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 8899FC433FE for ; Mon, 28 Nov 2022 17:45:21 +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 B6313174E; Mon, 28 Nov 2022 18:44:29 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz B6313174E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1669657519; bh=mYDS8NhRtn6iHirANvokxO19PldCMN2N89AlLM3kj5s=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=td6OUTMVyrr/3ouW9TVtYagYgwgZJ+/A6Pc15hocnj4Ab9gg31ThxFVAjzJBL0VzX ZhqOpdPzcoGR9VcRKmg5g7CTTwshadwcOSn8gIsFGjuu4BHIaK60T1vrA+2e/owZq6 KPPQuiBhqZK5bt9a+QwKD7C2e2WgjHnTyORXy838= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id CDA7EF80567; Mon, 28 Nov 2022 18:43:43 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id B4573F8057A; Mon, 28 Nov 2022 18:43:42 +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 9B27EF8057A for ; Mon, 28 Nov 2022 18:43:36 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 9B27EF8057A Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="C/2HPI6u" 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 333896130B; Mon, 28 Nov 2022 17:43:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7C5B6C43141; Mon, 28 Nov 2022 17:43:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1669657414; bh=mYDS8NhRtn6iHirANvokxO19PldCMN2N89AlLM3kj5s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=C/2HPI6udJk+NmsRVsQLYP6owdJQ9/ItPQy6+KzwrtgtSdHqcngBzr0zkSTmgUmk5 DBikLAcJq3kWNn2jerVywa+vBkwqPGiUxtUTnBoA5iNklnrd0veEa36q2wSwP+cDst mKFXhWySDeU9ekx27CgKZvrrJEtgkEhwOMl62JjrFHFz3HwpVvaA8YGB/lk2rCd0nX g2gV9KDrk2Z8z3aZS260aoDpLUsLn8EXWq2lsJ2glDNTVIc0peSzilkOsCzIACBKb3 2KgTNGvF25ZU4lR6cDz2UwlbjK9zzIRUZIFFnTQdOSDhWyeKifnHRYuNeHDl3jjE+Z subU+myQCxb/w== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 5/5] ASoC: soc-pcm: Add NULL check in BE reparenting Date: Mon, 28 Nov 2022 12:43:23 -0500 Message-Id: <20221128174324.1443132-5-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221128174324.1443132-1-sashal@kernel.org> References: <20221128174324.1443132-1-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 6c31a909845c..f6cebe2b3cbb 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -1182,6 +1182,8 @@ 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; list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { if (dpcm->fe == fe) -- 2.35.1