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| author | Kees Cook <keescook@chromium.org> | 2014-01-23 15:54:38 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-23 16:36:57 -0800 |
| commit | 3e2a4c183ace8708c69f589505fb82bb63010ade (patch) | |
| tree | e201c3d60f39bbe3ba5026417d454553ad2fe073 /tools | |
| parent | 93e9ef83f40603535ffe6b60498149e75f33aa8f (diff) | |
| download | linux-3e2a4c183ace8708c69f589505fb82bb63010ade.tar.gz linux-3e2a4c183ace8708c69f589505fb82bb63010ade.tar.bz2 linux-3e2a4c183ace8708c69f589505fb82bb63010ade.zip | |
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>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/Makefile | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/user/Makefile | 13 |
2 files changed, 14 insertions, 0 deletions
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 9f3eae290900..32487ed18354 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -9,6 +9,7 @@ TARGETS += ptrace TARGETS += timers TARGETS += vm TARGETS += powerpc +TARGETS += user all: for TARGET in $(TARGETS); do \ diff --git a/tools/testing/selftests/user/Makefile b/tools/testing/selftests/user/Makefile new file mode 100644 index 000000000000..396255bd720e --- /dev/null +++ b/tools/testing/selftests/user/Makefile @@ -0,0 +1,13 @@ +# Makefile for user memory selftests + +# No binaries, but make sure arg-less "make" doesn't trigger "run_tests" +all: + +run_tests: all + @if /sbin/modprobe test_user_copy ; then \ + rmmod test_user_copy; \ + echo "user_copy: ok"; \ + else \ + echo "user_copy: [FAIL]"; \ + exit 1; \ + fi |