tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   c0842fbc1b18c7a044e6ff3e8fa78bfa822c7d1a
commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces
date:   7 weeks ago
config: x86_64-randconfig-s021-20200805 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.2-117-g8c7aee71-dirty
        git checkout 670d0a4b10704667765f7d18f7592993d02783aa
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 

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


sparse warnings: (new ones prefixed by >>)

   kernel/livepatch/transition.c:372:44: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *lock @@     got struct spinlock [noderef] __rcu * @@
   kernel/livepatch/transition.c:372:44: sparse:     expected struct spinlock [usertype] *lock
   kernel/livepatch/transition.c:372:44: sparse:     got struct spinlock [noderef] __rcu *
   kernel/livepatch/transition.c:374:46: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *lock @@     got struct spinlock [noderef] __rcu * @@
   kernel/livepatch/transition.c:374:46: sparse:     expected struct spinlock [usertype] *lock
   kernel/livepatch/transition.c:374:46: sparse:     got struct spinlock [noderef] __rcu *
   kernel/livepatch/transition.c: note: in included file:
   kernel/livepatch/../sched/sched.h:1657:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
>> kernel/livepatch/../sched/sched.h:1657:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/livepatch/../sched/sched.h:1657:25: sparse:    struct task_struct *

vim +1657 kernel/livepatch/../sched/sched.h

029632fbb7b7c9 kernel/sched.h Peter Zijlstra 2011-10-25  1654  
029632fbb7b7c9 kernel/sched.h Peter Zijlstra 2011-10-25  1655  static inline int task_current(struct rq *rq, struct task_struct *p)
029632fbb7b7c9 kernel/sched.h Peter Zijlstra 2011-10-25  1656  {
029632fbb7b7c9 kernel/sched.h Peter Zijlstra 2011-10-25 @1657  	return rq->curr == p;
029632fbb7b7c9 kernel/sched.h Peter Zijlstra 2011-10-25  1658  }
029632fbb7b7c9 kernel/sched.h Peter Zijlstra 2011-10-25  1659  

:::::: The code at line 1657 was first introduced by commit
:::::: 029632fbb7b7c9d85063cc9eb470de6c54873df3 sched: Make separate sched*.c translation units

:::::: TO: Peter Zijlstra <a.p.zijlstra@chello.nl>
:::::: CC: Ingo Molnar <mingo@elte.hu>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org