Re: [TRIVIAL] Warn users about machines with non-working WP bit

Kasper Dupont
2002-08-06T14:00:13Z

"David S. Miller" wrote:
>
> verify_area() checks aren't enough, consider a threaded application
> calling mprotect() while the copy is in progress.

Couldn't we just freeze all other processes with the same mm while
a copy_to_user is in progress?

Of course this should only be done if CONFIG_X86_WP_WORKS_OK is
not enabled, so systems with a working wp doesn't have to take a
performance hit.

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