Re: [PATCH v1 1/1] sunrpc: Fix compilation error (`make W=1`) when dprintk() is no-op

[kernel test robot <lkp@intel.com>]

Hi Andy,

kernel test robot noticed the following build errors:

[auto build test ERROR on trondmy-nfs/linux-next]
[also build test ERROR on linus/master v6.19-rc8 next-20260203]
[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/Andy-Shevchenko/sunrpc-Fix-compilation-error-make-W-1-when-dprintk-is-no-op/20260204-091033
base:   git://git.linux-nfs.org/projects/trondmy/linux-nfs.git linux-next
patch link:    https://lore.kernel.org/r/20260204010415.2149607-1-andriy.shevchenko%40linux.intel.com
patch subject: [PATCH v1 1/1] sunrpc: Fix compilation error (`make W=1`) when dprintk() is no-op
config: m68k-defconfig (https://download.01.org/0day-ci/archive/20260204/202602041401.iqlBqvkr-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260204/202602041401.iqlBqvkr-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202602041401.iqlBqvkr-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/asm-generic/bug.h:31,
                    from arch/m68k/include/asm/bug.h:32,
                    from include/linux/bug.h:5,
                    from include/linux/thread_info.h:13,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/m68k/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:79,
                    from arch/m68k/include/asm/processor.h:11,
                    from include/linux/sched.h:13,
                    from include/linux/sunrpc/svcauth_gss.h:12,
                    from fs/nfsd/nfsfh.c:13:
   fs/nfsd/nfsfh.c: In function 'nfsd_setuser_and_check_port':
>> fs/nfsd/nfsfh.c:110:47: error: 'buf' undeclared (first use in this function); did you mean 'btf'?
     110 |                         svc_print_addr(rqstp, buf, sizeof(buf)));
         |                                               ^~~
   include/linux/printk.h:135:32: note: in definition of macro 'no_printk'
     135 |                 _printk(fmt, ##__VA_ARGS__);            \
         |                                ^~~~~~~~~~~
   include/linux/sunrpc/debug.h:25:9: note: in expansion of macro 'dfprintk'
      25 |         dfprintk(FACILITY, fmt, ##__VA_ARGS__)
         |         ^~~~~~~~
   fs/nfsd/nfsfh.c:109:17: note: in expansion of macro 'dprintk'
     109 |                 dprintk("nfsd: request from insecure port %s!\n",
         |                 ^~~~~~~
   fs/nfsd/nfsfh.c:110:47: note: each undeclared identifier is reported only once for each function it appears in
     110 |                         svc_print_addr(rqstp, buf, sizeof(buf)));
         |                                               ^~~
   include/linux/printk.h:135:32: note: in definition of macro 'no_printk'
     135 |                 _printk(fmt, ##__VA_ARGS__);            \
         |                                ^~~~~~~~~~~
   include/linux/sunrpc/debug.h:25:9: note: in expansion of macro 'dfprintk'
      25 |         dfprintk(FACILITY, fmt, ##__VA_ARGS__)
         |         ^~~~~~~~
   fs/nfsd/nfsfh.c:109:17: note: in expansion of macro 'dprintk'
     109 |                 dprintk("nfsd: request from insecure port %s!\n",
         |                 ^~~~~~~


vim +110 fs/nfsd/nfsfh.c

9d7ed1355db5b00 J. Bruce Fields 2018-03-08  101  
6fa02839bf9412e J. Bruce Fields 2007-11-12  102  static __be32 nfsd_setuser_and_check_port(struct svc_rqst *rqstp,
b0d87dbd8bd311d NeilBrown       2024-09-05  103  					  struct svc_cred *cred,
6fa02839bf9412e J. Bruce Fields 2007-11-12  104  					  struct svc_export *exp)
6fa02839bf9412e J. Bruce Fields 2007-11-12  105  {
6fa02839bf9412e J. Bruce Fields 2007-11-12  106  	/* Check if the request originated from a secure port. */
b0d87dbd8bd311d NeilBrown       2024-09-05  107  	if (rqstp && !nfsd_originating_port_ok(rqstp, cred, exp)) {
5216a8e70e25b01 Pavel Emelyanov 2008-02-21  108  		RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
a48fd0f9f77b6e1 Kinglong Mee    2014-05-29  109  		dprintk("nfsd: request from insecure port %s!\n",
6fa02839bf9412e J. Bruce Fields 2007-11-12 @110  		        svc_print_addr(rqstp, buf, sizeof(buf)));
6fa02839bf9412e J. Bruce Fields 2007-11-12  111  		return nfserr_perm;
6fa02839bf9412e J. Bruce Fields 2007-11-12  112  	}
6fa02839bf9412e J. Bruce Fields 2007-11-12  113  
6fa02839bf9412e J. Bruce Fields 2007-11-12  114  	/* Set user creds for this exportpoint */
b0d87dbd8bd311d NeilBrown       2024-09-05  115  	return nfserrno(nfsd_setuser(cred, exp));
6fa02839bf9412e J. Bruce Fields 2007-11-12  116  }
6fa02839bf9412e J. Bruce Fields 2007-11-12  117  

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