[kkdwivedi:fermata 32/49] include/linux/rcupdate.h:504:9: error: dereferencing pointer to incomplete type 'struct bpf_waitq_kern'

[kkdwivedi:fermata 32/49] include/linux/rcupdate.h:504:9: error: dereferencing pointer to incomplete type 'struct bpf_waitq_kern'

[kernel test robot]

tree:   https://github.com/kkdwivedi/linux fermata
head:   babde5051be3840becf5a78de91a0b68a99f0e49
commit: 43f503501754803751762d06e0ff50980b709ca0 [32/49] net: Let a BPF poller take over NAPI scheduling
config: sparc64-randconfig-2001-20261001 (https://download.01.org/0day-ci/archive/20261002/202610020742.Pz5YYv3f-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261002/202610020742.Pz5YYv3f-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610020742.Pz5YYv3f-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/compiler_types.h:44,
                    from <command-line>:
   net/core/dev.c: In function 'napi_set_threaded':
>> include/linux/rcupdate.h:504:9: error: dereferencing pointer to incomplete type 'struct bpf_waitq_kern'
     typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
            ^
   include/linux/compiler-context-analysis.h:218:2: note: in definition of macro 'context_unsafe'
     __VA_ARGS__;   \
     ^~~~~~~~~~~
   include/linux/rcupdate.h:625:31: note: in expansion of macro '__rcu_access_pointer'
    #define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
                                  ^~~~~~~~~~~~~~~~~~~~
   net/core/dev.c:7266:18: note: in expansion of macro 'rcu_access_pointer'
     if (threaded && rcu_access_pointer(napi->bpf_waitq))
                     ^~~~~~~~~~~~~~~~~~


vim +504 include/linux/rcupdate.h

76c8eaafe4f061 Paul E. McKenney        2021-04-21  501  
573d76f7db5ba0 Paul E. McKenney        2026-06-28  502  #define __rcu_access_pointer(p, local, space) context_unsafe( \
ca5ecddfa8fcbd Paul E. McKenney        2010-04-28  503  ({ \
24ba53017e188e Chun-Hung Tseng         2021-09-15 @504  	typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
423a86a610cad1 Joel Fernandes (Google  2018-12-12  505) 	rcu_check_sparse(p, space); \
24ba53017e188e Chun-Hung Tseng         2021-09-15  506  	((typeof(*p) __force __kernel *)(local)); \
573d76f7db5ba0 Paul E. McKenney        2026-06-28  507  }) )
24ba53017e188e Chun-Hung Tseng         2021-09-15  508  #define __rcu_dereference_check(p, local, c, space) \
ca5ecddfa8fcbd Paul E. McKenney        2010-04-28  509  ({ \
ac59853c06993a Pranith Kumar           2014-11-13  510  	/* Dependency order vs. p above. */ \
24ba53017e188e Chun-Hung Tseng         2021-09-15  511  	typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
f78f5b90c4ffa5 Paul E. McKenney        2015-06-18  512  	RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_check() usage"); \
423a86a610cad1 Joel Fernandes (Google  2018-12-12  513) 	rcu_check_sparse(p, space); \
24ba53017e188e Chun-Hung Tseng         2021-09-15  514  	((typeof(*p) __force __kernel *)(local)); \
ca5ecddfa8fcbd Paul E. McKenney        2010-04-28  515  })
24ba53017e188e Chun-Hung Tseng         2021-09-15  516  #define __rcu_dereference_protected(p, local, c, space) \
ca5ecddfa8fcbd Paul E. McKenney        2010-04-28  517  ({ \
f78f5b90c4ffa5 Paul E. McKenney        2015-06-18  518  	RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_protected() usage"); \
423a86a610cad1 Joel Fernandes (Google  2018-12-12  519) 	rcu_check_sparse(p, space); \
ca5ecddfa8fcbd Paul E. McKenney        2010-04-28  520  	((typeof(*p) __force __kernel *)(p)); \
ca5ecddfa8fcbd Paul E. McKenney        2010-04-28  521  })
24ba53017e188e Chun-Hung Tseng         2021-09-15  522  #define __rcu_dereference_raw(p, local) \
995f1405610bd8 Paul E. McKenney        2016-07-01  523  ({ \
995f1405610bd8 Paul E. McKenney        2016-07-01  524  	/* Dependency order vs. p above. */ \
24ba53017e188e Chun-Hung Tseng         2021-09-15  525  	typeof(p) local = READ_ONCE(p); \
24ba53017e188e Chun-Hung Tseng         2021-09-15  526  	((typeof(*p) __force __kernel *)(local)); \
995f1405610bd8 Paul E. McKenney        2016-07-01  527  })
24ba53017e188e Chun-Hung Tseng         2021-09-15  528  #define rcu_dereference_raw(p) __rcu_dereference_raw(p, __UNIQUE_ID(rcu))
ca5ecddfa8fcbd Paul E. McKenney        2010-04-28  529  

:::::: The code at line 504 was first introduced by commit
:::::: 24ba53017e188e031f9cb8b290286fad52d2af00 rcu: Replace ________p1 and _________p1 with __UNIQUE_ID(rcu)

:::::: TO: Chun-Hung Tseng <henrybear327@gmail.com>
:::::: CC: Paul E. McKenney <paulmck@kernel.org>

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