[kbuild-all] [peterz-queue:perf/core 18/22] kernel/events/core.c:6418:22: sparse: sparse: incorrect type in assignment (different address spaces)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git perf/core head: 0da503cd07380952599b67ded6efe030d78ea42d commit: c7d4112e9f0e69edd649665836ce72008b95ab9f [18/22] perf: Add support for SIGTRAP on perf events config: arc-randconfig-s032-20210414 (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-280-g2cd6d34e-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?... git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git git fetch --no-tags peterz-queue perf/core git checkout c7d4112e9f0e69edd649665836ce72008b95ab9f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=arc 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/events/core.c:584:26: sparse: sparse: function 'perf_pmu_name' with external linkage has definition kernel/events/core.c:1467:15: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:1467:15: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:1467:15: sparse: struct perf_event_context * kernel/events/core.c:1480:28: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:1480:28: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:1480:28: sparse: struct perf_event_context * kernel/events/core.c:3430:18: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:3430:18: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:3430:18: sparse: struct perf_event_context * kernel/events/core.c:3431:23: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:3431:23: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:3431:23: sparse: struct perf_event_context * kernel/events/core.c:3479:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:3479:25: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:3479:25: sparse: struct perf_event_context * kernel/events/core.c:3480:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:3480:25: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:3480:25: sparse: struct perf_event_context * kernel/events/core.c:4673:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:4673:25: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:4673:25: sparse: struct perf_event_context * kernel/events/core.c:5935:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:5935:9: sparse: struct perf_buffer [noderef] __rcu * kernel/events/core.c:5935:9: sparse: struct perf_buffer * kernel/events/core.c:5411:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __poll_t [usertype] events @@ got int @@ kernel/events/core.c:5641:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:5641:22: sparse: struct perf_buffer [noderef] __rcu * kernel/events/core.c:5641:22: sparse: struct perf_buffer * kernel/events/core.c:5777:14: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:5777:14: sparse: struct perf_buffer [noderef] __rcu * kernel/events/core.c:5777:14: sparse: struct perf_buffer * kernel/events/core.c:5810:14: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:5810:14: sparse: struct perf_buffer [noderef] __rcu * kernel/events/core.c:5810:14: sparse: struct perf_buffer * kernel/events/core.c:5867:14: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:5867:14: sparse: struct perf_buffer [noderef] __rcu * kernel/events/core.c:5867:14: sparse: struct perf_buffer * kernel/events/core.c:5953:14: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:5953:14: sparse: struct perf_buffer [noderef] __rcu * kernel/events/core.c:5953:14: sparse: struct perf_buffer * kernel/events/core.c:5966:14: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:5966:14: sparse: struct perf_buffer [noderef] __rcu * kernel/events/core.c:5966:14: sparse: struct perf_buffer * kernel/events/core.c:6418:22: sparse: expected void [noderef] __user *[addressable] [assigned] _addr kernel/events/core.c:6418:22: sparse: got void * kernel/events/core.c:6682:6: sparse: sparse: symbol 'perf_pmu_snapshot_aux' was not declared. Should it be static? kernel/events/core.c:7601:23: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:7601:23: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:7601:23: sparse: struct perf_event_context * kernel/events/core.c:7653:23: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:7653:23: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:7653:23: sparse: struct perf_event_context * kernel/events/core.c:7692:13: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:7692:13: sparse: struct perf_buffer [noderef] __rcu * kernel/events/core.c:7692:13: sparse: struct perf_buffer * kernel/events/core.c:7797:61: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/events/core.c:7797:61: sparse: expected struct task_struct *p kernel/events/core.c:7797:61: sparse: got struct task_struct [noderef] __rcu *real_parent kernel/events/core.c:7799:61: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/events/core.c:7799:61: sparse: expected struct task_struct *p kernel/events/core.c:7799:61: sparse: got struct task_struct [noderef] __rcu *real_parent kernel/events/core.c:8504:23: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:8504:23: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:8504:23: sparse: struct perf_event_context * kernel/events/core.c:9469:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:9469:9: sparse: struct swevent_hlist [noderef] __rcu * kernel/events/core.c:9469:9: sparse: struct swevent_hlist * kernel/events/core.c:9508:17: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:9508:17: sparse: struct swevent_hlist [noderef] __rcu * kernel/events/core.c:9508:17: sparse: struct swevent_hlist * kernel/events/core.c:9689:23: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:9689:23: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:9689:23: sparse: struct perf_event_context * kernel/events/core.c:10874:1: sparse: sparse: symbol 'dev_attr_nr_addr_filters' was not declared. Should it be static? kernel/events/core.c:12630:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:12630:9: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:12630:9: sparse: struct perf_event_context * kernel/events/core.c:12740:17: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:12740:17: sparse: struct perf_event_context [noderef] __rcu * kernel/events/core.c:12740:17: sparse: struct perf_event_context * kernel/events/core.c:13170:17: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:13170:17: sparse: struct swevent_hlist [noderef] __rcu * kernel/events/core.c:13170:17: sparse: struct swevent_hlist * kernel/events/core.c:166:9: sparse: sparse: context imbalance in 'perf_ctx_lock' - wrong count at exit kernel/events/core.c:174:17: sparse: sparse: context imbalance in 'perf_ctx_unlock' - unexpected unlock kernel/events/core.c: note: in included file (through include/linux/rculist.h, include/linux/dcache.h, include/linux/fs.h): include/linux/rcupdate.h:706:9: sparse: sparse: context imbalance in 'perf_lock_task_context' - different lock contexts for basic block kernel/events/core.c:1514:17: sparse: sparse: context imbalance in 'perf_pin_task_context' - unexpected unlock kernel/events/core.c:2827:9: sparse: sparse: context imbalance in '__perf_install_in_context' - wrong count at exit kernel/events/core.c:4645:17: sparse: sparse: context imbalance in 'find_get_context' - unexpected unlock kernel/events/core.c: note: in included file: kernel/events/internal.h:197:46: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const [noderef] __user *from @@ got void const *src @@ kernel/events/core.c:9318:17: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:9318:17: sparse: struct swevent_hlist [noderef] __rcu * kernel/events/core.c:9318:17: sparse: struct swevent_hlist * kernel/events/core.c:9338:17: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:9338:17: sparse: struct swevent_hlist [noderef] __rcu * kernel/events/core.c:9338:17: sparse: struct swevent_hlist * kernel/events/core.c:9458:16: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:9458:16: sparse: struct swevent_hlist [noderef] __rcu * kernel/events/core.c:9458:16: sparse: struct swevent_hlist * kernel/events/core.c:9458:16: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:9458:16: sparse: struct swevent_hlist [noderef] __rcu * kernel/events/core.c:9458:16: sparse: struct swevent_hlist * kernel/events/core.c:9458:16: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/events/core.c:9458:16: sparse: struct swevent_hlist [noderef] __rcu * kernel/events/core.c:9458:16: sparse: struct swevent_hlist * vim +6418 kernel/events/core.c 6394 6395 static void perf_sigtrap(struct perf_event *event) 6396 { 6397 struct kernel_siginfo info; 6398 6399 /* 6400 * We'd expect this to only occur if the irq_work is delayed and either 6401 * ctx->task or current has changed in the meantime. This can be the 6402 * case on architectures that do not implement arch_irq_work_raise(). 6403 */ 6404 if (WARN_ON_ONCE(event->ctx->task != current)) 6405 return; 6406 6407 /* 6408 * perf_pending_event() can race with the task exiting. 6409 */ 6410 if (current->flags & PF_EXITING) 6411 return; 6412 6413 clear_siginfo(&info); 6414 info.si_signo = SIGTRAP; 6415 info.si_code = TRAP_PERF; 6416 info.si_errno = event->attr.type; 6417 info.si_perf = event->attr.sig_data; 6419 force_sig_info(&info); 6420 } 6421 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org