Lock Order Reversal on 7.0-STABLE with pf and ipfw / dummynet (traces)

[Max Laier]

Hi Alex,

On Saturday 22 March 2008 11:29:33 Alex Popa wrote:
> Sorry for the big delay, but here are the traces you requested.

don't worry, you are a great help!

Could you try the attached patch?  I missed the fact that you are using 
FASTROUTE in your setup.  There is obviously a problem with it, but the 
attached patch should work around that.  The other LOR really is harmless 
and rather an oversight in WITNESS: a LOR with a shared/read lock can't 
cause a deadlock (unless there is also a LOR with the same lock in 
exclusive mode).  But this is rather complex to check and might not be 
easily implemented in WITNESS.

Anyways - I believe this patch should work around your problem.  Let us 
know your findings - thanks.

-- 
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