[tip:sched/core 7/13] kernel/sched/core.c:8677:1: sparse: sparse: symbol 'sched_dynamic_mutex' was not declared. Should it be static?

[tip:sched/core 7/13] kernel/sched/core.c:8677:1: sparse: sparse: symbol 'sched_dynamic_mutex' was not declared. Should it be static?

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core
head:   d82caa273565b45fcf103148950549af76c314b0
commit: e3ff7c609f39671d1aaff4fb4a8594e14f3e03f8 [7/13] livepatch,sched: Add livepatch task switching to cond_resched()
config: arm64-randconfig-s053-20230406 (https://download.01.org/0day-ci/archive/20230406/202304062335.tNuUjgsl-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=e3ff7c609f39671d1aaff4fb4a8594e14f3e03f8
        git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
        git fetch --no-tags tip sched/core
        git checkout e3ff7c609f39671d1aaff4fb4a8594e14f3e03f8
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/remoteproc/ kernel/sched/ lib/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304062335.tNuUjgsl-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   kernel/sched/core.c:791:48: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected struct task_struct *p @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/core.c:791:48: sparse:     expected struct task_struct *p
   kernel/sched/core.c:791:48: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/core.c:1038:38: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct task_struct *curr @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/core.c:1038:38: sparse:     expected struct task_struct *curr
   kernel/sched/core.c:1038:38: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/core.c:1096:9: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/core.c:1096:9: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/core.c:1096:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/core.c:2202:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct task_struct *p @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/core.c:2202:33: sparse:     expected struct task_struct *p
   kernel/sched/core.c:2202:33: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/core.c:2202:68: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct task_struct *tsk @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/core.c:2202:68: sparse:     expected struct task_struct *tsk
   kernel/sched/core.c:2202:68: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/core.c:3674:17: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/core.c:3674:17: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/core.c:3674:17: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/core.c:3881:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct task_struct const *p @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/core.c:3881:28: sparse:     expected struct task_struct const *p
   kernel/sched/core.c:3881:28: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/core.c:9401:43: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct task_struct *push_task @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/core.c:9401:43: sparse:     expected struct task_struct *push_task
   kernel/sched/core.c:9401:43: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/core.c:5582:38: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct task_struct *curr @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/core.c:5582:38: sparse:     expected struct task_struct *curr
   kernel/sched/core.c:5582:38: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/core.c:6536:14: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct task_struct *prev @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/core.c:6536:14: sparse:     expected struct task_struct *prev
   kernel/sched/core.c:6536:14: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/core.c:7062:17: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/core.c:7062:17: sparse:    struct task_struct *
   kernel/sched/core.c:7062:17: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/core.c:7278:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/core.c:7278:22: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/core.c:7278:22: sparse:    struct task_struct *
>> kernel/sched/core.c:8677:1: sparse: sparse: symbol 'sched_dynamic_mutex' was not declared. Should it be static?
   kernel/sched/core.c:11419:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct task_struct *p @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/core.c:11419:25: sparse:     expected struct task_struct *p
   kernel/sched/core.c:11419:25: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/core.c:547:6: sparse: sparse: context imbalance in 'raw_spin_rq_lock_nested' - wrong count at exit
   kernel/sched/core.c:572:6: sparse: sparse: context imbalance in 'raw_spin_rq_trylock' - wrong count at exit
   kernel/sched/core.c:596:6: sparse: sparse: context imbalance in 'raw_spin_rq_unlock' - unexpected unlock
   kernel/sched/core.c: note: in included file:
   kernel/sched/sched.h:1582:9: sparse: sparse: context imbalance in '__task_rq_lock' - wrong count at exit
   kernel/sched/sched.h:1582:9: sparse: sparse: context imbalance in 'task_rq_lock' - wrong count at exit
   kernel/sched/core.c: note: in included file:
   kernel/sched/pelt.h:97:13: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct task_struct const *p @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/pelt.h:97:13: sparse:     expected struct task_struct const *p
   kernel/sched/pelt.h:97:13: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/core.c:791:11: sparse: sparse: dereference of noderef expression
   kernel/sched/core.c:2193:33: sparse: sparse: dereference of noderef expression
   kernel/sched/core.c:2194:19: sparse: sparse: dereference of noderef expression
   kernel/sched/core.c:2195:18: sparse: sparse: dereference of noderef expression
   kernel/sched/core.c: note: in included file:
   kernel/sched/sched.h:2073:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2073:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2073:25: sparse:    struct task_struct *
   kernel/sched/sched.h:2235:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct *
   kernel/sched/core.c:2168:38: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/core.c:2168:38: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/core.c:2168:38: sparse:    struct task_struct const *
   kernel/sched/sched.h:2073:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2073:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2073:25: sparse:    struct task_struct *
   kernel/sched/sched.h:2235:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct *
   kernel/sched/sched.h:2235:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct *
   kernel/sched/sched.h:2073:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2073:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2073:25: sparse:    struct task_struct *
   kernel/sched/sched.h:2235:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct *
   kernel/sched/sched.h:2073:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2073:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2073:25: sparse:    struct task_struct *
   kernel/sched/sched.h:2235:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct *
   kernel/sched/sched.h:2073:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2073:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2073:25: sparse:    struct task_struct *
   kernel/sched/sched.h:2235:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct *
   kernel/sched/sched.h:2073:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2073:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2073:25: sparse:    struct task_struct *
   kernel/sched/sched.h:2235:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2235:9: sparse:    struct task_struct *

vim +/sched_dynamic_mutex +8677 kernel/sched/core.c

  8676	
> 8677	DEFINE_MUTEX(sched_dynamic_mutex);
  8678	static bool klp_override;
  8679	

-- 
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