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3 Commits

Author SHA1 Message Date
Christian Brauner
e48d117436 binderfs: add stress test for binderfs binder devices 
This adds a stress test that should hopefully help us catch regressions
for [1], [2], and [3].

[1]: 2669b8b0c798 ("binder: prevent UAF for binderfs devices")
[2]: f0fe2c0f050d ("binder: prevent UAF for binderfs devices II")
[3]: 211b64e4b5b6 ("binderfs: use refcount for binder control devices too")
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20200313152420.138777-3-christian.brauner@ubuntu.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-03-19 07:41:02 +01:00
Christian Brauner
6e29225af9 binderfs: port tests to test harness infrastructure 
Makes for nicer output and prepares for additional tests.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20200313152420.138777-1-christian.brauner@ubuntu.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2020-03-19 07:41:01 +01:00
Christian Brauner
75abec73de selftests: add binderfs selftests 
This adds the promised selftest for binderfs. It will verify the following
things:
- binderfs mounting works
- binder device allocation works
- performing a binder ioctl() request through a binderfs device works
- binder device removal works
- binder-control removal fails
- binderfs unmounting works

The tests are performed both privileged and unprivileged. The latter
verifies that binderfs behaves correctly in user namespaces.

Cc: Todd Kjos <tkjos@google.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Acked-by: Shuah Khan <shuah@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2019-01-30 15:19:56 +01:00