[axboe-block:nvme-passthru-wip.2 15/23] 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.2
head:   7567defdb3c6a81e4114a03ddf3d6c158df81a76
commit: bc18161c9b80cf2d647710257f9716ee6c66fee4 [15/23] io_uring: add flag and helper for fixed-buffer uring-cmd
config: hexagon-randconfig-r045-20211220 (https://download.01.org/0day-ci/archive/20211222/202112220501.udx7B2Uz-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6c2bf01270a8a52b7986d5c49eaa7ad1c7083ec5)
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?id=bc18161c9b80cf2d647710257f9716ee6c66fee4
        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.2
        git checkout bc18161c9b80cf2d647710257f9716ee6c66fee4
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon 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 fops.c
   >>> fops.o:(.text+0x0) in archive block/built-in.a
--
   In file included from kernel/fork.c:97:

quoted

include/linux/io_uring.h:58:5: warning: no previous prototype for function 'io_uring_cmd_import_fixed' [-Wmissing-prototypes]

   int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len,
       ^
   include/linux/io_uring.h:58:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len,
   ^
   static 
   kernel/fork.c:161:13: 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:161:1: 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:763:20: warning: no previous prototype for function 'arch_task_cache_init' [-Wmissing-prototypes]
   void __init __weak arch_task_cache_init(void) { }
                      ^
   kernel/fork.c:763:1: 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 
   kernel/fork.c:858:12: warning: no previous prototype for function 'arch_dup_task_struct' [-Wmissing-prototypes]
   int __weak arch_dup_task_struct(struct task_struct *dst,
              ^
   kernel/fork.c:858:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int __weak arch_dup_task_struct(struct task_struct *dst,
   ^
   static 
   4 warnings generated.
--
   In file included from kernel/exit.c:65:

quoted

include/linux/io_uring.h:58:5: warning: no previous prototype for function 'io_uring_cmd_import_fixed' [-Wmissing-prototypes]

   int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len,
       ^
   include/linux/io_uring.h:58:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int io_uring_cmd_import_fixed(u64 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