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Date:   Wed, 6 Jul 2022 10:35:50 +0800
From:   kernel test robot <lkp@...el.com>
To:     Steven Rostedt <rostedt@...dmis.org>, linux-kernel@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Arend van Spriel <aspriel@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Kalle Valo <kvalo@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        linux-wireless@...r.kernel.org,
        brcm80211-dev-list.pdl@...adcom.com,
        SHA-cyfmac-dev-list@...ineon.com, netdev@...r.kernel.org
Subject: Re: [PATCH 04/13] tracing/brcm: Use the new __vstring() helper

Hi Steven,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on rostedt-trace/for-next]
[also build test WARNING on wireless-next/main wireless/main linus/master v5.19-rc5 next-20220705]
[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]

url:    https://github.com/intel-lab-lkp/linux/commits/Steven-Rostedt/tracing-events-Add-__vstring-and-__assign_vstr-helpers/20220706-065125
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git for-next
config: i386-allyesconfig
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/3c932e272fbef5f880bf07599554747106044b06
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Steven-Rostedt/tracing-events-Add-__vstring-and-__assign_vstr-helpers/20220706-065125
        git checkout 3c932e272fbef5f880bf07599554747106044b06
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/net/wireless/broadcom/brcm80211/brcmfmac/ drivers/net/wireless/broadcom/brcm80211/brcmsmac/ drivers/net/wireless/intel/iwlwifi/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   In file included from include/trace/define_trace.h:102,
                    from drivers/net/wireless/broadcom/brcm80211/brcmfmac/tracepoint.h:133,
                    from drivers/net/wireless/broadcom/brcm80211/brcmfmac/tracepoint.c:12:
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/./tracepoint.h: In function 'trace_event_get_offsets_brcmf_err':
>> include/trace/trace_events.h:261:16: warning: function 'trace_event_get_offsets_brcmf_err' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
     261 |         struct trace_event_raw_##call __maybe_unused *entry;            \
         |                ^~~~~~~~~~~~~~~~
   include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      40 |         DECLARE_EVENT_CLASS(name,                              \
         |         ^~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/./tracepoint.h:31:1: note: in expansion of macro 'TRACE_EVENT'
      31 | TRACE_EVENT(brcmf_err,
         | ^~~~~~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/./tracepoint.h: In function 'trace_event_get_offsets_brcmf_dbg':
>> include/trace/trace_events.h:261:16: warning: function 'trace_event_get_offsets_brcmf_dbg' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
     261 |         struct trace_event_raw_##call __maybe_unused *entry;            \
         |                ^~~~~~~~~~~~~~~~
   include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      40 |         DECLARE_EVENT_CLASS(name,                              \
         |         ^~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/./tracepoint.h:45:1: note: in expansion of macro 'TRACE_EVENT'
      45 | TRACE_EVENT(brcmf_dbg,
         | ^~~~~~~~~~~
   In file included from include/trace/define_trace.h:102,
                    from drivers/net/wireless/broadcom/brcm80211/brcmfmac/tracepoint.h:133,
                    from drivers/net/wireless/broadcom/brcm80211/brcmfmac/tracepoint.c:12:
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/./tracepoint.h: In function 'trace_event_raw_event_brcmf_err':
   include/trace/trace_events.h:386:16: warning: function 'trace_event_raw_event_brcmf_err' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
     386 |         struct trace_event_raw_##call *entry;                           \
         |                ^~~~~~~~~~~~~~~~
   include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      40 |         DECLARE_EVENT_CLASS(name,                              \
         |         ^~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/./tracepoint.h:31:1: note: in expansion of macro 'TRACE_EVENT'
      31 | TRACE_EVENT(brcmf_err,
         | ^~~~~~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/./tracepoint.h: In function 'trace_event_raw_event_brcmf_dbg':
   include/trace/trace_events.h:386:16: warning: function 'trace_event_raw_event_brcmf_dbg' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
     386 |         struct trace_event_raw_##call *entry;                           \
         |                ^~~~~~~~~~~~~~~~
   include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      40 |         DECLARE_EVENT_CLASS(name,                              \
         |         ^~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/./tracepoint.h:45:1: note: in expansion of macro 'TRACE_EVENT'
      45 | TRACE_EVENT(brcmf_dbg,
         | ^~~~~~~~~~~
   In file included from include/trace/define_trace.h:103,
                    from drivers/net/wireless/broadcom/brcm80211/brcmfmac/tracepoint.h:133,
                    from drivers/net/wireless/broadcom/brcm80211/brcmfmac/tracepoint.c:12:
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/./tracepoint.h: In function 'perf_trace_brcmf_err':
   include/trace/perf.h:64:16: warning: function 'perf_trace_brcmf_err' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
      64 |         struct hlist_head *head;                                        \
         |                ^~~~~~~~~~
   include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      40 |         DECLARE_EVENT_CLASS(name,                              \
         |         ^~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/./tracepoint.h:31:1: note: in expansion of macro 'TRACE_EVENT'
      31 | TRACE_EVENT(brcmf_err,
         | ^~~~~~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/./tracepoint.h: In function 'perf_trace_brcmf_dbg':
   include/trace/perf.h:64:16: warning: function 'perf_trace_brcmf_dbg' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
      64 |         struct hlist_head *head;                                        \
         |                ^~~~~~~~~~
   include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      40 |         DECLARE_EVENT_CLASS(name,                              \
         |         ^~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/./tracepoint.h:45:1: note: in expansion of macro 'TRACE_EVENT'
      45 | TRACE_EVENT(brcmf_dbg,
         | ^~~~~~~~~~~
--
   In file included from include/trace/define_trace.h:102,
                    from drivers/net/wireless/broadcom/brcm80211/brcmsmac/brcms_trace_brcmsmac_msg.h:82,
                    from drivers/net/wireless/broadcom/brcm80211/brcmsmac/brcms_trace_events.h:38,
                    from drivers/net/wireless/broadcom/brcm80211/brcmsmac/brcms_trace_events.c:22:
   drivers/net/wireless/broadcom/brcm80211/brcmsmac/./brcms_trace_brcmsmac_msg.h: In function 'trace_event_get_offsets_brcms_dbg':
>> include/trace/trace_events.h:261:16: warning: function 'trace_event_get_offsets_brcms_dbg' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
     261 |         struct trace_event_raw_##call __maybe_unused *entry;            \
         |                ^~~~~~~~~~~~~~~~
   include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      40 |         DECLARE_EVENT_CLASS(name,                              \
         |         ^~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmsmac/./brcms_trace_brcmsmac_msg.h:59:1: note: in expansion of macro 'TRACE_EVENT'
      59 | TRACE_EVENT(brcms_dbg,
         | ^~~~~~~~~~~
   In file included from include/trace/define_trace.h:102,
                    from drivers/net/wireless/broadcom/brcm80211/brcmsmac/brcms_trace_brcmsmac_msg.h:82,
                    from drivers/net/wireless/broadcom/brcm80211/brcmsmac/brcms_trace_events.h:38,
                    from drivers/net/wireless/broadcom/brcm80211/brcmsmac/brcms_trace_events.c:22:
   drivers/net/wireless/broadcom/brcm80211/brcmsmac/./brcms_trace_brcmsmac_msg.h: In function 'trace_event_raw_event_brcms_dbg':
   include/trace/trace_events.h:386:16: warning: function 'trace_event_raw_event_brcms_dbg' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
     386 |         struct trace_event_raw_##call *entry;                           \
         |                ^~~~~~~~~~~~~~~~
   include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      40 |         DECLARE_EVENT_CLASS(name,                              \
         |         ^~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmsmac/./brcms_trace_brcmsmac_msg.h:59:1: note: in expansion of macro 'TRACE_EVENT'
      59 | TRACE_EVENT(brcms_dbg,
         | ^~~~~~~~~~~
   In file included from include/trace/define_trace.h:103,
                    from drivers/net/wireless/broadcom/brcm80211/brcmsmac/brcms_trace_brcmsmac_msg.h:82,
                    from drivers/net/wireless/broadcom/brcm80211/brcmsmac/brcms_trace_events.h:38,
                    from drivers/net/wireless/broadcom/brcm80211/brcmsmac/brcms_trace_events.c:22:
   drivers/net/wireless/broadcom/brcm80211/brcmsmac/./brcms_trace_brcmsmac_msg.h: In function 'perf_trace_brcms_dbg':
   include/trace/perf.h:64:16: warning: function 'perf_trace_brcms_dbg' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
      64 |         struct hlist_head *head;                                        \
         |                ^~~~~~~~~~
   include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS'
      40 |         DECLARE_EVENT_CLASS(name,                              \
         |         ^~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmsmac/./brcms_trace_brcmsmac_msg.h:59:1: note: in expansion of macro 'TRACE_EVENT'
      59 | TRACE_EVENT(brcms_dbg,
         | ^~~~~~~~~~~


vim +261 include/trace/trace_events.h

55de2c0b5610cb include/trace/trace_events.h Masami Hiramatsu         2021-11-22  253  
091ad3658e3c76 include/trace/ftrace.h       Ingo Molnar              2009-11-26  254  #undef DECLARE_EVENT_CLASS
091ad3658e3c76 include/trace/ftrace.h       Ingo Molnar              2009-11-26  255  #define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)	\
d0ee8f4a1f5f3d include/trace/trace_events.h Steven Rostedt (Red Hat  2015-05-13  256) static inline notrace int trace_event_get_offsets_##call(		\
62323a148fbeb0 include/trace/trace_events.h Steven Rostedt (Red Hat  2015-05-13  257) 	struct trace_event_data_offsets_##call *__data_offsets, proto)	\
7fcb7c472f455d include/trace/ftrace.h       Li Zefan                 2009-06-01  258  {									\
7fcb7c472f455d include/trace/ftrace.h       Li Zefan                 2009-06-01  259  	int __data_size = 0;						\
114e7b52dee69c include/trace/ftrace.h       Filipe Brandenburger     2014-02-28  260  	int __maybe_unused __item_length;				\
a7237765730a10 include/trace/trace_events.h Steven Rostedt (Red Hat  2015-05-13 @261) 	struct trace_event_raw_##call __maybe_unused *entry;		\
7fcb7c472f455d include/trace/ftrace.h       Li Zefan                 2009-06-01  262  									\
7fcb7c472f455d include/trace/ftrace.h       Li Zefan                 2009-06-01  263  	tstruct;							\
7fcb7c472f455d include/trace/ftrace.h       Li Zefan                 2009-06-01  264  									\
7fcb7c472f455d include/trace/ftrace.h       Li Zefan                 2009-06-01  265  	return __data_size;						\
7fcb7c472f455d include/trace/ftrace.h       Li Zefan                 2009-06-01  266  }
7fcb7c472f455d include/trace/ftrace.h       Li Zefan                 2009-06-01  267  

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