Re: [uml-devel] 2.6.14-rc1 x86 on 2.6.13.1 amd64 host: guest segfaults

[antoine <antoine@nagafix.co.uk>]

On Thu, 2005-09-15 at 15:06 -0400, Jeff Dike wrote:
> On Thu, Sep 15, 2005 at 06:05:51PM +0100, Antoine Martin wrote:
> > I tried mode=skas0 but it seems to always default to TT.
> > Or has this not been merged in mainline yet?
> 
> It's in mainline.  What's the guest?
2.6.14-rc1

> > **
> > And here is a amd64 guest:
> > (This trace was much much longer)
> 
> Did this one come up in skas0 or tt mode?
I think it was tt (will check tomorrow on that box)
As I said above, it seems to always use TT, ignoring mode=skas0

> > Another weirdness, this command line works:
> > # ./kernel64 root=/dev/ubda mem=256M ubd0=./root_fs64
> > eth0=tuntap,tap0,FE:F0:00:00:00:01,10.0.0.254 eth1=pcap,eth0
> > console0=fd:0,fd:1 umid=1
> 
> What's with the console* business?  The switch is "con".
DOH Can't trust my memory! That's why I try to use scripts..

> > But this one does not:
> > # ./kernel64 root=/dev/ubda mem=256M ubd0=./root_fs64
> > eth0=tuntap,tap0,FE:F0:00:00:00:01,10.0.0.254 eth1=pcap,eth0
> > console0=fd:0,fd:1 console=pty umid=1 gentoo=nodevfs nodevfs selinux=1
> > enforcing=0
> > With this one it crashes after checking for PROT_EXEC.
> > Is this to do with command line size limitations?
> 
> Maybe, but it probably shouldn't crash.
Yep, it isn't even that big.
> 
> > write(3, "1126803520:  *** terminating.\n", 30) = 30
> 
> This bit seems relevent - were there any syscall failures above that?
What I am looking for?
I could just drop the full log on a public server if that helps.

Antoine



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