Debian server locked – find_busiest_group?

Curtis asked:

Just wondering if anyone sees any clues from the following screen shot as to what might have caused this server to lock up:

debian server crash

This server also locked up 6 months ago, and I still have the screen shot from that too:

debian server crash from six months ago

The server is running Proxmox 1.8 (which is based on Debian Lenny, but a kernel that I think comes from OpenVZ). uname output (host name masked):

Linux —— 2.6.32-4-pve #1 SMP Mon May 9 12:59:57 CEST 2011 x86_64 GNU/Linux

Does anyone see any clues based on these screen shots as to whether this is a hardware or software issue?

My answer:

This looks like a kernel divide by zero bug that was fixed in version 3.1.5. A patch is available if you want to attempt to backport it.

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