* Re: [PATCH 7/7] tracing: Add syscall_user_buf_size to limit amount written
[not found] <20250805193235.747004484@kernel.org>
@ 2025-08-06 14:50 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2025-08-06 14:50 UTC (permalink / raw)
To: Steven Rostedt, linux-kernel, linux-trace-kernel
Cc: llvm, oe-kbuild-all, Masami Hiramatsu, Mark Rutland,
Mathieu Desnoyers, Andrew Morton, Linux Memory Management List,
Peter Zijlstra, Namhyung Kim, Takaya Saeki, Tom Zanussi,
Thomas Gleixner, Ian Rogers, aahringo, Douglas Raillard
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 v6.16 next-20250806]
[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/20250806-122312
base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next
patch link: https://lore.kernel.org/r/20250805193235.747004484%40kernel.org
patch subject: [PATCH 7/7] tracing: Add syscall_user_buf_size to limit amount written
config: hexagon-randconfig-002-20250806 (https://download.01.org/0day-ci/archive/20250806/202508062211.cwYqtLu0-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 7b8dea265e72c3037b6b1e54d5ab51b7e14f328b)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250806/202508062211.cwYqtLu0-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508062211.cwYqtLu0-lkp@intel.com/
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
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