Debugging reboot with Linux emulation

[Kostik Belousov]

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.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 195 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-hackers/attachments/20080813/6d6be562/attachment.pgp