diff options
| author | Kees Cook <keescook@chromium.org> | 2014-01-10 12:41:45 +1100 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2014-01-10 12:41:45 +1100 |
| commit | 6900c74f27c1f021ce08de33cdbce41933197533 (patch) | |
| tree | 6e5cd85ce4ea09ecc5159500325de5bbc963714e /tools | |
| parent | 4817312ce2a3c027b0a8b20e236eb38c0ee2e1e8 (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 8404663f81 ("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>
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 |