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=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 8958CC433E0 for ; Tue, 9 Mar 2021 06:44:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3F0146527B for ; Tue, 9 Mar 2021 06:44:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229639AbhCIGny (ORCPT ); Tue, 9 Mar 2021 01:43:54 -0500 Received: from mx2.suse.de ([195.135.220.15]:58474 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229649AbhCIGnf (ORCPT ); Tue, 9 Mar 2021 01:43:35 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 3438AAB8C; Tue, 9 Mar 2021 06:43:34 +0000 (UTC) Date: Tue, 09 Mar 2021 07:43:34 +0100 Message-ID: From: Takashi Iwai To: Pavel Skripkin Cc: perex@perex.cz, tiwai@suse.com, kai.heng.feng@canonical.com, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH next 2/2] sound: usb: fix use after free in usb_audio_disconnect In-Reply-To: <16da19126ff461e5e64a9aec648cce28fb8ed73e.1615242183.git.paskripkin@gmail.com> References: <16da19126ff461e5e64a9aec648cce28fb8ed73e.1615242183.git.paskripkin@gmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 Emacs/25.3 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 08 Mar 2021 23:30:57 +0100, Pavel Skripkin wrote: > > The problem was in wrong "if" placement. chip->quirk_type is freed > in snd_card_free_when_closed(), but inside if statement it's accesed. > > Fixes: 9799110825db ("ALSA: usb-audio: Disable USB autosuspend properly in setup_disable_autosuspend()" > Signed-off-by: Pavel Skripkin Thanks, applied now. Takashi