Re: [PATCH v4 00/45] x86: Kernel IBT

[Peter Zijlstra]

On Tue, Mar 15, 2022 at 11:07:06AM +0100, Peter Zijlstra wrote:
> On Tue, Mar 15, 2022 at 10:00:43AM +0100, Peter Zijlstra wrote:
> > I don't seem able to run this mod_race test, it keeps saying:
> > 
> >   tgl-build# ./test_progs -v -t mod_race
> >   bpf_testmod.ko is already unloaded.
> >   Loading bpf_testmod.ko...
> >   Successfully loaded bpf_testmod.ko.
> >   Summary: 0/0 PASSED, 0 SKIPPED, 0 FAILED
> >   Successfully unloaded bpf_testmod.ko.
> > 
> > Which I'm taking to mean I'm doing it wrong... 
> 
> That.. I was building the wrong tree, mod_race comes from bpf-next and I
> was building a tree without that merged in... let me to see what it does
> now.

I can confirm, crashes without, fixed with. Thanks!

I've forced pushed a cleaned up tip/x86/core. Also:

  git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/ibt.bpf

is a merge of that and bpf-next