Re: Hang on large copy_from_user with PREEMPT_NONE

[Rusty Russell]

Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes:
> Alternatively, we could just limit module loading size to some (fairly
> arbitrary) big number.

Yeah, we used to do that because vmalloc would BUG rather than
returning NULL.

But you're already CAP_SYS_MODULE in this path, which kind of makes it
hard to care very much about it being slow under virtualization.

Cheers,
Rusty.
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