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Fri, 18 Jul 2025 08:48:56 +0200 (CEST) Message-ID: Date: Fri, 18 Jul 2025 08:48:56 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH V2] ASoC: mediatek: mt8365-dai-i2s: pass correct size to mt8365_dai_set_priv To: Guoqing Jiang , lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, amergnat@baylibre.com Cc: zoran.zhan@mediatek.com, linux-sound@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org References: <20250710011806.134507-1-guoqing.jiang@canonical.com> From: AngeloGioacchino Del Regno Content-Language: en-US In-Reply-To: <20250710011806.134507-1-guoqing.jiang@canonical.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Il 10/07/25 03:18, Guoqing Jiang ha scritto: > 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