Hi Steven, kernel test robot noticed the following build errors: [auto build test ERROR on trace/for-next] [also build test ERROR on lwn/docs-next akpm-mm/mm-everything linus/master v6.16 next-20250729] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Steven-Rostedt/tracing-Have-eprobes-have-their-own-config-option/20250730-001958 base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next patch link: https://lore.kernel.org/r/20250729161912.056641407%40kernel.org patch subject: [PATCH v2 1/2] tracing: Have eprobes have their own config option config: xtensa-randconfig-002-20250730 (https://download.01.org/0day-ci/archive/20250730/202507301452.JPAcMvT0-lkp@xxxxxxxxx/config) compiler: xtensa-linux-gcc (GCC) 12.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250730/202507301452.JPAcMvT0-lkp@xxxxxxxxx/reproduce) 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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202507301452.JPAcMvT0-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): kernel/trace/trace_probe.c: In function 'parse_probe_arg': >> kernel/trace/trace_probe.c:1105:23: error: implicit declaration of function 'regs_query_register_offset'; did you mean 'ftrace_regs_query_register_offset'? [-Werror=implicit-function-declaration] 1105 | ret = regs_query_register_offset(arg + 1); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ | ftrace_regs_query_register_offset cc1: some warnings being treated as errors vim +1105 kernel/trace/trace_probe.c a42e3c4de9642d Masami Hiramatsu 2019-06-20 1080 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1081 /* Recursive argument parser */ 533059281ee594 Masami Hiramatsu 2018-04-25 1082 static int 533059281ee594 Masami Hiramatsu 2018-04-25 1083 parse_probe_arg(char *arg, const struct fetch_type *type, 533059281ee594 Masami Hiramatsu 2018-04-25 1084 struct fetch_insn **pcode, struct fetch_insn *end, 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1085) struct traceprobe_parse_context *ctx) 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1086 { 533059281ee594 Masami Hiramatsu 2018-04-25 1087 struct fetch_insn *code = *pcode; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1088 unsigned long param; e65f7ae7f4da56 Masami Hiramatsu 2019-05-15 1089 int deref = FETCH_OP_DEREF; bf173ca92da978 Steven Rostedt (VMware 2018-10-12 1090) long offset = 0; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1091 char *tmp; 34fee3a104cea1 Namhyung Kim 2013-11-26 1092 int ret = 0; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1093 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1094 switch (arg[0]) { 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1095 case '$': d157d7694460b9 Masami Hiramatsu (Google 2023-08-23 1096) ret = parse_probe_vars(arg, type, pcode, end, ctx); 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1097 break; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1098 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1099 case '%': /* named register */ 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1100) if (ctx->flags & (TPARG_FL_TEVENT | TPARG_FL_FPROBE)) { 334e5519c37570 Masami Hiramatsu (Google 2023-06-06 1101) /* eprobe and fprobe do not handle registers */ 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1102) trace_probe_log_err(ctx->offset, BAD_VAR); 2673c60ee67e71 Steven Rostedt (Google 2022-08-20 1103) break; 2673c60ee67e71 Steven Rostedt (Google 2022-08-20 1104) } 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 @1105 ret = regs_query_register_offset(arg + 1); 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1106 if (ret >= 0) { 533059281ee594 Masami Hiramatsu 2018-04-25 1107 code->op = FETCH_OP_REG; 533059281ee594 Masami Hiramatsu 2018-04-25 1108 code->param = (unsigned int)ret; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1109 ret = 0; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1110 } else 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1111) trace_probe_log_err(ctx->offset, BAD_REG_NAME); 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1112 break; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1113 b7e0bf341f6cfa Namhyung Kim 2013-11-25 1114 case '@': /* memory, file-offset or symbol */ 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1115 if (isdigit(arg[1])) { bcd83ea6cbfee5 Daniel Walter 2012-09-26 1116 ret = kstrtoul(arg + 1, 0, ¶m); ab105a4fb89496 Masami Hiramatsu 2019-03-31 1117 if (ret) { 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1118) trace_probe_log_err(ctx->offset, BAD_MEM_ADDR); 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1119 break; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1120 } 533059281ee594 Masami Hiramatsu 2018-04-25 1121 /* load address */ 533059281ee594 Masami Hiramatsu 2018-04-25 1122 code->op = FETCH_OP_IMM; 533059281ee594 Masami Hiramatsu 2018-04-25 1123 code->immediate = param; b7e0bf341f6cfa Namhyung Kim 2013-11-25 1124 } else if (arg[1] == '+') { b7e0bf341f6cfa Namhyung Kim 2013-11-25 1125 /* kprobes don't support file offsets */ 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1126) if (ctx->flags & TPARG_FL_KERNEL) { 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1127) trace_probe_log_err(ctx->offset, FILE_ON_KPROBE); b7e0bf341f6cfa Namhyung Kim 2013-11-25 1128 return -EINVAL; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1129 } b7e0bf341f6cfa Namhyung Kim 2013-11-25 1130 ret = kstrtol(arg + 2, 0, &offset); ab105a4fb89496 Masami Hiramatsu 2019-03-31 1131 if (ret) { 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1132) trace_probe_log_err(ctx->offset, BAD_FILE_OFFS); b7e0bf341f6cfa Namhyung Kim 2013-11-25 1133 break; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1134 } b7e0bf341f6cfa Namhyung Kim 2013-11-25 1135 533059281ee594 Masami Hiramatsu 2018-04-25 1136 code->op = FETCH_OP_FOFFS; 533059281ee594 Masami Hiramatsu 2018-04-25 1137 code->immediate = (unsigned long)offset; // imm64? 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1138 } else { b079d374fd8463 Namhyung Kim 2013-07-03 1139 /* uprobes don't support symbols */ 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1140) if (!(ctx->flags & TPARG_FL_KERNEL)) { 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1141) trace_probe_log_err(ctx->offset, SYM_ON_UPROBE); b079d374fd8463 Namhyung Kim 2013-07-03 1142 return -EINVAL; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1143 } a6682814f37124 Masami Hiramatsu 2018-08-29 1144 /* Preserve symbol for updating */ a6682814f37124 Masami Hiramatsu 2018-08-29 1145 code->op = FETCH_NOP_SYMBOL; a6682814f37124 Masami Hiramatsu 2018-08-29 1146 code->data = kstrdup(arg + 1, GFP_KERNEL); a6682814f37124 Masami Hiramatsu 2018-08-29 1147 if (!code->data) a6682814f37124 Masami Hiramatsu 2018-08-29 1148 return -ENOMEM; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1149 if (++code == end) { 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1150) trace_probe_log_err(ctx->offset, TOO_MANY_OPS); ab105a4fb89496 Masami Hiramatsu 2019-03-31 1151 return -EINVAL; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1152 } 533059281ee594 Masami Hiramatsu 2018-04-25 1153 code->op = FETCH_OP_IMM; a6682814f37124 Masami Hiramatsu 2018-08-29 1154 code->immediate = 0; 533059281ee594 Masami Hiramatsu 2018-04-25 1155 } 533059281ee594 Masami Hiramatsu 2018-04-25 1156 /* These are fetching from memory */ ab105a4fb89496 Masami Hiramatsu 2019-03-31 1157 if (++code == end) { 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1158) trace_probe_log_err(ctx->offset, TOO_MANY_OPS); ab105a4fb89496 Masami Hiramatsu 2019-03-31 1159 return -EINVAL; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1160 } 533059281ee594 Masami Hiramatsu 2018-04-25 1161 *pcode = code; 533059281ee594 Masami Hiramatsu 2018-04-25 1162 code->op = FETCH_OP_DEREF; 533059281ee594 Masami Hiramatsu 2018-04-25 1163 code->offset = offset; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1164 break; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1165 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1166 case '+': /* deref memory */ 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1167 case '-': e65f7ae7f4da56 Masami Hiramatsu 2019-05-15 1168 if (arg[1] == 'u') { e65f7ae7f4da56 Masami Hiramatsu 2019-05-15 1169 deref = FETCH_OP_UDEREF; e65f7ae7f4da56 Masami Hiramatsu 2019-05-15 1170 arg[1] = arg[0]; e65f7ae7f4da56 Masami Hiramatsu 2019-05-15 1171 arg++; e65f7ae7f4da56 Masami Hiramatsu 2019-05-15 1172 } e65f7ae7f4da56 Masami Hiramatsu 2019-05-15 1173 if (arg[0] == '+') e65f7ae7f4da56 Masami Hiramatsu 2019-05-15 1174 arg++; /* Skip '+', because kstrtol() rejects it. */ 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1175 tmp = strchr(arg, '('); ab105a4fb89496 Masami Hiramatsu 2019-03-31 1176 if (!tmp) { 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1177) trace_probe_log_err(ctx->offset, DEREF_NEED_BRACE); 533059281ee594 Masami Hiramatsu 2018-04-25 1178 return -EINVAL; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1179 } 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1180 *tmp = '\0'; bcd83ea6cbfee5 Daniel Walter 2012-09-26 1181 ret = kstrtol(arg, 0, &offset); ab105a4fb89496 Masami Hiramatsu 2019-03-31 1182 if (ret) { 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1183) trace_probe_log_err(ctx->offset, BAD_DEREF_OFFS); 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1184 break; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1185 } 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1186) ctx->offset += (tmp + 1 - arg) + (arg[0] != '-' ? 1 : 0); 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1187 arg = tmp + 1; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1188 tmp = strrchr(arg, ')'); ab105a4fb89496 Masami Hiramatsu 2019-03-31 1189 if (!tmp) { 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1190) trace_probe_log_err(ctx->offset + strlen(arg), ab105a4fb89496 Masami Hiramatsu 2019-03-31 1191 DEREF_OPEN_BRACE); ab105a4fb89496 Masami Hiramatsu 2019-03-31 1192 return -EINVAL; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1193 } else { 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1194) const struct fetch_type *t2 = find_fetch_type(NULL, ctx->flags); 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1195) int cur_offs = ctx->offset; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1196 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1197 *tmp = '\0'; 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1198) ret = parse_probe_arg(arg, t2, &code, end, ctx); 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1199 if (ret) 533059281ee594 Masami Hiramatsu 2018-04-25 1200 break; 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1201) ctx->offset = cur_offs; a42e3c4de9642d Masami Hiramatsu 2019-06-20 1202 if (code->op == FETCH_OP_COMM || a42e3c4de9642d Masami Hiramatsu 2019-06-20 1203 code->op == FETCH_OP_DATA) { 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1204) trace_probe_log_err(ctx->offset, COMM_CANT_DEREF); 533059281ee594 Masami Hiramatsu 2018-04-25 1205 return -EINVAL; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1206 } ab105a4fb89496 Masami Hiramatsu 2019-03-31 1207 if (++code == end) { 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1208) trace_probe_log_err(ctx->offset, TOO_MANY_OPS); ab105a4fb89496 Masami Hiramatsu 2019-03-31 1209 return -EINVAL; ab105a4fb89496 Masami Hiramatsu 2019-03-31 1210 } 533059281ee594 Masami Hiramatsu 2018-04-25 1211 *pcode = code; 533059281ee594 Masami Hiramatsu 2018-04-25 1212 e65f7ae7f4da56 Masami Hiramatsu 2019-05-15 1213 code->op = deref; 533059281ee594 Masami Hiramatsu 2018-04-25 1214 code->offset = offset; c440adfbe30257 Masami Hiramatsu (Google 2023-08-23 1215) /* Reset the last type if used */ c440adfbe30257 Masami Hiramatsu (Google 2023-08-23 1216) ctx->last_type = NULL; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1217 } 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1218 break; 6218bf9f4d2942 Masami Hiramatsu 2019-06-20 1219 case '\\': /* Immediate value */ a42e3c4de9642d Masami Hiramatsu 2019-06-20 1220 if (arg[1] == '"') { /* Immediate string */ 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1221) ret = __parse_imm_string(arg + 2, &tmp, ctx->offset + 2); a42e3c4de9642d Masami Hiramatsu 2019-06-20 1222 if (ret) a42e3c4de9642d Masami Hiramatsu 2019-06-20 1223 break; a42e3c4de9642d Masami Hiramatsu 2019-06-20 1224 code->op = FETCH_OP_DATA; a42e3c4de9642d Masami Hiramatsu 2019-06-20 1225 code->data = tmp; a42e3c4de9642d Masami Hiramatsu 2019-06-20 1226 } else { 6218bf9f4d2942 Masami Hiramatsu 2019-06-20 1227 ret = str_to_immediate(arg + 1, &code->immediate); 6218bf9f4d2942 Masami Hiramatsu 2019-06-20 1228 if (ret) 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1229) trace_probe_log_err(ctx->offset + 1, BAD_IMM); 6218bf9f4d2942 Masami Hiramatsu 2019-06-20 1230 else 6218bf9f4d2942 Masami Hiramatsu 2019-06-20 1231 code->op = FETCH_OP_IMM; a42e3c4de9642d Masami Hiramatsu 2019-06-20 1232 } 6218bf9f4d2942 Masami Hiramatsu 2019-06-20 1233 break; b576e09701c7d0 Masami Hiramatsu (Google 2023-06-06 1234) default: b576e09701c7d0 Masami Hiramatsu (Google 2023-06-06 1235) if (isalpha(arg[0]) || arg[0] == '_') { /* BTF variable */ 25f00e40ce7953 Masami Hiramatsu (Google 2024-03-04 1236) if (!tparg_is_function_entry(ctx->flags) && 25f00e40ce7953 Masami Hiramatsu (Google 2024-03-04 1237) !tparg_is_function_return(ctx->flags)) { b576e09701c7d0 Masami Hiramatsu (Google 2023-06-06 1238) trace_probe_log_err(ctx->offset, NOSUP_BTFARG); b576e09701c7d0 Masami Hiramatsu (Google 2023-06-06 1239) return -EINVAL; b576e09701c7d0 Masami Hiramatsu (Google 2023-06-06 1240) } c440adfbe30257 Masami Hiramatsu (Google 2023-08-23 1241) ret = parse_btf_arg(arg, pcode, end, ctx); b576e09701c7d0 Masami Hiramatsu (Google 2023-06-06 1242) break; b576e09701c7d0 Masami Hiramatsu (Google 2023-06-06 1243) } 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1244 } 533059281ee594 Masami Hiramatsu 2018-04-25 1245 if (!ret && code->op == FETCH_OP_NOP) { 533059281ee594 Masami Hiramatsu 2018-04-25 1246 /* Parsed, but do not find fetch method */ 1b8b0cd754cdbb Masami Hiramatsu (Google 2023-06-06 1247) trace_probe_log_err(ctx->offset, BAD_FETCH_ARG); 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1248 ret = -EINVAL; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1249 } 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1250 return ret; 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1251 } 8ab83f56475ec9 Srikar Dronamraju 2012-04-09 1252 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
