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