linux-kernel - Re: [Patch v4 14/22] CIFS: SMBD: Implement function to send data via RDMA send

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Date:   Wed, 4 Oct 2017 18:05:20 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Long Li <longli@...hange.microsoft.com>
Cc:     kbuild-all@...org, Steve French <sfrench@...ba.org>,
        linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
        linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
        Christoph Hellwig <hch@...radead.org>,
        Tom Talpey <ttalpey@...rosoft.com>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Long Li <longli@...rosoft.com>
Subject: Re: [Patch v4 14/22] CIFS: SMBD: Implement function to send data via
 RDMA send

Hi Long,

[auto build test WARNING on cifs/for-next]
[also build test WARNING on v4.14-rc3 next-20170929]
[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/Long-Li/CIFS-Implement-SMBDirect/20171004-165915
base:   git://git.samba.org/sfrench/cifs-2.6.git for-next
config: i386-randconfig-x005-201740 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   fs/cifs/smbdirect.c: In function 'smbd_recv_page':
   fs/cifs/smbdirect.c:1983:15: error: implicit declaration of function 'kmap_atomic' [-Werror=implicit-function-declaration]
     to_address = kmap_atomic(page);
                  ^~~~~~~~~~~
   fs/cifs/smbdirect.c:1983:13: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
     to_address = kmap_atomic(page);
                ^
   fs/cifs/smbdirect.c:1989:2: error: implicit declaration of function 'kunmap_atomic' [-Werror=implicit-function-declaration]
     kunmap_atomic(to_address);
     ^~~~~~~~~~~~~
   In file included from include/linux/kernel.h:13:0,
                    from include/linux/list.h:8,
                    from include/linux/module.h:9,
                    from fs/cifs/smbdirect.c:16:
   fs/cifs/smbdirect.c: In function 'smbd_send':
>> include/linux/kern_levels.h:4:18: warning: format '%lu' expects argument of type 'long unsigned int', but argument 6 has type 'size_t {aka unsigned int}' [-Wformat=]
    #define KERN_SOH "\001"  /* ASCII Start Of Header */
                     ^
   include/linux/printk.h:136:11: note: in definition of macro 'no_printk'
       printk(fmt, ##__VA_ARGS__); \
              ^~~
   include/linux/kern_levels.h:14:20: note: in expansion of macro 'KERN_SOH'
    #define KERN_DEBUG KERN_SOH "7" /* debug-level messages */
                       ^~~~~~~~
   include/linux/printk.h:339:12: note: in expansion of macro 'KERN_DEBUG'
     no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
               ^~~~~~~~~~
>> fs/cifs/cifs_debug.h:72:3: note: in expansion of macro 'pr_debug'
      pr_debug(fmt, ##__VA_ARGS__);    \
      ^~~~~~~~
   fs/cifs/smbdirect.c:143:3: note: in expansion of macro 'cifs_dbg'
      cifs_dbg(VFS, "%s:%d " fmt, __func__, __LINE__, ##args);\
      ^~~~~~~~
   fs/cifs/smbdirect.c:151:40: note: in expansion of macro 'log_rdma'
    #define log_write(level, fmt, args...) log_rdma(level, LOG_WRITE, fmt, ##args)
                                           ^~~~~~~~
   fs/cifs/smbdirect.c:2148:6: note: in expansion of macro 'log_write'
         log_write(INFO,
         ^~~~~~~~~
   cc1: some warnings being treated as errors

vim +4 include/linux/kern_levels.h

314ba352 Joe Perches 2012-07-30  3  
04d2c8c8 Joe Perches 2012-07-30 @4  #define KERN_SOH	"\001"		/* ASCII Start Of Header */
04d2c8c8 Joe Perches 2012-07-30  5  #define KERN_SOH_ASCII	'\001'
04d2c8c8 Joe Perches 2012-07-30  6  

:::::: The code at line 4 was first introduced by commit
:::::: 04d2c8c83d0e3ac5f78aeede51babb3236200112 printk: convert the format for KERN_<LEVEL> to a 2 byte pattern

:::::: TO: Joe Perches <joe@...ches.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

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