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Howlett" To: kernel test robot Cc: oe-kbuild-all@lists.linux.dev, Andrew Morton , Linux Memory Management List Subject: Re: [linux-next:master 10788/11220] include/linux/rcupdate.h:555:36: error: dereferencing pointer to incomplete type 'struct maple_enode' Message-ID: Mail-Followup-To: "Liam R. 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Ena1nJc4kyxTHq0K56RmJbMf3D2duV2cSIy/+Tb7Krk7E/d1XgsvjP7vE6kRp+y3wg8jl2hgc0BxQMO4apPghfqzyQZZXQRAcClihlUstfNSIYSP5Rq4sNrZSuQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: * kernel test robot [260202 13:31]: > 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) Thanks, as predicted by SK. I will have to build the kernel with a lot more gcc versions, I guess. > > 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 > | 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 > :::::: CC: Paul E. McKenney > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki