tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.15 head: b4852fbf90916fdc2f1e0e282e100f7e0e889d77 commit: aabdf8c83677b5a7a86f9501b98ba5c7fa290648 [976/2818] CHROMIUM: alt-syscall: Make required syscalls available for use config: arm-chromiumos-arm-customedconfig-chrome-os:chromeos-5.15:b4852fbf90916fdc2f1e0e282e100f7e0e889d77 (https://download.01.org/0day-ci/archive/20211212/202112120809.hAd2Uwqx-lk...) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.15 git checkout aabdf8c83677b5a7a86f9501b98ba5c7fa290648 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 203 | int ksys_setpriority(int which, int who, int niceval) | ^~~~~~~~~~~~~~~~ 278 | int ksys_getpriority(int which, int who) | ^~~~~~~~~~~~~~~~ 2274 | int ksys_prctl(int option, unsigned long arg2, unsigned long arg3, | ^~~~~~~~~~ 2556 | int ksys_getcpu(unsigned __user *cpup, unsigned __user *nodep, | ^~~~~~~~~~~ cc1: all warnings being treated as errors -- 354 | int ksys_adjtimex_time32(struct old_timex32 __user * utp) | ^~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- 1112 | int ksys_clock_adjtime(const clockid_t which_clock, | ^~~~~~~~~~~~~~~~~~ 1188 | int ksys_clock_adjtime32(clockid_t which_clock, struct old_timex32 __user * utp) | ^~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- 11987 | int ksys_perf_event_open(struct perf_event_attr __user * attr_uptr, pid_t pid, | ^~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/ksys_setpriority +203 kernel/sys.c 202 204 { 205 struct task_struct *g, *p; 206 struct user_struct *user; 207 const struct cred *cred = current_cred(); 208 int error = -EINVAL; 209 struct pid *pgrp; 210 kuid_t uid; 211 212 if (which > PRIO_USER || which < PRIO_PROCESS) 213 goto out; 214 215 /* normalize: avoid signed division (rounding problems) */ 216 error = -ESRCH; 217 if (niceval < MIN_NICE) 218 niceval = MIN_NICE; 219 if (niceval > MAX_NICE) 220 niceval = MAX_NICE; 221 222 rcu_read_lock(); 223 read_lock(&tasklist_lock); 224 switch (which) { 225 case PRIO_PROCESS: 226 if (who) 227 p = find_task_by_vpid(who); 228 else 229 p = current; 230 if (p) 231 error = set_one_prio(p, niceval, error); 232 break; 233 case PRIO_PGRP: 234 if (who) 235 pgrp = find_vpid(who); 236 else 237 pgrp = task_pgrp(current); 238 do_each_pid_thread(pgrp, PIDTYPE_PGID, p) { 239 error = set_one_prio(p, niceval, error); 240 } while_each_pid_thread(pgrp, PIDTYPE_PGID, p); 241 break; 242 case PRIO_USER: 243 uid = make_kuid(cred->user_ns, who); 244 user = cred->user; 245 if (!who) 246 uid = cred->uid; 247 else if (!uid_eq(uid, cred->uid)) { 248 user = find_user(uid); 249 if (!user) 250 goto out_unlock; /* No processes for this user */ 251 } 252 do_each_thread(g, p) { 253 if (uid_eq(task_uid(p), uid) && task_pid_vnr(p)) 254 error = set_one_prio(p, niceval, error); 255 } while_each_thread(g, p); 256 if (!uid_eq(uid, cred->uid)) 257 free_uid(user); /* For find_user() */ 258 break; 259 } 260 out_unlock: 261 read_unlock(&tasklist_lock); 262 rcu_read_unlock(); 263 out: 264 return error; 265 } 266 267 SYSCALL_DEFINE3(setpriority, int, which, int, who, int, niceval) 268 { 269 return ksys_setpriority(which, who, niceval); 270 } 271 272 /* 273 * Ugh. To avoid negative return values, "getpriority()" will 274 * not return the normal nice-value, but a negated value that 275 * has been offset by 20 (ie it returns 40..1 instead of -20..19) 276 * to stay compatible. 277 */ 279 { 280 struct task_struct *g, *p; 281 struct user_struct *user; 282 const struct cred *cred = current_cred(); 283 long niceval, retval = -ESRCH; 284 struct pid *pgrp; 285 kuid_t uid; 286 287 if (which > PRIO_USER || which < PRIO_PROCESS) 288 return -EINVAL; 289 290 rcu_read_lock(); 291 read_lock(&tasklist_lock); 292 switch (which) { 293 case PRIO_PROCESS: 294 if (who) 295 p = find_task_by_vpid(who); 296 else 297 p = current; 298 if (p) { 299 niceval = nice_to_rlimit(task_nice(p)); 300 if (niceval > retval) 301 retval = niceval; 302 } 303 break; 304 case PRIO_PGRP: 305 if (who) 306 pgrp = find_vpid(who); 307 else 308 pgrp = task_pgrp(current); 309 do_each_pid_thread(pgrp, PIDTYPE_PGID, p) { 310 niceval = nice_to_rlimit(task_nice(p)); 311 if (niceval > retval) 312 retval = niceval; 313 } while_each_pid_thread(pgrp, PIDTYPE_PGID, p); 314 break; 315 case PRIO_USER: 316 uid = make_kuid(cred->user_ns, who); 317 user = cred->user; 318 if (!who) 319 uid = cred->uid; 320 else if (!uid_eq(uid, cred->uid)) { 321 user = find_user(uid); 322 if (!user) 323 goto out_unlock; /* No processes for this user */ 324 } 325 do_each_thread(g, p) { 326 if (uid_eq(task_uid(p), uid) && task_pid_vnr(p)) { 327 niceval = nice_to_rlimit(task_nice(p)); 328 if (niceval > retval) 329 retval = niceval; 330 } 331 } while_each_thread(g, p); 332 if (!uid_eq(uid, cred->uid)) 333 free_uid(user); /* for find_user() */ 334 break; 335 } 336 out_unlock: 337 read_unlock(&tasklist_lock); 338 rcu_read_unlock(); 339 340 return retval; 341 } 342 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org