From nobody Thu Feb 12 23:17:22 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 AB3A3195FD9 for ; Thu, 6 Jun 2024 12:11:01 +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=1717675861; cv=none; b=b7GijvImqRRsC221s/LHHd8VzashDopQ7blopQ4wrS/vUbVVzjLHqUjsF6j49s2Wp4CxargN8wsPEe1cbZIh5NmLZJcdk+ilml03PTHFXEWt/TcQeRAcuP9gxjyUbTcHg18dLLZ765UpoU9cjI+AitDX0UimESGuIABcayA2obw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717675861; c=relaxed/simple; bh=HjlzeB6C1CgYsE+B087pV2CKhW5luo4DRzutqhcqgpk=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=i369FUzWJdJUIFCVzBpPjdTgTr+FKlsXqq68NrTA03xBhLu/GpZfnCU9ARRvMJO89RYGWo8bAAtkaLNHCsSGuocV83iIOkfI7IrPePu72/+mXmgLJBg5Yr3/fwL2AL2TbbiwEGxl/6tX1U9sk9ylR/UcAWzqalMqjzsEL6Tfivg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9486EC4AF5F; Thu, 6 Jun 2024 12:11:01 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.97) (envelope-from ) id 1sFBxS-00000000nNK-0Vu2; Thu, 06 Jun 2024 08:11:06 -0400 Message-ID: <20240606121105.987880939@goodmis.org> User-Agent: quilt/0.68 Date: Thu, 06 Jun 2024 08:10:14 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton Subject: [for-next][PATCH 10/15] ftrace: Assign RCU list variable with rcu_assign_ptr() References: <20240606121004.857581251@goodmis.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: "Steven Rostedt (Google)" Use rcu_assign_ptr() to assign the list pointer as it is marked as RCU, and this quiets the sparse warning: kernel/trace/ftrace.c:313:23: warning: incorrect type in assignment (dif= ferent address spaces) kernel/trace/ftrace.c:313:23: expected struct ftrace_ops [noderef] __= rcu * kernel/trace/ftrace.c:313:23: got struct ftrace_ops * Link: https://lore.kernel.org/linux-trace-kernel/20240605202708.613471310@g= oodmis.org Cc: Mark Rutland Cc: Mathieu Desnoyers Cc: Andrew Morton Acked-by: Masami Hiramatsu (Google) Signed-off-by: Steven Rostedt (Google) --- kernel/trace/ftrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 034242675e7b..4aeb1183ea9f 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -311,7 +311,7 @@ static int remove_ftrace_ops(struct ftrace_ops __rcu **= list, lockdep_is_held(&ftrace_lock)) =3D=3D ops && rcu_dereference_protected(ops->next, lockdep_is_held(&ftrace_lock)) =3D=3D &ftrace_list_end) { - *list =3D &ftrace_list_end; + rcu_assign_pointer(*list, &ftrace_list_end); return 0; } =20 --=20 2.43.0