[kbuild-all] [tip:tmp.tmp2 241/364] arch/x86/include/asm/uaccess.h:477:16: error: implicit declaration of function 'in_task'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tmp.tmp2 head: adcceb5eb7aee38e4a9c15bdf599655f0e1b1324 commit: 5bef49c748201f780b3b15803bb38885eb52480b [241/364] sched/headers, mm: Simplify <linux/swap.h> dependencies config: x86_64-randconfig-a015-20210613 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project d2012d965d60c3258b3a69d024491698f8aec386) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=5b... 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 5bef49c748201f780b3b15803bb38885eb52480b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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 kernel/locking/rwsem.c:20: include/linux/sched.h:459:26: error: field has incomplete type 'struct irqtrace_events' struct irqtrace_events irqtrace; ^ include/linux/sched.h:459:9: note: forward declaration of 'struct irqtrace_events' struct irqtrace_events irqtrace; ^ include/linux/sched.h:475:30: error: array has incomplete element type 'struct held_lock' struct held_lock held_locks[MAX_LOCK_DEPTH]; ^ include/linux/sched.h:475:9: note: forward declaration of 'struct held_lock' struct held_lock held_locks[MAX_LOCK_DEPTH]; ^ In file included from kernel/locking/rwsem.c:22: In file included from include/linux/sched/task.h:11: In file included from include/linux/uaccess.h:11: if (unlikely(!access_ok(ptr,len))) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ arch/x86/include/asm/uaccess.h:477:16: note: did you mean 'rt_task'? arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ include/linux/sched/rt.h:16:19: note: 'rt_task' declared here static inline int rt_task(struct task_struct *p) ^ In file included from kernel/locking/rwsem.c:22: In file included from include/linux/sched/task.h:11: In file included from include/linux/uaccess.h:11: if (unlikely(!access_ok(ptr,len))) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ In file included from kernel/locking/rwsem.c:22: In file included from include/linux/sched/task.h:11: if (access_ok(to, n) && access_ok(from, n)) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ In file included from kernel/locking/rwsem.c:22: In file included from include/linux/sched/task.h:11: include/linux/uaccess.h:208:26: error: implicit declaration of function 'in_task' [-Werror,-Wimplicit-function-declaration] if (access_ok(to, n) && access_ok(from, n)) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ 6 errors generated. -- In file included from kernel/locking/lockdep.c:33: In file included from include/linux/sched/task.h:11: In file included from include/linux/uaccess.h:11: if (unlikely(!access_ok(ptr,len))) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ In file included from kernel/locking/lockdep.c:33: In file included from include/linux/sched/task.h:11: if (access_ok(to, n) && access_ok(from, n)) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ In file included from kernel/locking/lockdep.c:33: In file included from include/linux/sched/task.h:11: include/linux/uaccess.h:208:26: error: implicit declaration of function 'in_task' [-Werror,-Wimplicit-function-declaration] if (access_ok(to, n) && access_ok(from, n)) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ In file included from kernel/locking/lockdep.c:64: In file included from include/trace/events/lock.h:87: In file included from include/trace/define_trace.h:102: In file included from include/trace/trace_events.h:21: In file included from include/linux/trace_events.h:10: In file included from include/linux/perf_event.h:57: include/linux/cgroup.h:481:9: error: no member named 'flags' in 'struct task_struct' return task_css_set_check(task, false); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cgroup.h:455:12: note: expanded from macro 'task_css_set_check' ((task)->flags & PF_EXITING) || (__c)) ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:510:32: note: expanded from macro 'rcu_dereference_check' __rcu_dereference_check((p), (c) || rcu_read_lock_held(), __rcu) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:372:21: note: expanded from macro '__rcu_dereference_check' RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_check() usage"); \ ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:314:52: note: expanded from macro 'RCU_LOCKDEP_WARN' if (debug_lockdep_rcu_enabled() && !__warned && (c)) { \ ^ In file included from kernel/locking/lockdep.c:64: In file included from include/trace/events/lock.h:87: In file included from include/trace/define_trace.h:102: In file included from include/trace/trace_events.h:21: In file included from include/linux/trace_events.h:10: In file included from include/linux/perf_event.h:57: include/linux/cgroup.h:494:9: error: no member named 'flags' in 'struct task_struct' return task_css_check(task, subsys_id, false); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cgroup.h:471:2: note: expanded from macro 'task_css_check' task_css_set_check((task), (__c))->subsys[(subsys_id)] ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cgroup.h:455:12: note: expanded from macro 'task_css_set_check' ((task)->flags & PF_EXITING) || (__c)) ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:510:32: note: expanded from macro 'rcu_dereference_check' __rcu_dereference_check((p), (c) || rcu_read_lock_held(), __rcu) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:372:21: note: expanded from macro '__rcu_dereference_check' RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_check() usage"); \ ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:314:52: note: expanded from macro 'RCU_LOCKDEP_WARN' if (debug_lockdep_rcu_enabled() && !__warned && (c)) { \ ^ In file included from kernel/locking/lockdep.c:64: In file included from include/trace/events/lock.h:87: In file included from include/trace/define_trace.h:102: In file included from include/trace/trace_events.h:21: In file included from include/linux/trace_events.h:10: In file included from include/linux/perf_event.h:57: include/linux/cgroup.h:538:9: error: no member named 'flags' in 'struct task_struct' return task_css_check(task, subsys_id, true) == ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cgroup.h:471:2: note: expanded from macro 'task_css_check' task_css_set_check((task), (__c))->subsys[(subsys_id)] ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cgroup.h:455:12: note: expanded from macro 'task_css_set_check' ((task)->flags & PF_EXITING) || (__c)) ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:510:32: note: expanded from macro 'rcu_dereference_check' __rcu_dereference_check((p), (c) || rcu_read_lock_held(), __rcu) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:372:21: note: expanded from macro '__rcu_dereference_check' RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_check() usage"); \ ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:314:52: note: expanded from macro 'RCU_LOCKDEP_WARN' if (debug_lockdep_rcu_enabled() && !__warned && (c)) { \ ^ In file included from kernel/locking/lockdep.c:64: In file included from include/trace/events/lock.h:87: In file included from include/trace/define_trace.h:102: In file included from include/trace/trace_events.h:21: In file included from include/linux/trace_events.h:10: include/linux/perf_event.h:943:22: error: no member named 'flags' in 'struct task_struct' return container_of(task_css_check(task, perf_event_cgrp_id, ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cgroup.h:471:2: note: expanded from macro 'task_css_check' task_css_set_check((task), (__c))->subsys[(subsys_id)] ^ include/linux/cgroup.h:455:12: note: expanded from macro 'task_css_set_check' -- In file included from mm/kasan/common.c:14: In file included from include/linux/kasan.h:28: In file included from include/linux/pgtable.h:6: In file included from arch/x86/include/asm/pgtable.h:26: In file included from arch/x86/include/asm/fpu/xstate.h:5: In file included from include/linux/uaccess.h:11: if (unlikely(!access_ok(ptr,len))) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ In file included from mm/kasan/common.c:14: In file included from include/linux/kasan.h:28: In file included from include/linux/pgtable.h:6: In file included from arch/x86/include/asm/pgtable.h:26: In file included from arch/x86/include/asm/fpu/xstate.h:5: if (access_ok(to, n) && access_ok(from, n)) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ In file included from mm/kasan/common.c:14: In file included from include/linux/kasan.h:28: In file included from include/linux/pgtable.h:6: In file included from arch/x86/include/asm/pgtable.h:26: In file included from arch/x86/include/asm/fpu/xstate.h:5: include/linux/uaccess.h:208:26: error: implicit declaration of function 'in_task' [-Werror,-Wimplicit-function-declaration] if (access_ok(to, n) && access_ok(from, n)) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ In file included from mm/kasan/common.c:31: In file included from mm/kasan/../slab.h:43: In file included from include/linux/memcontrol.h:22: In file included from include/linux/writeback.h:14: In file included from include/linux/blk-cgroup.h:17: include/linux/cgroup.h:481:9: error: no member named 'flags' in 'struct task_struct' return task_css_set_check(task, false); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cgroup.h:455:12: note: expanded from macro 'task_css_set_check' ((task)->flags & PF_EXITING) || (__c)) ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:510:32: note: expanded from macro 'rcu_dereference_check' __rcu_dereference_check((p), (c) || rcu_read_lock_held(), __rcu) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:372:21: note: expanded from macro '__rcu_dereference_check' RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_check() usage"); \ ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:314:52: note: expanded from macro 'RCU_LOCKDEP_WARN' if (debug_lockdep_rcu_enabled() && !__warned && (c)) { \ ^ In file included from mm/kasan/common.c:31: In file included from mm/kasan/../slab.h:43: In file included from include/linux/memcontrol.h:22: In file included from include/linux/writeback.h:14: In file included from include/linux/blk-cgroup.h:17: include/linux/cgroup.h:494:9: error: no member named 'flags' in 'struct task_struct' return task_css_check(task, subsys_id, false); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cgroup.h:471:2: note: expanded from macro 'task_css_check' task_css_set_check((task), (__c))->subsys[(subsys_id)] ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cgroup.h:455:12: note: expanded from macro 'task_css_set_check' ((task)->flags & PF_EXITING) || (__c)) ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:510:32: note: expanded from macro 'rcu_dereference_check' __rcu_dereference_check((p), (c) || rcu_read_lock_held(), __rcu) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:372:21: note: expanded from macro '__rcu_dereference_check' RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_check() usage"); \ ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:314:52: note: expanded from macro 'RCU_LOCKDEP_WARN' if (debug_lockdep_rcu_enabled() && !__warned && (c)) { \ ^ In file included from mm/kasan/common.c:31: In file included from mm/kasan/../slab.h:43: In file included from include/linux/memcontrol.h:22: In file included from include/linux/writeback.h:14: In file included from include/linux/blk-cgroup.h:17: include/linux/cgroup.h:538:9: error: no member named 'flags' in 'struct task_struct' return task_css_check(task, subsys_id, true) == ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cgroup.h:471:2: note: expanded from macro 'task_css_check' task_css_set_check((task), (__c))->subsys[(subsys_id)] ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/cgroup.h:455:12: note: expanded from macro 'task_css_set_check' ((task)->flags & PF_EXITING) || (__c)) ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:510:32: note: expanded from macro 'rcu_dereference_check' __rcu_dereference_check((p), (c) || rcu_read_lock_held(), __rcu) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:372:21: note: expanded from macro '__rcu_dereference_check' RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_check() usage"); \ ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/rcupdate.h:314:52: note: expanded from macro 'RCU_LOCKDEP_WARN' if (debug_lockdep_rcu_enabled() && !__warned && (c)) { \ ^ 6 errors generated. -- In file included from mm/kasan/shadow.c:14: In file included from include/linux/kasan.h:28: In file included from include/linux/pgtable.h:6: In file included from arch/x86/include/asm/pgtable.h:26: In file included from arch/x86/include/asm/fpu/xstate.h:5: In file included from include/linux/uaccess.h:11: if (unlikely(!access_ok(ptr,len))) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ In file included from mm/kasan/shadow.c:14: In file included from include/linux/kasan.h:28: In file included from include/linux/pgtable.h:6: In file included from arch/x86/include/asm/pgtable.h:26: In file included from arch/x86/include/asm/fpu/xstate.h:5: if (access_ok(to, n) && access_ok(from, n)) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ In file included from mm/kasan/shadow.c:14: In file included from include/linux/kasan.h:28: In file included from include/linux/pgtable.h:6: In file included from arch/x86/include/asm/pgtable.h:26: In file included from arch/x86/include/asm/fpu/xstate.h:5: include/linux/uaccess.h:208:26: error: implicit declaration of function 'in_task' [-Werror,-Wimplicit-function-declaration] if (access_ok(to, n) && access_ok(from, n)) ^ arch/x86/include/asm/uaccess.h:72:2: note: expanded from macro 'access_ok' WARN_ON_IN_IRQ(); \ ^ arch/x86/include/asm/uaccess.h:48:16: note: expanded from macro 'WARN_ON_IN_IRQ' WARN_ON_ONCE(!in_task() && !pagefault_disabled()) ^ 3 errors generated. .. vim +/in_task +477 arch/x86/include/asm/uaccess.h ca23386216b9d4 include/asm-x86/uaccess.h Glauber Costa 2008-06-13 468 5b24a7a2aa2040 arch/x86/include/asm/uaccess.h Linus Torvalds 2015-12-17 469 /* 5b24a7a2aa2040 arch/x86/include/asm/uaccess.h Linus Torvalds 2015-12-17 470 * The "unsafe" user accesses aren't really "unsafe", but the naming 5b24a7a2aa2040 arch/x86/include/asm/uaccess.h Linus Torvalds 2015-12-17 471 * is a big fat warning: you have to not only do the access_ok() 5b24a7a2aa2040 arch/x86/include/asm/uaccess.h Linus Torvalds 2015-12-17 472 * checking before using them, but you have to surround them with the 5b24a7a2aa2040 arch/x86/include/asm/uaccess.h Linus Torvalds 2015-12-17 473 * user_access_begin/end() pair. 5b24a7a2aa2040 arch/x86/include/asm/uaccess.h Linus Torvalds 2015-12-17 474 */ b7f89bfe52cd52 arch/x86/include/asm/uaccess.h Peter Zijlstra 2019-04-03 475 static __must_check __always_inline bool user_access_begin(const void __user *ptr, size_t len) 594cc251fdd0d2 arch/x86/include/asm/uaccess.h Linus Torvalds 2019-01-04 476 { 594cc251fdd0d2 arch/x86/include/asm/uaccess.h Linus Torvalds 2019-01-04 @477 if (unlikely(!access_ok(ptr,len))) 594cc251fdd0d2 arch/x86/include/asm/uaccess.h Linus Torvalds 2019-01-04 478 return 0; 6e693b3ffecb0b arch/x86/include/asm/uaccess.h Will Deacon 2019-01-19 479 __uaccess_begin_nospec(); 594cc251fdd0d2 arch/x86/include/asm/uaccess.h Linus Torvalds 2019-01-04 480 return 1; 594cc251fdd0d2 arch/x86/include/asm/uaccess.h Linus Torvalds 2019-01-04 481 } 594cc251fdd0d2 arch/x86/include/asm/uaccess.h Linus Torvalds 2019-01-04 482 #define user_access_begin(a,b) user_access_begin(a,b) 5b24a7a2aa2040 arch/x86/include/asm/uaccess.h Linus Torvalds 2015-12-17 483 #define user_access_end() __uaccess_end() 5b24a7a2aa2040 arch/x86/include/asm/uaccess.h Linus Torvalds 2015-12-17 484 :::::: The code at line 477 was first introduced by commit :::::: 594cc251fdd0d231d342d88b2fdff4bc42fb0690 make 'user_access_begin()' do 'access_ok()' :::::: TO: Linus Torvalds <torvalds(a)linux-foundation.org&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