Debugging reboot with Linux emulation
kostikbel at gmail.com
Wed Aug 13 11:54:18 UTC 2008
On Wed, Aug 13, 2008 at 01:28:22PM +0200, Alexander Leidinger wrote:
> Quoting "Nate Eldredge" <neldredge at math.ucsd.edu> (from Tue, 12 Aug
> 2008 23:52:35 -0700 (PDT)):
> >Hi folks,
> >I recently tried to run a Linux binary of Maple (commercial math
> >software) on my FreeBSD 7.0-RELEASE/amd64 box, and the machine
> >rebooted. I tried it again while watching the console, and no panic
> >message appeared to be produced. Does anyone have any ideas on how
> >to debug problems of this nature? I realize I may not be able to
> >get Maple to work, but in any case the system should not die like
> >this, so I can at least try to fix that bug.
> >Incidentally, is it possible to run kdb with a USB keyboard?
> >Hitting Ctrl-Alt-Esc gives me the kdb prompt, but I can't type, so I
> >can do nothing except hit the power button. I do have
> >hint.atkbd.0.flags="0x1" in /boot/device.hints. Unfortunately I
> >don't have a PS/2 keyboard on hand, though I can try and get a hold
> >of one if all else fails.
> A guess out of my cristallball:
> That's one of the cases which happen if you run a linux program
> without branding it as a linux program first. People tend to think it
> is not needed, but in some rare circumstances it just causes what you
> see, a reboot. So go and identify all binaries (IMPORTANT: but not the
> libraries!), e.g. with the file(1), and use "brandelf -t Linux" on
> those programs.
That would be an enormous local hole, assuming an native FreeBSD binary
may cause system crash. I actually doubt that non-branded elf binary
ever start, due to unsatisfied dynamic dependencies.
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