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tracing/kprobe: Make trace_kprobe's module callback called after jump_label update

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Make sure the trace_kprobe's module notifer callback function is called
after jump_label's callback is called. Since the trace_kprobe's callback
eventually checks jump_label address during registering new kprobe on
the loading module, jump_label must be updated before this registration
happens.

Link: https://lore.kernel.org/all/173387585556.995044.3157941002975446119.stgit@devnote2/

Fixes: 614243181050 ("tracing/kprobes: Support module init function probing")
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
This commit is contained in:
Masami Hiramatsu (Google) 2024-12-11 09:10:55 +09:00
parent 494b332064
commit d685d55dfc
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/trace_kprobe.c
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@ -725,7 +725,7 @@ static int trace_kprobe_module_callback(struct notifier_block *nb,
static struct notifier_block trace_kprobe_module_nb = {
.notifier_call = trace_kprobe_module_callback,
.priority = 1 /* Invoked after kprobe module callback */
.priority = 2 /* Invoked after kprobe and jump_label module callback */
};
static int trace_kprobe_register_module_notifier(void)
{