Re: chroot/aarch64 issues

[Efraim Flashner]

On Tue, Jul 05, 2016 at 04:44:15PM +0200, Ludovic Courtès wrote:
> Efraim Flashner <address@hidden> skribis:
> 
> > On Tue, Jul 05, 2016 at 10:45:51AM +0200, Ludovic Courtès wrote:
> >> Efraim Flashner <address@hidden> skribis:
> >> 
> >> > On Mon, Jul 04, 2016 at 03:37:12PM +0200, Ludovic Courtès wrote:
> >> >> Hi!
> >> 
> >> If the kernel config corresponds to this kernel, I don’t see which of
> >> the other EINVAL reasons given in clone(2) would apply.  Does ‘dmesg’
> >> show something?
> >> 
> >> Could you maybe try a C program that invokes clone(2) and progressively
> >> remove CLONE_ flags until you find the one that’s causing EINVAL?
> >> 
> >> Thanks,
> >> Ludo’.
> >
> > I grabbed the code from man 2 clone and ran that on the odroid, which
> > told me "clone: Operation not permitted"
> 
> This is expected; quoth clone(2):
> 
> --8<---------------cut here---------------start------------->8---
>  EPERM  CLONE_NEWIPC, CLONE_NEWNET, CLONE_NEWNS, CLONE_NEWPID, or 
> CLONE_NEWUTS was specified by an unprivi‐
>         leged process (process without CAP_SYS_ADMIN).
> --8<---------------cut here---------------end--------------->8---
> 
> Can you try running it as root?
> 
> Ludo’.

I should've realized something was up when I tried it with all the
options listed in the daemon and none of them worked.

address@hidden:~$ sudo ./a.out hello_world
[sudo] password for efraim:
clone() returned 10751
uts.nodename in child:  hello_world
uts.nodename in parent: odroid-jessie64
child has terminated


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