linux/tools/testing/selftests/livepatch
Shuah Khan 05564c29fc selftests: livepatch: Fix it to do root uid check and skip
livepatch test configures the system and debug environment to run
tests. Some of these actions fail without root access and test
dumps several permission denied messages before it exits.

Fix test-state.sh to call setup_config instead of set_dynamic_debug
as suggested by Petr Mladek <pmladek@suse.com>

Fix it to check root uid and exit with skip code instead.

Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Acked-by: Joe Lawrence <joe.lawrence@redhat.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-12-23 10:52:40 -07:00
..
config selftests: livepatch: add missing fragments to config 2019-09-23 08:33:16 -06:00
functions.sh selftests: livepatch: Fix it to do root uid check and skip 2019-12-23 10:52:40 -07:00
Makefile New tracing features: 2019-11-27 11:42:01 -08:00
README
settings selftests/livepatch: Disable the timeout 2019-10-25 19:59:12 +02:00
test-callbacks.sh selftests/livepatch: Make dynamic debug setup and restore generic 2019-11-04 09:33:15 -05:00
test-ftrace.sh selftests/livepatch: Test interaction with ftrace_enabled 2019-11-04 09:33:16 -05:00
test-livepatch.sh selftests/livepatch: Make dynamic debug setup and restore generic 2019-11-04 09:33:15 -05:00
test-shadow-vars.sh selftests/livepatch: Make dynamic debug setup and restore generic 2019-11-04 09:33:15 -05:00
test-state.sh selftests: livepatch: Fix it to do root uid check and skip 2019-12-23 10:52:40 -07:00

====================
Livepatch Self Tests
====================

This is a small set of sanity tests for the kernel livepatching.

The test suite loads and unloads several test kernel modules to verify
livepatch behavior.  Debug information is logged to the kernel's message
buffer and parsed for expected messages.  (Note: the tests will clear
the message buffer between individual tests.)


Config
------

Set these config options and their prerequisites:

CONFIG_LIVEPATCH=y
CONFIG_TEST_LIVEPATCH=m


Running the tests
-----------------

Test kernel modules are built as part of lib/ (make modules) and need to
be installed (make modules_install) as the test scripts will modprobe
them.

To run the livepatch selftests, from the top of the kernel source tree:

  % make -C tools/testing/selftests TARGETS=livepatch run_tests


Adding tests
------------

See the common functions.sh file for the existing collection of utility
functions, most importantly set_dynamic_debug() and check_result().  The
latter function greps the kernel's ring buffer for "livepatch:" and
"test_klp" strings, so tests be sure to include one of those strings for
result comparison.  Other utility functions include general module
loading and livepatch loading helpers (waiting for patch transitions,
sysfs entries, etc.)