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 v6.17-rc7 next-20250923] [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-Replace-syscall-RCU-pointer-assignment-with-READ-WRITE_ONCE/20250923-210948 base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next patch link: https://lore.kernel.org/r/20250923130714.603760198%40kernel.org patch subject: [PATCH v2 7/8] tracing: Add syscall_user_buf_size to limit amount written config: x86_64-kexec (https://download.01.org/0day-ci/archive/20250924/[email protected]/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250924/[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 errors (new ones prefixed by >>): >> kernel/trace/trace.c:11128:32: error: use of undeclared identifier >> 'CONFIG_TRACE_SYSCALL_BUF_SIZE_DEFAULT' 11128 | global_trace.syscall_buf_sz = CONFIG_TRACE_SYSCALL_BUF_SIZE_DEFAULT; | ^ 1 error generated. vim +/CONFIG_TRACE_SYSCALL_BUF_SIZE_DEFAULT +11128 kernel/trace/trace.c 11110 11111 init_trace_flags_index(&global_trace); 11112 11113 register_tracer(&nop_trace); 11114 11115 /* Function tracing may start here (via kernel command line) */ 11116 init_function_trace(); 11117 11118 /* All seems OK, enable tracing */ 11119 tracing_disabled = 0; 11120 11121 atomic_notifier_chain_register(&panic_notifier_list, 11122 &trace_panic_notifier); 11123 11124 register_die_notifier(&trace_die_notifier); 11125 11126 global_trace.flags = TRACE_ARRAY_FL_GLOBAL; 11127 11128 global_trace.syscall_buf_sz = CONFIG_TRACE_SYSCALL_BUF_SIZE_DEFAULT; 11129 11130 INIT_LIST_HEAD(&global_trace.systems); 11131 INIT_LIST_HEAD(&global_trace.events); 11132 INIT_LIST_HEAD(&global_trace.hist_vars); 11133 INIT_LIST_HEAD(&global_trace.err_log); 11134 list_add(&global_trace.marker_list, &marker_copies); 11135 list_add(&global_trace.list, &ftrace_trace_arrays); 11136 11137 apply_trace_boot_options(); 11138 11139 register_snapshot_cmd(); 11140 11141 return 0; 11142 11143 out_free_pipe_cpumask: 11144 free_cpumask_var(global_trace.pipe_cpumask); 11145 out_free_savedcmd: 11146 trace_free_saved_cmdlines_buffer(); 11147 out_free_temp_buffer: 11148 ring_buffer_free(temp_buffer); 11149 out_rm_hp_state: 11150 cpuhp_remove_multi_state(CPUHP_TRACE_RB_PREPARE); 11151 out_free_cpumask: 11152 free_cpumask_var(global_trace.tracing_cpumask); 11153 out_free_buffer_mask: 11154 free_cpumask_var(tracing_buffer_mask); 11155 return ret; 11156 } 11157 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
