linux-mm.kvack.org archive mirror
 help / color / mirror / Atom feed
* [linux-next:master 10788/11220] include/linux/rcupdate.h:555:36: error: dereferencing pointer to incomplete type 'struct maple_enode'
@ 2026-02-02 18:30 kernel test robot
  2026-02-02 20:39 ` Liam R. Howlett
  0 siblings, 1 reply; 2+ messages in thread
From: kernel test robot @ 2026-02-02 18:30 UTC (permalink / raw)
  To: Liam R. Howlett
  Cc: oe-kbuild-all, Andrew Morton, Linux Memory Management List

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   193579fe01389bc21aff0051d13f24e8ea95b47d
commit: 60d8a8eb080e2f6927add49f47625574b39d3072 [10788/11220] maple_tree: add cp_is_new_root() helper
config: parisc-randconfig-002-20260202 (https://download.01.org/0day-ci/archive/20260203/202602030233.gZQAuAMc-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260203/202602030233.gZQAuAMc-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/202602030233.gZQAuAMc-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from ./arch/parisc/include/generated/asm/rwonce.h:1,
                    from include/linux/compiler.h:380,
                    from include/linux/array_size.h:5,
                    from include/linux/kernel.h:16,
                    from include/linux/maple_tree.h:11,
                    from lib/maple_tree.c:56:
   lib/maple_tree.c: In function 'cp_is_new_root':
>> include/linux/rcupdate.h:555:36: error: dereferencing pointer to incomplete type 'struct maple_enode'
    #define RCU_INITIALIZER(v) (typeof(*(v)) __force __rcu *)(v)
                                       ^~~~
   include/asm-generic/rwonce.h:55:33: note: in definition of macro '__WRITE_ONCE'
     *(volatile typeof(x) *)&(x) = (val);    \
                                    ^~~
   include/linux/rcupdate.h:1046:3: note: in expansion of macro 'WRITE_ONCE'
      WRITE_ONCE(p, RCU_INITIALIZER(v)); \
      ^~~~~~~~~~
   include/linux/rcupdate.h:1046:17: note: in expansion of macro 'RCU_INITIALIZER'
      WRITE_ONCE(p, RCU_INITIALIZER(v)); \
                    ^~~~~~~~~~~~~~~
   lib/maple_tree.c:3364:3: note: in expansion of macro 'RCU_INIT_POINTER'
      RCU_INIT_POINTER(cp->slot[0], mt_mk_node(cp->dst[0].node, mt));
      ^~~~~~~~~~~~~~~~


vim +555 include/linux/rcupdate.h

ca5ecddfa8fcbd Paul E. McKenney 2010-04-28  550  
462225ae47d717 Paul E. McKenney 2013-11-11  551  /**
462225ae47d717 Paul E. McKenney 2013-11-11  552   * RCU_INITIALIZER() - statically initialize an RCU-protected global variable
462225ae47d717 Paul E. McKenney 2013-11-11  553   * @v: The value to statically initialize with.
462225ae47d717 Paul E. McKenney 2013-11-11  554   */
462225ae47d717 Paul E. McKenney 2013-11-11 @555  #define RCU_INITIALIZER(v) (typeof(*(v)) __force __rcu *)(v)
462225ae47d717 Paul E. McKenney 2013-11-11  556  

:::::: The code at line 555 was first introduced by commit
:::::: 462225ae47d7175f886281d8a91708550cd5178c rcu: Add an RCU_INITIALIZER for global RCU-protected pointers

:::::: TO: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
:::::: CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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


^ permalink raw reply	[flat|nested] 2+ messages in thread
end of thread, other threads:[~2026-02-02 20:39 UTC | newest]

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2026-02-02 18:30 [linux-next:master 10788/11220] include/linux/rcupdate.h:555:36: error: dereferencing pointer to incomplete type 'struct maple_enode' kernel test robot
2026-02-02 20:39 ` Liam R. Howlett

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox