From nobody Mon Apr 13 21:02:53 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9FD0A38E13F; Wed, 4 Mar 2026 09:08:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772615317; cv=none; b=ClZEg3gcZ4SoTr2+V7e4PbuF5B2rCWsz2l7XvWKb1dVCDKAULlndWRq88nnVFBrUWjEoDBv551PlUQolRSJXGhqETOY5SdS5f6fal0tmvyQgORvw2ZdROocvB5eBLAchP/xMxJozz3HYM/PK66taEurKCPBzDmDXrA963yl4Ie4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772615317; c=relaxed/simple; bh=V/Qojnuj+I9U45r4POyL6r8L8dOX5Juzne+U50WlNzc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=hpZlbBmo3GPu0F3ZMS4+EQFlmN4eVdc459eCXkNgsAP6qfEsDX2Exmi6JGE3uB2y8hW9PulXqpx0ycpT9eGUpiSLzHiPTxKC19nS4IKeAzcG+xlJSKM+6xYB9/m/G1uM9mv36LhtPjNdvrHRKbpMLJMWIURRg03rRlsdqbwfhj0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jBMcoeVU; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="jBMcoeVU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0E5E0C19423; Wed, 4 Mar 2026 09:08:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772615317; bh=V/Qojnuj+I9U45r4POyL6r8L8dOX5Juzne+U50WlNzc=; h=From:To:Cc:Subject:Date:From; b=jBMcoeVU+vWY4QpZHjyp/qBZE8TAocJUWiFCUwTqebiQq+kiWI4kUOvob1NztODd2 QlKk+d/rls6KBvS6C6W4ddANTroatNb1foVl8SjHNWJwU7yZQRmCw3wl/c38H+hYLx 74iHkG5dkrXW4Yo/npVo1jPnGu8226wP1qGtnT/gJLArtMX9TZWBek6gNly+BaulwV qBovdmuqUd7YcAxwLyT+TF/AvJ1td8CN8Vnuc3hjZDkOJgktzw/ZdmG9D3RHBggppX 7VicvcdwH2RYhEKGWpUaF92W2xfFGfzWSr3sBKZVCXx+1QBm2MMdqUWjOSzeUcH5et Nq1kf2AbIOatg== From: "Masami Hiramatsu (Google)" To: Naveen N Rao , Masami Hiramatsu , Steven Rostedt Cc: Zw Tang , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Sasha Levin , "David S . Miller" Subject: [PATCH] kprobes: Remove unneeded warnings from __arm_kprobe_ftrace() Date: Wed, 4 Mar 2026 18:08:32 +0900 Message-ID: <177261531182.1312989.8737778408503961141.stgit@mhiramat.tok.corp.google.com> X-Mailer: git-send-email 2.53.0.473.g4a7958ca14-goog User-Agent: StGit/0.19 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Masami Hiramatsu (Google) Remove unneeded warnings for handled errors from __arm_kprobe_ftrace() because all caller handled the error correctly. Reported-by: Zw Tang Closes: https://lore.kernel.org/all/CAPHJ_V+J6YDb_wX2nhXU6kh466Dt_nyDSas-1i= _Y8s7tqY-Mzw@mail.gmail.com/ Fixes: 9c89bb8e3272 ("kprobes: treewide: Cleanup the error messages for kpr= obes") Cc: stable@vger.kernel.org Signed-off-by: Masami Hiramatsu (Google) --- kernel/kprobes.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/kprobes.c b/kernel/kprobes.c index ab25b4aa9095..2c2b7bd24dd4 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -1144,12 +1144,12 @@ static int __arm_kprobe_ftrace(struct kprobe *p, st= ruct ftrace_ops *ops, lockdep_assert_held(&kprobe_mutex); =20 ret =3D 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; =20 if (*cnt =3D=3D 0) { ret =3D 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.