[issue599] 1.9.0 reproducable panic
dillon at apollo.backplane.com
Wed Apr 11 15:53:26 PDT 2007
:On Wed, Apr 11, 2007 at 11:38:48AM -0700, Matthew Dillon wrote:
:> Woa. You mean the panic occurs only when you do the netstat -an comm=
:> under heavy network load? It doesn't happen any other time?
:Correct. Once I execute "netstat -an" it panics. Any ideas?
That's really odd. I looked at the code and found one possible
place where the field could get out of whack. Try turning off the
tcp limited transmit code:
and reboot to clean out any preexisting tcp connections (or otherwise
clean them out manually by killing and restarting the services).
I'm a bit at a loss a to why netstat -an would trigger the problem,
though. We do know that anything that accesses /dev/kmem heavily,
like fstat, can crash the machine while chasing down stale pointers
in kernel memory. But this panic seems a bit at odds with the sort
of crash I would expect from stale pointer chasing.
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