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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-28 14:38:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-28 14:38:31 -0700 |
| commit | d111c9f0344a5e2454726553c663d25e24e38555 (patch) | |
| tree | dfc43f93831782d5e1e99f157a6fe37f81f10abe /tools | |
| parent | a701f370b521b2ed0654a9da7cf424b3ff8fa73d (diff) | |
| parent | e7dbd4d5369df7d101d6fde5595229df7060939d (diff) | |
Merge tag 'livepatching-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching
Pull livepatching updates from Petr Mladek:
- Forced transitions block only to-be-removed livepatches [Chengming]
- Detect when ftrace handler could not be disabled in self-tests [David]
- Calm down warning from a static analyzer [Tom]
* tag 'livepatching-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
livepatch: Reorder to use before freeing a pointer
livepatch: Don't block removal of patches that are safe to unload
livepatch: Skip livepatch tests if ftrace cannot be configured
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/livepatch/functions.sh | 22 | ||||
| -rwxr-xr-x | tools/testing/selftests/livepatch/test-ftrace.sh | 3 |
2 files changed, 21 insertions, 4 deletions
diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing/selftests/livepatch/functions.sh index 846c7ed71556..9230b869371d 100644 --- a/tools/testing/selftests/livepatch/functions.sh +++ b/tools/testing/selftests/livepatch/functions.sh @@ -75,9 +75,25 @@ function set_dynamic_debug() { } function set_ftrace_enabled() { - result=$(sysctl -q kernel.ftrace_enabled="$1" 2>&1 && \ - sysctl kernel.ftrace_enabled 2>&1) - echo "livepatch: $result" > /dev/kmsg + local can_fail=0 + if [[ "$1" == "--fail" ]] ; then + can_fail=1 + shift + fi + + local err=$(sysctl -q kernel.ftrace_enabled="$1" 2>&1) + local result=$(sysctl --values kernel.ftrace_enabled) + + if [[ "$result" != "$1" ]] ; then + if [[ $can_fail -eq 1 ]] ; then + echo "livepatch: $err" > /dev/kmsg + return + fi + + skip "failed to set kernel.ftrace_enabled = $1" + fi + + echo "livepatch: kernel.ftrace_enabled = $result" > /dev/kmsg } function cleanup() { diff --git a/tools/testing/selftests/livepatch/test-ftrace.sh b/tools/testing/selftests/livepatch/test-ftrace.sh index 552e165512f4..825540a5194d 100755 --- a/tools/testing/selftests/livepatch/test-ftrace.sh +++ b/tools/testing/selftests/livepatch/test-ftrace.sh @@ -25,7 +25,8 @@ if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATCH: this has been live patched" ]] die "livepatch kselftest(s) failed" fi -set_ftrace_enabled 0 +# Check that ftrace could not get disabled when a livepatch is enabled +set_ftrace_enabled --fail 0 if [[ "$(cat /proc/cmdline)" != "$MOD_LIVEPATCH: this has been live patched" ]] ; then echo -e "FAIL\n\n" die "livepatch kselftest(s) failed" |