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| author | Michael Vetter <mvetter@suse.com> | 2024-10-17 23:01:32 +0300 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2024-10-22 18:13:11 +0300 |
| commit | 62597edf6340191511bdf9a7f64fa315ddc58805 (patch) | |
| tree | 823af88954dcf55492e8aa424db6b29e5dfc466a /tools/testing/selftests/livepatch/Makefile | |
| parent | 59766286b6e54f8ad334dcef7d2e743b7550df0e (diff) | |
| download | linux-62597edf6340191511bdf9a7f64fa315ddc58805.tar.xz | |
selftests: livepatch: test livepatching a kprobed function
The test proves that a function that is being kprobed and uses a
post_handler cannot be livepatched.
Only one ftrace_ops with FTRACE_OPS_FL_IPMODIFY set may be registered
to any given function at a time.
Note that the conflicting kprobe could not be created using the
tracefs interface, see Documentation/trace/kprobetrace.rst.
This interface uses only the pre_handler(), see alloc_trace_kprobe().
But FTRACE_OPS_FL_IPMODIFY is used only when the kprobe is using a
post_handler, see arm_kprobe_ftrace().
Signed-off-by: Michael Vetter <mvetter@suse.com>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Joe Lawrence <joe.lawrence@redhat.com>
Tested-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Tested-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20241017200132.21946-4-mvetter@suse.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
Diffstat (limited to 'tools/testing/selftests/livepatch/Makefile')
| -rw-r--r-- | tools/testing/selftests/livepatch/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/testing/selftests/livepatch/Makefile b/tools/testing/selftests/livepatch/Makefile index 35418a4790be..a080eb54a215 100644 --- a/tools/testing/selftests/livepatch/Makefile +++ b/tools/testing/selftests/livepatch/Makefile @@ -10,7 +10,8 @@ TEST_PROGS := \ test-state.sh \ test-ftrace.sh \ test-sysfs.sh \ - test-syscall.sh + test-syscall.sh \ + test-kprobe.sh TEST_FILES := settings |