Re: [PATCH] tracefs: Do not allocate and free proxy_ops for lockdown

[Ben Hutchings]

On Fri, 2019-10-11 at 14:36 -0400, Steven Rostedt wrote:
> On Fri, 11 Oct 2019 11:20:30 -0700
> Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> 
> > Willing to do that instead?
> 
> Honestly, what you described was my preferred solution ;-)
> 
> I just didn't want to upset the lockdown crowd if a new tracefs file
> was opened without doing this.
> 
> Once locked down is set, can it ever be undone without rebooting?
[...]

Earlier versions of the lockdown patch set added a magic SysRq command
to turn it off.  That's not currently present upstream but there may be
plans to add it.

Ben.

-- 
Ben Hutchings
It is easier to change the specification to fit the program
than vice versa.

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