tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: a53913bacac4876eee9ce118b3101dff842318ef commit: 3ad98583441f7c8a2553e1e8d6340ed4397033e2 [2229/2229] crypto: tdm: Support dynamic protection for SCT and IDT by HYGON TDM config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20250515/202505150403.myIeqBlp-lkp@i...) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) rustc: rustc 1.73.0 (cc66ad468 2023-10-03) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250515/202505150403.myIeqBlp-lkp@i...) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202505150403.myIeqBlp-lkp@intel.com/ All warnings (new ones prefixed by >>):

...

drivers/crypto/ccp/hygon/tdm-kernel-guard.c:151:5: warning: no previous prototype for function 'tdm_service_run' [-Wmissing-prototypes] 151 | int tdm_service_run(struct tdm_security_enhance *data) | ^ drivers/crypto/ccp/hygon/tdm-kernel-guard.c:151:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 151 | int tdm_service_run(struct tdm_security_enhance *data) | ^ | static drivers/crypto/ccp/hygon/tdm-kernel-guard.c:212:5: warning: no previous prototype for function 'tdm_service_exit' [-Wmissing-prototypes] 212 | int tdm_service_exit(struct tdm_security_enhance *data) | ^ drivers/crypto/ccp/hygon/tdm-kernel-guard.c:212:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 212 | int tdm_service_exit(struct tdm_security_enhance *data) | ^ | static drivers/crypto/ccp/hygon/tdm-kernel-guard.c:243:15: warning: no previous prototype for function 'kprobe_symbol_address_byname' [-Wmissing-prototypes] 243 | unsigned long kprobe_symbol_address_byname(const char *name) | ^ drivers/crypto/ccp/hygon/tdm-kernel-guard.c:243:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 243 | unsigned long kprobe_symbol_address_byname(const char *name) | ^ | static 3 warnings generated.

vim +/tdm_service_run +151 drivers/crypto/ccp/hygon/tdm-kernel-guard.c 150

151 int tdm_service_run(struct tdm_security_enhance *data) 152 { 153 int ret = 0; 154 struct addr_range_info *addr_range = NULL; 155 156 // Allocate memory for addr_range 157 addr_range = kzalloc(sizeof(struct addr_range_info) + sizeof(struct addr_info), GFP_KERNEL); 158 if (!addr_range) { 159 ret = -DYN_ERR_MEM; 160 pr_err("addr_range kzalloc memory failed\n"); 161 goto end; 162 } 163 164 // Fill in addr_range 165 addr_range->count = 1; 166 addr_range->addr[0].addr_start = data->vaddr; 167 addr_range->addr[0].length = data->size; 168 data->mem_range = addr_range; 169 170 // Context configuration 171 data->context |= TASK_CREATE_VADDR; 172 173 // Allocate memory for authcode 174 data->authcode = kzalloc(sizeof(struct authcode_2b) + AUTHCODE_MAX, GFP_KERNEL); 175 if (!data->authcode) { 176 ret = -DYN_ERR_MEM; 177 pr_err("authcode_2b kzalloc memory failed\n"); 178 goto free_addr_range_info; 179 } 180 181 data->authcode->len = AUTHCODE_MAX; 182 183 // Measurement data configuration 184 data->mdata.hash_algo = HASH_ALGO_SM3; 185 data->mdata.period_ms = 0; 186 ret = calc_expected_hash((uint8_t *)data->vaddr, data->size, 187 data->mdata.expected_measurement); 188 if (ret) { 189 pr_err("calculate expected hash failed!\n"); 190 goto free_authcode; 191 } 192 193 // Create and start tdm task 194 ret = tdm_task_create_and_run(data); 195 if (ret) { 196 pr_err("tdm_task_create_and_run failed!\n"); 197 goto free_authcode; 198 } 199 200 return ret; 201 202 free_authcode: 203 kfree(data->authcode); 204 data->authcode = NULL; 205 free_addr_range_info: 206 kfree(data->mem_range); 207 data->mem_range = NULL; 208 end: 209 return ret; 210 } 211 212 int tdm_service_exit(struct tdm_security_enhance *data) 213 { 214 int ret = 0; 215 int task_status = 0; 216 217 task_status = psp_startstop_measure_task(data->task_id, data->authcode, false); 218 if (task_status < 0) { 219 ret = task_status; 220 pr_err("task_id %d stop failed with 0x%x\n", data->task_id, ret); 221 goto end; 222 } 223 224 // Waiting for the task to end 225 msleep(40); 226 227 psp_destroy_measure_task(data->task_id, data->authcode); 228 229 kfree(data->authcode); 230 data->authcode = NULL; 231 kfree(data->mem_range); 232 data->mem_range = NULL; 233 end: 234 return ret; 235 } 236 237 #if !IS_BUILTIN(CONFIG_TDM_KERNEL_GUARD) 238 static int p_tmp_kprobe_handler(struct kprobe *p_ri, struct pt_regs *p_regs) 239 { 240 return 0; 241 } 242 243 unsigned long kprobe_symbol_address_byname(const char *name) 244 { 245 int p_ret; 246 struct kprobe p_kprobe; 247 unsigned long addr = 0; 248 249 memset(&p_kprobe, 0, sizeof(p_kprobe)); 250 251 p_kprobe.pre_handler = p_tmp_kprobe_handler; 252 p_kprobe.symbol_name = name; 253 254 p_ret = register_kprobe(&p_kprobe); 255 if (p_ret < 0) { 256 pr_err("register_kprobe error [%d] :(\n", p_ret); 257 return 0; 258 } 259 260 addr = (unsigned long)p_kprobe.addr; 261 unregister_kprobe(&p_kprobe); 262 263 return addr; 264 } 265 #endif 266

-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki