panic: mutex tcp owned at /usr/src/sys/netinet/tcp_input.c:2475

Attilio Rao attilio at
Tue May 15 09:41:34 UTC 2007

Stefan Bethke wrote:
> Am 14.05.2007 um 10:05 schrieb Kris Kennaway:
>> On Mon, May 14, 2007 at 09:57:13AM +0200, Stefan Bethke wrote:
>>> OK, got it. However, it's a bit more than I'm willing to hand-
>>> transcribe :-)
>>> Any way of saving this info without a serial console or a digital
>>> camera?
>>> I'll try to get a serial port the next couple of days...
>> I think ktrdump can operate on a core.
> Sorry, the first file was truncated. For the benefit of the list, I've 
> uploaded it here:

Hello Stefan,
thanks a lot for your effort, I've seen exactly what I expected (a 
leaked recursion on 0xffffff002ae8dbd8 mutex (that I suspect is "TCP").
Since none of us can do on-line debugging in your machine, can you 
please download that patch, apply it, recompile your kernel and doing 
these tests again?:

It will give a good understanding of where the recursion happens and 
where probabilly expected unrecursion fails.


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