| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (C) 2024 SUSE |
| # Author: Michael Vetter <mvetter@suse.com> |
| |
| . $(dirname $0)/functions.sh |
| |
| MOD_LIVEPATCH=test_klp_livepatch |
| MOD_KPROBE=test_klp_kprobe |
| |
| setup_config |
| |
| # Kprobe a function and verify that we can't livepatch that same function |
| # when it uses a post_handler since only one IPMODIFY maybe be registered |
| # to any given function at a time. |
| |
| start_test "livepatch interaction with kprobed function with post_handler" |
| |
| echo 1 > "$SYSFS_KPROBES_DIR/enabled" |
| |
| load_mod $MOD_KPROBE has_post_handler=true |
| load_failing_mod $MOD_LIVEPATCH |
| unload_mod $MOD_KPROBE |
| |
| check_result "% insmod test_modules/test_klp_kprobe.ko has_post_handler=true |
| % insmod test_modules/$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=false |
| load_lp $MOD_LIVEPATCH |
| |
| unload_mod $MOD_KPROBE |
| disable_lp $MOD_LIVEPATCH |
| unload_lp $MOD_LIVEPATCH |
| |
| check_result "% insmod test_modules/test_klp_kprobe.ko has_post_handler=false |
| % insmod test_modules/$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 |
