linux-kernel - Re: [PATCH] tracing: Add an option to show symbols in

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Message-ID: <20250919131621.093295c8@gandalf.local.home>
Date: Fri, 19 Sep 2025 13:16:21 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: kernel test robot <lkp@...el.com>
Cc: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>,
 oe-kbuild-all@...ts.linux.dev, Mark Rutland <mark.rutland@....com>, Mathieu
 Desnoyers <mathieu.desnoyers@...icios.com>, linux-kernel@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org
Subject: Re: [PATCH] tracing: Add an option to show symbols in _text+offset
 for function profiler

On Sat, 20 Sep 2025 01:09:52 +0800
kernel test robot <lkp@...el.com> wrote:

> Hi Masami,
> 
> 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-rc6 next-20250918]
> [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/Masami-Hiramatsu-Google/tracing-Add-an-option-to-show-symbols-in-_text-offset-for-function-profiler/20250919-135733
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next
> patch link:    https://lore.kernel.org/r/175826135058.101165.7219957344129610147.stgit%40devnote2
> patch subject: [PATCH] tracing: Add an option to show symbols in _text+offset for function profiler
> config: x86_64-buildonly-randconfig-002-20250919 (https://download.01.org/0day-ci/archive/20250920/202509200000.EJ4InVti-lkp@intel.com/config)
> compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250920/202509200000.EJ4InVti-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@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202509200000.EJ4InVti-lkp@intel.com/
> 
> All error/warnings (new ones prefixed by >>):
> 
>    In file included from kernel/trace/trace_sched_switch.c:15:
> >> kernel/trace/trace.h:1422:37: warning: left shift count >= width of type [-Wshift-count-overflow]  
>     1422 | #define C(a, b) TRACE_ITER_##a = (1 << TRACE_ITER_##a##_BIT)
>          |                                     ^~

Ouch! We need to make the option enum64 now!

-- Steve