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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B600C433FE for ; Mon, 28 Nov 2022 17:50:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233923AbiK1Rua (ORCPT ); Mon, 28 Nov 2022 12:50:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34098 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233692AbiK1RrG (ORCPT ); Mon, 28 Nov 2022 12:47:06 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C040F2DA81; Mon, 28 Nov 2022 09:41:50 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 612AE612F3; Mon, 28 Nov 2022 17:41:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id ED057C43155; Mon, 28 Nov 2022 17:41:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1669657309; bh=r+M0HEP+Ms20Msc00++GW4FmaUoT610zznhTa2+T19I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=W/JI3km0X6qN8YqRbZPi1TpRjQ1429UaprHmYShK82Wn4sRVd2PS9hMOnUyWahfqj MGd/xZL3q+9j6sUuPfC6edLuNqMwJJ87uirsXEoOILmovagyVbU8aCboanYOfIHDsk p0ROXGCrhEWngSt08OgGKFkV2n4URLGlc+p7gBD5CiT+squHOGXe+JGkmRevkgNZt9 blJImeIFTVB/tPb3dBgYLuLU2yaH3+wVQ9d8yAGFx2/dhFUEION79XQdmtzbDQITcx +aJT8Yzud6zbIjTpU6sEtmk8EZxC7nTSretKgosyPQGni+kiu1nTXy5mWp90cuiDAf 3RAgFosMf0t2w== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Srinivasa Rao Mandadapu , Mark Brown , Sasha Levin , lgirdwood@gmail.com, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org Subject: [PATCH AUTOSEL 5.10 14/19] ASoC: soc-pcm: Add NULL check in BE reparenting Date: Mon, 28 Nov 2022 12:41:14 -0500 Message-Id: <20221128174120.1442235-14-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221128174120.1442235-1-sashal@kernel.org> References: <20221128174120.1442235-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Srinivasa Rao Mandadapu [ Upstream commit db8f91d424fe0ea6db337aca8bc05908bbce1498 ] Add NULL check in dpcm_be_reparent API, to handle kernel NULL pointer dereference error. The issue occurred in fuzzing test. Signed-off-by: Srinivasa Rao Mandadapu Link: https://lore.kernel.org/r/1669098673-29703-1-git-send-email-quic_srivasam@quicinc.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/soc-pcm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 8b8a9aca2912..9a60d62f12fe 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -1159,6 +1159,8 @@ static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe, return; be_substream = snd_soc_dpcm_get_substream(be, stream); + if (!be_substream) + return; for_each_dpcm_fe(be, stream, dpcm) { if (dpcm->fe == fe) -- 2.35.1