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+
+kernel NULL pointer in -virtual (-server) kernel
+
+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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