On Wed, 30 Jul 2025 14:27:08 +0800
kernel test robot [off-list ref] wrote:

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@intel.com/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@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 [off-list ref]
| Closes: https://lore.kernel.org/oe-kbuild-all/202507301452.JPAcMvT0-lkp@intel.com/ (local)

All errors (new ones prefixed by >>):

   kernel/trace/trace_probe.c: In function 'parse_probe_arg':

quoted

quoted

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

Interesting, this find another issue. Since this is provided by
CONFIG_PROBE_EVENTS, we need to fix CONFIG_PROBE_EVENTS depending
on HAVE_REGS_AND_STACK_ACCESS_API.

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index a3f35c7d83b6..cd239240b0ef 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig

@@ -792,6 +792,7 @@ config DYNAMIC_EVENTS
        def_bool n
 
 config PROBE_EVENTS
+       depends on HAVE_REGS_AND_STACK_ACCESS_API
        def_bool n
 
 config BPF_KPROBE_OVERRIDE

-- 
Masami Hiramatsu (Google) <mhiramat@kernel.org>