[PATCH] NOMMU: Check VMA protections

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Check the VMA protections in get_user_pages() against what's being asked.

This checks to see that we don't accidentally write on a non-writable VMA or
permit an I/O mapping VMA to be accessed (which may lack page structs).

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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David Howells 2006-09-27 01:50:18 -07:00 • committed by Linus Torvalds

parent 910e46da4b

commit 7b4d5b8b39

1 changed files with 25 additions and 5 deletions

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mm/nommu.c

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