From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB52EC433E0 for ; Mon, 8 Jun 2020 10:06:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8716B206D5 for ; Mon, 8 Jun 2020 10:06:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=rere.qmqm.pl header.i=@rere.qmqm.pl header.b="YtIFvNqv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729301AbgFHKGf (ORCPT ); Mon, 8 Jun 2020 06:06:35 -0400 Received: from rere.qmqm.pl ([91.227.64.183]:9182 "EHLO rere.qmqm.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729240AbgFHKGe (ORCPT ); Mon, 8 Jun 2020 06:06:34 -0400 Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 49gTRr0G62z2d; Mon, 8 Jun 2020 12:06:31 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1591610792; bh=Xrng9HgE5HPvIAp1NSK4MnUJUDNRKMXBFpteoCe0zYw=; h=Date:From:Subject:To:Cc:From; b=YtIFvNqvAgjAXTyf+AhtXaVrR7FsPn42OVG+x8gNrWDykD5AAnSh8U17Toy7c27Mm sWWzHnXRiNKpBHvJ2eyDgTSLtJlLCzVElljrXW1XiJUnPI5yClZZb9vIPdE8BsNiL+ /dH1BS1D/f5490Z50t3q5TCFZzX9tfzKar4ffgRMPmVmZTAymFEYsL6Q/4g0JuOjYZ DxTlYgihFZFrsgV7twUoUmOzUVF3bC5tJSx6naxrgInPZ2d58z5201NBD/IVHHjSww fXbA4gSyu6lF9ooRp9zvdXbRv4bioQ9X/NcDtBuJRL58M09jR2EUh9q/ix11tIBf/X eBOMxOOiM3/1w== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.2 at mail Date: Mon, 08 Jun 2020 12:06:30 +0200 Message-Id: From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Subject: [PATCH 0/2] ALSA: pcm: stream linking locking fixes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit To: Jaroslav Kysela , Takashi Iwai Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Two patches fixing locking issues for SNDRV_PCM_IOCTL_LINK handling: first adds a check preventing linking a stream to itself, second quiets lockdep warning about nested locks. Michał Mirosław (2): ALSA: pcm: disallow linking stream to itself ALSA: pcm: fix snd_pcm_link() lockdep splat sound/core/pcm_native.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) -- 2.20.1