Re: [Qemu-devel] QEMU refusing to die on FreeBSD host

[Juergen Lock]

On Sun, Apr 06, 2008 at 12:55:39AM -0400, Jake Myers wrote:
> Hello,
> 
> On FreeBSD 7-STABLE, qemu refuses to exit even after the window is closed. 
> It is stuck so badly that even kill -9 fails to stop it. I looked in top to 
> see what it was doing that would cause it to lock so badly:
> 
> PID USERNAME    THR PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
> 34859 root          1  -8   20   433M   416M devdrn   9:49  0.00% qemu
> 
> I believe the problem is that qemu for some reason refuses to stop trying 
> to use the kqemu device.
> 
> I am running the latest qemu (0.9.1). I can provide a backtrace on request 
> (I'm really busy right now with other things, so I didn't have time to 
> attach one).

Yeah this looks like its the same FreeBSD 7.x/SMP issue that I already
got reports of (refcount problem, similar to what has already been fixed
once, only this time it seems to be a race...)

 If it is, you should be able to work around it by using an uniprocessor
host kernel until a fix is known.

 Sorry...
        Juergen