Comment 0 for bug 546458

When stress testing eucalyptus we have run into this oops inside VMs
[ 82.907577] BUG: unable to handle kernel NULL pointer dereference at 0000000000000358^M
[ 82.908842] IP: [<ffffffff813982e8>] sym_int_sir+0x2a8/0x750^M
[ 82.909773] PGD 0 ^M
[ 82.910110] Thread overran stack, or stack corrupted^M
[ 82.910870] Oops: 0000 [#1] SMP ^M
[ 82.911407] last sysfs file: /sys/devices/virtual/block/ram9/uevent^M

We launched 18 instances, 2 of them failed this way. The instances run with 192M of memory. With 6 VM launches on a single node all at the same time the host is under heavy load.

This occurred in 20100323 lucid x86_64 uec-image instance.

ProblemType: Bug
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
AplayDevices: Error: [Errno 2] No such file or directory
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
CurrentDmesg:

Date: Wed Mar 24 22:06:32 2010
DistroRelease: Ubuntu 10.04
Frequency: Once a day.
Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Bochs Bochs
Package: linux-image-2.6.32-16-virtual 2.6.32-16.25
PciMultimedia:

ProcCmdLine: root=/dev/sda1 console=ttyS0
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: User Name 2.6.32-16.25-server
Regression: No
Reproducible: No
SourcePackage: linux
TestedUpstream: No
Uname: Linux 2.6.32-16-server x86_64
dmi.bios.date: 01/01/2007
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2007:svnBochs:pnBochs:pvr:cvnBochs:ct1:cvr:
dmi.product.name: Bochs
dmi.sys.vendor: Bochs