From nobody Thu Apr 9 15:10:26 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1B8A4C4321E for ; Mon, 7 Nov 2022 14:16:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232191AbiKGOQx (ORCPT ); Mon, 7 Nov 2022 09:16:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55618 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232010AbiKGOQn (ORCPT ); Mon, 7 Nov 2022 09:16:43 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 187F71CFF6; Mon, 7 Nov 2022 06:16:42 -0800 (PST) From: John Ogness DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1667830601; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=dQqN7WWFfeRk0rEfRkWVolPjdsk8N//2uvtsWSdUdzA=; b=1AfBH1Y1iFfphLxwLDzchu0JtFa4StD8+vHmibnAtoR7r0d9yVZ7XudeFA2hxeTHvPJNO1 ofQxZT3QO7S3AIt5J6jw1rTh+uGC+ykQ2zYmR+fMAtYm0/E/+eRNResYTvMXDWeXtDpBar RhKMrMIijaLU7Ul+Ipvhji9wlW6zaf4LkCuyg9BfVvQ86fLD3DZvTVIe3aP5cl9i7e1Ysy pPuGSq0stzuTH4IF+pPHEL72It1Z2+S8gqw5e/hO3s7QnrkrXM3RZ19pIP8Lh/W5WzcknX 74CdrAlyEh6Swq3T12qX0WpMC7JL0DFBPsUAxGiCsJktqmJZ7DgpuMEBJysaJA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1667830601; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=dQqN7WWFfeRk0rEfRkWVolPjdsk8N//2uvtsWSdUdzA=; b=tjQDm3eXUbLBxw7+a927SUadjeYu0UPY5exQDo0Y3czHli8azPa+URgzRubTdplWFAe0Jt zSX0xI8ffcVGXtCQ== To: Petr Mladek Cc: Sergey Senozhatsky , Steven Rostedt , Thomas Gleixner , linux-kernel@vger.kernel.org, Jason Wessel , Daniel Thompson , Douglas Anderson , Greg Kroah-Hartman , Jiri Slaby , kgdb-bugreport@lists.sourceforge.net, linux-serial@vger.kernel.org Subject: [PATCH printk v3 02/40] serial: kgdboc: Lock console list in probe function Date: Mon, 7 Nov 2022 15:22:00 +0106 Message-Id: <20221107141638.3790965-3-john.ogness@linutronix.de> In-Reply-To: <20221107141638.3790965-1-john.ogness@linutronix.de> References: <20221107141638.3790965-1-john.ogness@linutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Thomas Gleixner Unprotected list walks are not necessarily safe. Signed-off-by: Thomas Gleixner Signed-off-by: John Ogness Reviewed-by: Greg Kroah-Hartman Reviewed-by: Douglas Anderson Reviewed-by: Sergey Senozhatsky Reviewed-by: Petr Mladek Reviewed-by: Daniel Thompson --- drivers/tty/serial/kgdboc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c index 7aa37be3216a..e76f0186c335 100644 --- a/drivers/tty/serial/kgdboc.c +++ b/drivers/tty/serial/kgdboc.c @@ -193,6 +193,7 @@ static int configure_kgdboc(void) if (!p) goto noconfig; =20 + console_lock(); for_each_console(cons) { int idx; if (cons->device && cons->device(cons, &idx) =3D=3D p && @@ -201,6 +202,7 @@ static int configure_kgdboc(void) break; } } + console_unlock(); =20 kgdb_tty_driver =3D p; kgdb_tty_line =3D tty_line; --=20 2.30.2