[ammarfaizi2-block:axboe/linux-block/io_uring-5.19 6/6] fs/io_uring.c:6775:1: error: redefinition of 'io_shutdown'

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

tree:   https://github.com/ammarfaizi2/linux-block axboe/linux-block/io_uring-5.19
head:   18f8e4c9acdb48c78db9a29d079a8e8248f7171d
commit: 18f8e4c9acdb48c78db9a29d079a8e8248f7171d [6/6] io_uring: move shutdown under the general net section
config: s390-randconfig-r035-20220524 (https://download.01.org/0day-ci/archive/20220525/202205250952.fOrdanvO-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 10c9ecce9f6096e18222a331c5e7d085bd813f75)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install s390 cross compiling tool for clang build
        # apt-get install binutils-s390x-linux-gnu
        # https://github.com/ammarfaizi2/linux-block/commit/18f8e4c9acdb48c78db9a29d079a8e8248f7171d
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block axboe/linux-block/io_uring-5.19
        git checkout 18f8e4c9acdb48c78db9a29d079a8e8248f7171d
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   In file included from fs/io_uring.c:60:
   In file included from include/linux/blk-mq.h:8:
   In file included from include/linux/scatterlist.h:9:
   In file included from arch/s390/include/asm/io.h:75:
   include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __raw_readb(PCI_IOBASE + addr);
                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
   #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
                                                             ^
   include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
   #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
                                                        ^
   In file included from fs/io_uring.c:60:
   In file included from include/linux/blk-mq.h:8:
   In file included from include/linux/scatterlist.h:9:
   In file included from arch/s390/include/asm/io.h:75:
   include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
   #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
                                                             ^
   include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
   #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
                                                        ^
   In file included from fs/io_uring.c:60:
   In file included from include/linux/blk-mq.h:8:
   In file included from include/linux/scatterlist.h:9:
   In file included from arch/s390/include/asm/io.h:75:
   include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writeb(value, PCI_IOBASE + addr);
                               ~~~~~~~~~~ ^
   include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           readsb(PCI_IOBASE + addr, buffer, count);
                  ~~~~~~~~~~ ^
   include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           readsw(PCI_IOBASE + addr, buffer, count);
                  ~~~~~~~~~~ ^
   include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           readsl(PCI_IOBASE + addr, buffer, count);
                  ~~~~~~~~~~ ^
   include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           writesb(PCI_IOBASE + addr, buffer, count);
                   ~~~~~~~~~~ ^
   include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           writesw(PCI_IOBASE + addr, buffer, count);
                   ~~~~~~~~~~ ^
   include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           writesl(PCI_IOBASE + addr, buffer, count);
                   ~~~~~~~~~~ ^
>> fs/io_uring.c:6775:1: error: redefinition of 'io_shutdown'
   IO_NETOP_FN(shutdown);
   ^
   fs/io_uring.c:6748:12: note: expanded from macro 'IO_NETOP_FN'
   static int io_##op(struct io_kiocb *req, unsigned int issue_flags)      \
              ^
   <scratch space>:183:1: note: expanded from here
   io_shutdown
   ^
   fs/io_uring.c:6772:1: note: previous definition is here
   IO_NETOP_PREP(shutdown);
   ^
   fs/io_uring.c:6753:32: note: expanded from macro 'IO_NETOP_PREP'
   #define IO_NETOP_PREP(op)                                               \
                                                                           ^
   fs/io_uring.c:6748:12: note: expanded from macro '\
   IO_NETOP_FN'
   static int io_##op(struct io_kiocb *req, unsigned int issue_flags)      \
              ^
   <scratch space>:178:1: note: expanded from here
   io_shutdown
   ^
   12 warnings and 1 error generated.


vim +/io_shutdown +6775 fs/io_uring.c

  6766	
  6767	IO_NETOP_PREP_ASYNC(sendmsg);
  6768	IO_NETOP_PREP_ASYNC(recvmsg);
  6769	IO_NETOP_PREP_ASYNC(connect);
  6770	IO_NETOP_PREP(accept);
  6771	IO_NETOP_PREP(socket);
  6772	IO_NETOP_PREP(shutdown);
  6773	IO_NETOP_FN(send);
  6774	IO_NETOP_FN(recv);
> 6775	IO_NETOP_FN(shutdown);
  6776	#endif /* CONFIG_NET */
  6777	

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