tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tmp.tmp2 head: adcceb5eb7aee38e4a9c15bdf599655f0e1b1324 commit: 6528e8a95a1c2683f8a4c93b4a945175f89fdc3d [50/364] sched/headers, sched/rt: Move task_struct::rt to per_task(), finish config: x86_64-rhel-8.3 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=6528e8a95a1c2683f8a4c93b4a945175f89fdc3d git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git git fetch --no-tags tip tmp.tmp2 git checkout 6528e8a95a1c2683f8a4c93b4a945175f89fdc3d # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): In file included from : kernel/sched/rt.c: In function 'rt_task_of': >> include/linux/kernel.h:706:51: error: 'struct task_struct' has no member named 'rt' 706 | BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ | ^~ include/linux/compiler_types.h:308:9: note: in definition of macro '__compiletime_assert' 308 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler_types.h:328:2: note: in expansion of macro '_compiletime_assert' 328 | _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:706:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 706 | BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ | ^~~~~~~~~~~~~~~~ include/linux/kernel.h:706:20: note: in expansion of macro '__same_type' 706 | BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ | ^~~~~~~~~~~ kernel/sched/rt.c:121:9: note: in expansion of macro 'container_of' 121 | return container_of(rt_se, struct task_struct, rt); | ^~~~~~~~~~~~ >> include/linux/compiler_types.h:140:35: error: 'struct task_struct' has no member named 'rt' 140 | #define __compiler_offsetof(a, b) __builtin_offsetof(a, b) | ^~~~~~~~~~~~~~~~~~ include/linux/stddef.h:17:32: note: in expansion of macro '__compiler_offsetof' 17 | #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER) | ^~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:709:21: note: in expansion of macro 'offsetof' 709 | ((type *)(__mptr - offsetof(type, member))); }) | ^~~~~~~~ kernel/sched/rt.c:121:9: note: in expansion of macro 'container_of' 121 | return container_of(rt_se, struct task_struct, rt); | ^~~~~~~~~~~~ kernel/sched/rt.c: At top level: kernel/sched/rt.c:670:6: warning: no previous prototype for 'sched_rt_bandwidth_account' [-Wmissing-prototypes] 670 | bool sched_rt_bandwidth_account(struct rt_rq *rt_rq) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/rt.c: In function 'rt_task_of': kernel/sched/rt.c:122:1: error: control reaches end of non-void function [-Werror=return-type] 122 | } | ^ cc1: some warnings being treated as errors vim +706 include/linux/kernel.h cf14f27f82af78 Alexei Starovoitov 2018-03-28 696 ^1da177e4c3f41 Linus Torvalds 2005-04-16 697 /** ^1da177e4c3f41 Linus Torvalds 2005-04-16 698 * container_of - cast a member of a structure out to the containing structure ^1da177e4c3f41 Linus Torvalds 2005-04-16 699 * @ptr: the pointer to the member. ^1da177e4c3f41 Linus Torvalds 2005-04-16 700 * @type: the type of the container struct this is embedded in. ^1da177e4c3f41 Linus Torvalds 2005-04-16 701 * @member: the name of the member within the struct. ^1da177e4c3f41 Linus Torvalds 2005-04-16 702 * ^1da177e4c3f41 Linus Torvalds 2005-04-16 703 */ ^1da177e4c3f41 Linus Torvalds 2005-04-16 704 #define container_of(ptr, type, member) ({ \ c7acec713d14c6 Ian Abbott 2017-07-12 705 void *__mptr = (void *)(ptr); \ c7acec713d14c6 Ian Abbott 2017-07-12 @706 BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ c7acec713d14c6 Ian Abbott 2017-07-12 707 !__same_type(*(ptr), void), \ c7acec713d14c6 Ian Abbott 2017-07-12 708 "pointer type mismatch in container_of()"); \ c7acec713d14c6 Ian Abbott 2017-07-12 709 ((type *)(__mptr - offsetof(type, member))); }) ^1da177e4c3f41 Linus Torvalds 2005-04-16 710 :::::: The code at line 706 was first introduced by commit :::::: c7acec713d14c6ce8a20154f9dfda258d6bcad3b kernel.h: handle pointers to arrays better in container_of() :::::: TO: Ian Abbott :::::: CC: Linus Torvalds --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org