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Re: nb5 panic: kernel diagnostic assertion "cv_is_valid(cv)" failed: file "/usr/nbcvs/src-5/sys/kern/kern_condvar.c", line 329 (fwd)

On Thu, Jan 22, 2009 at 12:40:59PM +0100, Hubert Feyrer wrote:
> FWIW, I got the following panic now twice, after flipping an external 
> PPPoE connectipn down & up on a machine that's connecting a LAN with an 
> IPsec-encrypted GRE-Tunnel...

How old are your sources?  There was a fix that went in late last year
to the routing code to stop it stomping random kernel memory - the bug
would cause effects like you are seeing now.  If your sources are up
to date then you could try building a kernel with MALLOCLOG defined
and see if there is anything that is consistently listed as a
neighbour if/when you get a report of data modified on the malloc free

Brett Lymn
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