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Kees Cook 3e2a4c183a 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 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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2014-01-23 16:36:57 -08:00
..
breakpoints breakpoint selftests: print failure status instead of cause make error 2012-12-17 17:15:27 -08:00
cpu-hotplug tools/testing/selftests: don't assume the x bit is set on scripts 2013-07-03 16:08:07 -07:00
efivarfs efivars: efivarfs_valid_name() should handle pstore syntax 2013-03-06 14:46:04 +00:00
ipc selftests: IPC message queue copy feature test 2013-01-04 16:11:45 -08:00
kcmp selftests: add .gitignore for kcmp 2013-07-03 16:08:07 -07:00
memory-hotplug tools/testing/selftests: don't assume the x bit is set on scripts 2013-07-03 16:08:07 -07:00
mqueue mqueue selftests: print failure status instead of cause make error 2012-12-17 17:15:26 -08:00
net tools: selftests: psock_tpacket: get rid of macro wrappers 2013-07-02 00:23:57 -07:00
powerpc selftests: Add test of PMU instruction counting on powerpc 2013-08-14 14:57:10 +10:00
ptrace selftest: add a test case for PTRACE_PEEKSIGINFO 2013-04-30 17:04:05 -07:00
rcutorture rcutorture: Stop tracking FSF's postal address 2013-12-03 10:11:19 -08:00
timers tools/testing/selftests: fix uninitialized variable 2013-10-16 21:35:53 -07:00
user test: check copy_to/from_user boundary validation 2014-01-23 16:36:57 -08:00
vm selftests: add .gitignore for vm 2013-07-03 16:08:07 -07:00
Makefile test: check copy_to/from_user boundary validation 2014-01-23 16:36:57 -08:00
README.txt selftests: add a simple doc 2013-02-27 19:10:24 -08:00

README.txt 

Linux Kernel Selftests

The kernel contains a set of "self tests" under the tools/testing/selftests/
directory. These are intended to be small unit tests to exercise individual
code paths in the kernel.

Running the selftests
=====================

To build the tests:

  $ make -C tools/testing/selftests


To run the tests:

  $ make -C tools/testing/selftests run_tests

- note that some tests will require root privileges.


To run only tests targetted for a single subsystem:

  $  make -C tools/testing/selftests TARGETS=cpu-hotplug run_tests

See the top-level tools/testing/selftests/Makefile for the list of all possible
targets.


Contributing new tests
======================

In general, the rules for for selftests are

 * Do as much as you can if you're not root;

 * Don't take too long;

 * Don't break the build on any architecture, and

 * Don't cause the top-level "make run_tests" to fail if your feature is
   unconfigured.