linux/tools/testing/selftests/livepatch, branch v5.4

selftests: livepatch: add missing fragments to config

2019-09-23T14:33:16Z

When generating config with 'make defconfig kselftest-merge' fragment CONFIG_TEST_LIVEPATCH=m isn't set. Rework to enable CONFIG_LIVEPATCH and CONFIG_DYNAMIC_DEBUG as well. Signed-off-by: Anders Roxell Signed-off-by: Shuah Khan

selftests/livepatch: push and pop dynamic debug config

2019-07-30T21:47:10Z

The livepatching self-tests tweak the dynamic debug config to verify the kernel log during the tests. Enhance set_dynamic_debug() so that the config changes are restored when the script exits. Note this functionality needs to keep in sync with: - dynamic_debug input/output formatting - functions affected by set_dynamic_debug() For example, push_dynamic_debug() transforms: kernel/livepatch/transition.c:530 [livepatch]klp_init_transition =_ "'%s': initializing %s transition\012" to the following: file kernel/livepatch/transition.c line 530 =_ Signed-off-by: Joe Lawrence Tested-by: Petr Mladek Signed-off-by: Shuah Khan

selftests/livepatch: add test skip handling

2019-07-24T20:17:46Z

Add a skip() message function that stops the test, logs an explanation, and sets the "skip" return code (4). Before loading a livepatch self-test kernel module, first verify that we've built and installed it by running a 'modprobe --dry-run'. This should catch a few environment issues, including !CONFIG_LIVEPATCH and !CONFIG_TEST_LIVEPATCH. In these cases, exit gracefully with the new skip() function. Reported-by: Jiri Benc Suggested-by: Shuah Khan Reviewed-by: Petr Mladek Signed-off-by: Joe Lawrence Signed-off-by: Shuah Khan

selftests/livepatch: Add functions.sh to TEST_PROGS_EXTENDED

2019-04-15T08:43:21Z

Add functions.sh to TEST_PROGS_EXTENDED so that it is installed along with the rest of the selftests and they can be run. Originally-by: Shuah Khan Signed-off-by: Miroslav Benes Acked-by: Joe Lawrence Signed-off-by: Petr Mladek

selftests/livepatch: use TEST_PROGS for test scripts

2019-03-27T08:57:46Z

Adrian reports that 'make -C tools clean' results in removal of the livepatch selftest shell scripts. As per the selftest lib.mk file, TEST_PROGS are for test shell scripts, not TEST_GEN_PROGS. Adjust the livepatch selftest Makefile accordingly. Reported-by: Adrian Hunter Signed-off-by: Joe Lawrence Tested-by: Adrian Hunter Signed-off-by: Petr Mladek

livepatch/selftests: use "$@" to preserve argument list

2019-02-12T09:58:47Z

The livepatch selftest functions.sh library uses "$*" and an intermediate variable to extract and then pass arguments from function to function call. The effect of this combination is that the argument list is flattened into a single argument. Sometimes this is benign, but in cases like __load_mod(), the modprobe invocation will interpret all the module parameters as a single parameter. Drop the intermediate variable and use the "$@" special parameter as described in the bash manual. Link: https://www.gnu.org/software/bash/manual/bash.html#Special-Parameters Signed-off-by: Joe Lawrence Reviewed-by: Kamalesh Babulal Acked-by: Miroslav Benes Signed-off-by: Petr Mladek

selftests/livepatch: introduce tests

2019-01-11T19:51:24Z

Add a few livepatch modules and simple target modules that the included regression suite can run tests against: - basic livepatching (multiple patches, atomic replace) - pre/post (un)patch callbacks - shadow variable API Signed-off-by: Joe Lawrence Signed-off-by: Petr Mladek Tested-by: Miroslav Benes Tested-by: Alice Ferrazzi Acked-by: Joe Lawrence Acked-by: Josh Poimboeuf Signed-off-by: Jiri Kosina