1 #!/bin/bash 1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (C) 2018 Joe Lawrence <joe.lawrence 3 # Copyright (C) 2018 Joe Lawrence <joe.lawrence@redhat.com>
4 4
5 . $(dirname $0)/functions.sh 5 . $(dirname $0)/functions.sh
6 6
7 MOD_LIVEPATCH1=test_klp_livepatch !! 7 MOD_LIVEPATCH=test_klp_livepatch
8 MOD_LIVEPATCH2=test_klp_syscall <<
9 MOD_LIVEPATCH3=test_klp_callbacks_demo <<
10 MOD_REPLACE=test_klp_atomic_replace 8 MOD_REPLACE=test_klp_atomic_replace
11 9
12 setup_config 10 setup_config
13 11
14 12
15 # - load a livepatch that modifies the output 13 # - load a livepatch that modifies the output from /proc/cmdline and
16 # verify correct behavior 14 # verify correct behavior
17 # - unload the livepatch and make sure the pat 15 # - unload the livepatch and make sure the patch was removed
18 16
19 start_test "basic function patching" 17 start_test "basic function patching"
20 18
21 load_lp $MOD_LIVEPATCH1 !! 19 load_lp $MOD_LIVEPATCH
22 20
23 if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATC !! 21 if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATCH: this has been live patched" ]] ; then
24 echo -e "FAIL\n\n" 22 echo -e "FAIL\n\n"
25 die "livepatch kselftest(s) failed" 23 die "livepatch kselftest(s) failed"
26 fi 24 fi
27 25
28 disable_lp $MOD_LIVEPATCH1 !! 26 disable_lp $MOD_LIVEPATCH
29 unload_lp $MOD_LIVEPATCH1 !! 27 unload_lp $MOD_LIVEPATCH
30 28
31 if [[ "$(cat /proc/cmdline)" == "$MOD_LIVEPATC !! 29 if [[ "$(cat /proc/cmdline)" == "$MOD_LIVEPATCH: this has been live patched" ]] ; then
32 echo -e "FAIL\n\n" 30 echo -e "FAIL\n\n"
33 die "livepatch kselftest(s) failed" 31 die "livepatch kselftest(s) failed"
34 fi 32 fi
35 33
36 check_result "% insmod test_modules/$MOD_LIVEP !! 34 check_result "% modprobe $MOD_LIVEPATCH
37 livepatch: enabling patch '$MOD_LIVEPATCH1' !! 35 livepatch: enabling patch '$MOD_LIVEPATCH'
38 livepatch: '$MOD_LIVEPATCH1': initializing pat !! 36 livepatch: '$MOD_LIVEPATCH': initializing patching transition
39 livepatch: '$MOD_LIVEPATCH1': starting patchin !! 37 livepatch: '$MOD_LIVEPATCH': starting patching transition
40 livepatch: '$MOD_LIVEPATCH1': completing patch !! 38 livepatch: '$MOD_LIVEPATCH': completing patching transition
41 livepatch: '$MOD_LIVEPATCH1': patching complet !! 39 livepatch: '$MOD_LIVEPATCH': patching complete
42 % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATC !! 40 % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled
43 livepatch: '$MOD_LIVEPATCH1': initializing unp !! 41 livepatch: '$MOD_LIVEPATCH': initializing unpatching transition
44 livepatch: '$MOD_LIVEPATCH1': starting unpatch !! 42 livepatch: '$MOD_LIVEPATCH': starting unpatching transition
45 livepatch: '$MOD_LIVEPATCH1': completing unpat !! 43 livepatch: '$MOD_LIVEPATCH': completing unpatching transition
46 livepatch: '$MOD_LIVEPATCH1': unpatching compl !! 44 livepatch: '$MOD_LIVEPATCH': unpatching complete
47 % rmmod $MOD_LIVEPATCH1" !! 45 % rmmod $MOD_LIVEPATCH"
48 46
49 47
50 # - load a livepatch that modifies the output 48 # - load a livepatch that modifies the output from /proc/cmdline and
51 # verify correct behavior 49 # verify correct behavior
52 # - load another livepatch and verify that bot 50 # - load another livepatch and verify that both livepatches are active
53 # - unload the second livepatch and verify tha 51 # - unload the second livepatch and verify that the first is still active
54 # - unload the first livepatch and verify none 52 # - unload the first livepatch and verify none are active
55 53
56 start_test "multiple livepatches" 54 start_test "multiple livepatches"
57 55
58 load_lp $MOD_LIVEPATCH1 !! 56 load_lp $MOD_LIVEPATCH
59 57
60 grep 'live patched' /proc/cmdline > /dev/kmsg 58 grep 'live patched' /proc/cmdline > /dev/kmsg
61 grep 'live patched' /proc/meminfo > /dev/kmsg 59 grep 'live patched' /proc/meminfo > /dev/kmsg
62 60
63 load_lp $MOD_REPLACE replace=0 61 load_lp $MOD_REPLACE replace=0
64 62
65 grep 'live patched' /proc/cmdline > /dev/kmsg 63 grep 'live patched' /proc/cmdline > /dev/kmsg
66 grep 'live patched' /proc/meminfo > /dev/kmsg 64 grep 'live patched' /proc/meminfo > /dev/kmsg
67 65
68 disable_lp $MOD_REPLACE 66 disable_lp $MOD_REPLACE
69 unload_lp $MOD_REPLACE 67 unload_lp $MOD_REPLACE
70 68
71 grep 'live patched' /proc/cmdline > /dev/kmsg 69 grep 'live patched' /proc/cmdline > /dev/kmsg
72 grep 'live patched' /proc/meminfo > /dev/kmsg 70 grep 'live patched' /proc/meminfo > /dev/kmsg
73 71
74 disable_lp $MOD_LIVEPATCH1 !! 72 disable_lp $MOD_LIVEPATCH
75 unload_lp $MOD_LIVEPATCH1 !! 73 unload_lp $MOD_LIVEPATCH
76 74
77 grep 'live patched' /proc/cmdline > /dev/kmsg 75 grep 'live patched' /proc/cmdline > /dev/kmsg
78 grep 'live patched' /proc/meminfo > /dev/kmsg 76 grep 'live patched' /proc/meminfo > /dev/kmsg
79 77
80 check_result "% insmod test_modules/$MOD_LIVEP !! 78 check_result "% modprobe $MOD_LIVEPATCH
81 livepatch: enabling patch '$MOD_LIVEPATCH1' !! 79 livepatch: enabling patch '$MOD_LIVEPATCH'
82 livepatch: '$MOD_LIVEPATCH1': initializing pat !! 80 livepatch: '$MOD_LIVEPATCH': initializing patching transition
83 livepatch: '$MOD_LIVEPATCH1': starting patchin !! 81 livepatch: '$MOD_LIVEPATCH': starting patching transition
84 livepatch: '$MOD_LIVEPATCH1': completing patch !! 82 livepatch: '$MOD_LIVEPATCH': completing patching transition
85 livepatch: '$MOD_LIVEPATCH1': patching complet !! 83 livepatch: '$MOD_LIVEPATCH': patching complete
86 $MOD_LIVEPATCH1: this has been live patched !! 84 $MOD_LIVEPATCH: this has been live patched
87 % insmod test_modules/$MOD_REPLACE.ko replace= !! 85 % modprobe $MOD_REPLACE replace=0
88 livepatch: enabling patch '$MOD_REPLACE' 86 livepatch: enabling patch '$MOD_REPLACE'
89 livepatch: '$MOD_REPLACE': initializing patchi 87 livepatch: '$MOD_REPLACE': initializing patching transition
90 livepatch: '$MOD_REPLACE': starting patching t 88 livepatch: '$MOD_REPLACE': starting patching transition
91 livepatch: '$MOD_REPLACE': completing patching 89 livepatch: '$MOD_REPLACE': completing patching transition
92 livepatch: '$MOD_REPLACE': patching complete 90 livepatch: '$MOD_REPLACE': patching complete
93 $MOD_LIVEPATCH1: this has been live patched !! 91 $MOD_LIVEPATCH: this has been live patched
94 $MOD_REPLACE: this has been live patched 92 $MOD_REPLACE: this has been live patched
95 % echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/ 93 % echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/enabled
96 livepatch: '$MOD_REPLACE': initializing unpatc 94 livepatch: '$MOD_REPLACE': initializing unpatching transition
97 livepatch: '$MOD_REPLACE': starting unpatching 95 livepatch: '$MOD_REPLACE': starting unpatching transition
98 livepatch: '$MOD_REPLACE': completing unpatchi 96 livepatch: '$MOD_REPLACE': completing unpatching transition
99 livepatch: '$MOD_REPLACE': unpatching complete 97 livepatch: '$MOD_REPLACE': unpatching complete
100 % rmmod $MOD_REPLACE 98 % rmmod $MOD_REPLACE
101 $MOD_LIVEPATCH1: this has been live patched !! 99 $MOD_LIVEPATCH: this has been live patched
102 % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATC !! 100 % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled
103 livepatch: '$MOD_LIVEPATCH1': initializing unp !! 101 livepatch: '$MOD_LIVEPATCH': initializing unpatching transition
104 livepatch: '$MOD_LIVEPATCH1': starting unpatch !! 102 livepatch: '$MOD_LIVEPATCH': starting unpatching transition
105 livepatch: '$MOD_LIVEPATCH1': completing unpat !! 103 livepatch: '$MOD_LIVEPATCH': completing unpatching transition
106 livepatch: '$MOD_LIVEPATCH1': unpatching compl !! 104 livepatch: '$MOD_LIVEPATCH': unpatching complete
107 % rmmod $MOD_LIVEPATCH1" !! 105 % rmmod $MOD_LIVEPATCH"
108 106
109 107
110 # - load a livepatch that modifies the output 108 # - load a livepatch that modifies the output from /proc/cmdline and
111 # verify correct behavior 109 # verify correct behavior
112 # - load two additional livepatches and check !! 110 # - load an atomic replace livepatch and verify that only the second is active
113 # applied !! 111 # - remove the first livepatch and verify that the atomic replace livepatch
114 # - load an atomic replace livepatch and check !! 112 # is still active
115 # disabled <<
116 # - remove all livepatches besides the atomic <<
117 # atomic replace livepatch is still active <<
118 # - remove the atomic replace livepatch and ve 113 # - remove the atomic replace livepatch and verify that none are active
119 114
120 start_test "atomic replace livepatch" 115 start_test "atomic replace livepatch"
121 116
122 load_lp $MOD_LIVEPATCH1 !! 117 load_lp $MOD_LIVEPATCH
123 118
124 grep 'live patched' /proc/cmdline > /dev/kmsg 119 grep 'live patched' /proc/cmdline > /dev/kmsg
125 grep 'live patched' /proc/meminfo > /dev/kmsg 120 grep 'live patched' /proc/meminfo > /dev/kmsg
126 121
127 for mod in $MOD_LIVEPATCH2 $MOD_LIVEPATCH3; do <<
128 load_lp "$mod" <<
129 done <<
130 <<
131 mods=(/sys/kernel/livepatch/*) <<
132 nmods=${#mods[@]} <<
133 if [ "$nmods" -ne 3 ]; then <<
134 die "Expecting three modules listed, f <<
135 fi <<
136 <<
137 load_lp $MOD_REPLACE replace=1 122 load_lp $MOD_REPLACE replace=1
138 123
139 grep 'live patched' /proc/cmdline > /dev/kmsg 124 grep 'live patched' /proc/cmdline > /dev/kmsg
140 grep 'live patched' /proc/meminfo > /dev/kmsg 125 grep 'live patched' /proc/meminfo > /dev/kmsg
141 126
142 mods=(/sys/kernel/livepatch/*) !! 127 unload_lp $MOD_LIVEPATCH
143 nmods=${#mods[@]} <<
144 if [ "$nmods" -ne 1 ]; then <<
145 die "Expecting only one moduled listed <<
146 fi <<
147 <<
148 # These modules were disabled by the atomic re <<
149 for mod in $MOD_LIVEPATCH3 $MOD_LIVEPATCH2 $MO <<
150 unload_lp "$mod" <<
151 done <<
152 128
153 grep 'live patched' /proc/cmdline > /dev/kmsg 129 grep 'live patched' /proc/cmdline > /dev/kmsg
154 grep 'live patched' /proc/meminfo > /dev/kmsg 130 grep 'live patched' /proc/meminfo > /dev/kmsg
155 131
156 disable_lp $MOD_REPLACE 132 disable_lp $MOD_REPLACE
157 unload_lp $MOD_REPLACE 133 unload_lp $MOD_REPLACE
158 134
159 grep 'live patched' /proc/cmdline > /dev/kmsg 135 grep 'live patched' /proc/cmdline > /dev/kmsg
160 grep 'live patched' /proc/meminfo > /dev/kmsg 136 grep 'live patched' /proc/meminfo > /dev/kmsg
161 137
162 check_result "% insmod test_modules/$MOD_LIVEP !! 138 check_result "% modprobe $MOD_LIVEPATCH
163 livepatch: enabling patch '$MOD_LIVEPATCH1' !! 139 livepatch: enabling patch '$MOD_LIVEPATCH'
164 livepatch: '$MOD_LIVEPATCH1': initializing pat !! 140 livepatch: '$MOD_LIVEPATCH': initializing patching transition
165 livepatch: '$MOD_LIVEPATCH1': starting patchin !! 141 livepatch: '$MOD_LIVEPATCH': starting patching transition
166 livepatch: '$MOD_LIVEPATCH1': completing patch !! 142 livepatch: '$MOD_LIVEPATCH': completing patching transition
167 livepatch: '$MOD_LIVEPATCH1': patching complet !! 143 livepatch: '$MOD_LIVEPATCH': patching complete
168 $MOD_LIVEPATCH1: this has been live patched !! 144 $MOD_LIVEPATCH: this has been live patched
169 % insmod test_modules/$MOD_LIVEPATCH2.ko !! 145 % modprobe $MOD_REPLACE replace=1
170 livepatch: enabling patch '$MOD_LIVEPATCH2' <<
171 livepatch: '$MOD_LIVEPATCH2': initializing pat <<
172 livepatch: '$MOD_LIVEPATCH2': starting patchin <<
173 livepatch: '$MOD_LIVEPATCH2': completing patch <<
174 livepatch: '$MOD_LIVEPATCH2': patching complet <<
175 % insmod test_modules/$MOD_LIVEPATCH3.ko <<
176 livepatch: enabling patch '$MOD_LIVEPATCH3' <<
177 livepatch: '$MOD_LIVEPATCH3': initializing pat <<
178 $MOD_LIVEPATCH3: pre_patch_callback: vmlinux <<
179 livepatch: '$MOD_LIVEPATCH3': starting patchin <<
180 livepatch: '$MOD_LIVEPATCH3': completing patch <<
181 $MOD_LIVEPATCH3: post_patch_callback: vmlinux <<
182 livepatch: '$MOD_LIVEPATCH3': patching complet <<
183 % insmod test_modules/$MOD_REPLACE.ko replace= <<
184 livepatch: enabling patch '$MOD_REPLACE' 146 livepatch: enabling patch '$MOD_REPLACE'
185 livepatch: '$MOD_REPLACE': initializing patchi 147 livepatch: '$MOD_REPLACE': initializing patching transition
186 livepatch: '$MOD_REPLACE': starting patching t 148 livepatch: '$MOD_REPLACE': starting patching transition
187 livepatch: '$MOD_REPLACE': completing patching 149 livepatch: '$MOD_REPLACE': completing patching transition
188 livepatch: '$MOD_REPLACE': patching complete 150 livepatch: '$MOD_REPLACE': patching complete
189 $MOD_REPLACE: this has been live patched 151 $MOD_REPLACE: this has been live patched
190 % rmmod $MOD_LIVEPATCH3 !! 152 % rmmod $MOD_LIVEPATCH
191 % rmmod $MOD_LIVEPATCH2 <<
192 % rmmod $MOD_LIVEPATCH1 <<
193 $MOD_REPLACE: this has been live patched 153 $MOD_REPLACE: this has been live patched
194 % echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/ 154 % echo 0 > /sys/kernel/livepatch/$MOD_REPLACE/enabled
195 livepatch: '$MOD_REPLACE': initializing unpatc 155 livepatch: '$MOD_REPLACE': initializing unpatching transition
196 livepatch: '$MOD_REPLACE': starting unpatching 156 livepatch: '$MOD_REPLACE': starting unpatching transition
197 livepatch: '$MOD_REPLACE': completing unpatchi 157 livepatch: '$MOD_REPLACE': completing unpatching transition
198 livepatch: '$MOD_REPLACE': unpatching complete 158 livepatch: '$MOD_REPLACE': unpatching complete
199 % rmmod $MOD_REPLACE" 159 % rmmod $MOD_REPLACE"
200 160
201 161
202 exit 0 162 exit 0
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