Hi Mathieu, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on tip/x86/asm] [cannot apply to tip/sched/core linus/master linux/master v5.8-rc1 next-20200616] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Mathieu-Desnoyers/sched_pair_cpu... base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 2ce0d7f9766f0e49bb54f149c77bae89464932fb config: x86_64-randconfig-s022-20200615 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-rc1-3-g55607964-dirty # save the attached .config to linux build tree make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) kernel/sched/core.c:260:48: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/core.c:260:48: sparse: expected struct task_struct *p kernel/sched/core.c:260:48: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/core.c:518:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/core.c:518:38: sparse: expected struct task_struct *curr kernel/sched/core.c:518:38: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/core.c:573:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] <asn:4> *parent @@ kernel/sched/core.c:573:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/core.c:573:9: sparse: got struct sched_domain [noderef] <asn:4> *parent kernel/sched/core.c:1450:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/core.c:1450:33: sparse: expected struct task_struct *p kernel/sched/core.c:1450:33: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/core.c:1450:68: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/core.c:1450:68: sparse: expected struct task_struct *tsk kernel/sched/core.c:1450:68: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/core.c:2305:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] <asn:4> *parent @@ kernel/sched/core.c:2305:17: sparse: expected struct sched_domain *[assigned] sd kernel/sched/core.c:2305:17: sparse: got struct sched_domain [noderef] <asn:4> *parent kernel/sched/core.c:2490:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct const *p @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/core.c:2490:36: sparse: expected struct task_struct const *p kernel/sched/core.c:2490:36: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/core.c:3799:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/core.c:3799:38: sparse: expected struct task_struct *curr kernel/sched/core.c:3799:38: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/core.c:4223:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *prev @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/core.c:4223:14: sparse: expected struct task_struct *prev kernel/sched/core.c:4223:14: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/core.c:4646:17: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/core.c:4646:17: sparse: struct task_struct * kernel/sched/core.c:4646:17: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/core.c:4845:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/core.c:4845:22: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/core.c:4845:22: sparse: struct task_struct * kernel/sched/core.c:8302:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/core.c:8302:25: sparse: expected struct task_struct *p kernel/sched/core.c:8302:25: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/pelt.h:80:13: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct const *p @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/pelt.h:80:13: sparse: expected struct task_struct const *p kernel/sched/pelt.h:80:13: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/core.c:260:11: sparse: sparse: dereference of noderef expression kernel/sched/core.c:1433:33: sparse: sparse: dereference of noderef expression kernel/sched/core.c:1434:19: sparse: sparse: dereference of noderef expression kernel/sched/core.c:1437:40: sparse: sparse: dereference of noderef expression kernel/sched/sched.h:1664:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1664:25: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1664:25: sparse: struct task_struct * kernel/sched/sched.h:1809:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1809:9: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1809:9: sparse: struct task_struct * kernel/sched/sched.h:1815:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1815:9: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1815:9: sparse: struct task_struct * kernel/sched/core.c:1406:38: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/core.c:1406:38: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/core.c:1406:38: sparse: struct task_struct const * kernel/sched/sched.h:1664:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1664:25: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1664:25: sparse: struct task_struct * kernel/sched/sched.h:1809:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1809:9: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1809:9: sparse: struct task_struct * kernel/sched/sched.h:1809:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1809:9: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1809:9: sparse: struct task_struct * kernel/sched/sched.h:1664:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1664:25: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1664:25: sparse: struct task_struct * kernel/sched/sched.h:1809:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1809:9: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1809:9: sparse: struct task_struct * kernel/sched/sched.h:1815:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1815:9: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1815:9: sparse: struct task_struct * kernel/sched/sched.h:1664:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1664:25: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1664:25: sparse: struct task_struct * kernel/sched/sched.h:1809:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1809:9: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1809:9: sparse: struct task_struct * kernel/sched/sched.h:1815:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1815:9: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1815:9: sparse: struct task_struct * kernel/sched/sched.h:1664:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1664:25: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1664:25: sparse: struct task_struct * kernel/sched/sched.h:1809:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1809:9: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1809:9: sparse: struct task_struct * kernel/sched/sched.h:1815:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1815:9: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1815:9: sparse: struct task_struct * Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org