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I have a VM running in Virualbox 3.2 on Debian 5. The host has 2 drives in raid 1. In the last 5 times the checkarray ran the vm crashed 4 times. Every single time right after mdadm finished checking /dev/md0 (root partition) and started checking /dev/md1 (the swap partition)

2 of the times Virtualbox crashed with the following entries in syslog:

[5315109.837520] VBoxHeadless[20377] general protection ip:7fd6b98856d3 sp:416f7510 error:0 in libc-2.7.so[7fd6b9810000+14a000]
[8342681.483222] VBoxHeadless[32614] general protection ip:7f83f4afedd4 sp:40e7ec90 error:0 in libc-2.7.so[7f83f4a89000+14a000]

The other two the VM just locked up.

Currently as a workaround I have disabled the checkarray cronjob.

Has anyone encountered this? What can be the cause?

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It sounds like a bug in virtualbox itself. A virtual machine shouldn't crash on such an operation. Considering you can reproduce it 3/4 of the time you should submit a bug report to oracle (looks like they own virtualbox).

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