[mingo-tip:sched/headers 562/2380] include/linux/sched/thread_info_api.h:11:28: error: field 'task' has incomplete type

From: kernel test robot
Date: Sun Jan 09 2022 - 18:34:06 EST

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tree: git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers
head: 351bfbf7f1e8dce84b605c8007c98dd603c4ca4d
commit: 3c27370c77da679d6be2c53c933877befbe10eb4 [562/2380] headers/deps: Move task->thread_info to per_task()
config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20220110/202201100729.ZMzCwe0F-lkp@xxxxxxxxx/config)
compiler: sparc64-linux-gcc (GCC) 11.2.0
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/mingo/tip.git/commit/?id=3c27370c77da679d6be2c53c933877befbe10eb4
git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
git fetch --no-tags mingo-tip sched/headers
git checkout 3c27370c77da679d6be2c53c933877befbe10eb4
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=sparc prepare

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

Note: the mingo-tip/sched/headers HEAD 351bfbf7f1e8dce84b605c8007c98dd603c4ca4d builds fine.
It only hurts bisectability.

All errors (new ones prefixed by >>):

In file included from include/asm-generic/preempt.h:5,
from ./arch/sparc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:78,
from include/linux/smp.h:110,
from include/linux/lockdep.h:23,
from include/linux/sched.h:32,
from arch/sparc/kernel/../../../kernel/sched/per_task_area_struct.h:7,
from arch/sparc/kernel/asm-offsets.c:14:
>> include/linux/sched/thread_info_api.h:11:28: error: field 'task' has incomplete type
11 | struct task_struct task;
| ^~~~
In file included from include/linux/sched.h:12,
from arch/sparc/kernel/../../../kernel/sched/per_task_area_struct.h:7,
from arch/sparc/kernel/asm-offsets.c:14:
include/linux/sched/thread_info_api.h: In function 'set_tsk_thread_flag':
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:49:28: note: in expansion of macro 'task_thread_info'
49 | set_ti_thread_flag(task_thread_info(tsk), flag);
| ^~~~~~~~~~~~~~~~
include/linux/sched/thread_info_api.h: In function 'clear_tsk_thread_flag':
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:54:30: note: in expansion of macro 'task_thread_info'
54 | clear_ti_thread_flag(task_thread_info(tsk), flag);
| ^~~~~~~~~~~~~~~~
include/linux/sched/thread_info_api.h: In function 'update_tsk_thread_flag':
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:60:31: note: in expansion of macro 'task_thread_info'
60 | update_ti_thread_flag(task_thread_info(tsk), flag, value);
| ^~~~~~~~~~~~~~~~
include/linux/sched/thread_info_api.h: In function 'test_and_set_tsk_thread_flag':
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:65:44: note: in expansion of macro 'task_thread_info'
65 | return test_and_set_ti_thread_flag(task_thread_info(tsk), flag);
| ^~~~~~~~~~~~~~~~
include/linux/sched/thread_info_api.h: In function 'test_and_clear_tsk_thread_flag':
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:70:46: note: in expansion of macro 'task_thread_info'
70 | return test_and_clear_ti_thread_flag(task_thread_info(tsk), flag);
| ^~~~~~~~~~~~~~~~
include/linux/sched/thread_info_api.h: In function 'test_tsk_thread_flag':
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:75:36: note: in expansion of macro 'task_thread_info'
75 | return test_ti_thread_flag(task_thread_info(tsk), flag);
| ^~~~~~~~~~~~~~~~
In file included from <command-line>:
include/linux/sched/thread_info_api.h: In function 'task_cpu':
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'const struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/linux/compiler_types.h:315:23: note: in definition of macro '__compiletime_assert'
315 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler_types.h:335:9: note: in expansion of macro '_compiletime_assert'
335 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/sched/thread_info_api.h:100:16: note: in expansion of macro 'READ_ONCE'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:100:26: note: in expansion of macro 'task_thread_info'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~~~~~~~~
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'const struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/linux/compiler_types.h:315:23: note: in definition of macro '__compiletime_assert'
315 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler_types.h:335:9: note: in expansion of macro '_compiletime_assert'
335 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/sched/thread_info_api.h:100:16: note: in expansion of macro 'READ_ONCE'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:100:26: note: in expansion of macro 'task_thread_info'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~~~~~~~~
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'const struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/linux/compiler_types.h:315:23: note: in definition of macro '__compiletime_assert'
315 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler_types.h:335:9: note: in expansion of macro '_compiletime_assert'
335 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/sched/thread_info_api.h:100:16: note: in expansion of macro 'READ_ONCE'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:100:26: note: in expansion of macro 'task_thread_info'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~~~~~~~~
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'const struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/linux/compiler_types.h:315:23: note: in definition of macro '__compiletime_assert'
315 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler_types.h:335:9: note: in expansion of macro '_compiletime_assert'
335 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/sched/thread_info_api.h:100:16: note: in expansion of macro 'READ_ONCE'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:100:26: note: in expansion of macro 'task_thread_info'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~~~~~~~~
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'const struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/linux/compiler_types.h:315:23: note: in definition of macro '__compiletime_assert'
315 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler_types.h:335:9: note: in expansion of macro '_compiletime_assert'
335 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/sched/thread_info_api.h:100:16: note: in expansion of macro 'READ_ONCE'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:100:26: note: in expansion of macro 'task_thread_info'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~~~~~~~~
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'const struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/linux/compiler_types.h:291:27: note: in definition of macro '__unqual_scalar_typeof'
291 | _Generic((x), \
| ^
include/asm-generic/rwonce.h:50:9: note: in expansion of macro '__READ_ONCE'
50 | __READ_ONCE(x); \
| ^~~~~~~~~~~
include/linux/sched/thread_info_api.h:100:16: note: in expansion of macro 'READ_ONCE'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:100:26: note: in expansion of macro 'task_thread_info'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~~~~~~~~
In file included from ./arch/sparc/include/generated/asm/rwonce.h:1,
from include/linux/compiler.h:266,
from include/linux/sched/per_task.h:41,
from include/linux/sched.h:12,
from arch/sparc/kernel/../../../kernel/sched/per_task_area_struct.h:7,
from arch/sparc/kernel/asm-offsets.c:14:
>> include/linux/sched/per_task.h:60:91: error: invalid use of undefined type 'const struct task_struct'
60 | #define per_task(task, name) (*((__typeof__(per_task__##name) *)((task)->per_task_area + per_task_offset(name))))
| ^~
include/asm-generic/rwonce.h:44:73: note: in definition of macro '__READ_ONCE'
44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
| ^
include/linux/sched/thread_info_api.h:100:16: note: in expansion of macro 'READ_ONCE'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~
include/linux/sched/thread_info_api.h:31:56: note: in expansion of macro 'per_task'
31 | # define task_thread_info(task) ((struct thread_info *)per_task(task, stack))
| ^~~~~~~~
include/linux/sched/thread_info_api.h:100:26: note: in expansion of macro 'task_thread_info'
100 | return READ_ONCE(task_thread_info(p)->cpu);
| ^~~~~~~~~~~~~~~~
In file included from arch/sparc/kernel/asm-offsets.c:23:
arch/sparc/kernel/../../../kernel/sched/per_task_area_struct_defs.h: At top level:
arch/sparc/kernel/../../../kernel/sched/per_task_area_struct_defs.h:13:13: warning: no previous prototype for 'per_task_common' [-Wmissing-prototypes]
13 | void __used per_task_common(void)
| ^~~~~~~~~~~~~~~
arch/sparc/kernel/asm-offsets.c:36:5: warning: no previous prototype for 'sparc64_foo' [-Wmissing-prototypes]
36 | int sparc64_foo(void)
| ^~~~~~~~~~~
arch/sparc/kernel/asm-offsets.c:55:5: warning: no previous prototype for 'foo' [-Wmissing-prototypes]
55 | int foo(void)
| ^~~
make[2]: *** [scripts/Makefile.build:121: arch/sparc/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1197: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:219: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.

vim +/task +11 include/linux/sched/thread_info_api.h

8
9 union thread_union {
10 #ifndef CONFIG_ARCH_TASK_STRUCT_ON_STACK
> 11 struct task_struct task;
12 #endif
13 #ifndef CONFIG_THREAD_INFO_IN_TASK
14 struct thread_info thread_info;
15 #endif
16 unsigned long stack[THREAD_SIZE/sizeof(long)];
17 };
18

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Next message: Dario Petrillo: "[PATCH] perf tui: avoid crash when annotating recursive functions"
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