Hi Peter, Ingo, Andrew, A lot of sparse warnings below.. I'm afraid it's too much noise for you. Currently the policy is to send email notifications TO the commit author (Peter) and CC committer (Ingo) iff the current commit triggers any *new* errors/warnings, but to show all old+new errors/warnings inside the email body. The first new error/warning will be used as the email subject. Depending on your feedback, I can 1) disable sparse check totally, or 2) teach the build test script to show only *new* sparse warnings, or 3) show all old+new sparse warnings for some weeks so that people get to aware of the potential problems, then shut up and switch to (2) sparse warnings become a problem because there are over 12000 lines of them for the current kernel. The false rate is a bit high. Much higher than the gcc warnings. Comments are welcome! Thanks, Fengguang --- FYI: there are new gcc/sparse warnings show up in tree: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git master head: 1d06e6d35458dc14a43692b34c9cff8430d77af1 commit: b4cdf91668c27a5a6a5a3ed4234756c042dd8288 [25/89] sched/numa: Implement numa balancer config: i386-allmodconfig (attached as .config) All related error/warning messages are: kernel/fork.c:89:5: sparse: symbol 'max_threads' was not declared. Should it be static? kernel/fork.c:132:13: sparse: symbol 'arch_release_thread_info' was not declared. Should it be static? kernel/fork.c:243:13: sparse: symbol 'fork_init' was not declared. Should it be static? kernel/fork.c:1001:9: sparse: incorrect type in assignment (different address spaces) kernel/fork.c:1001:9: expected struct sighand_struct *sighand kernel/fork.c:1001:9: got struct sighand_struct [noderef] * kernel/fork.c:1118:19: sparse: incorrect type in assignment (different address spaces) kernel/fork.c:1118:19: expected struct task_struct [noderef] *owner kernel/fork.c:1118:19: got struct task_struct *p kernel/fork.c:1127:41: sparse: implicit cast to nocast type kernel/fork.c:1128:41: sparse: implicit cast to nocast type kernel/fork.c:1236:42: sparse: implicit cast to nocast type kernel/fork.c:1237:43: sparse: implicit cast to nocast type kernel/fork.c:1239:41: sparse: implicit cast to nocast type kernel/fork.c:1427:32: sparse: incorrect type in assignment (different address spaces) kernel/fork.c:1427:32: expected struct task_struct [noderef] *real_parent kernel/fork.c:1427:32: got struct task_struct * kernel/fork.c:1468:54: sparse: incorrect type in argument 2 (different address spaces) kernel/fork.c:1468:54: expected struct list_head *head kernel/fork.c:1468:54: got struct list_head [noderef] * kernel/fork.c:1201:27: sparse: dereference of noderef expression kernel/fork.c:1204:22: sparse: dereference of noderef expression kernel/fork.c:1525:22: sparse: dereference of noderef expression include/linux/sched.h:2395:37: sparse: context imbalance in 'coredump_wait' - different lock contexts for basic block mm/init-mm.c:25:18: sparse: symbol 'init_mm' was not declared. Should it be static? kernel/sched/core.c:560:9: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/core.c:1374:17: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/core.c:5327:9: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/core.c:5334:9: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:532:9: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/core.c:5876:9: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/fair.c:48:14: sparse: symbol 'normalized_sysctl_sched_latency' was not declared. Should it be static? kernel/sched/fair.c:67:14: sparse: symbol 'normalized_sysctl_sched_min_granularity' was not declared. Should it be static? kernel/sched/fair.c:89:14: sparse: symbol 'normalized_sysctl_sched_wakeup_granularity' was not declared. Should it be static? kernel/sched/sched.h:565:15: sparse: cast removes address space of expression kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/fair.c:2665:14: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/fair.c:2745:9: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/fair.c:2829:17: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/fair.c:4686:9: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/fair.c:4615:9: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/fair.c:4802:9: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/fair.c:4876:9: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/fair.c:5064:17: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/fair.c:4787:9: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/fair.c:5013:9: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/fair.c:5064:17: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:565:15: sparse: cast removes address space of expression kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/sched.h:565:15: sparse: incompatible types in comparison expression (different address spaces) kernel/sched/numa.c:103:14: sparse: incorrect type in initializer (different address spaces) kernel/sched/numa.c:103:14: expected void const [noderef] *__vpp_verify kernel/sched/numa.c:103:14: got struct numa_cpu_load * kernel/sched/numa.c:136:14: sparse: incorrect type in initializer (different address spaces) kernel/sched/numa.c:136:14: expected void const [noderef] *__vpp_verify kernel/sched/numa.c:136:14: got struct numa_cpu_load * kernel/sched/numa.c:400:39: sparse: incorrect type in assignment (different address spaces) kernel/sched/numa.c:400:39: expected struct numa_cpu_load * kernel/sched/numa.c:400:39: got struct numa_cpu_load [noderef] * kernel/sched/numa.c:433:44: sparse: incorrect type in initializer (different address spaces) kernel/sched/numa.c:433:44: expected void const [noderef] *__vpp_verify kernel/sched/numa.c:433:44: got struct numa_cpu_load * kernel/sched/numa.c:196:26: sparse: context imbalance in 'lock_ne_nq' - wrong count at exit kernel/sched/numa.c:221:9: sparse: context imbalance in 'double_lock_nq' - wrong count at exit kernel/sched/numa.c:231:28: sparse: context imbalance in 'double_unlock_nq' - unexpected unlock kernel/sched/numa.c:270:9: sparse: context imbalance in 'dequeue_ne' - unexpected unlock This is an auto and one-shot notification for new warnings. It's perfectly fine to ignore it if the code is known good. --- 0-DAY kernel build testing backend Open Source Technology Centre Fengguang Wu Intel Corporation