On Wed, 2006-08-02 at 06:50 +0200, Andi Kleen wrote:
> FYI,
> 
> I tried to boot 2.6.18-rc2-mm1 on a nfsroot system with x86-64 defconfig.
> 
> Unfortunately it seems to generate lots of random EIO while reading executables 
> during the startup sequence, which causes some things to break. Writing
> also doesn't seem to work - it complains about EPERM for that.
> Not all executables error out, but at least some.
> 
> The same setup works fine with mainline 2.6.18-rc*

Known issue. The attached patch ought to fix it...

Cheers,
  Trond