[axboe-block:nvme-passthru-wip 12/19] ld.lld: error: duplicate symbol: io_uring_cmd_import_fixed

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git nvme-passthru-wip
head:   9c18980ac90053bcdb21594eae48935d89bf389c
commit: 069d94370113e6543d01ae4af5646cdabc0c5a02 [12/19] io_uring: add helper for fixed-buffer uring-cmd
config: riscv-randconfig-r042-20211007 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 58b68e70ebf6308f982426a2618782f473218eed)
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 riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?id=069d94370113e6543d01ae4af5646cdabc0c5a02
        git remote add axboe-block https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
        git fetch --no-tags axboe-block nvme-passthru-wip
        git checkout 069d94370113e6543d01ae4af5646cdabc0c5a02
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All error/warnings (new ones prefixed by >>):

quoted

ld.lld: error: duplicate symbol: io_uring_cmd_import_fixed

   >>> defined at fork.c
   >>> fork.o:(io_uring_cmd_import_fixed) in archive kernel/built-in.a
   >>> defined at exit.c
   >>> exit.o:(.text+0x0) in archive kernel/built-in.a
--

quoted

ld.lld: error: duplicate symbol: io_uring_cmd_import_fixed

   >>> defined at fork.c
   >>> fork.o:(io_uring_cmd_import_fixed) in archive kernel/built-in.a
   >>> defined at exec.c
   >>> exec.o:(.text+0x0) in archive fs/built-in.a
--

quoted

ld.lld: error: duplicate symbol: io_uring_cmd_import_fixed

   >>> defined at fork.c
   >>> fork.o:(io_uring_cmd_import_fixed) in archive kernel/built-in.a
   >>> defined at socket.c
   >>> socket.o:(.text+0x0) in archive net/built-in.a
--
   In file included from kernel/fork.c:98:

quoted

include/linux/io_uring.h:55:5: warning: no previous prototype for function 'io_uring_cmd_import_fixed' [-Wmissing-prototypes]

   int io_uring_cmd_import_fixed(void *ubuf, unsigned long len,
       ^
   include/linux/io_uring.h:55:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int io_uring_cmd_import_fixed(void *ubuf, unsigned long len,
   ^
   static 
   kernel/fork.c:162:13: warning: no previous prototype for function 'arch_release_task_struct' [-Wmissing-prototypes]
   void __weak arch_release_task_struct(struct task_struct *tsk)
               ^
   kernel/fork.c:162:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __weak arch_release_task_struct(struct task_struct *tsk)
   ^
   static 
   kernel/fork.c:764:20: warning: no previous prototype for function 'arch_task_cache_init' [-Wmissing-prototypes]
   void __init __weak arch_task_cache_init(void) { }
                      ^
   kernel/fork.c:764:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __init __weak arch_task_cache_init(void) { }
   ^
   static 
   3 warnings generated.
--
   In file included from kernel/exit.c:66:

quoted

include/linux/io_uring.h:55:5: warning: no previous prototype for function 'io_uring_cmd_import_fixed' [-Wmissing-prototypes]

   int io_uring_cmd_import_fixed(void *ubuf, unsigned long len,
       ^
   include/linux/io_uring.h:55:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int io_uring_cmd_import_fixed(void *ubuf, unsigned long len,
   ^
   static 
   1 warning generated.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org