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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2beb58db336sm5558365ad.68.2026.05.21.23.39.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 21 May 2026 23:39:04 -0700 (PDT) Message-ID: <3be2caa4-dfdb-434d-90d2-63a35518e27d@oss.qualcomm.com> Date: Fri, 22 May 2026 14:37:39 +0800 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 v5 1/5] misc: fastrpc: Fix initial memory allocation for Audio PD memory pool To: Dmitry Baryshkov , srini@kernel.org, amahesh@qti.qualcomm.com, arnd@arndb.de, gregkh@linuxfoundation.org, abelvesa@kernel.org, jorge.ramirez-ortiz@linaro.org References: <20260515124217.20723-1-jianping.li@oss.qualcomm.com> <20260515124217.20723-2-jianping.li@oss.qualcomm.com> Content-Language: en-US From: Jianping Li Cc: Ekansh Gupta , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, quic_chennak@quicinc.com, stable@kernel.org In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: NLeMHfrgDgMQYH7-4dQh7oC1Id_1gzDG X-Authority-Analysis: v=2.4 cv=JrbBas4C c=1 sm=1 tr=0 ts=6a0ffa0a cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=EUspDBNiAAAA:8 a=VwQbUJbxAAAA:8 a=5IayI-uhQhADWBiAsg0A:9 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 X-Proofpoint-GUID: NLeMHfrgDgMQYH7-4dQh7oC1Id_1gzDG X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTIyMDA2NCBTYWx0ZWRfX41JtvdtwHIiu rkBuGBsiuop2sEpXl89ztdAaApeIEZrxw4RpTarraDTq0DjWiLdoTFlkjywy1CqB13y+EeTZE7y AokEeILLmPCj7sLunUaUDhcqfwQFCCTkpYbHY3grKcvVOx+RP+ZkrTxTtp7bOcz2iowzdoJuxim FtaLM6+aJ0RGiPazmW+cMH2S0xkOdjEr71ML8Fa2+h9zSxM3VwxQjQ8VhWcpAG8AiJ4AhVVN9/x DBTJuIRCM4nGqdlIV0kthDvikTSnnTpKNuq5lJYo/HBD5xsNgSSyynR+Ki/IVkxO3dOLSDtgvno yyrKysSOhWPeenz7orolbFDb8xtS23NPHXfQl6YrhAXLwLxy6FuP+cCux2xAylXmBJ5MGoBvDcO HMcMVi4+PZn3WaBocHGRvoyRNCWQssXREVm0msTHvVk0b9L5P7X37li5+mGqtSkRGZfU7VwP39j FNbkVdC17HVQ+V70P0w== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-22_01,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 suspectscore=0 clxscore=1015 adultscore=0 lowpriorityscore=0 spamscore=0 malwarescore=0 phishscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605220064 On 5/15/2026 9:33 PM, Dmitry Baryshkov wrote: > On Fri, May 15, 2026 at 08:42:13PM +0800, Jianping Li wrote: >> From: Ekansh Gupta >> >> The initial buffer allocated for the Audio PD memory pool is never added >> to the pool because pageslen is set to 0. As a result, the buffer is not >> registered with Audio PD and is never used, causing a memory leak. Audio >> PD immediately falls back to allocating memory from the remote heap since >> the pool starts out empty. >> >> Fix this by setting pageslen to 1 so that the initially allocated buffer >> is correctly registered and becomes part of the Audio PD memory pool. >> >> Fixes: 0871561055e66 ("misc: fastrpc: Add support for audiopd") >> Cc: stable@kernel.org >> Co-developed-by: Ekansh Gupta >> Signed-off-by: Ekansh Gupta > If it's From:Ekansh, it can't be CDB: Ekansh. How can Ekansh co-develop > the patch with himself? I will delete CBD:Ekansh. > >> Signed-off-by: Jianping Li >> --- >> drivers/misc/fastrpc.c | 8 ++++---- >> 1 file changed, 4 insertions(+), 4 deletions(-) >> >> diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c >> index 1080f9acf70a..8b21f85cd9f4 100644 >> --- a/drivers/misc/fastrpc.c >> +++ b/drivers/misc/fastrpc.c >> @@ -1324,7 +1324,9 @@ static int fastrpc_init_create_static_process(struct fastrpc_user *fl, >> err = PTR_ERR(name); >> goto err; >> } >> - >> + inbuf.client_id = fl->client_id; >> + inbuf.namelen = init.namelen; >> + inbuf.pageslen = 0; >> if (!fl->cctx->remote_heap) { >> err = fastrpc_remote_heap_alloc(fl, fl->sctx->dev, init.memlen, >> &fl->cctx->remote_heap); >> @@ -1347,12 +1349,10 @@ static int fastrpc_init_create_static_process(struct fastrpc_user *fl, >> goto err_map; >> } >> scm_done = true; >> + inbuf.pageslen = 1; >> } >> } >> >> - inbuf.client_id = fl->client_id; >> - inbuf.namelen = init.namelen; >> - inbuf.pageslen = 0; >> fl->pd = USER_PD; >> >> args[0].ptr = (u64)(uintptr_t)&inbuf; >> -- >> 2.43.0 >>