htmldocs: Documentation/bpf/graph_ds_impl.rst:62: WARNING: Error in "code-block" directive:

tree:   https://github.com/ammarfaizi2/linux-block bpf/bpf-next/master
head:   1f5dfcc78ab4cc06ce7dac9de6c1ed361fde7119
commit: c31315c3aa09297d99cb39e837185ef225586d2b [9/13] bpf, documentation: Add graph documentation for non-owning refs
reproduce:
        # https://github.com/ammarfaizi2/linux-block/commit/c31315c3aa09297d99cb39e837185ef225586d2b
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block bpf/bpf-next/master
        git checkout c31315c3aa09297d99cb39e837185ef225586d2b
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        make htmldocs

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email protected]>
| Link: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

>> Documentation/bpf/graph_ds_impl.rst:62: WARNING: Error in "code-block" directive:

vim +62 Documentation/bpf/graph_ds_impl.rst

    61	
  > 62	.. code-block:: c
    63	        struct node_data {
    64	          long key;
    65	          long data;
    66	          struct bpf_rb_node node;
    67	        };
    68	
    69	        struct bpf_spin_lock glock;
    70	        struct bpf_rb_root groot __contains(node_data, node);
    71	

0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests