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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Did this issue start happening after an update/upgrade? Was there a
kernel version where you were not having this particular problem? This
will help determine if the problem you are seeing is the result of the
introduction of a regression, and when this regression was introduced.
If this is a regression, we can perform a kernel bisect to identify the
commit that introduced the problem.


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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

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https://bugs.launchpad.net/bugs/1216294

Title:
  kernel 3.11.0-3-generic BUG: unable to handle kernel paging request

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Ubuntu 13.10 kernel Oops at boot. Machine is a virtual KVM guest on a
  Debian host.

  Linux ubuntu1310 3.11.0-3-generic #8-Ubuntu SMP Fri Aug 23 16:52:37
  UTC 2013 i686 i686 i686 GNU/Linux

  
  dmesg:
  #####

  [    7.971731] BUG: unable to handle kernel paging request at d8011a00
  [    7.971850] IP: [<c104c05b>] kmap_atomic_prot+0x1b/0x100
  [    7.971998] *pdpt = 0000000001a56001 *pde = 0000000000000000
  [    7.972035] Oops: 0000 [#1] SMP
  [    7.972035] Modules linked in: serio_raw(F) i2c_piix4 soundcore(F) ppdev(F) pvpanic rfcomm bnep parport_pc(F) bluetooth mac_hid lp(F) parport(F) ext2(F) hid_generic usbhid hid floppy(F)
  [    7.972035] CPU: 0 PID: 467 Comm: apparmor_parser Tainted: GF            3.11.0-3-generic #8-Ubuntu
  [    7.972035] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
  [    7.972035] task: d4433380 ti: d44c0000 task.ti: d44c0000
  [    7.972035] EIP: 0060:[<c104c05b>] EFLAGS: 00010202 CPU: 0
  [    7.972035] EIP is at kmap_atomic_prot+0x1b/0x100
  [    7.972035] EAX: d44c0000 EBX: d44c1e28 ECX: 80000000 EDX: 00000163
  [    7.972035] ESI: d8011a00 EDI: 00000010 EBP: d44c1de8 ESP: d44c1dd8
  [    7.972035]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
  [    7.972035] CR0: 80050033 CR2: d8011a00 CR3: 13936000 CR4: 000006f0
  [    7.972035] Stack:
  [    7.972035]  d4d18000 d44c1e28 00000ff0 00000010 d44c1df0 c104c159 d44c1e08 c12be770
  [    7.972035]  00000000 00000000 d6c0eac0 d7cfd000 d44c1e10 c12be7e2 d44c1e1c c12bef73
  [    7.972035]  d6c13e00 d44c1e4c c12bf66e 00008ec9 d44c1000 00000010 00000000 d8011a00
  [    7.972035] Call Trace:
  [    7.972035]  [<c104c159>] kmap_atomic+0x19/0x20
  [    7.972035]  [<c12be770>] hash_walk_next+0x30/0x60
  [    7.972035]  [<c12be7e2>] hash_walk_new_entry+0x42/0x50
  [    7.972035]  [<c12bef73>] crypto_hash_walk_first_compat+0x33/0x40
  [    7.972035]  [<c12bf66e>] shash_compat_update+0x1e/0x50
  [    7.972035]  [<c12b659e>] aa_calc_profile_hash+0x11e/0x160
  [    7.972035]  [<c12ae88e>] aa_unpack+0x35e/0xb90
  [    7.972035]  [<c12a8080>] ? profile_remove+0x50/0x50
  [    7.972035]  [<c12ad443>] aa_replace_profiles+0x33/0x9d0
  [    7.972035]  [<c1146c98>] ? vmalloc+0x38/0x40
  [    7.972035]  [<c12fb8ac>] ? _copy_from_user+0x2c/0x40
  [    7.972035]  [<c12a8080>] ? profile_remove+0x50/0x50
  [    7.972035]  [<c12a80b5>] profile_replace+0x35/0x50
  [    7.972035]  [<c11694bd>] vfs_write+0x9d/0x1b0
  [    7.972035]  [<c1169b69>] SyS_write+0x49/0x90
  [    7.972035]  [<c163ce8d>] sysenter_do_call+0x12/0x28
  [    7.972035] Code: 0b eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 90 55 89 e5 57 56 53 83 ec 04 3e 8d 74 26 00 89 c6 89 e0 25 00 e0 ff ff 83 40 14 01 <8b> 06 c1 e8 1e 69 c0 40 03 00 00 05 40 92 95 c1 2b 80 0c 03 00
  [    7.972035] EIP: [<c104c05b>] kmap_atomic_prot+0x1b/0x100 SS:ESP 0068:d44c1dd8
  [    7.972035] CR2: 00000000d8011a00
  [    7.972035] ---[ end trace 8b400beaed908bb0 ]---
  [    7.972035] note: apparmor_parser[467] exited with preempt_count 1
  [    7.995943] BUG: scheduling while atomic: apparmor_parser/467/0x10000001
  [    7.999156] Modules linked in: serio_raw(F) i2c_piix4 soundcore(F) ppdev(F) pvpanic rfcomm bnep parport_pc(F) bluetooth mac_hid lp(F) parport(F) ext2(F) hid_generic usbhid hid floppy(F)
  --- 
  ApportVersion: 2.12.1-0ubuntu2
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  testuser   2664 F.... lxpanel
  CRDA: Error: [Errno 2] No such file or directory
  DistroRelease: Ubuntu 13.10
  HibernationDevice: RESUME=/dev/mapper/ubuntu1310--vg-swap_1
  InstallationDate: Installed on 2013-07-25 (29 days ago)
  InstallationMedia: Lubuntu 13.10 "Saucy Salamander" - Alpha i386 (20130725)
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  Lsusb:
   Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd 
   Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: Bochs Bochs
  MarkForUpload: True
  Package: linux 3.11.0.3.4
  PackageArchitecture: i386
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-3-generic root=/dev/mapper/hostname--vg-root ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.11.0-3.8-generic 3.11.0-rc6
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-3-generic N/A
   linux-backports-modules-3.11.0-3-generic  N/A
   linux-firmware                            1.113
  RfKill:
   
  StagingDrivers: zram
  Tags:  saucy staging
  Uname: Linux 3.11.0-3-generic i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  dmi.bios.date: 01/01/2011
  dmi.bios.vendor: Bochs
  dmi.bios.version: Bochs
  dmi.chassis.type: 1
  dmi.chassis.vendor: Bochs
  dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnBochs:pnBochs:pvr:cvnBochs:ct1:cvr:
  dmi.product.name: Bochs
  dmi.sys.vendor: Bochs

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