| #!/bin/bash | |
| # SPDX-License-Identifier: GPL-2.0 | |
| # Copyright (C) 2024 SUSE | |
| # Author: Michael Vetter <mvetter@suse.com> | |
| . $(dirname $0)/functions.sh | |
| grep -q kprobe_ftrace_ops /proc/kallsyms || skip "test-kprobe requires CONFIG_KPROBES_ON_FTRACE" | |
| MOD_LIVEPATCH=test_klp_livepatch | |
| MOD_KPROBE=test_klp_kprobe | |
| setup_config | |
| # Kprobe a function and verify that we can't livepatch that same function | |
| # when it uses a post_handler since only one IPMODIFY maybe be registered | |
| # to any given function at a time. | |
| start_test "livepatch interaction with kprobed function with post_handler" | |
| echo 1 > "$SYSFS_KPROBES_DIR/enabled" | |
| load_mod $MOD_KPROBE has_post_handler=y | |
| load_failing_mod $MOD_LIVEPATCH | |
| unload_mod $MOD_KPROBE | |
| check_result "% insmod test_modules/test_klp_kprobe.ko has_post_handler=y | |
| % insmod test_modules/$MOD_LIVEPATCH.ko | |
| livepatch: enabling patch '$MOD_LIVEPATCH' | |
| livepatch: '$MOD_LIVEPATCH': initializing patching transition | |
| livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16) | |
| livepatch: failed to patch 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 | |
| insmod: ERROR: could not insert module test_modules/$MOD_LIVEPATCH.ko: Device or resource busy | |
| % rmmod test_klp_kprobe" | |
| start_test "livepatch interaction with kprobed function without post_handler" | |
| load_mod $MOD_KPROBE has_post_handler=n | |
| load_lp $MOD_LIVEPATCH | |
| unload_mod $MOD_KPROBE | |
| disable_lp $MOD_LIVEPATCH | |
| unload_lp $MOD_LIVEPATCH | |
| check_result "% insmod test_modules/test_klp_kprobe.ko has_post_handler=n | |
| % insmod test_modules/$MOD_LIVEPATCH.ko | |
| livepatch: enabling patch '$MOD_LIVEPATCH' | |
| livepatch: '$MOD_LIVEPATCH': initializing patching transition | |
| livepatch: '$MOD_LIVEPATCH': starting patching transition | |
| livepatch: '$MOD_LIVEPATCH': completing patching transition | |
| livepatch: '$MOD_LIVEPATCH': patching complete | |
| % rmmod test_klp_kprobe | |
| % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled | |
| livepatch: '$MOD_LIVEPATCH': initializing unpatching transition | |
| livepatch: '$MOD_LIVEPATCH': starting unpatching transition | |
| livepatch: '$MOD_LIVEPATCH': completing unpatching transition | |
| livepatch: '$MOD_LIVEPATCH': unpatching complete | |
| % rmmod $MOD_LIVEPATCH" | |
| exit 0 |