Date: Thu, 22 Mar 2018 17:15:43 +0100 From: Olivier Houchard <cognet@ci0.org> To: Adrian Chadd <adrian@freebsd.org> Cc: "Andrey V. Elsukov" <bu7cher@yandex.ru>, FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: crash with ipfw nat on mips32 Message-ID: <20180322161543.GA66967@ci0.org> In-Reply-To: <CAJ-VmomPx8WCiR4KaBYa8ecwnF3c9Bw-kY9FjwXuP=EHayastA@mail.gmail.com> References: <CAJ-Vmok5G93o4O6Ltb6qiGOKZ=LuxD4YDzvh_tXqmK1XYn%2BiQQ@mail.gmail.com> <f51a9986-d577-649e-d781-28d0f4d06a1d@yandex.ru> <CAJ-Vmok_kpLj6gjR8ScJAT5ySf_p9746g7T%2B8vZwSgyL0G2mrg@mail.gmail.com> <70a569db-fa82-f2f6-61ea-a0d1a3dd9dae@yandex.ru> <20180322130002.GA65574@ci0.org> <CAJ-VmonWadQgk7bWcM9ngWruB=2JaV1AW0-geOYEhpiRvZ9gWQ@mail.gmail.com> <CAJ-VmomPx8WCiR4KaBYa8ecwnF3c9Bw-kY9FjwXuP=EHayastA@mail.gmail.com>
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On Thu, Mar 22, 2018 at 09:09:37AM -0700, Adrian Chadd wrote: > oh and xcompiled with gcc-6.x . > > I'm not very knowledgable with mips. Is it possible gcc wrongly generated an instruction that is not supported by mips74k ? I suppose not, or it wouldn't lead to a TLB miss. Olivier > > On 22 March 2018 at 09:09, Adrian Chadd <adrian@freebsd.org> wrote: > > I dunno yet; this is a very embedded mips74k box. :) > > > > > > -a > > > > On 22 March 2018 at 06:00, Olivier Houchard <cognet@ci0.org> wrote: > >> 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
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