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authorKees Cook <keescook@chromium.org>2014-01-23 18:54:38 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-23 19:36:57 -0500
commit3e2a4c183ace8708c69f589505fb82bb63010ade (patch)
treee201c3d60f39bbe3ba5026417d454553ad2fe073 /Documentation/x86/early-microcode.txt
parent93e9ef83f40603535ffe6b60498149e75f33aa8f (diff)
test: check copy_to/from_user boundary validation
To help avoid an architecture failing to correctly check kernel/user boundaries when handling copy_to_user, copy_from_user, put_user, or get_user, perform some simple tests and fail to load if any of them behave unexpectedly. Specifically, this is to make sure there is a way to notice if things like what was fixed in commit 8404663f81d2 ("ARM: 7527/1: uaccess: explicitly check __user pointer when !CPU_USE_DOMAINS") ever regresses again, for any architecture. Additionally, adds new "user" selftest target, which loads this module. Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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