[linux-stable-rc:linux-5.15.y 5881/9999] mremap_test.c:126:13: error: redefinition of 'is_remap_region_valid'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
head:   820b689b4a7a6ca1b4fdabf26a17196a2e379a97
commit: 0b4e16093e081a3ab08b0d6cedf79b249f41b248 [5881/9999] selftest/vm: verify remap destination address in mremap_test
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce:
        # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=0b4e16093e081a3ab08b0d6cedf79b249f41b248
        git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
        git fetch --no-tags linux-stable-rc linux-5.15.y
        git checkout 0b4e16093e081a3ab08b0d6cedf79b249f41b248
        make O=/tmp/kselftest headers
        make O=/tmp/kselftest -C tools/testing/selftests

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

Note: the linux-stable-rc/linux-5.15.y HEAD 820b689b4a7a6ca1b4fdabf26a17196a2e379a97 builds fine.
      It only hurts bisectability.

All errors (new ones prefixed by >>):

>> mremap_test.c:126:13: error: redefinition of 'is_remap_region_valid'
     126 | static bool is_remap_region_valid(void *addr, unsigned long long size)
         |             ^~~~~~~~~~~~~~~~~~~~~
   mremap_test.c:73:13: note: previous definition of 'is_remap_region_valid' with type '_Bool(void *, long long unsigned int)'
      73 | static bool is_remap_region_valid(void *addr, unsigned long long size)
         |             ^~~~~~~~~~~~~~~~~~~~~
   mremap_test.c:147:27: error: redefinition of 'get_mmap_min_addr'
     147 | static unsigned long long get_mmap_min_addr(void)
         |                           ^~~~~~~~~~~~~~~~~
   mremap_test.c:94:27: note: previous definition of 'get_mmap_min_addr' with type 'long long unsigned int(void)'
      94 | static unsigned long long get_mmap_min_addr(void)
         |                           ^~~~~~~~~~~~~~~~~
   mremap_test.c:94:27: warning: 'get_mmap_min_addr' defined but not used [-Wunused-function]
   mremap_test.c:73:13: warning: 'is_remap_region_valid' defined but not used [-Wunused-function]
      73 | static bool is_remap_region_valid(void *addr, unsigned long long size)
         |             ^~~~~~~~~~~~~~~~~~~~~

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