lkml.org 
[lkml]   [2018]   [Mar]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH net-next] modules: allow modprobe load regular elf binaries
On Mon, Mar 5, 2018 at 5:34 PM, Alexei Starovoitov <ast@kernel.org> wrote:
> As the first step in development of bpfilter project [1] the request_module()
> code is extended to allow user mode helpers to be invoked. Idea is that
> user mode helpers are built as part of the kernel build and installed as
> traditional kernel modules with .ko file extension into distro specified
> location, such that from a distribution point of view, they are no different
> than regular kernel modules. Thus, allow request_module() logic to load such
> user mode helper (umh) modules via:
[,,]

I like this, but I have one request: can we make sure that this action
is visible in the system messages?

When we load a regular module, at least it shows in lsmod afterwards,
although I have a few times wanted to really see module load as an
event in the logs too.

When we load a module that just executes a user program, and there is
no sign of it in the module list, I think we *really* need to make
that event show to the admin some way.

.. and yes, maybe we'll need to rate-limit the messages, and maybe it
turns out that I'm entirely wrong and people will hate the messages
after they get used to the concept of these pseudo-modules, but
particularly for the early implementation when this is a new thing, I
really want a message like

executed user process xyz-abc as a pseudo-module

or something in dmesg.

I do *not* want this to be a magical way to hide things.

Linus

\
 
 \ /
  Last update: 2018-03-06 20:13    [W:0.195 / U:6.748 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site