Hi,

Carsten Haitzler (The Rasterman) <[email protected]> wrote:

> On Wed, 3 May 2017 12:09:21 +0900 Florian Schaefer <[email protected]> said:

> > Hi!
> > 
> > On 03.05.2017 10:04, Carsten Haitzler (The Rasterman) wrote:
> > > On Tue, 02 May 2017 21:16:40 +0900 [email protected] said:
> > > 
> > >> Hi,
> > >>
> > >> I got the source of kernel 4.11, then comipled, and check the
> > >> behaviour of enlightenment (efl 1.18.1, enlightment 0.21.7).
> > >>
> > >> At the start up of enlightenment, I got an error message;
> > >>
> > >>  There was an error trying to set the cpu power state setting via the
> > >>  module's setfreq utility.
> > >>
> > >> On the kernel 4.10.x, I never see such a message.
> > >>
> > >> And, I tried to use su and sudo command in the terminal, I got a
> > >> strange message;
> > >>
> > >> fulwood@linux-uw5l:~> sudo
> > >> sudo: effective uid is not 0, is sudo installed setuid root
> > >>
> > >> fulwood@linux-uw5l:~> su
> > >> Password:
> > >> su: incorrect password
> > >>
> > >> This means, there is a problem concerning uid treatment in the
> > >> enlightenment, doesn't it.
> > >>
> > >> Moreover, VirtualBox indicate the problem of enlightenment directly;
> > >>
> > >> fulwood@linux-uw51:~> VirtualBox
> > >>
> > >> VirtualBox: Error -10 in SUPRHardenedMain!
> > >> VirtualBox: Effective UID is not root (euid=1000, egid=100, uid=1000,
> > >>             gid=100)
> > >> VirtualBox: Tip! It may help to reintall VirtualBox.
> > >>
> > >> Why does uid=1000?
> > > 
> > > that's a common uid to start with for users added to a system - first user
> > > added commonly is uid 1000... that's probably ... you.
> > > 
> > >> So, we can't use enlightenment on the kernel 4.11.
> > > 
> > > from the above it seems like since you compiled your own kernel it 
> > > seemingly
> > > has disabled setuid root binaries. i assume this is some new feature of
> > > kernels since 4.11 that has been turned on. i suggest you turn it off to
> > > allow them again. your kernel broke far more than enlightenment. it broke
> > > sudo. probably even broke su. it broke virtualbox... it broke stuff. what
> > > that option is - i don't know. this is news to me.
> > 
> > Just for the record I'd like to add that I observe the same behavior.
> > 
> > Since switching from 4.9 to 4.11 yesterday I cannot do suid requiring
> > operations (like su or mount.cifs) from within E (using terminology or
> > xterm) any more. Interestingly, if I am right at the console (so no Xorg
> > and e in-between) all those commands work like a charm.
> > 
> > I could not find any setuid related option in the kernel configuration
> > so I cannot really imagine where it is misconfigured.

> it'll likely be some security option that ends up doing this for child
> processes ... whatever/however it is... but its certainly a change in the
> kernel and "security options" of some sort.

But, why the kernel's change has an impact on enlightenment only?
On e16 and kde-plasma, no impact.

Thanks,

Fulwood

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