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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-24b1f30a63asm1795345ad.66.2025.09.01.21.56.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Sep 2025 21:56:17 -0700 (PDT) From: Amirreza Zarrabi Date: Mon, 01 Sep 2025 21:55:52 -0700 Subject: [PATCH v9 05/11] tee: increase TEE_MAX_ARG_SIZE to 4096 Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250901-qcom-tee-using-tee-ss-without-mem-obj-v9-5-a2af23f132d5@oss.qualcomm.com> References: <20250901-qcom-tee-using-tee-ss-without-mem-obj-v9-0-a2af23f132d5@oss.qualcomm.com> In-Reply-To: <20250901-qcom-tee-using-tee-ss-without-mem-obj-v9-0-a2af23f132d5@oss.qualcomm.com> To: Jens Wiklander , Sumit Garg , Bjorn Andersson , Konrad Dybcio , Bartosz Golaszewski , Apurupa Pattapu , Kees Cook , "Gustavo A. R. Silva" , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= Cc: Harshal Dev , linux-arm-msm@vger.kernel.org, op-tee@lists.trustedfirmware.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-doc@vger.kernel.org, Amirreza Zarrabi , Sumit Garg X-Mailer: b4 0.13.0 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODMwMDAzMSBTYWx0ZWRfX1lNs8SSEU+Qs Zt4WBIOgGmECHjMxEGSjCCiL1EEsOhSG19btKg2mU7cmLoygu2o2RMeb2iFMq7liY+U0suh7Yly SQennTBhpKhr/HGPFGk/to15DkwzUp2bIwxEZAv4RxQvX7LoZhx3RgAZ6HHs7Cfg2hxn+JX0BOa J5/4tnfFnw7TJQ8Zz9tE1QM2ATfwAgECQ53ucXWd7vxxIoTM+q2Op3S8ZCmcO/YPZddj/0zuFGn Kcy3cdV+5R37D56u8FGA8KVOIdBQGqDINIjUtiPb3nTTf7NdcmMP+xF2I4nXTzho42Nk9eS2yMm 5fObcKtT3ipO/98v5B1xpkep6zlR72FdbsIuaqSELpvnHcSENBCbPPOe8OmPDTIWnUJWgTK3d6g G7DLdH8e X-Authority-Analysis: v=2.4 cv=A8xsP7WG c=1 sm=1 tr=0 ts=68b678f4 cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=yJojWOMRYYMA:10 a=EUspDBNiAAAA:8 a=COk6AnOGAAAA:8 a=JCP0Puskdh6qvuzBaLcA:9 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-ORIG-GUID: 3iABerIzv_YZvGv4Ciuc8oOwiacriubs X-Proofpoint-GUID: 3iABerIzv_YZvGv4Ciuc8oOwiacriubs X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-02_01,2025-08-28_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 spamscore=0 impostorscore=0 bulkscore=0 clxscore=1015 suspectscore=0 malwarescore=0 priorityscore=1501 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508300031 Increase TEE_MAX_ARG_SIZE to accommodate worst-case scenarios where additional buffer space is required to pass all arguments to TEE. This change is necessary for upcoming support for Qualcomm TEE, which requires a larger buffer for argument marshaling. Reviewed-by: Sumit Garg Tested-by: Harshal Dev Signed-off-by: Amirreza Zarrabi --- include/uapi/linux/tee.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/uapi/linux/tee.h b/include/uapi/linux/tee.h index ac455683ab5b..5e393080fda1 100644 --- a/include/uapi/linux/tee.h +++ b/include/uapi/linux/tee.h @@ -42,7 +42,7 @@ #define TEE_IOC_MAGIC 0xa4 #define TEE_IOC_BASE 0 -#define TEE_MAX_ARG_SIZE 1024 +#define TEE_MAX_ARG_SIZE 4096 #define TEE_GEN_CAP_GP (1 << 0)/* GlobalPlatform compliant TEE */ #define TEE_GEN_CAP_PRIVILEGED (1 << 1)/* Privileged device (for supplicant) */ -- 2.34.1