tree: https://github.com/jimc/linux.git dd-drm-next head: 599fc12dacf513227ee5c9815a16a3aaa1300f27 commit: 510a0561d60eb462dc8762e0482ec7439731b9bb [14/19] dyndbg: add print-to-tracefs, selftest with it - RFC config: hexagon-randconfig-r041-20211015 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project a49f5386ce6b091da66ea7c3a1d9a588d53becf7) 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 # https://github.com/jimc/linux/commit/510a0561d60eb462dc8762e0482ec7439731... git remote add jimc https://github.com/jimc/linux.git git fetch --no-tags jimc dd-drm-next git checkout 510a0561d60eb462dc8762e0482ec7439731b9bb # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon 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 >>): WARN_ONCE("cannot enable T, CONFIG_TRACE=n\n"); ^ include/asm-generic/bug.h:150:29: note: expanded from macro 'WARN_ONCE' DO_ONCE_LITE_IF(condition, WARN, 1, format) ^ trace_array_printk(trace_arr, _THIS_IP_, "%s%pV", buf, &vaf); ^ lib/dynamic_debug.c:743:3: note: did you mean 'trace_printk'? include/linux/kernel.h:467:5: note: 'trace_printk' declared here int trace_printk(const char *fmt, ...) ^ 2 errors generated. vim +441 lib/dynamic_debug.c 435 436 437 static int ddebug_validate_flags(struct flag_settings *modifiers) 438 { 439 #if !defined(CONFIG_TRACING) 440 if (modifiers->flags & _DPRINTK_FLAGS_TRACE) { 442 return -EINVAL; 443 } 444 #endif 445 return 0; 446 } 447 /* 448 * Parse `str' as a flags specification, format [-+=][p]+. 449 * Sets up *maskp and *flagsp to be used when changing the 450 * flags fields of matched _ddebug's. Returns 0 on success 451 * or <0 on error. 452 */ 453 static int ddebug_parse_flags(const char *str, struct flag_settings *modifiers) 454 { 455 int op, i; 456 457 switch (*str) { 458 case '+': 459 case '-': 460 case '=': 461 op = *str++; 462 break; 463 default: 464 pr_err("bad flag-op %c, at start of %s\n", *str, str); 465 return -EINVAL; 466 } 467 v3pr_info("op=<%c>\n", op); 468 469 for (; *str ; ++str) { 470 for (i = ARRAY_SIZE(opt_array) - 1; i >= 0; i--) { 471 if (*str == opt_array[i].opt_char) { 472 modifiers->flags |= opt_array[i].flag; 473 break; 474 } 475 } 476 if (i < 0) { 477 pr_err("unknown flag '%c'\n", *str); 478 return -EINVAL; 479 } 480 } 481 v3pr_info("flags=0x%x\n", modifiers->flags); 482 483 /* calculate final flags, mask based upon op */ 484 switch (op) { 485 case '=': 486 /* modifiers->flags already set */ 487 modifiers->mask = 0; 488 break; 489 case '+': 490 modifiers->mask = ~0U; 491 break; 492 case '-': 493 modifiers->mask = ~modifiers->flags; 494 modifiers->flags = 0; 495 break; 496 } 497 v3pr_info("*flagsp=0x%x *maskp=0x%x\n", modifiers->flags, modifiers->mask); 498 499 return ddebug_validate_flags(modifiers); 500 } 501 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org