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Subjectkernel/livepatch/../sched/sched.h:1657:25: sparse: struct task_struct __rcu COPYING CREDITS Documentation Kbuild Kconfig LICENSES MAINTAINERS Makefile README arch block certs crypto drivers fs include init ipc kernel lib mm net samples scripts security s
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
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