Re: [PATCH] vfs: fix IMA lockdep circular locking dependency

[Eric Paris]

On Tue, May 15, 2012 at 8:37 PM, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> It does change some things, like say that "->mmap_file()" is only ever
> called for actual files, not for anonymous mappings. It doesn't seem
> to be sensible to have a security model for anonymous mappings -
> there's nothing there to really target. Whatever.

So we would have no checks for anonymous mappings?  We actually do
have some controls around them today

http://www.akkadia.org/drepper/selinux-mem.html

It's mostly around W+X memory.  (or was W now X memory)

Admittedly with the growing prevalence of JiT stuff we are using those
protections less and less and less....

Not certain how happy some will be to see them completely disappear....
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