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[Bug 556919] Re: BUG: soft lockup - CPU#1 stuck for 61s! [kvm:19760]; RIP: 0010:[<ffffffffa0482ee0>] [<ffffffffa0482ee0>] kvm_write_guest_time+0x180/0x1b0 [kvm]

 

fmaste, it will help immensely if you filed a new report via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

** Attachment removed: "kern.log"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/556919/+attachment/4502386/+files/kern.log

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Title:
  BUG: soft lockup - CPU#1 stuck for 61s! [kvm:19760]; RIP:
  0010:[<ffffffffa0482ee0>]  [<ffffffffa0482ee0>]
  kvm_write_guest_time+0x180/0x1b0 [kvm]

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Happening sInce some time after beta1 (I stopped running KVM for a
  while after the beta1 tests were done). Running kvm (via testdrive)
  against the ISOs.

  Almost always my laptop will hard-freeze. The screen is still painted
  under X, but no keys work. I cannot shift to a vTerm, and cannot use
  the magic keys to release from X. SSHing from another system fails (no
  route/response to/from host). Already established SSH sessions will
  not respond.

  All in all, it really sounds like a back kernel panic. The only option
  is to cycle power, wait for fsck to finish, and start again.

  On the few times I do not get a hard-freeze, a running KVM will
  suddenly display on the terminal header "QEMU stopped". After that,
  ending this KVM run and starting a new one will have KVM unable to
  recognise the guest vdisk (just-created/formatted). Rebooting returns
  KVM to work -- until the hard-freeze.

  This has happened today about 20 times. I have been unable to find
  anything in the logs pointing to an error, so far. Will now boot the
  -16 and -18 kernels to see if it is reproducible there; will also try
  a vanilla kernel.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: linux-image-2.6.32-19-generic 2.6.32-19.28
  Regression: Yes
  Reproducible: No
  ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1
  Uname: Linux 2.6.32-19-generic x86_64
  AlsaVersion:
   Advanced Linux Sound Architecture Driver Version 1.0.22.1.
   Compiled on Apr  1 2010 for kernel 2.6.32-19-generic (SMP).
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  cerdea     3476 F.... pulseaudio
   /dev/snd/controlC0:  cerdea     3476 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'SB'/'HDA ATI SB at 0xfebfc000 irq 16'
     Mixer name	: 'SigmaTel STAC9205'
     Components	: 'HDA:838476a0,102801fd,00100204 HDA:14f12c06,14f1000f,00100000'
     Controls      : 19
     Simple ctrls  : 11
  Card1.Amixer.info:
   Card hw:1 'Pro'/'Creative Labs VF0400 Live! Cam Notebook Pro at usb-0000:00:13.4-1, full speed'
     Mixer name	: 'USB Mixer'
     Components	: 'USB041e:4061'
     Controls      : 0
     Simple ctrls  : 0
  Card1.Amixer.values:

  CheckboxSubmission: 23f39d583e289591efa3692115f3f5f2
  CheckboxSystem: d00f84de8a555815fa1c4660280da308
  Date: Tue Apr  6 18:06:40 2010
  EcryptfsInUse: Yes
  Frequency: multiple times per day.
  HibernationDevice: RESUME=UUID=4212d0ae-0265-44ed-ac84-7b7cd5669fe4
  MachineType: Dell Inc. Inspiron 1721
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-19-generic root=/dev/mapper/sys-root ro crashkernel=384M-2G:64M,2G-:128M console=tty1 security=apparmor vbe_mode=0x176
  ProcEnviron:
   LC_TIME=en_DK.utf8
   PATH=(custom, no user)
   LANG=en_US.utf8
   SHELL=/bin/bash
  RelatedPackageVersions: linux-firmware 1.33
  SourcePackage: linux
  dmi.bios.date: 04/21/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.name: 0RT951
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA07:bd04/21/2008:svnDellInc.:pnInspiron1721:pvr:rvnDellInc.:rn0RT951:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Inspiron 1721
  dmi.sys.vendor: Dell Inc.

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