freebsd stable - Jul 2006 - Frozen Processes

Hello,

Since upgrading some of our 5.4 servers to the latest 6.1-STABLE we've had
some processes stuck in the  *inp  state as listed in 'top'. Those
processes can't be killed and any resources they use up in terms of bound
IP addresses or ports can't be freed. Does anyone know what this *inp
state means or how to fix this problem?

Holt G.

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com

On Thu, 20 Jul 2006, Holtor wrote:
> Since upgrading some of our 5.4 servers to the latest 6.1-STABLE we've
had
> some processes stuck in the *inp state as listed in 'top'. Those
processes
> can't be killed and any resources they use up in terms of bound IP
addresses
> or ports can't be freed. Does anyone know what this *inp state means or
how
> to fix this problem?
Processes in state '*inp' are waiting for an inpcb lock, suggesting a
deadlock
or lock leak.  Can you compile your kernel with invariants, witness, ddb, etc, 
and do a bit of kernel debugging?  You can find basic instructions in the 
handbook; what I'm particularly interested in is the output of
"alltrace",
"show alllocks", "show allpcpu".

Robert N M Watson
Computer Laboratory
University of Cambridge