernel: aki-919dcaf8
  Ec2Ramdisk: unavailable
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
  Lspci:
   
  Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99
  PciMultimedia:
   
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB:
   
  ProcKernelCmdLine: root=LABEL=cloudimg-rootfs ro console=hvc0
  ProcModules:
   
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-7-generic N/A
   linux-backports-modules-3.16.0-7-generic  N/A
   linux-firmware                            N/A
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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