forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
553 lines
23 KiB
553 lines
23 KiB
#!/bin/bash |
|
# SPDX-License-Identifier: GPL-2.0 |
|
# Copyright (C) 2018 Joe Lawrence <[email protected]> |
|
|
|
. $(dirname $0)/functions.sh |
|
|
|
MOD_LIVEPATCH=test_klp_callbacks_demo |
|
MOD_LIVEPATCH2=test_klp_callbacks_demo2 |
|
MOD_TARGET=test_klp_callbacks_mod |
|
MOD_TARGET_BUSY=test_klp_callbacks_busy |
|
|
|
setup_config |
|
|
|
|
|
# Test a combination of loading a kernel module and a livepatch that |
|
# patches a function in the first module. Load the target module |
|
# before the livepatch module. Unload them in the same order. |
|
# |
|
# - On livepatch enable, before the livepatch transition starts, |
|
# pre-patch callbacks are executed for vmlinux and $MOD_TARGET (those |
|
# klp_objects currently loaded). After klp_objects are patched |
|
# according to the klp_patch, their post-patch callbacks run and the |
|
# transition completes. |
|
# |
|
# - Similarly, on livepatch disable, pre-patch callbacks run before the |
|
# unpatching transition starts. klp_objects are reverted, post-patch |
|
# callbacks execute and the transition completes. |
|
|
|
start_test "target module before livepatch" |
|
|
|
load_mod $MOD_TARGET |
|
load_lp $MOD_LIVEPATCH |
|
disable_lp $MOD_LIVEPATCH |
|
unload_lp $MOD_LIVEPATCH |
|
unload_mod $MOD_TARGET |
|
|
|
check_result "% modprobe $MOD_TARGET |
|
$MOD_TARGET: ${MOD_TARGET}_init |
|
% modprobe $MOD_LIVEPATCH |
|
livepatch: enabling patch '$MOD_LIVEPATCH' |
|
livepatch: '$MOD_LIVEPATCH': initializing patching transition |
|
$MOD_LIVEPATCH: pre_patch_callback: vmlinux |
|
$MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': starting patching transition |
|
livepatch: '$MOD_LIVEPATCH': completing patching transition |
|
$MOD_LIVEPATCH: post_patch_callback: vmlinux |
|
$MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': patching complete |
|
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled |
|
livepatch: '$MOD_LIVEPATCH': initializing unpatching transition |
|
$MOD_LIVEPATCH: pre_unpatch_callback: vmlinux |
|
$MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': starting unpatching transition |
|
livepatch: '$MOD_LIVEPATCH': completing unpatching transition |
|
$MOD_LIVEPATCH: post_unpatch_callback: vmlinux |
|
$MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': unpatching complete |
|
% rmmod $MOD_LIVEPATCH |
|
% rmmod $MOD_TARGET |
|
$MOD_TARGET: ${MOD_TARGET}_exit" |
|
|
|
|
|
# This test is similar to the previous test, but (un)load the livepatch |
|
# module before the target kernel module. This tests the livepatch |
|
# core's module_coming handler. |
|
# |
|
# - On livepatch enable, only pre/post-patch callbacks are executed for |
|
# currently loaded klp_objects, in this case, vmlinux. |
|
# |
|
# - When a targeted module is subsequently loaded, only its |
|
# pre/post-patch callbacks are executed. |
|
# |
|
# - On livepatch disable, all currently loaded klp_objects' (vmlinux and |
|
# $MOD_TARGET) pre/post-unpatch callbacks are executed. |
|
|
|
start_test "module_coming notifier" |
|
|
|
load_lp $MOD_LIVEPATCH |
|
load_mod $MOD_TARGET |
|
disable_lp $MOD_LIVEPATCH |
|
unload_lp $MOD_LIVEPATCH |
|
unload_mod $MOD_TARGET |
|
|
|
check_result "% modprobe $MOD_LIVEPATCH |
|
livepatch: enabling patch '$MOD_LIVEPATCH' |
|
livepatch: '$MOD_LIVEPATCH': initializing patching transition |
|
$MOD_LIVEPATCH: pre_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': starting patching transition |
|
livepatch: '$MOD_LIVEPATCH': completing patching transition |
|
$MOD_LIVEPATCH: post_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': patching complete |
|
% modprobe $MOD_TARGET |
|
livepatch: applying patch '$MOD_LIVEPATCH' to loading module '$MOD_TARGET' |
|
$MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init |
|
$MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init |
|
$MOD_TARGET: ${MOD_TARGET}_init |
|
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled |
|
livepatch: '$MOD_LIVEPATCH': initializing unpatching transition |
|
$MOD_LIVEPATCH: pre_unpatch_callback: vmlinux |
|
$MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': starting unpatching transition |
|
livepatch: '$MOD_LIVEPATCH': completing unpatching transition |
|
$MOD_LIVEPATCH: post_unpatch_callback: vmlinux |
|
$MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': unpatching complete |
|
% rmmod $MOD_LIVEPATCH |
|
% rmmod $MOD_TARGET |
|
$MOD_TARGET: ${MOD_TARGET}_exit" |
|
|
|
|
|
# Test loading the livepatch after a targeted kernel module, then unload |
|
# the kernel module before disabling the livepatch. This tests the |
|
# livepatch core's module_going handler. |
|
# |
|
# - First load a target module, then the livepatch. |
|
# |
|
# - When a target module is unloaded, the livepatch is only reverted |
|
# from that klp_object ($MOD_TARGET). As such, only its pre and |
|
# post-unpatch callbacks are executed when this occurs. |
|
# |
|
# - When the livepatch is disabled, pre and post-unpatch callbacks are |
|
# run for the remaining klp_object, vmlinux. |
|
|
|
start_test "module_going notifier" |
|
|
|
load_mod $MOD_TARGET |
|
load_lp $MOD_LIVEPATCH |
|
unload_mod $MOD_TARGET |
|
disable_lp $MOD_LIVEPATCH |
|
unload_lp $MOD_LIVEPATCH |
|
|
|
check_result "% modprobe $MOD_TARGET |
|
$MOD_TARGET: ${MOD_TARGET}_init |
|
% modprobe $MOD_LIVEPATCH |
|
livepatch: enabling patch '$MOD_LIVEPATCH' |
|
livepatch: '$MOD_LIVEPATCH': initializing patching transition |
|
$MOD_LIVEPATCH: pre_patch_callback: vmlinux |
|
$MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': starting patching transition |
|
livepatch: '$MOD_LIVEPATCH': completing patching transition |
|
$MOD_LIVEPATCH: post_patch_callback: vmlinux |
|
$MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': patching complete |
|
% rmmod $MOD_TARGET |
|
$MOD_TARGET: ${MOD_TARGET}_exit |
|
$MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away |
|
livepatch: reverting patch '$MOD_LIVEPATCH' on unloading module '$MOD_TARGET' |
|
$MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away |
|
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled |
|
livepatch: '$MOD_LIVEPATCH': initializing unpatching transition |
|
$MOD_LIVEPATCH: pre_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': starting unpatching transition |
|
livepatch: '$MOD_LIVEPATCH': completing unpatching transition |
|
$MOD_LIVEPATCH: post_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': unpatching complete |
|
% rmmod $MOD_LIVEPATCH" |
|
|
|
|
|
# This test is similar to the previous test, however the livepatch is |
|
# loaded first. This tests the livepatch core's module_coming and |
|
# module_going handlers. |
|
# |
|
# - First load the livepatch. |
|
# |
|
# - When a targeted kernel module is subsequently loaded, only its |
|
# pre/post-patch callbacks are executed. |
|
# |
|
# - When the target module is unloaded, the livepatch is only reverted |
|
# from the $MOD_TARGET klp_object. As such, only pre and |
|
# post-unpatch callbacks are executed when this occurs. |
|
|
|
start_test "module_coming and module_going notifiers" |
|
|
|
load_lp $MOD_LIVEPATCH |
|
load_mod $MOD_TARGET |
|
unload_mod $MOD_TARGET |
|
disable_lp $MOD_LIVEPATCH |
|
unload_lp $MOD_LIVEPATCH |
|
|
|
check_result "% modprobe $MOD_LIVEPATCH |
|
livepatch: enabling patch '$MOD_LIVEPATCH' |
|
livepatch: '$MOD_LIVEPATCH': initializing patching transition |
|
$MOD_LIVEPATCH: pre_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': starting patching transition |
|
livepatch: '$MOD_LIVEPATCH': completing patching transition |
|
$MOD_LIVEPATCH: post_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': patching complete |
|
% modprobe $MOD_TARGET |
|
livepatch: applying patch '$MOD_LIVEPATCH' to loading module '$MOD_TARGET' |
|
$MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init |
|
$MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init |
|
$MOD_TARGET: ${MOD_TARGET}_init |
|
% rmmod $MOD_TARGET |
|
$MOD_TARGET: ${MOD_TARGET}_exit |
|
$MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away |
|
livepatch: reverting patch '$MOD_LIVEPATCH' on unloading module '$MOD_TARGET' |
|
$MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away |
|
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled |
|
livepatch: '$MOD_LIVEPATCH': initializing unpatching transition |
|
$MOD_LIVEPATCH: pre_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': starting unpatching transition |
|
livepatch: '$MOD_LIVEPATCH': completing unpatching transition |
|
$MOD_LIVEPATCH: post_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': unpatching complete |
|
% rmmod $MOD_LIVEPATCH" |
|
|
|
|
|
# A simple test of loading a livepatch without one of its patch target |
|
# klp_objects ever loaded ($MOD_TARGET). |
|
# |
|
# - Load the livepatch. |
|
# |
|
# - As expected, only pre/post-(un)patch handlers are executed for |
|
# vmlinux. |
|
|
|
start_test "target module not present" |
|
|
|
load_lp $MOD_LIVEPATCH |
|
disable_lp $MOD_LIVEPATCH |
|
unload_lp $MOD_LIVEPATCH |
|
|
|
check_result "% modprobe $MOD_LIVEPATCH |
|
livepatch: enabling patch '$MOD_LIVEPATCH' |
|
livepatch: '$MOD_LIVEPATCH': initializing patching transition |
|
$MOD_LIVEPATCH: pre_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': starting patching transition |
|
livepatch: '$MOD_LIVEPATCH': completing patching transition |
|
$MOD_LIVEPATCH: post_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': patching complete |
|
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled |
|
livepatch: '$MOD_LIVEPATCH': initializing unpatching transition |
|
$MOD_LIVEPATCH: pre_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': starting unpatching transition |
|
livepatch: '$MOD_LIVEPATCH': completing unpatching transition |
|
$MOD_LIVEPATCH: post_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': unpatching complete |
|
% rmmod $MOD_LIVEPATCH" |
|
|
|
|
|
# Test a scenario where a vmlinux pre-patch callback returns a non-zero |
|
# status (ie, failure). |
|
# |
|
# - First load a target module. |
|
# |
|
# - Load the livepatch module, setting its 'pre_patch_ret' value to -19 |
|
# (-ENODEV). When its vmlinux pre-patch callback executes, this |
|
# status code will propagate back to the module-loading subsystem. |
|
# The result is that the insmod command refuses to load the livepatch |
|
# module. |
|
|
|
start_test "pre-patch callback -ENODEV" |
|
|
|
load_mod $MOD_TARGET |
|
load_failing_mod $MOD_LIVEPATCH pre_patch_ret=-19 |
|
unload_mod $MOD_TARGET |
|
|
|
check_result "% modprobe $MOD_TARGET |
|
$MOD_TARGET: ${MOD_TARGET}_init |
|
% modprobe $MOD_LIVEPATCH pre_patch_ret=-19 |
|
livepatch: enabling patch '$MOD_LIVEPATCH' |
|
livepatch: '$MOD_LIVEPATCH': initializing patching transition |
|
test_klp_callbacks_demo: pre_patch_callback: vmlinux |
|
livepatch: pre-patch callback failed for object 'vmlinux' |
|
livepatch: failed to enable patch '$MOD_LIVEPATCH' |
|
livepatch: '$MOD_LIVEPATCH': canceling patching transition, going to unpatch |
|
livepatch: '$MOD_LIVEPATCH': completing unpatching transition |
|
livepatch: '$MOD_LIVEPATCH': unpatching complete |
|
modprobe: ERROR: could not insert '$MOD_LIVEPATCH': No such device |
|
% rmmod $MOD_TARGET |
|
$MOD_TARGET: ${MOD_TARGET}_exit" |
|
|
|
|
|
# Similar to the previous test, setup a livepatch such that its vmlinux |
|
# pre-patch callback returns success. However, when a targeted kernel |
|
# module is later loaded, have the livepatch return a failing status |
|
# code. |
|
# |
|
# - Load the livepatch, vmlinux pre-patch callback succeeds. |
|
# |
|
# - Set a trap so subsequent pre-patch callbacks to this livepatch will |
|
# return -ENODEV. |
|
# |
|
# - The livepatch pre-patch callback for subsequently loaded target |
|
# modules will return failure, so the module loader refuses to load |
|
# the kernel module. No post-patch or pre/post-unpatch callbacks are |
|
# executed for this klp_object. |
|
# |
|
# - Pre/post-unpatch callbacks are run for the vmlinux klp_object. |
|
|
|
start_test "module_coming + pre-patch callback -ENODEV" |
|
|
|
load_lp $MOD_LIVEPATCH |
|
set_pre_patch_ret $MOD_LIVEPATCH -19 |
|
load_failing_mod $MOD_TARGET |
|
disable_lp $MOD_LIVEPATCH |
|
unload_lp $MOD_LIVEPATCH |
|
|
|
check_result "% modprobe $MOD_LIVEPATCH |
|
livepatch: enabling patch '$MOD_LIVEPATCH' |
|
livepatch: '$MOD_LIVEPATCH': initializing patching transition |
|
$MOD_LIVEPATCH: pre_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': starting patching transition |
|
livepatch: '$MOD_LIVEPATCH': completing patching transition |
|
$MOD_LIVEPATCH: post_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': patching complete |
|
% echo -19 > /sys/module/$MOD_LIVEPATCH/parameters/pre_patch_ret |
|
% modprobe $MOD_TARGET |
|
livepatch: applying patch '$MOD_LIVEPATCH' to loading module '$MOD_TARGET' |
|
$MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init |
|
livepatch: pre-patch callback failed for object '$MOD_TARGET' |
|
livepatch: patch '$MOD_LIVEPATCH' failed for module '$MOD_TARGET', refusing to load module '$MOD_TARGET' |
|
modprobe: ERROR: could not insert '$MOD_TARGET': No such device |
|
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled |
|
livepatch: '$MOD_LIVEPATCH': initializing unpatching transition |
|
$MOD_LIVEPATCH: pre_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': starting unpatching transition |
|
livepatch: '$MOD_LIVEPATCH': completing unpatching transition |
|
$MOD_LIVEPATCH: post_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': unpatching complete |
|
% rmmod $MOD_LIVEPATCH" |
|
|
|
|
|
# Test loading multiple targeted kernel modules. This test-case is |
|
# mainly for comparing with the next test-case. |
|
# |
|
# - Load a target "busy" kernel module which kicks off a worker function |
|
# that immediately exits. |
|
# |
|
# - Proceed with loading the livepatch and another ordinary target |
|
# module. Post-patch callbacks are executed and the transition |
|
# completes quickly. |
|
|
|
start_test "multiple target modules" |
|
|
|
load_mod $MOD_TARGET_BUSY block_transition=N |
|
load_lp $MOD_LIVEPATCH |
|
load_mod $MOD_TARGET |
|
unload_mod $MOD_TARGET |
|
disable_lp $MOD_LIVEPATCH |
|
unload_lp $MOD_LIVEPATCH |
|
unload_mod $MOD_TARGET_BUSY |
|
|
|
check_result "% modprobe $MOD_TARGET_BUSY block_transition=N |
|
$MOD_TARGET_BUSY: ${MOD_TARGET_BUSY}_init |
|
$MOD_TARGET_BUSY: busymod_work_func enter |
|
$MOD_TARGET_BUSY: busymod_work_func exit |
|
% modprobe $MOD_LIVEPATCH |
|
livepatch: enabling patch '$MOD_LIVEPATCH' |
|
livepatch: '$MOD_LIVEPATCH': initializing patching transition |
|
$MOD_LIVEPATCH: pre_patch_callback: vmlinux |
|
$MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': starting patching transition |
|
livepatch: '$MOD_LIVEPATCH': completing patching transition |
|
$MOD_LIVEPATCH: post_patch_callback: vmlinux |
|
$MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': patching complete |
|
% modprobe $MOD_TARGET |
|
livepatch: applying patch '$MOD_LIVEPATCH' to loading module '$MOD_TARGET' |
|
$MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init |
|
$MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init |
|
$MOD_TARGET: ${MOD_TARGET}_init |
|
% rmmod $MOD_TARGET |
|
$MOD_TARGET: ${MOD_TARGET}_exit |
|
$MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away |
|
livepatch: reverting patch '$MOD_LIVEPATCH' on unloading module '$MOD_TARGET' |
|
$MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away |
|
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled |
|
livepatch: '$MOD_LIVEPATCH': initializing unpatching transition |
|
$MOD_LIVEPATCH: pre_unpatch_callback: vmlinux |
|
$MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': starting unpatching transition |
|
livepatch: '$MOD_LIVEPATCH': completing unpatching transition |
|
$MOD_LIVEPATCH: post_unpatch_callback: vmlinux |
|
$MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': unpatching complete |
|
% rmmod $MOD_LIVEPATCH |
|
% rmmod $MOD_TARGET_BUSY |
|
$MOD_TARGET_BUSY: ${MOD_TARGET_BUSY}_exit" |
|
|
|
|
|
# A similar test as the previous one, but force the "busy" kernel module |
|
# to block the livepatch transition. |
|
# |
|
# The livepatching core will refuse to patch a task that is currently |
|
# executing a to-be-patched function -- the consistency model stalls the |
|
# current patch transition until this safety-check is met. Test a |
|
# scenario where one of a livepatch's target klp_objects sits on such a |
|
# function for a long time. Meanwhile, load and unload other target |
|
# kernel modules while the livepatch transition is in progress. |
|
# |
|
# - Load the "busy" kernel module, this time make its work function loop |
|
# |
|
# - Meanwhile, the livepatch is loaded. Notice that the patch |
|
# transition does not complete as the targeted "busy" module is |
|
# sitting on a to-be-patched function. |
|
# |
|
# - Load a second target module (this one is an ordinary idle kernel |
|
# module). Note that *no* post-patch callbacks will be executed while |
|
# the livepatch is still in transition. |
|
# |
|
# - Request an unload of the simple kernel module. The patch is still |
|
# transitioning, so its pre-unpatch callbacks are skipped. |
|
# |
|
# - Finally the livepatch is disabled. Since none of the patch's |
|
# klp_object's post-patch callbacks executed, the remaining |
|
# klp_object's pre-unpatch callbacks are skipped. |
|
|
|
start_test "busy target module" |
|
|
|
load_mod $MOD_TARGET_BUSY block_transition=Y |
|
load_lp_nowait $MOD_LIVEPATCH |
|
|
|
# Wait until the livepatch reports in-transition state, i.e. that it's |
|
# stalled on $MOD_TARGET_BUSY::busymod_work_func() |
|
loop_until 'grep -q '^1$' /sys/kernel/livepatch/$MOD_LIVEPATCH/transition' || |
|
die "failed to stall transition" |
|
|
|
load_mod $MOD_TARGET |
|
unload_mod $MOD_TARGET |
|
disable_lp $MOD_LIVEPATCH |
|
unload_lp $MOD_LIVEPATCH |
|
unload_mod $MOD_TARGET_BUSY |
|
|
|
check_result "% modprobe $MOD_TARGET_BUSY block_transition=Y |
|
$MOD_TARGET_BUSY: ${MOD_TARGET_BUSY}_init |
|
$MOD_TARGET_BUSY: busymod_work_func enter |
|
% modprobe $MOD_LIVEPATCH |
|
livepatch: enabling patch '$MOD_LIVEPATCH' |
|
livepatch: '$MOD_LIVEPATCH': initializing patching transition |
|
$MOD_LIVEPATCH: pre_patch_callback: vmlinux |
|
$MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': starting patching transition |
|
% modprobe $MOD_TARGET |
|
livepatch: applying patch '$MOD_LIVEPATCH' to loading module '$MOD_TARGET' |
|
$MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init |
|
$MOD_TARGET: ${MOD_TARGET}_init |
|
% rmmod $MOD_TARGET |
|
$MOD_TARGET: ${MOD_TARGET}_exit |
|
livepatch: reverting patch '$MOD_LIVEPATCH' on unloading module '$MOD_TARGET' |
|
$MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away |
|
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled |
|
livepatch: '$MOD_LIVEPATCH': reversing transition from patching to unpatching |
|
livepatch: '$MOD_LIVEPATCH': starting unpatching transition |
|
livepatch: '$MOD_LIVEPATCH': completing unpatching transition |
|
$MOD_LIVEPATCH: post_unpatch_callback: vmlinux |
|
$MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state |
|
livepatch: '$MOD_LIVEPATCH': unpatching complete |
|
% rmmod $MOD_LIVEPATCH |
|
% rmmod $MOD_TARGET_BUSY |
|
$MOD_TARGET_BUSY: busymod_work_func exit |
|
$MOD_TARGET_BUSY: ${MOD_TARGET_BUSY}_exit" |
|
|
|
|
|
# Test loading multiple livepatches. This test-case is mainly for comparing |
|
# with the next test-case. |
|
# |
|
# - Load and unload two livepatches, pre and post (un)patch callbacks |
|
# execute as each patch progresses through its (un)patching |
|
# transition. |
|
|
|
start_test "multiple livepatches" |
|
|
|
load_lp $MOD_LIVEPATCH |
|
load_lp $MOD_LIVEPATCH2 |
|
disable_lp $MOD_LIVEPATCH2 |
|
disable_lp $MOD_LIVEPATCH |
|
unload_lp $MOD_LIVEPATCH2 |
|
unload_lp $MOD_LIVEPATCH |
|
|
|
check_result "% modprobe $MOD_LIVEPATCH |
|
livepatch: enabling patch '$MOD_LIVEPATCH' |
|
livepatch: '$MOD_LIVEPATCH': initializing patching transition |
|
$MOD_LIVEPATCH: pre_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': starting patching transition |
|
livepatch: '$MOD_LIVEPATCH': completing patching transition |
|
$MOD_LIVEPATCH: post_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': patching complete |
|
% modprobe $MOD_LIVEPATCH2 |
|
livepatch: enabling patch '$MOD_LIVEPATCH2' |
|
livepatch: '$MOD_LIVEPATCH2': initializing patching transition |
|
$MOD_LIVEPATCH2: pre_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH2': starting patching transition |
|
livepatch: '$MOD_LIVEPATCH2': completing patching transition |
|
$MOD_LIVEPATCH2: post_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH2': patching complete |
|
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled |
|
livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition |
|
$MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH2': starting unpatching transition |
|
livepatch: '$MOD_LIVEPATCH2': completing unpatching transition |
|
$MOD_LIVEPATCH2: post_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH2': unpatching complete |
|
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled |
|
livepatch: '$MOD_LIVEPATCH': initializing unpatching transition |
|
$MOD_LIVEPATCH: pre_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': starting unpatching transition |
|
livepatch: '$MOD_LIVEPATCH': completing unpatching transition |
|
$MOD_LIVEPATCH: post_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': unpatching complete |
|
% rmmod $MOD_LIVEPATCH2 |
|
% rmmod $MOD_LIVEPATCH" |
|
|
|
|
|
# Load multiple livepatches, but the second as an 'atomic-replace' |
|
# patch. When the latter loads, the original livepatch should be |
|
# disabled and *none* of its pre/post-unpatch callbacks executed. On |
|
# the other hand, when the atomic-replace livepatch is disabled, its |
|
# pre/post-unpatch callbacks *should* be executed. |
|
# |
|
# - Load and unload two livepatches, the second of which has its |
|
# .replace flag set true. |
|
# |
|
# - Pre and post patch callbacks are executed for both livepatches. |
|
# |
|
# - Once the atomic replace module is loaded, only its pre and post |
|
# unpatch callbacks are executed. |
|
|
|
start_test "atomic replace" |
|
|
|
load_lp $MOD_LIVEPATCH |
|
load_lp $MOD_LIVEPATCH2 replace=1 |
|
disable_lp $MOD_LIVEPATCH2 |
|
unload_lp $MOD_LIVEPATCH2 |
|
unload_lp $MOD_LIVEPATCH |
|
|
|
check_result "% modprobe $MOD_LIVEPATCH |
|
livepatch: enabling patch '$MOD_LIVEPATCH' |
|
livepatch: '$MOD_LIVEPATCH': initializing patching transition |
|
$MOD_LIVEPATCH: pre_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': starting patching transition |
|
livepatch: '$MOD_LIVEPATCH': completing patching transition |
|
$MOD_LIVEPATCH: post_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH': patching complete |
|
% modprobe $MOD_LIVEPATCH2 replace=1 |
|
livepatch: enabling patch '$MOD_LIVEPATCH2' |
|
livepatch: '$MOD_LIVEPATCH2': initializing patching transition |
|
$MOD_LIVEPATCH2: pre_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH2': starting patching transition |
|
livepatch: '$MOD_LIVEPATCH2': completing patching transition |
|
$MOD_LIVEPATCH2: post_patch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH2': patching complete |
|
% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled |
|
livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition |
|
$MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH2': starting unpatching transition |
|
livepatch: '$MOD_LIVEPATCH2': completing unpatching transition |
|
$MOD_LIVEPATCH2: post_unpatch_callback: vmlinux |
|
livepatch: '$MOD_LIVEPATCH2': unpatching complete |
|
% rmmod $MOD_LIVEPATCH2 |
|
% rmmod $MOD_LIVEPATCH" |
|
|
|
|
|
exit 0
|
|
|