mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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2eeb0d457d
Inspired by commit f131d9edc2 ("selftests/lkdtm: Don't clear dmesg
when running tests"), keep a reference dmesg copy when beginning each
test. This way check_result() can compare against the initial copy
rather than relying upon an empty log.
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Reviewed-by: Yannick Cote <ycote@redhat.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20200618181040.21132-2-joe.lawrence@redhat.com
177 lines
7.4 KiB
Bash
Executable File
177 lines
7.4 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2019 SUSE
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. $(dirname $0)/functions.sh
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MOD_LIVEPATCH=test_klp_state
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MOD_LIVEPATCH2=test_klp_state2
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MOD_LIVEPATCH3=test_klp_state3
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setup_config
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# Load and remove a module that modifies the system state
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start_test "system state modification"
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load_lp $MOD_LIVEPATCH
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disable_lp $MOD_LIVEPATCH
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unload_lp $MOD_LIVEPATCH
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check_result "% modprobe $MOD_LIVEPATCH
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livepatch: enabling patch '$MOD_LIVEPATCH'
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livepatch: '$MOD_LIVEPATCH': initializing patching transition
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$MOD_LIVEPATCH: pre_patch_callback: vmlinux
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$MOD_LIVEPATCH: allocate_loglevel_state: allocating space to store console_loglevel
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livepatch: '$MOD_LIVEPATCH': starting patching transition
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livepatch: '$MOD_LIVEPATCH': completing patching transition
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$MOD_LIVEPATCH: post_patch_callback: vmlinux
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$MOD_LIVEPATCH: fix_console_loglevel: fixing console_loglevel
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livepatch: '$MOD_LIVEPATCH': patching complete
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% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled
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livepatch: '$MOD_LIVEPATCH': initializing unpatching transition
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$MOD_LIVEPATCH: pre_unpatch_callback: vmlinux
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$MOD_LIVEPATCH: restore_console_loglevel: restoring console_loglevel
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livepatch: '$MOD_LIVEPATCH': starting unpatching transition
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livepatch: '$MOD_LIVEPATCH': completing unpatching transition
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$MOD_LIVEPATCH: post_unpatch_callback: vmlinux
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$MOD_LIVEPATCH: free_loglevel_state: freeing space for the stored console_loglevel
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livepatch: '$MOD_LIVEPATCH': unpatching complete
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% rmmod $MOD_LIVEPATCH"
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# Take over system state change by a cumulative patch
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start_test "taking over system state modification"
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load_lp $MOD_LIVEPATCH
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load_lp $MOD_LIVEPATCH2
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unload_lp $MOD_LIVEPATCH
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disable_lp $MOD_LIVEPATCH2
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unload_lp $MOD_LIVEPATCH2
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check_result "% modprobe $MOD_LIVEPATCH
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livepatch: enabling patch '$MOD_LIVEPATCH'
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livepatch: '$MOD_LIVEPATCH': initializing patching transition
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$MOD_LIVEPATCH: pre_patch_callback: vmlinux
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$MOD_LIVEPATCH: allocate_loglevel_state: allocating space to store console_loglevel
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livepatch: '$MOD_LIVEPATCH': starting patching transition
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livepatch: '$MOD_LIVEPATCH': completing patching transition
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$MOD_LIVEPATCH: post_patch_callback: vmlinux
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$MOD_LIVEPATCH: fix_console_loglevel: fixing console_loglevel
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livepatch: '$MOD_LIVEPATCH': patching complete
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% modprobe $MOD_LIVEPATCH2
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livepatch: enabling patch '$MOD_LIVEPATCH2'
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livepatch: '$MOD_LIVEPATCH2': initializing patching transition
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$MOD_LIVEPATCH2: pre_patch_callback: vmlinux
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$MOD_LIVEPATCH2: allocate_loglevel_state: space to store console_loglevel already allocated
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livepatch: '$MOD_LIVEPATCH2': starting patching transition
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livepatch: '$MOD_LIVEPATCH2': completing patching transition
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$MOD_LIVEPATCH2: post_patch_callback: vmlinux
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$MOD_LIVEPATCH2: fix_console_loglevel: taking over the console_loglevel change
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livepatch: '$MOD_LIVEPATCH2': patching complete
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% rmmod $MOD_LIVEPATCH
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% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled
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livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition
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$MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux
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$MOD_LIVEPATCH2: restore_console_loglevel: restoring console_loglevel
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livepatch: '$MOD_LIVEPATCH2': starting unpatching transition
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livepatch: '$MOD_LIVEPATCH2': completing unpatching transition
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$MOD_LIVEPATCH2: post_unpatch_callback: vmlinux
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$MOD_LIVEPATCH2: free_loglevel_state: freeing space for the stored console_loglevel
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livepatch: '$MOD_LIVEPATCH2': unpatching complete
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% rmmod $MOD_LIVEPATCH2"
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# Take over system state change by a cumulative patch
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start_test "compatible cumulative livepatches"
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load_lp $MOD_LIVEPATCH2
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load_lp $MOD_LIVEPATCH3
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unload_lp $MOD_LIVEPATCH2
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load_lp $MOD_LIVEPATCH2
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disable_lp $MOD_LIVEPATCH2
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unload_lp $MOD_LIVEPATCH2
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unload_lp $MOD_LIVEPATCH3
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check_result "% modprobe $MOD_LIVEPATCH2
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livepatch: enabling patch '$MOD_LIVEPATCH2'
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livepatch: '$MOD_LIVEPATCH2': initializing patching transition
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$MOD_LIVEPATCH2: pre_patch_callback: vmlinux
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$MOD_LIVEPATCH2: allocate_loglevel_state: allocating space to store console_loglevel
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livepatch: '$MOD_LIVEPATCH2': starting patching transition
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livepatch: '$MOD_LIVEPATCH2': completing patching transition
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$MOD_LIVEPATCH2: post_patch_callback: vmlinux
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$MOD_LIVEPATCH2: fix_console_loglevel: fixing console_loglevel
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livepatch: '$MOD_LIVEPATCH2': patching complete
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% modprobe $MOD_LIVEPATCH3
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livepatch: enabling patch '$MOD_LIVEPATCH3'
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livepatch: '$MOD_LIVEPATCH3': initializing patching transition
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$MOD_LIVEPATCH3: pre_patch_callback: vmlinux
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$MOD_LIVEPATCH3: allocate_loglevel_state: space to store console_loglevel already allocated
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livepatch: '$MOD_LIVEPATCH3': starting patching transition
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livepatch: '$MOD_LIVEPATCH3': completing patching transition
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$MOD_LIVEPATCH3: post_patch_callback: vmlinux
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$MOD_LIVEPATCH3: fix_console_loglevel: taking over the console_loglevel change
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livepatch: '$MOD_LIVEPATCH3': patching complete
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% rmmod $MOD_LIVEPATCH2
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% modprobe $MOD_LIVEPATCH2
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livepatch: enabling patch '$MOD_LIVEPATCH2'
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livepatch: '$MOD_LIVEPATCH2': initializing patching transition
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$MOD_LIVEPATCH2: pre_patch_callback: vmlinux
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$MOD_LIVEPATCH2: allocate_loglevel_state: space to store console_loglevel already allocated
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livepatch: '$MOD_LIVEPATCH2': starting patching transition
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livepatch: '$MOD_LIVEPATCH2': completing patching transition
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$MOD_LIVEPATCH2: post_patch_callback: vmlinux
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$MOD_LIVEPATCH2: fix_console_loglevel: taking over the console_loglevel change
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livepatch: '$MOD_LIVEPATCH2': patching complete
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% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled
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livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition
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$MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux
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$MOD_LIVEPATCH2: restore_console_loglevel: restoring console_loglevel
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livepatch: '$MOD_LIVEPATCH2': starting unpatching transition
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livepatch: '$MOD_LIVEPATCH2': completing unpatching transition
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$MOD_LIVEPATCH2: post_unpatch_callback: vmlinux
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$MOD_LIVEPATCH2: free_loglevel_state: freeing space for the stored console_loglevel
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livepatch: '$MOD_LIVEPATCH2': unpatching complete
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% rmmod $MOD_LIVEPATCH2
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% rmmod $MOD_LIVEPATCH3"
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# Failure caused by incompatible cumulative livepatches
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start_test "incompatible cumulative livepatches"
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load_lp $MOD_LIVEPATCH2
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load_failing_mod $MOD_LIVEPATCH
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disable_lp $MOD_LIVEPATCH2
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unload_lp $MOD_LIVEPATCH2
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check_result "% modprobe $MOD_LIVEPATCH2
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livepatch: enabling patch '$MOD_LIVEPATCH2'
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livepatch: '$MOD_LIVEPATCH2': initializing patching transition
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$MOD_LIVEPATCH2: pre_patch_callback: vmlinux
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$MOD_LIVEPATCH2: allocate_loglevel_state: allocating space to store console_loglevel
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livepatch: '$MOD_LIVEPATCH2': starting patching transition
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livepatch: '$MOD_LIVEPATCH2': completing patching transition
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$MOD_LIVEPATCH2: post_patch_callback: vmlinux
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$MOD_LIVEPATCH2: fix_console_loglevel: fixing console_loglevel
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livepatch: '$MOD_LIVEPATCH2': patching complete
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% modprobe $MOD_LIVEPATCH
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livepatch: Livepatch patch ($MOD_LIVEPATCH) is not compatible with the already installed livepatches.
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modprobe: ERROR: could not insert '$MOD_LIVEPATCH': Invalid argument
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% echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled
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livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition
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$MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux
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$MOD_LIVEPATCH2: restore_console_loglevel: restoring console_loglevel
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livepatch: '$MOD_LIVEPATCH2': starting unpatching transition
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livepatch: '$MOD_LIVEPATCH2': completing unpatching transition
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$MOD_LIVEPATCH2: post_unpatch_callback: vmlinux
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$MOD_LIVEPATCH2: free_loglevel_state: freeing space for the stored console_loglevel
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livepatch: '$MOD_LIVEPATCH2': unpatching complete
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% rmmod $MOD_LIVEPATCH2"
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exit 0
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