Russell King 1ee5e87f86 ARM: fix get_user_pages_fast
Ensure that get_user_pages_fast() is not able to access memory which
has been mapped with PROT_NONE.

Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2017-11-21 14:45:36 +00:00
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