[Qemu-devel] [Bug 546458] Re: kernel NULL pointer in -virtual (-server) kernel

[Serge Hallyn]

Per comment #7, marking this invalid for qemu-kvm.

** Changed in: qemu-kvm (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/546458

Title:
  kernel NULL pointer in -virtual (-server) kernel

Status in QEMU:
  Invalid
Status in “linux” package in Ubuntu:
  Triaged
Status in “qemu-kvm” package in Ubuntu:
  Invalid
Status in “linux” package in Fedora:
  Unknown

Bug description:
  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

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