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 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 64501C4332F for ; Mon, 28 Nov 2022 17:43:06 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id A056E1710; Mon, 28 Nov 2022 18:42:14 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz A056E1710 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1669657384; bh=r+M0HEP+Ms20Msc00++GW4FmaUoT610zznhTa2+T19I=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=RAwOSijVjQfL6KPrwVAEVmDFSRSGZUz9uGWLY38UaB+weE4g28K5SQopszjtmEi6C +zv1dYBOX4C3c++1QR+kJiV4B3YOIyVtwVm0RQn0rW/KA8W0KujZQd9VMiHp8Hz/Z4 Jsi84/KluZPTKHfp7PeIysUqqmX0fdfeDo7kAkKg= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 478A9F804AC; Mon, 28 Nov 2022 18:41:55 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 096FAF80579; Mon, 28 Nov 2022 18:41:54 +0100 (CET) Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 673ECF8056F for ; Mon, 28 Nov 2022 18:41:51 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 673ECF8056F Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="W/JI3km0" 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 03949612FB; 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 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 Cc: Sasha Levin , alsa-devel@alsa-project.org, lgirdwood@gmail.com, tiwai@suse.com, Mark Brown , Srinivasa Rao Mandadapu X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" 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