tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git rtmutex head: 502cfc4cfd2a79c578c3a82fdd4abd920dde4c6f commit: 65a9a52c002e0b86b9f4f79101d649fa732d8f86 [8/20] locking/rtmutex: Remove pointless CONFIG_RT_MUTEXES=n stubs config: arm64-allnoconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git/commit/?id... git remote add tglx-devel https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git git fetch --no-tags tglx-devel rtmutex git checkout 65a9a52c002e0b86b9f4f79101d649fa732d8f86 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from <command-line>: kernel/rcu/../locking/rtmutex_common.h: In function 'task_has_pi_waiters': 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~ include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert' 300 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~ include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type' 49 | compiletime_assert_rwonce_type(x); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rbtree.h:40:31: note: in expansion of macro 'READ_ONCE' 40 | #define RB_EMPTY_ROOT(root) (READ_ONCE((root)->rb_node) == NULL) | ^~~~~~~~~ kernel/rcu/../locking/rtmutex_common.h:58:10: note: in expansion of macro 'RB_EMPTY_ROOT' 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~~~~~~~~~~~~ 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~ include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert' 300 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~ include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type' 49 | compiletime_assert_rwonce_type(x); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rbtree.h:40:31: note: in expansion of macro 'READ_ONCE' 40 | #define RB_EMPTY_ROOT(root) (READ_ONCE((root)->rb_node) == NULL) | ^~~~~~~~~ kernel/rcu/../locking/rtmutex_common.h:58:10: note: in expansion of macro 'RB_EMPTY_ROOT' 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~~~~~~~~~~~~ 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~ include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert' 300 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~ include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type' 49 | compiletime_assert_rwonce_type(x); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rbtree.h:40:31: note: in expansion of macro 'READ_ONCE' 40 | #define RB_EMPTY_ROOT(root) (READ_ONCE((root)->rb_node) == NULL) | ^~~~~~~~~ kernel/rcu/../locking/rtmutex_common.h:58:10: note: in expansion of macro 'RB_EMPTY_ROOT' 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~~~~~~~~~~~~ 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~ include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert' 300 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~ include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type' 49 | compiletime_assert_rwonce_type(x); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rbtree.h:40:31: note: in expansion of macro 'READ_ONCE' 40 | #define RB_EMPTY_ROOT(root) (READ_ONCE((root)->rb_node) == NULL) | ^~~~~~~~~ kernel/rcu/../locking/rtmutex_common.h:58:10: note: in expansion of macro 'RB_EMPTY_ROOT' 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~~~~~~~~~~~~ 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~ include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert' 300 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert' 36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ | ^~~~~~~~~~~~~~~~~~ include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type' 49 | compiletime_assert_rwonce_type(x); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rbtree.h:40:31: note: in expansion of macro 'READ_ONCE' 40 | #define RB_EMPTY_ROOT(root) (READ_ONCE((root)->rb_node) == NULL) | ^~~~~~~~~ kernel/rcu/../locking/rtmutex_common.h:58:10: note: in expansion of macro 'RB_EMPTY_ROOT' 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~~~~~~~~~~~~ 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~ include/linux/compiler_types.h:271:13: note: in definition of macro '__unqual_scalar_typeof' 271 | _Generic((x), \ | ^ include/asm-generic/rwonce.h:50:2: note: in expansion of macro '__READ_ONCE' 50 | __READ_ONCE(x); \ | ^~~~~~~~~~~ include/linux/rbtree.h:40:31: note: in expansion of macro 'READ_ONCE' 40 | #define RB_EMPTY_ROOT(root) (READ_ONCE((root)->rb_node) == NULL) | ^~~~~~~~~ kernel/rcu/../locking/rtmutex_common.h:58:10: note: in expansion of macro 'RB_EMPTY_ROOT' 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~~~~~~~~~~~~ In file included from arch/arm64/include/asm/rwonce.h:71, from include/linux/compiler.h:248, from include/linux/export.h:43, from include/linux/linkage.h:7, from include/linux/kernel.h:7, from kernel/rcu/tree.c:21: 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~ include/asm-generic/rwonce.h:44:72: note: in definition of macro '__READ_ONCE' 44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x)) | ^ include/linux/rbtree.h:40:31: note: in expansion of macro 'READ_ONCE' 40 | #define RB_EMPTY_ROOT(root) (READ_ONCE((root)->rb_node) == NULL) | ^~~~~~~~~ kernel/rcu/../locking/rtmutex_common.h:58:10: note: in expansion of macro 'RB_EMPTY_ROOT' 58 | return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); | ^~~~~~~~~~~~~ In file included from kernel/rcu/tree.c:21: kernel/rcu/../locking/rtmutex_common.h: In function 'task_top_pi_waiter': kernel/rcu/../locking/rtmutex_common.h:63:19: error: 'struct task_struct' has no member named 'pi_waiters' 63 | return rb_entry(p->pi_waiters.rb_leftmost, struct rt_mutex_waiter, | ^~ include/linux/kernel.h:708:26: note: in definition of macro 'container_of' 708 | void *__mptr = (void *)(ptr); \ | ^~~ kernel/rcu/../locking/rtmutex_common.h:63:9: note: in expansion of macro 'rb_entry' 63 | return rb_entry(p->pi_waiters.rb_leftmost, struct rt_mutex_waiter, | ^~~~~~~~ In file included from <command-line>: kernel/rcu/../locking/rtmutex_common.h:63:19: error: 'struct task_struct' has no member named 'pi_waiters' 63 | return rb_entry(p->pi_waiters.rb_leftmost, struct rt_mutex_waiter, | ^~ include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert' 300 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ include/linux/kernel.h:709:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 709 | BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ | ^~~~~~~~~~~~~~~~ include/linux/kernel.h:709:20: note: in expansion of macro '__same_type' 709 | BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ | ^~~~~~~~~~~ include/linux/rbtree.h:38:37: note: in expansion of macro 'container_of' 38 | #define rb_entry(ptr, type, member) container_of(ptr, type, member) | ^~~~~~~~~~~~ kernel/rcu/../locking/rtmutex_common.h:63:9: note: in expansion of macro 'rb_entry' 63 | return rb_entry(p->pi_waiters.rb_leftmost, struct rt_mutex_waiter, | ^~~~~~~~ kernel/rcu/../locking/rtmutex_common.h:63:19: error: 'struct task_struct' has no member named 'pi_waiters' 63 | return rb_entry(p->pi_waiters.rb_leftmost, struct rt_mutex_waiter, | ^~ include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert' 300 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert' 320 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ include/linux/kernel.h:709:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 709 | BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ | ^~~~~~~~~~~~~~~~ include/linux/kernel.h:710:6: note: in expansion of macro '__same_type' 710 | !__same_type(*(ptr), void), \ | ^~~~~~~~~~~ include/linux/rbtree.h:38:37: note: in expansion of macro 'container_of' 38 | #define rb_entry(ptr, type, member) container_of(ptr, type, member) | ^~~~~~~~~~~~ kernel/rcu/../locking/rtmutex_common.h:63:9: note: in expansion of macro 'rb_entry' 63 | return rb_entry(p->pi_waiters.rb_leftmost, struct rt_mutex_waiter, | ^~~~~~~~ vim +58 kernel/rcu/../locking/rtmutex_common.h 23f78d4a03c53c kernel/rtmutex_common.h Ingo Molnar 2006-06-27 55 23f78d4a03c53c kernel/rtmutex_common.h Ingo Molnar 2006-06-27 56 static inline int task_has_pi_waiters(struct task_struct *p) 23f78d4a03c53c kernel/rtmutex_common.h Ingo Molnar 2006-06-27 57 { a23ba907d5e65d kernel/locking/rtmutex_common.h Davidlohr Bueso 2017-09-08 @58 return !RB_EMPTY_ROOT(&p->pi_waiters.rb_root); 23f78d4a03c53c kernel/rtmutex_common.h Ingo Molnar 2006-06-27 59 } 23f78d4a03c53c kernel/rtmutex_common.h Ingo Molnar 2006-06-27 60 :::::: The code at line 58 was first introduced by commit :::::: a23ba907d5e65d6aeea3e59c82fda9cd206a7aad locking/rtmutex: replace top-waiter and pi_waiters leftmost caching :::::: TO: Davidlohr Bueso <dave(a)stgolabs.net&gt; :::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org