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Date: Fri, 15 Apr 2016 16:20:14 +0300
From: Konstantin Belousov <kostikbel@gmail.com>
To: Paul Wootton <freebsd@caspersworld.co.uk>
Cc: Freebsd-current@freebsd.org
Subject: Re: Kernel trap when booting inside VirtualBox
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On Fri, Apr 15, 2016 at 02:06:43PM +0100, Paul Wootton wrote:
> On Wed, Apr 12, 2016 at 11:01PM, Paul Wootton wrote:
> >On Tue, Apr 12, 2016 at 02:02PM, Paul Wootton wrote:
> >
> >With the help of Konstantin, I have got a proper disassembly.
> >
> >I have recompiled a few times so my new panic is
> >instruction pointer     = 0x20:0xffffffff80fed2d9
> >stack pointer           = 0x28:0xffffffff824d89c0
> >frame pointer           = 0x28:0xffffffff824d8a40
> >code segment            = base 0x0, Limit 0xfffff, type 0x1b
> >                        = DPL 0, pres 1, long 1, def32 0, gran 1
> >Processor eflags        = resume, IOPL = 0
> >Current process         = 0 (swapper)
> >[ thread pid 0 tid 100000 ]
> >Stopped at      native_lapic_setup+0x99:         lesl    %edx,%esp
> >
> >and a disassembly gives
> >0xffffffff80fed2d9 <native_lapic_setup+153>:    (bad)  0x99 == 153
> >
> >Now to figure out why I am making bad binaries.
> >Ive not seen any issues yet with the world, so its not as if every binary I
> >make is bad
> 
> I have found that having CPUTYPE?=native in /etc/make.conf was my issue.
> Commenting that line out (the only other line I have is KERNCONF) and now I
> can build a good kernel
I think there is something to look at by clang people.