tree: https://github.com/zen-kernel/zen-kernel 5.6/muqss head: 4c7261c9aa7d3cacc13cffb5ae4e270bc421bbcd commit: d5ebb5eb13168ae8e9cb78540557301bc339abf8 [17/20] muqss: Merge v0.199 config: i386-allyesconfig (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-240-gf0fe1cd9-dirty git checkout d5ebb5eb13168ae8e9cb78540557301bc339abf8 # save the attached .config to linux build tree make W=1 C=1 ARCH=i386 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) kernel/sched/MuQSS.c:1061:37: sparse: expected struct task_struct *tsk kernel/sched/MuQSS.c:1061:37: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/MuQSS.c:1064:21: sparse: expected struct task_struct *preempt kernel/sched/MuQSS.c:1064:21: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/MuQSS.c:1070:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_structstruct task_struct *tsk @@ kernel/sched/MuQSS.c:1070:40: sparse: expected struct task_struct *tsk kernel/sched/MuQSS.c:1070:40: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/MuQSS.c:1075:38: sparse: expected struct task_struct *p kernel/sched/MuQSS.c:1075:38: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/MuQSS.c:1709:17: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/MuQSS.c:1709:17: sparse: struct sched_domain [noderef] <asn:4> * kernel/sched/MuQSS.c:1709:17: sparse: struct sched_domain * kernel/sched/MuQSS.c:2384:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *parent @@ got struct task_structstruct task_struct *parent @@ kernel/sched/MuQSS.c:3581:37: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_structstruct task_struct *p @@ kernel/sched/MuQSS.c:3951:19: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *p @@ got struct task_structstruct task_struct *p @@ kernel/sched/MuQSS.c:4489:17: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/MuQSS.c:4489:17: sparse: struct task_struct * kernel/sched/MuQSS.c:4489:17: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/MuQSS.c:4659:30: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/MuQSS.c:4659:30: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/MuQSS.c:4659:30: sparse: struct task_struct * kernel/sched/MuQSS.c:5625:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_structstruct task_struct *p @@ kernel/sched/MuQSS.c:5894:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_structstruct task_struct *p @@ kernel/sched/MuQSS.c:6063:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/MuQSS.c:6063:9: sparse: struct sched_domain [noderef] <asn:4> * kernel/sched/MuQSS.c:6063:9: sparse: struct sched_domain * kernel/sched/MuQSS.c:6471:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/MuQSS.c:6471:9: sparse: struct sched_domain [noderef] <asn:4> * kernel/sched/MuQSS.c:6471:9: sparse: struct sched_domain * kernel/sched/MuQSS.c:6478:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/MuQSS.c:6478:9: sparse: struct sched_domain [noderef] <asn:4> * kernel/sched/MuQSS.c:6478:9: sparse: struct sched_domain * kernel/sched/MuQSS.c:6827:17: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/MuQSS.c:6827:17: sparse: struct sched_domain [noderef] <asn:4> * kernel/sched/MuQSS.c:6827:17: sparse: struct sched_domain * kernel/sched/MuQSS.h:773:16: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/MuQSS.h:773:16: sparse: struct update_util_data [noderef] <asn:4> * kernel/sched/MuQSS.h:773:16: sparse: struct update_util_data * kernel/sched/MuQSS.c:1439:38: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/MuQSS.c:1439:38: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/MuQSS.c:1439:38: sparse: struct task_struct const * kernel/sched/MuQSS.c:3266:15: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/MuQSS.c:3266:15: sparse: struct task_struct * kernel/sched/MuQSS.c:3266:15: sparse: struct task_struct [noderef] <asn:4> * vim +1061 kernel/sched/MuQSS.c edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1051 edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1052 /* edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1053 * Resched current on rq. We don't know if rq is local to this CPU nor if it edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1054 * is locked so we do not use an intermediate variable for the task to avoid edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1055 * having it dereferenced. edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1056 */ edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1057 static void resched_curr(struct rq *rq) edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1058 { edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1059 int cpu; edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1060 edbc5ae3fb7ae07 Con Kolivas 2019-10-25 @1061 if (test_tsk_need_resched(rq->curr)) edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1062 return; edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1063 edbc5ae3fb7ae07 Con Kolivas 2019-10-25 @1064 rq->preempt = rq->curr; edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1065 cpu = rq->cpu; edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1066 edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1067 /* We're doing this without holding the rq lock if it's not task_rq */ edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1068 edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1069 if (cpu == smp_processor_id()) { edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1070 set_tsk_need_resched(rq->curr); edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1071 set_preempt_need_resched(); edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1072 return; edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1073 } edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1074 edbc5ae3fb7ae07 Con Kolivas 2019-10-25 @1075 if (set_nr_and_not_polling(rq->curr)) edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1076 smp_sched_reschedule(cpu); edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1077 else edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1078 trace_sched_wake_idle_without_ipi(cpu); edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1079 } edbc5ae3fb7ae07 Con Kolivas 2019-10-25 1080 :::::: The code at line 1061 was first introduced by commit :::::: edbc5ae3fb7ae074a02e40802df66ae90ff4888e MultiQueue Skiplist Scheduler v0.198 :::::: TO: Con Kolivas <kernel(a)kolivas.org&gt; :::::: CC: Steven Barrett <steven(a)liquorix.net&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org