1 #!/bin/bash 1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (C) 2019 Joe Lawrence <joe.lawrence 3 # Copyright (C) 2019 Joe Lawrence <joe.lawrence@redhat.com>
4 4
5 . $(dirname $0)/functions.sh 5 . $(dirname $0)/functions.sh
6 6
7 MOD_LIVEPATCH=test_klp_livepatch 7 MOD_LIVEPATCH=test_klp_livepatch
8 8
9 setup_config 9 setup_config
10 10
11 11
12 # - turn ftrace_enabled OFF and verify livepat 12 # - turn ftrace_enabled OFF and verify livepatches can't load
13 # - turn ftrace_enabled ON and verify livepatc 13 # - turn ftrace_enabled ON and verify livepatch can load
14 # - verify that ftrace_enabled can't be turned 14 # - verify that ftrace_enabled can't be turned OFF while a livepatch is loaded
15 15
16 start_test "livepatch interaction with ftrace_ 16 start_test "livepatch interaction with ftrace_enabled sysctl"
17 17
18 set_ftrace_enabled 0 18 set_ftrace_enabled 0
19 load_failing_mod $MOD_LIVEPATCH 19 load_failing_mod $MOD_LIVEPATCH
20 20
21 set_ftrace_enabled 1 21 set_ftrace_enabled 1
22 load_lp $MOD_LIVEPATCH 22 load_lp $MOD_LIVEPATCH
23 if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATC 23 if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATCH: this has been live patched" ]] ; then
24 echo -e "FAIL\n\n" 24 echo -e "FAIL\n\n"
25 die "livepatch kselftest(s) failed" 25 die "livepatch kselftest(s) failed"
26 fi 26 fi
27 27
28 # Check that ftrace could not get disabled whe 28 # Check that ftrace could not get disabled when a livepatch is enabled
29 set_ftrace_enabled --fail 0 29 set_ftrace_enabled --fail 0
30 if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATC 30 if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATCH: this has been live patched" ]] ; then
31 echo -e "FAIL\n\n" 31 echo -e "FAIL\n\n"
32 die "livepatch kselftest(s) failed" 32 die "livepatch kselftest(s) failed"
33 fi 33 fi
34 disable_lp $MOD_LIVEPATCH 34 disable_lp $MOD_LIVEPATCH
35 unload_lp $MOD_LIVEPATCH 35 unload_lp $MOD_LIVEPATCH
36 36
37 check_result "livepatch: kernel.ftrace_enabled 37 check_result "livepatch: kernel.ftrace_enabled = 0
38 % insmod test_modules/$MOD_LIVEPATCH.ko 38 % insmod test_modules/$MOD_LIVEPATCH.ko
39 livepatch: enabling patch '$MOD_LIVEPATCH' 39 livepatch: enabling patch '$MOD_LIVEPATCH'
40 livepatch: '$MOD_LIVEPATCH': initializing patc 40 livepatch: '$MOD_LIVEPATCH': initializing patching transition
41 livepatch: failed to register ftrace handler f 41 livepatch: failed to register ftrace handler for function 'cmdline_proc_show' (-16)
42 livepatch: failed to patch object 'vmlinux' 42 livepatch: failed to patch object 'vmlinux'
43 livepatch: failed to enable patch '$MOD_LIVEPA 43 livepatch: failed to enable patch '$MOD_LIVEPATCH'
44 livepatch: '$MOD_LIVEPATCH': canceling patchin 44 livepatch: '$MOD_LIVEPATCH': canceling patching transition, going to unpatch
45 livepatch: '$MOD_LIVEPATCH': completing unpatc 45 livepatch: '$MOD_LIVEPATCH': completing unpatching transition
46 livepatch: '$MOD_LIVEPATCH': unpatching comple 46 livepatch: '$MOD_LIVEPATCH': unpatching complete
47 insmod: ERROR: could not insert module test_mo 47 insmod: ERROR: could not insert module test_modules/$MOD_LIVEPATCH.ko: Device or resource busy
48 livepatch: kernel.ftrace_enabled = 1 48 livepatch: kernel.ftrace_enabled = 1
49 % insmod test_modules/$MOD_LIVEPATCH.ko 49 % insmod test_modules/$MOD_LIVEPATCH.ko
50 livepatch: enabling patch '$MOD_LIVEPATCH' 50 livepatch: enabling patch '$MOD_LIVEPATCH'
51 livepatch: '$MOD_LIVEPATCH': initializing patc 51 livepatch: '$MOD_LIVEPATCH': initializing patching transition
52 livepatch: '$MOD_LIVEPATCH': starting patching 52 livepatch: '$MOD_LIVEPATCH': starting patching transition
53 livepatch: '$MOD_LIVEPATCH': completing patchi 53 livepatch: '$MOD_LIVEPATCH': completing patching transition
54 livepatch: '$MOD_LIVEPATCH': patching complete 54 livepatch: '$MOD_LIVEPATCH': patching complete
55 livepatch: sysctl: setting key \"kernel.ftrace 55 livepatch: sysctl: setting key \"kernel.ftrace_enabled\": Device or resource busy
56 % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATC 56 % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled
57 livepatch: '$MOD_LIVEPATCH': initializing unpa 57 livepatch: '$MOD_LIVEPATCH': initializing unpatching transition
58 livepatch: '$MOD_LIVEPATCH': starting unpatchi 58 livepatch: '$MOD_LIVEPATCH': starting unpatching transition
59 livepatch: '$MOD_LIVEPATCH': completing unpatc 59 livepatch: '$MOD_LIVEPATCH': completing unpatching transition
60 livepatch: '$MOD_LIVEPATCH': unpatching comple 60 livepatch: '$MOD_LIVEPATCH': unpatching complete
61 % rmmod $MOD_LIVEPATCH" 61 % rmmod $MOD_LIVEPATCH"
62 62
63 63
64 exit 0 64 exit 0
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