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authorJeff Dike <jdike@addtoit.com>2007-02-28 20:13:33 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-03-01 14:53:38 -0800
commit1463fdbcc797dfcb8574ababbd39cf6205f6ed00 (patch)
treed6039c743e89223ff553a2c8a64f59bc2c6cc5ca /include/asm-um
parent14251809b1921b1216568700f1be2f91a1cbb5c7 (diff)
downloadlinux-2.6.34-ux500-1463fdbcc797dfcb8574ababbd39cf6205f6ed00.tar.gz
[PATCH] uml: pte_mkread fix
Fix the fact that pte_mkread set _PAGE_RW instead of _PAGE_USER (the logic is copied from i386 in most place, so it is really as bad as you're thinking). Thus currently page tables are more permissive than they should. Such a change may trigger other latent bugs, so be careful with this. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-um')
-rw-r--r--include/asm-um/pgtable.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-um/pgtable.h b/include/asm-um/pgtable.h
index e57ff136ee5..1b1090a91a5 100644
--- a/include/asm-um/pgtable.h
+++ b/include/asm-um/pgtable.h
@@ -270,7 +270,7 @@ static inline pte_t pte_wrprotect(pte_t pte)
static inline pte_t pte_mkread(pte_t pte)
{
- pte_set_bits(pte, _PAGE_RW);
+ pte_set_bits(pte, _PAGE_USER);
return(pte_mknewprot(pte));
}