Re: [PATCH 1/2] LSM: Do not apply mmap_min_addr check to PROT_NONE

[Roland McGrath]

> Since mmap_min_addr is used to prevent a *malicious* process from maping the
> zero page and then taking advantage of a user-pointer dereference in the
> *kernel code*, I do not see what you gain by guaranteeing that the
> application *that you control* would never exploit such a vulnerability?

The application does sandboxing of untrusted code.
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