BUG: soft lockup - CPU#1 stuck for 61s! [kvm:19760]; RIP: 0010:[<ffffffffa0482ee0>] [<ffffffffa0482ee0>] kvm_write_guest_time+0x180/0x1b0 [kvm]
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Incomplete
|
High
|
John Johansen |
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/
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-
Regression: Yes
Reproducible: No
ProcVersionSign
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/
/dev/snd/
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,
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.
CheckboxSubmission: 23f39d583e28959
CheckboxSystem: d00f84de8a55581
Date: Tue Apr 6 18:06:40 2010
EcryptfsInUse: Yes
Frequency: multiple times per day.
HibernationDevice: RESUME=
MachineType: Dell Inc. Inspiron 1721
ProcCmdLine: BOOT_IMAGE=
ProcEnviron:
LC_TIME=en_DK.utf8
PATH=(custom, no user)
LANG=en_US.utf8
SHELL=/bin/bash
RelatedPackageV
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.
dmi.product.name: Inspiron 1721
dmi.sys.vendor: Dell Inc.
tags: | added: intel32 |
tags: | added: kernel-core kernel-reviewed |
tags: | added: acpi-bad-address |
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
tags: | removed: regression-potential |
summary: |
- running KVM almost always hard-freezes the host + BUG: soft lockup - CPU#1 stuck for 61s! [kvm:19760]; RIP: + 0010:[<ffffffffa0482ee0>] [<ffffffffa0482ee0>] + kvm_write_guest_time+0x180/0x1b0 [kvm] |
tags: |
added: kernel-bug removed: intel32 |
John-
This sounds like a fairly serious kvm issue. What more would you need from Carlos to triage this?