tools/testing/selftests/livepatch/test-state.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (C) 2019 SUSE
   4
   5 . $(dirname $0)/functions.sh
   6
   7 MOD_LIVEPATCH=test_klp_state
   8 MOD_LIVEPATCH2=test_klp_state2
   9 MOD_LIVEPATCH3=test_klp_state3
  10
  11 setup_config
  12
  13 # TEST: Loading and removing a module that modifies the system state
  14
  15 echo -n "TEST: system state modification ... "
  16 dmesg -C
  17
  18 load_lp $MOD_LIVEPATCH
  19 disable_lp $MOD_LIVEPATCH
  20 unload_lp $MOD_LIVEPATCH
  21
  22 check_result "% modprobe $MOD_LIVEPATCH
  23 livepatch: enabling patch '$MOD_LIVEPATCH'
  24 livepatch: '$MOD_LIVEPATCH': initializing patching transition
  25 $MOD_LIVEPATCH: pre_patch_callback: vmlinux
  26 $MOD_LIVEPATCH: allocate_loglevel_state: allocating space to store console_loglevel
  27 livepatch: '$MOD_LIVEPATCH': starting patching transition
  28 livepatch: '$MOD_LIVEPATCH': completing patching transition
  29 $MOD_LIVEPATCH: post_patch_callback: vmlinux
  30 $MOD_LIVEPATCH: fix_console_loglevel: fixing console_loglevel
  31 livepatch: '$MOD_LIVEPATCH': patching complete
  32 % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled
  33 livepatch: '$MOD_LIVEPATCH': initializing unpatching transition
  34 $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux
  35 $MOD_LIVEPATCH: restore_console_loglevel: restoring console_loglevel
  36 livepatch: '$MOD_LIVEPATCH': starting unpatching transition
  37 livepatch: '$MOD_LIVEPATCH': completing unpatching transition
  38 $MOD_LIVEPATCH: post_unpatch_callback: vmlinux
  39 $MOD_LIVEPATCH: free_loglevel_state: freeing space for the stored console_loglevel
  40 livepatch: '$MOD_LIVEPATCH': unpatching complete
  41 % rmmod $MOD_LIVEPATCH"
  42
  43
  44 # TEST: Take over system state change by a cumulative patch
  45
  46 echo -n "TEST: taking over system state modification ... "
  47 dmesg -C
  48
  49 load_lp $MOD_LIVEPATCH
  50 load_lp $MOD_LIVEPATCH2
  51 unload_lp $MOD_LIVEPATCH
  52 disable_lp $MOD_LIVEPATCH2
  53 unload_lp $MOD_LIVEPATCH2
  54
  55 check_result "% modprobe $MOD_LIVEPATCH
  56 livepatch: enabling patch '$MOD_LIVEPATCH'
  57 livepatch: '$MOD_LIVEPATCH': initializing patching transition
  58 $MOD_LIVEPATCH: pre_patch_callback: vmlinux
  59 $MOD_LIVEPATCH: allocate_loglevel_state: allocating space to store console_loglevel
  60 livepatch: '$MOD_LIVEPATCH': starting patching transition
  61 livepatch: '$MOD_LIVEPATCH': completing patching transition
  62 $MOD_LIVEPATCH: post_patch_callback: vmlinux
  63 $MOD_LIVEPATCH: fix_console_loglevel: fixing console_loglevel
  64 livepatch: '$MOD_LIVEPATCH': patching complete
  65 % modprobe $MOD_LIVEPATCH2
  66 livepatch: enabling patch '$MOD_LIVEPATCH2'
  67 livepatch: '$MOD_LIVEPATCH2': initializing patching transition
  68 $MOD_LIVEPATCH2: pre_patch_callback: vmlinux
  69 $MOD_LIVEPATCH2: allocate_loglevel_state: space to store console_loglevel already allocated
  70 livepatch: '$MOD_LIVEPATCH2': starting patching transition
  71 livepatch: '$MOD_LIVEPATCH2': completing patching transition
  72 $MOD_LIVEPATCH2: post_patch_callback: vmlinux
  73 $MOD_LIVEPATCH2: fix_console_loglevel: taking over the console_loglevel change
  74 livepatch: '$MOD_LIVEPATCH2': patching complete
  75 % rmmod $MOD_LIVEPATCH
  76 % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled
  77 livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition
  78 $MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux
  79 $MOD_LIVEPATCH2: restore_console_loglevel: restoring console_loglevel
  80 livepatch: '$MOD_LIVEPATCH2': starting unpatching transition
  81 livepatch: '$MOD_LIVEPATCH2': completing unpatching transition
  82 $MOD_LIVEPATCH2: post_unpatch_callback: vmlinux
  83 $MOD_LIVEPATCH2: free_loglevel_state: freeing space for the stored console_loglevel
  84 livepatch: '$MOD_LIVEPATCH2': unpatching complete
  85 % rmmod $MOD_LIVEPATCH2"
  86
  87
  88 # TEST: Take over system state change by a cumulative patch
  89
  90 echo -n "TEST: compatible cumulative livepatches ... "
  91 dmesg -C
  92
  93 load_lp $MOD_LIVEPATCH2
  94 load_lp $MOD_LIVEPATCH3
  95 unload_lp $MOD_LIVEPATCH2
  96 load_lp $MOD_LIVEPATCH2
  97 disable_lp $MOD_LIVEPATCH2
  98 unload_lp $MOD_LIVEPATCH2
  99 unload_lp $MOD_LIVEPATCH3
 100
 101 check_result "% modprobe $MOD_LIVEPATCH2
 102 livepatch: enabling patch '$MOD_LIVEPATCH2'
 103 livepatch: '$MOD_LIVEPATCH2': initializing patching transition
 104 $MOD_LIVEPATCH2: pre_patch_callback: vmlinux
 105 $MOD_LIVEPATCH2: allocate_loglevel_state: allocating space to store console_loglevel
 106 livepatch: '$MOD_LIVEPATCH2': starting patching transition
 107 livepatch: '$MOD_LIVEPATCH2': completing patching transition
 108 $MOD_LIVEPATCH2: post_patch_callback: vmlinux
 109 $MOD_LIVEPATCH2: fix_console_loglevel: fixing console_loglevel
 110 livepatch: '$MOD_LIVEPATCH2': patching complete
 111 % modprobe $MOD_LIVEPATCH3
 112 livepatch: enabling patch '$MOD_LIVEPATCH3'
 113 livepatch: '$MOD_LIVEPATCH3': initializing patching transition
 114 $MOD_LIVEPATCH3: pre_patch_callback: vmlinux
 115 $MOD_LIVEPATCH3: allocate_loglevel_state: space to store console_loglevel already allocated
 116 livepatch: '$MOD_LIVEPATCH3': starting patching transition
 117 livepatch: '$MOD_LIVEPATCH3': completing patching transition
 118 $MOD_LIVEPATCH3: post_patch_callback: vmlinux
 119 $MOD_LIVEPATCH3: fix_console_loglevel: taking over the console_loglevel change
 120 livepatch: '$MOD_LIVEPATCH3': patching complete
 121 % rmmod $MOD_LIVEPATCH2
 122 % modprobe $MOD_LIVEPATCH2
 123 livepatch: enabling patch '$MOD_LIVEPATCH2'
 124 livepatch: '$MOD_LIVEPATCH2': initializing patching transition
 125 $MOD_LIVEPATCH2: pre_patch_callback: vmlinux
 126 $MOD_LIVEPATCH2: allocate_loglevel_state: space to store console_loglevel already allocated
 127 livepatch: '$MOD_LIVEPATCH2': starting patching transition
 128 livepatch: '$MOD_LIVEPATCH2': completing patching transition
 129 $MOD_LIVEPATCH2: post_patch_callback: vmlinux
 130 $MOD_LIVEPATCH2: fix_console_loglevel: taking over the console_loglevel change
 131 livepatch: '$MOD_LIVEPATCH2': patching complete
 132 % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled
 133 livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition
 134 $MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux
 135 $MOD_LIVEPATCH2: restore_console_loglevel: restoring console_loglevel
 136 livepatch: '$MOD_LIVEPATCH2': starting unpatching transition
 137 livepatch: '$MOD_LIVEPATCH2': completing unpatching transition
 138 $MOD_LIVEPATCH2: post_unpatch_callback: vmlinux
 139 $MOD_LIVEPATCH2: free_loglevel_state: freeing space for the stored console_loglevel
 140 livepatch: '$MOD_LIVEPATCH2': unpatching complete
 141 % rmmod $MOD_LIVEPATCH2
 142 % rmmod $MOD_LIVEPATCH3"
 143
 144
 145 # TEST: Failure caused by incompatible cumulative livepatches
 146
 147 echo -n "TEST: incompatible cumulative livepatches ... "
 148 dmesg -C
 149
 150 load_lp $MOD_LIVEPATCH2
 151 load_failing_mod $MOD_LIVEPATCH
 152 disable_lp $MOD_LIVEPATCH2
 153 unload_lp $MOD_LIVEPATCH2
 154
 155 check_result "% modprobe $MOD_LIVEPATCH2
 156 livepatch: enabling patch '$MOD_LIVEPATCH2'
 157 livepatch: '$MOD_LIVEPATCH2': initializing patching transition
 158 $MOD_LIVEPATCH2: pre_patch_callback: vmlinux
 159 $MOD_LIVEPATCH2: allocate_loglevel_state: allocating space to store console_loglevel
 160 livepatch: '$MOD_LIVEPATCH2': starting patching transition
 161 livepatch: '$MOD_LIVEPATCH2': completing patching transition
 162 $MOD_LIVEPATCH2: post_patch_callback: vmlinux
 163 $MOD_LIVEPATCH2: fix_console_loglevel: fixing console_loglevel
 164 livepatch: '$MOD_LIVEPATCH2': patching complete
 165 % modprobe $MOD_LIVEPATCH
 166 livepatch: Livepatch patch ($MOD_LIVEPATCH) is not compatible with the already installed livepatches.
 167 modprobe: ERROR: could not insert '$MOD_LIVEPATCH': Invalid argument
 168 % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled
 169 livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition
 170 $MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux
 171 $MOD_LIVEPATCH2: restore_console_loglevel: restoring console_loglevel
 172 livepatch: '$MOD_LIVEPATCH2': starting unpatching transition
 173 livepatch: '$MOD_LIVEPATCH2': completing unpatching transition
 174 $MOD_LIVEPATCH2: post_unpatch_callback: vmlinux
 175 $MOD_LIVEPATCH2: free_loglevel_state: freeing space for the stored console_loglevel
 176 livepatch: '$MOD_LIVEPATCH2': unpatching complete
 177 % rmmod $MOD_LIVEPATCH2"
 178
 179 exit 0