From nobody Sat Feb 7 04:01:50 2026 Received: from smtp-relay-canonical-1.canonical.com (smtp-relay-canonical-1.canonical.com [185.125.188.121]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4F76AA95C; Thu, 10 Jul 2025 01:18:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.125.188.121 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752110300; cv=none; b=QWWvpOAkUuBoEvQxeGNnevPW4C4yNn9ds2zueWeg6kHDDm1d/2Fgzz0njQdotHR1RLweyaCii3xLON0UsXonNyQ857vl/pNEwgilnemsYZL9fmkXHCfSAgI36sy8Zi5S3El7K5MJthFnyEJSmI8F76MDYhZkyHgMlJ7X5JXxrWQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752110300; c=relaxed/simple; bh=bhHpyxyAGVbF0NSiWpz6PTn5WY5ZCe9QNc46RU3MHis=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=U2N8n8sq5ow4TLgW7VzTKKPX/86ht6TmRw5MZ2NOgCZYL3XYB9Y57SLy96WaOTwmcgZ1gCuaseLPuNbsaATd8wrtXoelt77f9wA3jRe66ZqQiNy6tKABo2s1P0XuNzwvom7fIGv1qYac8GGvv86JAXgdTskSIKVJUbC27l1S3Nw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=canonical.com; spf=pass smtp.mailfrom=canonical.com; dkim=pass (2048-bit key) header.d=canonical.com header.i=@canonical.com header.b=Ri8SbPqW; arc=none smtp.client-ip=185.125.188.121 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=canonical.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=canonical.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=canonical.com header.i=@canonical.com header.b="Ri8SbPqW" Received: from laptop.lan (unknown [123.123.45.199]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-canonical-1.canonical.com (Postfix) with ESMTPSA id 299183F6D4; Thu, 10 Jul 2025 01:18:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1752110295; bh=wvXX3+98b9csWyA6dkKmj1aJ7aZiKSOMpW9t77vrV88=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=Ri8SbPqWN+8sNA2eSG1ZrBs8nnTbhVJj4L/h1Ei8ODqA7rl5uMPibgt/t2ApkOVZs 1thpTWO7rPzv3GviGAubZHFsrDQv3UHwvBWskn43uyITe/1Yk+e29OI+GFpgmOCEhy +GligoP3K6XD99BV8G6DluC9bgxkivdvTDk2gN5Ev5qrcneCTeJHbmE99C+fYV9AxI AoWGuMfKQbJ+r61jxDMnvtSaqIzPrhH4MCDB5lMrj2adlej0CAX49k4VVITKAGGaBf DhBYgVW2VLSq870ENxViVrSoZ0nI+024t2Za8NtyhrsZ5JJHSCM4CkX/c/aGhL8WKA Wwwet6O9hW1iw== From: Guoqing Jiang To: lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, angelogioacchino.delregno@collabora.com, amergnat@baylibre.com Cc: zoran.zhan@mediatek.com, guoqing.jiang@canonical.com, linux-sound@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH V2] ASoC: mediatek: mt8365-dai-i2s: pass correct size to mt8365_dai_set_priv Date: Thu, 10 Jul 2025 09:18:06 +0800 Message-Id: <20250710011806.134507-1-guoqing.jiang@canonical.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Given mt8365_dai_set_priv allocate priv_size space to copy priv_data which means we should pass mt8365_i2s_priv[i] or "struct mtk_afe_i2s_priv" instead of afe_priv which has the size of "struct mt8365_afe_private". Otherwise the KASAN complains about. [ 59.389765] BUG: KASAN: global-out-of-bounds in mt8365_dai_set_priv+0xc8= /0x168 [snd_soc_mt8365_pcm] ... [ 59.394789] Call trace: [ 59.395167] dump_backtrace+0xa0/0x128 [ 59.395733] show_stack+0x20/0x38 [ 59.396238] dump_stack_lvl+0xe8/0x148 [ 59.396806] print_report+0x37c/0x5e0 [ 59.397358] kasan_report+0xac/0xf8 [ 59.397885] kasan_check_range+0xe8/0x190 [ 59.398485] asan_memcpy+0x3c/0x98 [ 59.399022] mt8365_dai_set_priv+0xc8/0x168 [snd_soc_mt8365_pcm] [ 59.399928] mt8365_dai_i2s_register+0x1e8/0x2b0 [snd_soc_mt8365_pcm] [ 59.400893] mt8365_afe_pcm_dev_probe+0x4d0/0xdf0 [snd_soc_mt8365_pcm] [ 59.401873] platform_probe+0xcc/0x228 [ 59.402442] really_probe+0x340/0x9e8 [ 59.402992] driver_probe_device+0x16c/0x3f8 [ 59.403638] driver_probe_device+0x64/0x1d8 [ 59.404256] driver_attach+0x1dc/0x4c8 [ 59.404840] bus_for_each_dev+0x100/0x190 [ 59.405442] driver_attach+0x44/0x68 [ 59.405980] bus_add_driver+0x23c/0x500 [ 59.406550] driver_register+0xf8/0x3d0 [ 59.407122] platform_driver_register+0x68/0x98 [ 59.407810] mt8365_afe_pcm_driver_init+0x2c/0xff8 [snd_soc_mt8365_pcm] Fixes: 402bbb13a195 ("ASoC: mediatek: mt8365: Add I2S DAI support") Signed-off-by: Guoqing Jiang Reviewed-by: AngeloGioacchino Del Regno --- V2: 1. fix issue reported by lkp, thanks. sound/soc/mediatek/mt8365/mt8365-dai-i2s.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/sound/soc/mediatek/mt8365/mt8365-dai-i2s.c b/sound/soc/mediate= k/mt8365/mt8365-dai-i2s.c index cae51756cead..cb9beb172ed5 100644 --- a/sound/soc/mediatek/mt8365/mt8365-dai-i2s.c +++ b/sound/soc/mediatek/mt8365/mt8365-dai-i2s.c @@ -812,11 +812,10 @@ static const struct snd_soc_dapm_route mtk_dai_i2s_ro= utes[] =3D { static int mt8365_dai_i2s_set_priv(struct mtk_base_afe *afe) { int i, ret; - struct mt8365_afe_private *afe_priv =3D afe->platform_priv; =20 for (i =3D 0; i < DAI_I2S_NUM; i++) { ret =3D mt8365_dai_set_priv(afe, mt8365_i2s_priv[i].id, - sizeof(*afe_priv), + sizeof(mt8365_i2s_priv[i]), &mt8365_i2s_priv[i]); if (ret) return ret; --=20 2.34.1