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62597edf63
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> |
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| .. | ||
| Makefile | ||
| test_klp_atomic_replace.c | ||
| test_klp_callbacks_busy.c | ||
| test_klp_callbacks_demo.c | ||
| test_klp_callbacks_demo2.c | ||
| test_klp_callbacks_mod.c | ||
| test_klp_kprobe.c | ||
| test_klp_livepatch.c | ||
| test_klp_shadow_vars.c | ||
| test_klp_state.c | ||
| test_klp_state2.c | ||
| test_klp_state3.c | ||
| test_klp_syscall.c | ||