Hi Steven, kernel test robot noticed the following build errors:
[auto build test ERROR on trace/for-next] [also build test ERROR on linus/master v7.1-rc4 next-20260519] [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-eprobes-Allow-use-of-BTF-names-to-dereference-pointers/20260520-011353 base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next patch link: https://lore.kernel.org/r/20260519130144.40e71a00%40fedora patch subject: [PATCH v5] tracing/eprobes: Allow use of BTF names to dereference pointers config: s390-randconfig-r071-20260520 (https://download.01.org/0day-ci/archive/20260520/[email protected]/config) compiler: s390-linux-gcc (GCC) 8.5.0 smatch: v0.5.0-9185-gbcc58b9c reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260520/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All error/warnings (new ones prefixed by >>): kernel/trace/trace_probe.c: In function 'parse_probe_vars': >> kernel/trace/trace_probe.c:1035:7: error: implicit declaration of function >> 'parse_trace_event'; did you mean 'parse_trace_event_arg'? >> [-Werror=implicit-function-declaration] if (parse_trace_event(arg, code, ctx) < 0) ^~~~~~~~~~~~~~~~~ parse_trace_event_arg kernel/trace/trace_probe.c: In function 'sprint_nth_btf_arg': >> kernel/trace/trace_probe.c:1803:20: error: implicit declaration of function >> 'ctx_btf' [-Werror=implicit-function-declaration] struct btf *btf = ctx_btf(ctx); ^~~~~~~ >> kernel/trace/trace_probe.c:1803:20: warning: initialization of 'struct btf >> *' from 'int' makes pointer from integer without a cast [-Wint-conversion] At top level: >> kernel/trace/trace_probe.c:318:12: warning: 'parse_trace_event_arg' defined >> but not used [-Wunused-function] static int parse_trace_event_arg(char *arg, struct fetch_insn *code, ^~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +1035 kernel/trace/trace_probe.c 1020 1021 /* Parse $vars. @orig_arg points '$', which syncs to @ctx->offset */ 1022 static int parse_probe_vars(char *orig_arg, const struct fetch_type *t, 1023 struct fetch_insn **pcode, 1024 struct fetch_insn *end, 1025 struct traceprobe_parse_context *ctx) 1026 { 1027 struct fetch_insn *code = *pcode; 1028 int err = TP_ERR_BAD_VAR; 1029 char *arg = orig_arg + 1; 1030 unsigned long param; 1031 int ret = 0; 1032 int len; 1033 1034 if (ctx->flags & TPARG_FL_TEVENT) { > 1035 if (parse_trace_event(arg, code, ctx) < 0) 1036 goto inval; 1037 return 0; 1038 } 1039 1040 if (str_has_prefix(arg, "retval")) { 1041 if (!(ctx->flags & TPARG_FL_RETURN)) { 1042 err = TP_ERR_RETVAL_ON_PROBE; 1043 goto inval; 1044 } 1045 if (!(ctx->flags & TPARG_FL_KERNEL) || 1046 !IS_ENABLED(CONFIG_PROBE_EVENTS_BTF_ARGS)) { 1047 code->op = FETCH_OP_RETVAL; 1048 return 0; 1049 } 1050 return parse_btf_arg(orig_arg, pcode, end, ctx); 1051 } 1052 1053 len = str_has_prefix(arg, "stack"); 1054 if (len) { 1055 1056 if (arg[len] == '\0') { 1057 code->op = FETCH_OP_STACKP; 1058 return 0; 1059 } 1060 1061 if (isdigit(arg[len])) { 1062 ret = kstrtoul(arg + len, 10, ¶m); 1063 if (ret) 1064 goto inval; 1065 1066 if ((ctx->flags & TPARG_FL_KERNEL) && 1067 param > PARAM_MAX_STACK) { 1068 err = TP_ERR_BAD_STACK_NUM; 1069 goto inval; 1070 } 1071 code->op = FETCH_OP_STACK; 1072 code->param = (unsigned int)param; 1073 return 0; 1074 } 1075 goto inval; 1076 } 1077 1078 if (strcmp(arg, "comm") == 0 || strcmp(arg, "COMM") == 0) { 1079 code->op = FETCH_OP_COMM; 1080 return 0; 1081 } 1082 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
