This may be the same thing we are seeing on OpenStack compute nodes
since upgrade. Hard crash, no output to logs, local console occasionally
shows a kernel panic ending with Fatal Exception in Interrupt, shutting
down CPU's.
We are seeing this reliably across 10 nodes which have been upgraded,
and it doesn't happen on other nodes which are all running
3.13.0-62-generic.
Have tried downgrading QEMU to 2.0, and OpenVswitch to
2.0.2-0ubuntu0.14.04.2, neither of which stop the problem happening.
Hardware has also been stress tested and no memory or CPU issues.
Still trying to find a reliable recreate, but seems to be connected with
live migrations happening on other machines, where the node that crashes
is hosting virtual instances on the same virtual networks on which the
migration is happening.
** Attachment added: "Screen Shot 2016-01-21 at 05.15.02.png"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1535088/+attachment/4553994/+files/Screen%20Shot%202016-01-21%20at%2005.15.02.png
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https://bugs.launchpad.net/bugs/1535088
Title:
Linux Generic Kernel x -43
Status in linux package in Ubuntu:
Invalid
Bug description:
kernel panic - not syncing : fatal exception in interrupt. shutting down cpus
with NMI drm_kms_helper : panic occurred, switching back to text console.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-74-generic 3.13.0-74.118
ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30
Uname: Linux 3.13.0-74-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC1: omniedge 2249 F pulseaudio
/dev/snd/controlC0: omniedge 2249 F pulseaudio
CurrentDesktop: Unity
Date: Sun Jan 17 08:22:29 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-01-29 (353 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64
(20140722.2)
MachineType: Dell Inc. Inspiron 3542
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-74-generic
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-74-generic N/A
linux-backports-modules-3.13.0-74-generic N/A
linux-firmware 1.127.19
SourcePackage: linux
StagingDrivers: rts5139
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
dmi.bios.date: 11/14/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.name: 02RD2H
dmi.board.vendor: Dell Inc.
dmi.board.version: A05
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias:
dmi:bvnDellInc.:bvrA05:bd11/14/2014:svnDellInc.:pnInspiron3542:pvrNotSpecified:rvnDellInc.:rn02RD2H:rvrA05:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron 3542
dmi.product.version: Not Specified
dmi.sys.vendor: Dell Inc.
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