Commit 5ef268cb authored Mar 13, 2026 by Masami Hiramatsu (Google)

kprobes: Remove unneeded warnings from __arm_kprobe_ftrace()

Remove unneeded warnings for handled errors from __arm_kprobe_ftrace()
because all caller handled the error correctly.

Link: https://lore.kernel.org/all/177261531182.1312989.8737778408503961141.stgit@mhiramat.tok.corp.google.com/

Reported-by: Zw Tang <shicenci@gmail.com>
Closes: https://lore.kernel.org/all/CAPHJ_V+J6YDb_wX2nhXU6kh466Dt_nyDSas-1i_Y8s7tqY-Mzw@mail.gmail.com/

Fixes: 9c89bb8e ("kprobes: treewide: Cleanup the error messages for kprobes")
Cc: stable@vger.kernel.org
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>

parent e113f0b4

kernel/kprobes.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -1144,12 +1144,12 @@ static int __arm_kprobe_ftrace(struct kprobe p, struct ftrace_ops ops,
		lockdep_assert_held(&kprobe_mutex);

		ret = ftrace_set_filter_ip(ops, (unsigned long)p->addr, 0, 0);
		if (WARN_ONCE(ret < 0, "Failed to arm kprobe-ftrace at %pS (error %d)\n", p->addr, ret))
		if (ret < 0)
		return ret;

		if (*cnt == 0) {
		ret = register_ftrace_function(ops);
		if (WARN(ret < 0, "Failed to register kprobe-ftrace (error %d)\n", ret)) {
		if (ret < 0) {
		/*
		* At this point, sinec ops is not registered, we should be sefe from
		* registering empty filter.