From patchwork Tue Oct 3 15:55:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 728834 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1FC90E7AD74 for ; Tue, 3 Oct 2023 16:04:16 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 6CCC7E8B; Tue, 3 Oct 2023 18:03:24 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 6CCC7E8B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1696349054; bh=2DhAHBo+YbBdItb8HnA01InHv+0f3MquKuWsrN91pvQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=ryFE/NM8UQDtjo/1kpbr8FBPCQ46TzXlKBlkzy/cZgdM09BQBQWuojvCFmt9oJNhl l5shCc6QqgAzOY+b5x0vgMizi/dEcpfBZ3VJE7y1viSMM+oEp9waewkpqxVzUnY5Rm 5gyDh6iMHPfB2DnjeaWiis+q4pfa6tkN+jipsv28= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 0A74AF80587; Tue, 3 Oct 2023 18:02:38 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id B4672F8058C; Tue, 3 Oct 2023 18:02:37 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 2823CF80557; Tue, 3 Oct 2023 17:59:30 +0200 (CEST) Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id C682FF80553 for ; Tue, 3 Oct 2023 17:58:33 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz C682FF80553 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=q0yACS9I Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 040F161298; Tue, 3 Oct 2023 15:58:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E4AAEC433CB; Tue, 3 Oct 2023 15:58:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1696348710; bh=2DhAHBo+YbBdItb8HnA01InHv+0f3MquKuWsrN91pvQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=q0yACS9I5mo04/f0p1lkuf9QE0h/FBp1VdvpIubCClTCduooBHTGsehbanfK6yFvr 3d8ujJR0Gt/HlsJsczhxWFnef/uOGAfKSriVeQMl5hfqfrk6NOaLe+O5EaPctUWU1z +QSkqUWkWnPx+BvrCmKjWSkvqhDzubLJzNnqEFTPwpFpZg3UX6XdnBtW4No9ZVrsBG zMZKn/1N8amwOwczJjtASlirvoX3vZQl4towl66BWWGHiQUHRFrKy3C3auyGuRlF79 mrk4YBN1ph1ItMh67p8ApqzWEsINR+BzKnV6LA8a9IpbAnCrnYR6A1Je6+1/Su5Ws5 RKSGUTLwkQGzQ== Received: from johan by xi.lan with local (Exim 4.96) (envelope-from ) id 1qnhnG-00074z-13; Tue, 03 Oct 2023 17:58:42 +0200 From: Johan Hovold To: Mark Brown Cc: Liam Girdwood , Jaroslav Kysela , Takashi Iwai , Srinivas Kandagatla , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Johan Hovold , stable@vger.kernel.org Subject: [PATCH 6/7] ASoC: codecs: wcd938x-sdw: fix use after free on driver unbind Date: Tue, 3 Oct 2023 17:55:57 +0200 Message-ID: <20231003155558.27079-7-johan+linaro@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231003155558.27079-1-johan+linaro@kernel.org> References: <20231003155558.27079-1-johan+linaro@kernel.org> MIME-Version: 1.0 Message-ID-Hash: YR2ZMFJEMCGTMPXEQSY45UTAT3VAMQKC X-Message-ID-Hash: YR2ZMFJEMCGTMPXEQSY45UTAT3VAMQKC X-MailFrom: johan+linaro@kernel.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1 X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Make sure to deregister the component when the driver is being unbound and before the underlying device-managed resources are freed. Fixes: 16572522aece ("ASoC: codecs: wcd938x-sdw: add SoundWire driver") Cc: stable@vger.kernel.org # 5.14 Cc: Srinivas Kandagatla Signed-off-by: Johan Hovold --- sound/soc/codecs/wcd938x-sdw.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/sound/soc/codecs/wcd938x-sdw.c b/sound/soc/codecs/wcd938x-sdw.c index 6951120057e5..1baea04480e2 100644 --- a/sound/soc/codecs/wcd938x-sdw.c +++ b/sound/soc/codecs/wcd938x-sdw.c @@ -1281,6 +1281,15 @@ static int wcd9380_probe(struct sdw_slave *pdev, return component_add(dev, &wcd938x_sdw_component_ops); } +static int wcd9380_remove(struct sdw_slave *pdev) +{ + struct device *dev = &pdev->dev; + + component_del(dev, &wcd938x_sdw_component_ops); + + return 0; +} + static const struct sdw_device_id wcd9380_slave_id[] = { SDW_SLAVE_ENTRY(0x0217, 0x10d, 0), {}, @@ -1320,6 +1329,7 @@ static const struct dev_pm_ops wcd938x_sdw_pm_ops = { static struct sdw_driver wcd9380_codec_driver = { .probe = wcd9380_probe, + .remove = wcd9380_remove, .ops = &wcd9380_slave_ops, .id_table = wcd9380_slave_id, .driver = {