[Bug 556919] Re: running KVM almost always hard-freezes the host

[Dustin Kirkland]

John-

This sounds like a fairly serious kvm issue.  What more would you need
from Carlos to triage this?

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

** Tags added: kvm

** Description changed:

  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).
+  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
+  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
+  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
+  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: Once a day.
+ 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
+  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.

** Changed in: linux (Ubuntu)
     Assignee: (unassigned) => John Johansen (jjohansen)

-- 
running KVM almost always hard-freezes the host
https://bugs.launchpad.net/bugs/556919
You received this bug notification because you are a member of Kernel
Bugs, which is subscribed to linux in ubuntu.