kern/164957: Linux emulation freezes machine after heavy usage of cpu and memory

[Michael Pounov]

>Number:         164957
>Category:       kern
>Synopsis:       Linux emulation freezes machine after heavy usage of cpu and memory
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Feb 10 12:40:15 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Michael Pounov
>Release:        FreeBSD 9.0-STABLE
>Organization:
ELWIX
>Environment:
FreeBSD misho.batmbg.com 9.0-STABLE FreeBSD 9.0-STABLE #1: Thu Feb  9 09:59:10 EET 2012     root at misho.batmbg.com:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
Linux emulation freezes machine after heavy usage of cpu and memory

After randomly time, since begin cross-compiling within linux emulation environment. Machine totally freeze. I not see any kind of useful clues like memory dumps or entering into internal kernel debug DDB* ...

(* remark:: I configured dump device and ddb kernel support ;-))

P.S. Products of Wind River with which I work has not native support for FreeBSD.
This problem is important for me! I worked from many time like that and after upgrade from FreeBSD-8 to FreeBSD-9 I faced with this strange problem ...

>How-To-Repeat:
Compile into linux emulation some big source tree or I guess to see similar result when you get all physical memory and cpu time. 

>Fix:
Fast workaround:

Install virtualbox or qemu. Install inside it some linux distribution.
Export your home directory through NFS and mount from linux distro home dir ;)
And all your further linux related tasks you should execute into linux guest :>

That is fast and ugly workaround solution ... :):)


>Release-Note:
>Audit-Trail:
>Unformatted: