#!/bin/bash# SPDX-License-Identifier: GPL-2.0# Copyright (C) 2024 SUSE# Author: Michael Vetter <mvetter@suse.com> . $(dirname $0)/functions.sh grep -q kprobe_ftrace_ops /proc/kallsyms || skip "test-kprobe requires CONFIG_KPROBES_ON_FTRACE" MOD_LIVEPATCH=test_klp_livepatchMOD_KPROBE=test_klp_kprobe setup_config # Kprobe a function and verify that we can't livepatch that same function# when it uses a post_handler since only one IPMODIFY maybe be registered# to any given function at a time. start_test "livepatch interaction with kprobed function with post_handler" echo 1 > "$SYSFS_KPROBES_DIR/enabled" load_mod $MOD_KPROBE has_post_handler=yload_failing_mod $MOD_LIVEPATCHunload_mod $MOD_KPROBE check_result "% insmod test_modules/test_klp_kprobe.ko has_post_handler=y% insmod test_modules/$MOD_LIVEPATCH.kolivepatch: enabling patch '$MOD_LIVEPATCH'livepatch: '$MOD_LIVEPATCH': initializing patching transitionlivepatch: 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 unpatchlivepatch: '$MOD_LIVEPATCH': completing unpatching transitionlivepatch: '$MOD_LIVEPATCH': unpatching completeinsmod: 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=nload_lp $MOD_LIVEPATCH unload_mod $MOD_KPROBEdisable_lp $MOD_LIVEPATCHunload_lp $MOD_LIVEPATCH check_result "% insmod test_modules/test_klp_kprobe.ko has_post_handler=n% insmod test_modules/$MOD_LIVEPATCH.kolivepatch: enabling patch '$MOD_LIVEPATCH'livepatch: '$MOD_LIVEPATCH': initializing patching transitionlivepatch: '$MOD_LIVEPATCH': starting patching transitionlivepatch: '$MOD_LIVEPATCH': completing patching transitionlivepatch: '$MOD_LIVEPATCH': patching complete% rmmod test_klp_kprobe% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabledlivepatch: '$MOD_LIVEPATCH': initializing unpatching transitionlivepatch: '$MOD_LIVEPATCH': starting unpatching transitionlivepatch: '$MOD_LIVEPATCH': completing unpatching transitionlivepatch: '$MOD_LIVEPATCH': unpatching complete% rmmod $MOD_LIVEPATCH" exit 0