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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 1568532

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

** Tags added: trusty

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https://bugs.launchpad.net/bugs/1568532

Title:
  Ubuntu kernel 3.13.0-85-generic locks with VirtualBox 5.0.14

Status in linux package in Ubuntu:
  Incomplete

Bug description:
    affects ubuntu

  The kernel 3.13.0-85 locks with Virtual Box 5.0.14. After the lock,
  keyboard and mouse are completely unresponsive and screen is frozen. The
  problem started with 3.13.0-83-generic, and does not happen with kernel
  3.13.0-79-generic.

  Unfortunately I was not able to capture dmesg for any of the official
  kernel locks, but I was able to capture it for a kernel I compiled
  (which uses 3.13.8-83 as its base). The kernel I compiled has minimal
  changes to drivers/usb/core/quirks.c, which are necessary for some tests
  I do, and uses the exact same configuration file as the official kernel.
  Just after booting the kernel I compiled and before doing any tests, I
  noticed the strange Virtual Box behavior and was able to capture the
  dmesg, which follows. Note, however, that both 3.13.0-83-generic and
  3.13.0-85-generic official versions kernels are locking. I am not sure
  if the lock is related to Virtual Box. I believe that the lock I saw on
  the kernel I compiled has the same cause as the locks on the official
  kernels.

  [ 357.821643] general protection fault: 0000 [#1] SMP

  [ 357.821654] Modules linked in: usb_storage(X) pci_stub(X) vboxpci(OX)
  vboxnetadp(OX) vboxnetflt(OX) vboxdrv(OX) arc4(X) md4(X) bridge(X)
  stp(X) llc(X) snd_hda_codec_hdmi(X) hid_generic(X) gpio_ich(X) hp_wmi(X)
  sparse_keymap(X) intel_rapl(X) x86_pkg_temp_thermal(X)
  intel_powerclamp(X) coretemp(X) kvm_intel(X) nvidia(POX) kvm(X)
  crct10dif_pclmul(X) crc32_pclmul(X) aesni_intel(X) aes_x86_64(X) lrw(X)
  gf128mul(X) snd_hda_codec_realtek(X) glue_helper(X) dm_multipath(X)
  ablk_helper(X) cryptd(X) scsi_dh(X) snd_usb_audio(X) usbhid(X)
  snd_usbmidi_lib(X) snd_hda_intel(X) hid(X) snd_hda_codec(X) snd_hwdep(X)
  snd_pcm(X) serio_raw(X) snd_page_alloc(X) snd_seq_midi(X)
  snd_seq_midi_event(X) snd_rawmidi(X) bnep(X) rfcomm(X) sb_edac(X)
  snd_seq(X) edac_core(X) bluetooth(X) snd_seq_device(X) snd_timer(X)
  lpc_ich(X) snd(X) drm(X) soundcore(X) wmi(X) ioatdma(X) dca(X) shpchp(X)
  mac_hid(X) parport_pc(X) ppdev(X) binfmt_misc(X) lp(X) parport(X)
  nls_utf8(X) cifs(X) fscache(X) nls_iso8859_1(X) psmouse(X) e1000e(X)
  isci(X) firewire_ohci(X) libsas(X) ahci(X) ptp(X) firewire_core(X)
  libahci(X) crc_itu_t(X) scsi_transport_sas(X) pps_core(X)

  [ 357.821751] CPU: 11 PID: 4035 Comm: EMT-3 Tainted: P OX
  3.13.11-ckt35-bcm5892 #1

  [ 357.821756] Hardware name: Hewlett-Packard HP Z620 Workstation/158A,
  BIOS J61 v03.15 05/09/2013

  [ 357.821761] task: ffff880ff0c59800 ti: ffff880fbd4b8000 task.ti:
  ffff880fbd4b8000

  [ 357.821763] RIP: 0010:[<ffffffff811a3390>] [<ffffffff811a3390>]
  kmem_cache_alloc_trace+0x80/0x1f0

  [ 357.821779] RSP: 0018:ffff880fbd4b9920 EFLAGS: 00010282

  [ 357.821782] RAX: 0000000000000000 RBX: ffff8807ff810430 RCX:
  00000000000035ad

  [ 357.821785] RDX: 00000000000035ac RSI: 00000000000080d0 RDI:
  ffff8807ff803c00

  [ 357.821788] RBP: ffff880fbd4b9958 R08: 0000000000015f00 R09:
  ffff8807ff803c00

  [ 357.821790] R10: ffffffff8131785b R11: 00007f590b480000 R12:
  0210070200160f05

  [ 357.821793] R13: 00000000000080d0 R14: 0000000000000018 R15:
  ffff8807ff803c00

  [ 357.821797] FS: 00007f5a6ae57700(0000) GS:ffff88101fca0000(0000)
  knlGS:0000000000000000

  [ 357.821800] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

  [ 357.821803] CR2: fffff880017d7159 CR3: 0000000fbdb87000 CR4:
  00000000000427e0

  [ 357.821806] Stack:

  [ 357.821808] ffff8807ff803c00 ffffffff8131785b ffff8807ff810430
  ffff880f60520700

  [ 357.821817] 0000000000000003 ffffffff8181e700 0000000000000000
  ffff880fbd4b9980

  [ 357.821823] ffffffff8131785b 0000000000000000 ffff880f60520700
  ffff880fde875bc0

  [ 357.821829] Call Trace:

  [ 357.821844] [<ffffffff8131785b>] ?
  apparmor_file_alloc_security+0x5b/0x180

  [ 357.821851] [<ffffffff8131785b>]
  apparmor_file_alloc_security+0x5b/0x180

  [ 357.821860] [<ffffffff812d9d06>] security_file_alloc+0x16/0x20

  [ 357.821869] [<ffffffff811bff80>] get_empty_filp+0x90/0x1a0

  [ 357.821875] [<ffffffff811c00ae>] alloc_file+0x1e/0xf0

  [ 357.821883] [<ffffffff811679d4>] __shmem_file_setup+0x104/0x1d0

  [ 357.821891] [<ffffffff8116a8b8>] shmem_zero_setup+0x28/0x70

  [ 357.821900] [<ffffffff811814cf>] mmap_region+0x57f/0x600

  [ 357.821906] [<ffffffff8118189e>] do_mmap_pgoff+0x34e/0x3d0

  [ 357.821912] [<ffffffff8116c29d>] vm_mmap_pgoff+0x8d/0xc0

  [ 357.821918] [<ffffffff8116c2fd>] vm_mmap+0x2d/0x40

  [ 357.821943] [<ffffffffa0545c4a>]
  rtR0MemObjLinuxDoMmap.isra.6+0x6a/0x70 [vboxdrv]

  [ 357.821961] [<ffffffffa0546a71>] rtR0MemObjNativeMapUser+0x81/0x320
  [vboxdrv]

  [ 357.821977] [<ffffffffa0544437>]
  VBoxHost_RTR0MemObjMapUserTag+0xe7/0x1b0 [vboxdrv]

  [ 357.821990] [<ffffffff810b0b7e>] ? down+0x2e/0x50

  [ 357.822005] [<ffffffff811a2cb5>] ? __kmalloc+0x55/0x230

  [ 357.822021] [<ffffffffa0545435>] ? rtR0MemAllocEx+0x185/0x260
  [vboxdrv]

  [ 357.822035] [<ffffffffa053717e>] ? supdrvIOCtl+0xb7e/0x3400
  [vboxdrv]

  [ 357.822048] [<ffffffffa0532551>] ?
  VBoxDrvLinuxIOCtl_5_0_14+0x121/0x210 [vboxdrv]

  [ 357.822058] [<ffffffff811d1470>] ? do_vfs_ioctl+0x2e0/0x4c0

  [ 357.822063] [<ffffffff811be26c>] ? vfs_write+0x15c/0x1f0

  [ 357.822075] [<ffffffff81727dc4>] ? __schedule+0x384/0x7e0

  [ 357.822081] [<ffffffff811d16d1>] ? SyS_ioctl+0x81/0xa0

  [ 357.822090] [<ffffffff8173495d>] ? system_call_fastpath+0x1a/0x1f

  [ 357.822092] Code: cd 00 00 49 8b 50 08 4d 8b 20 49 8b 40 10 4d 85 e4
  0f 84 14 01 00 00 48 85 c0 0f 84 0b 01 00 00 49 63 47 20 48 8d 4a 01 4d
  8b 07 <49> 8b 1c 04 4c 89 e0 65 49 0f c7 08 0f 94 c0 84 c0 74 b9 49 63

  [ 357.822139] RIP [<ffffffff811a3390>]
  kmem_cache_alloc_trace+0x80/0x1f0

  [ 357.822145] RSP <ffff880fbd4b9920>

  [ 357.822151] ---[ end trace faf27bff00c1b275 ]---

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