linux-kernel - Re: [PATCH] binder: use standard functions to allocate fds

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Message-ID: <201808290342.D4e4IxTI%fengguang.wu@intel.com>
Date:   Wed, 29 Aug 2018 03:42:12 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Todd Kjos <tkjos@...roid.com>
Cc:     kbuild-all@...org, tkjos@...gle.com, gregkh@...uxfoundation.org,
        arve@...roid.com, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, maco@...gle.com,
        christian.brauner@...onical.com, ben@...adent.org.uk
Subject: Re: [PATCH] binder: use standard functions to allocate fds

Hi Todd,

I love your patch! Perhaps something to improve:

[auto build test WARNING on staging/staging-testing]
[also build test WARNING on v4.19-rc1 next-20180828]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Todd-Kjos/binder-use-standard-functions-to-allocate-fds/20180829-022204
config: i386-randconfig-x016-201834 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   In file included from include/trace/define_trace.h:96:0,
                    from drivers/android/binder_trace.h:408,
                    from drivers/android/binder.c:5781:
   drivers/android/./binder_trace.h: In function 'trace_raw_output_binder_transaction_fd_send':
>> drivers/android/./binder_trace.h:240:12: warning: format '%ld' expects argument of type 'long int', but argument 5 has type 'size_t {aka unsigned int}' [-Wformat=]
     TP_printk("transaction=%d src_fd=%d offset=%ld",
               ^
   include/trace/trace_events.h:360:22: note: in definition of macro 'DECLARE_EVENT_CLASS'
     trace_seq_printf(s, print);     \
                         ^~~~~
   include/trace/trace_events.h:79:9: note: in expansion of macro 'PARAMS'
            PARAMS(print));         \
            ^~~~~~
>> drivers/android/./binder_trace.h:226:1: note: in expansion of macro 'TRACE_EVENT'
    TRACE_EVENT(binder_transaction_fd_send,
    ^~~~~~~~~~~
>> drivers/android/./binder_trace.h:240:2: note: in expansion of macro 'TP_printk'
     TP_printk("transaction=%d src_fd=%d offset=%ld",
     ^~~~~~~~~
   In file included from include/trace/trace_events.h:394:0,
                    from include/trace/define_trace.h:96,
                    from drivers/android/binder_trace.h:408,
                    from drivers/android/binder.c:5781:
   drivers/android/./binder_trace.h:240:47: note: format string is defined here
     TP_printk("transaction=%d src_fd=%d offset=%ld",
                                                ~~^
                                                %d
   In file included from include/trace/define_trace.h:96:0,
                    from drivers/android/binder_trace.h:408,
                    from drivers/android/binder.c:5781:
   drivers/android/./binder_trace.h: In function 'trace_raw_output_binder_transaction_fd_recv':
   drivers/android/./binder_trace.h:258:12: warning: format '%ld' expects argument of type 'long int', but argument 5 has type 'size_t {aka unsigned int}' [-Wformat=]
     TP_printk("transaction=%d dest_fd=%d offset=%ld",
               ^
   include/trace/trace_events.h:360:22: note: in definition of macro 'DECLARE_EVENT_CLASS'
     trace_seq_printf(s, print);     \
                         ^~~~~
   include/trace/trace_events.h:79:9: note: in expansion of macro 'PARAMS'
            PARAMS(print));         \
            ^~~~~~
   drivers/android/./binder_trace.h:244:1: note: in expansion of macro 'TRACE_EVENT'
    TRACE_EVENT(binder_transaction_fd_recv,
    ^~~~~~~~~~~
   drivers/android/./binder_trace.h:258:2: note: in expansion of macro 'TP_printk'
     TP_printk("transaction=%d dest_fd=%d offset=%ld",
     ^~~~~~~~~
   In file included from include/trace/trace_events.h:394:0,
                    from include/trace/define_trace.h:96,
                    from drivers/android/binder_trace.h:408,
                    from drivers/android/binder.c:5781:
   drivers/android/./binder_trace.h:258:48: note: format string is defined here
     TP_printk("transaction=%d dest_fd=%d offset=%ld",
                                                 ~~^
                                                 %d

vim +240 drivers/android/./binder_trace.h

   225	
 > 226	TRACE_EVENT(binder_transaction_fd_send,
   227		TP_PROTO(struct binder_transaction *t, int fd, size_t offset),
   228		TP_ARGS(t, fd, offset),
   229	
   230		TP_STRUCT__entry(
   231			__field(int, debug_id)
   232			__field(int, fd)
   233			__field(size_t, offset)
   234		),
   235		TP_fast_assign(
   236			__entry->debug_id = t->debug_id;
   237			__entry->fd = fd;
   238			__entry->offset = offset;
   239		),
 > 240		TP_printk("transaction=%d src_fd=%d offset=%ld",
   241			  __entry->debug_id, __entry->fd, __entry->offset)
   242	);
   243	

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