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Date: Thu, 22 Mar 2018 14:00:02 +0100
From: Olivier Houchard <cognet@ci0.org>
To: "Andrey V. Elsukov" <bu7cher@yandex.ru>
Cc: Adrian Chadd <adrian@freebsd.org>, FreeBSD Net <freebsd-net@freebsd.org>
Subject: Re: crash with ipfw nat on mips32
Message-ID: <20180322130002.GA65574@ci0.org>
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On Thu, Mar 22, 2018 at 03:52:39PM +0300, Andrey V. Elsukov wrote:
> On 22.03.2018 10:31, Adrian Chadd wrote:
> > Erk. I'll go see if I can figure out what's going on.
> > 
> > Thanks! This is really quite grr-y.
> >>> Trap cause = 2 (TLB miss (load or instr. fetch) - kernel mode)
> >>> [ thread pid 11 tid 100010 ]
> >>> Stopped at      0
> >>> db> bt
> >>> Tracing pid 11 tid 100010 td 0x80673b40
> >>> dyn_expire_states+0x13c (?,?,?,?) ra c1d08f44 sp c1247c40 sz 144
> >>> dyn_tick+0x238 (0,?,?,?) ra 80214dfc sp c1247cd0 sz 120
> >>> itimer_fire+0x1440 (?,?,?,?) ra 802150c0 sp c1247d48 sz 88
> >>> softclock+0x9c (?,?,?,?) ra 0 sp c1247da0 sz 0
> >>> db>
> >>
> >> this is not NAT related, it is ipfw's dynamic states.
> >> I'm not sure, but this is seems related to ConcurrencyKit.
> 
> It looks like CK doesn't declare support for mips.
> Probably we need to make compat shim, that uses old implementation for
> platforms, that are not supported by CK.
> 

Hi,

mips should be supported by using the compiler builtins, as is riscv. If there 
is a crash, it is definitively a bug. Can you guys tell me which CK
function dies that badly ?

Regards,

Olivier