====== Cleaning ======
../../../scripts/Makefile.include:4: *** O=build_tools/ does not exist.  Stop.
 ====== Baseline building the tree ======
In file included from iommufd_utils.h:11,
                 from iommufd.c:12:
In function ‘_test_cmd_get_hw_info’,
    inlined from ‘iommufd_ioas_get_hw_info’ at iommufd.c:794:3,
    inlined from ‘wrapper_iommufd_ioas_get_hw_info’ at iommufd.c:754:1:
iommufd_utils.h:817:37: warning: array subscript ‘struct iommu_test_hw_info[0]’ is partly outside array bounds of ‘struct iommu_test_hw_info_buffer_smaller[1]’ [-Warray-bounds=]
  817 |                         assert(!info->flags);
      |                                 ~~~~^~~~~~~
iommufd.c: In function ‘wrapper_iommufd_ioas_get_hw_info’:
iommufd.c:763:11: note: object ‘buffer_smaller’ of size 4
  763 |         } buffer_smaller;
      |           ^~~~~~~~~~~~~~
udpclash.c:33:26: error: implicit declaration of function ‘ATOMIC_VAR_INIT’; did you mean ‘ATOMIC_FLAG_INIT’? [-Wimplicit-function-declaration]
   33 | static atomic_int wait = ATOMIC_VAR_INIT(1);
      |                          ^~~~~~~~~~~~~~~
      |                          ATOMIC_FLAG_INIT
udpclash.c:33:26: error: initializer element is not constant
make[1]: *** [../../lib.mk:222: /home/nipa/net/wt-0/build_tools/kselftest/net/netfilter/udpclash] Error 1
make[1]: *** Waiting for unfinished jobs....
 ====== Building the tree before the patch ======
udpclash.c:33:26: error: implicit declaration of function ‘ATOMIC_VAR_INIT’; did you mean ‘ATOMIC_FLAG_INIT’? [-Wimplicit-function-declaration]
   33 | static atomic_int wait = ATOMIC_VAR_INIT(1);
      |                          ^~~~~~~~~~~~~~~
      |                          ATOMIC_FLAG_INIT
udpclash.c:33:26: error: initializer element is not constant
make[1]: *** [../../lib.mk:222: /home/nipa/net/wt-0/build_tools/kselftest/net/netfilter/udpclash] Error 1
 ====== Checking if tree is clean ======
?? arch/x86/Makefile.orig
?? arch/x86/Makefile.rej
 ====== Building the tree with the patch ======
udpclash.c:33:26: error: implicit declaration of function ‘ATOMIC_VAR_INIT’; did you mean ‘ATOMIC_FLAG_INIT’? [-Wimplicit-function-declaration]
   33 | static atomic_int wait = ATOMIC_VAR_INIT(1);
      |                          ^~~~~~~~~~~~~~~
      |                          ATOMIC_FLAG_INIT
udpclash.c:33:26: error: initializer element is not constant
make[1]: *** [../../lib.mk:222: /home/nipa/net/wt-0/build_tools/kselftest/net/netfilter/udpclash] Error 1
 ====== Checking if tree is clean ======
?? arch/x86/Makefile.orig
?? arch/x86/Makefile.rej