Please help me diagnose this crazy VMWare/FreeBSD 8.x crash

Bjoern A. Zeeb bzeeb-lists at
Thu May 24 22:36:04 UTC 2012

On 24. May 2012, at 13:47 , Mark Felder wrote:

> On Wed, 23 May 2012 17:30:40 -0500, Adrian Chadd <adrian at> wrote:
>> Hi,
>> can you please, -please- file a PR? And place all of the above
>> information in it so we don't lose it?
> I'd be glad to post a PR and assist in helping to get it permanently fixed. I certainly don't want this data to get lost and honestly our business uses FreeBSD on VMWare so much that we really need a permanent fix as much as anyone else :-)
> The reason I've hesitated to post a PR so far is that I didn't have any truly useful or concrete evidence of where the problem lies. After Dane Foster contacted me and told me he could recreate the crash on demand with his workload it was easier to narrow things down. The suggestion that it was an interrupts issue (by possibly Bjoern Zeeb?) 

Just for the public archives.  Interrupts wasn't me.   I might have mentioned disabling cdrom and fdc as good as possible but everything else I cannot remember...

> and Dane's discovery that his crashes ceased when em0 and mpt0 share an IRQ, but em0 is completely unused was starting to prove there is some strong evidence here in favor of the interrupts issue.
> Dane, what's the status on your end? Has your fix still been successful? Is it also stable if you simply set hint.mpt.0.msi_enable="1" ?

Bjoern A. Zeeb                                 You have to have visions!
   It does not matter how good you are. It matters what good you do!

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