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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

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

** Tags added: regression-release

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

Title:
  crash on utopic ec2 instance

Status in “linux” package in Ubuntu:
  Confirmed

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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