[Pkg-uml-pkgs] Bug#366915: [uml-devel] Re: Bug#366915: user-mode-linux: fails when host kernel is linux-image-2.6.16-1-k7

[Jeff Dike]

On Fri, May 12, 2006 at 10:08:06PM +0200, Mattia Dongili wrote:
> > kjournald starting.  Commit interval 5 seconds
> > EXT3-fs: mounted filesystem with ordered data mode.
> > VFS: Mounted root (ext3 filesystem) readonly.
> > mapping mmap stub failed, errno = 12
> > Kernel panic - not syncing: start_userspace : expected SIGSTOP, got status = 256

Hummmm, is this a 2G/2G host, by any chance?

The French report is complaining about this happening after a host
kernel upgrade, and I would assume that this wouldn't spring a 2G/2G
split on you without asking.

UML is trying to map a page at the top of its address space (which it
assumes to be 0xc0000000 unless you are running a 2.6.16-rc4 UML and
enabled host 2G/2G support).  We need to figure out why that doesn't
work.  If it's not the host split, then I don't have any other ideas
off the top of my head.

				Jeff