linux-kernel - include/trace/trace_events.h:261:16: error: function 'trace_event_get_offsets_iwlwifi_dbg' might be a candidate for 'gnu

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Message-ID: <202208250229.UZTZVPeu-lkp@intel.com>
Date:   Thu, 25 Aug 2022 02:17:22 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Steven Rostedt (Google)" <rostedt@...dmis.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: include/trace/trace_events.h:261:16: error: function
 'trace_event_get_offsets_iwlwifi_dbg' might be a candidate for 'gnu_printf'
 format attribute

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   c40e8341e3b3bb27e3a65b06b5b454626234c4f0
commit: c7c37bb87590886e08d24dec53089f74b89f5fbb tracing/iwlwifi: Use the new __vstring() helper
date:   6 weeks ago
config: x86_64-sof-customedconfig-edison-defconfig (https://download.01.org/0day-ci/archive/20220825/202208250229.UZTZVPeu-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c7c37bb87590886e08d24dec53089f74b89f5fbb
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout c7c37bb87590886e08d24dec53089f74b89f5fbb
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash 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 errors (new ones prefixed by >>):

   In file included from include/trace/define_trace.h:102,
                    from drivers/net/wireless/intel/iwlwifi/iwl-devtrace-msg.h:71,
                    from drivers/net/wireless/intel/iwlwifi/iwl-devtrace.h:91,
                    from drivers/net/wireless/intel/iwlwifi/iwl-devtrace.c:15:
   drivers/net/wireless/intel/iwlwifi/./iwl-devtrace-msg.h: In function 'trace_event_get_offsets_iwlwifi_dbg':
>> include/trace/trace_events.h:261:16: error: function 'trace_event_get_offsets_iwlwifi_dbg' might be a candidate for 'gnu_printf' format attribute [-Werror=suggest-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/intel/iwlwifi/./iwl-devtrace-msg.h:49:1: note: in expansion of macro 'TRACE_EVENT'
      49 | TRACE_EVENT(iwlwifi_dbg,
         | ^~~~~~~~~~~
   In file included from include/trace/define_trace.h:102,
                    from drivers/net/wireless/intel/iwlwifi/iwl-devtrace-msg.h:71,
                    from drivers/net/wireless/intel/iwlwifi/iwl-devtrace.h:91,
                    from drivers/net/wireless/intel/iwlwifi/iwl-devtrace.c:15:
   drivers/net/wireless/intel/iwlwifi/./iwl-devtrace-msg.h: In function 'trace_event_raw_event_iwlwifi_dbg':
   include/trace/trace_events.h:386:16: error: function 'trace_event_raw_event_iwlwifi_dbg' might be a candidate for 'gnu_printf' format attribute [-Werror=suggest-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/intel/iwlwifi/./iwl-devtrace-msg.h:49:1: note: in expansion of macro 'TRACE_EVENT'
      49 | TRACE_EVENT(iwlwifi_dbg,
         | ^~~~~~~~~~~
   In file included from include/trace/define_trace.h:103,
                    from drivers/net/wireless/intel/iwlwifi/iwl-devtrace-msg.h:71,
                    from drivers/net/wireless/intel/iwlwifi/iwl-devtrace.h:91,
                    from drivers/net/wireless/intel/iwlwifi/iwl-devtrace.c:15:
   drivers/net/wireless/intel/iwlwifi/./iwl-devtrace-msg.h: In function 'perf_trace_iwlwifi_dbg':
   include/trace/perf.h:64:16: error: function 'perf_trace_iwlwifi_dbg' might be a candidate for 'gnu_printf' format attribute [-Werror=suggest-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/intel/iwlwifi/./iwl-devtrace-msg.h:49:1: note: in expansion of macro 'TRACE_EVENT'
      49 | TRACE_EVENT(iwlwifi_dbg,
         | ^~~~~~~~~~~
   cc1: all warnings being treated as errors


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  

:::::: The code at line 261 was first introduced by commit
:::::: a7237765730a10d429736f47ac4b89779ec6c534 tracing: Rename ftrace_raw_##call event structures to trace_event_raw_##call

:::::: TO: Steven Rostedt (Red Hat) <rostedt@...dmis.org>
:::::: CC: Steven Rostedt <rostedt@...dmis.org>

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