kernel/events/core.c:4881:24: sparse: sparse: incorrect type in assignment (different base types)

From: kernel test robot
Date: Wed Nov 01 2023 - 03:26:09 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 8bc9e6515183935fa0cccaf67455c439afe4982b
commit: ee219b946e4bf7df2d2c68dfaae1bdaa360ec2ea uapi: turn __poll_t sparse checks on by default
date: 5 years ago
config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20231101/202311011538.SQ04hTye-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231101/202311011538.SQ04hTye-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311011538.SQ04hTye-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
kernel/events/core.c:570:26: sparse: sparse: function 'perf_pmu_name' with external linkage has definition
kernel/events/core.c:1034:1: sparse: sparse: symbol 'perf_cgroup_switch' was not declared. Should it be static?
kernel/events/core.c:1132:22: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got int * @@
kernel/events/core.c:1132:22: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:1132:22: sparse: got int *
kernel/events/core.c:1139:22: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got int * @@
kernel/events/core.c:1139:22: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:1139:22: sparse: got int *
kernel/events/core.c:1382:15: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:1382:15: sparse: struct perf_event_context [noderef] <asn:4> *
kernel/events/core.c:1382:15: sparse: struct perf_event_context *
kernel/events/core.c:1395:28: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:1395:28: sparse: struct perf_event_context [noderef] <asn:4> *
kernel/events/core.c:1395:28: sparse: struct perf_event_context *
kernel/events/core.c:3083:18: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:3083:18: sparse: struct perf_event_context [noderef] <asn:4> *
kernel/events/core.c:3083:18: sparse: struct perf_event_context *
kernel/events/core.c:3084:23: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:3084:23: sparse: struct perf_event_context [noderef] <asn:4> *
kernel/events/core.c:3084:23: sparse: struct perf_event_context *
kernel/events/core.c:3115:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:3115:25: sparse: struct perf_event_context [noderef] <asn:4> *
kernel/events/core.c:3115:25: sparse: struct perf_event_context *
kernel/events/core.c:3116:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:3116:25: sparse: struct perf_event_context [noderef] <asn:4> *
kernel/events/core.c:3116:25: sparse: struct perf_event_context *
kernel/events/core.c:3139:43: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got struct perf_cpu_context * @@
kernel/events/core.c:3139:43: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:3139:43: sparse: got struct perf_cpu_context *
kernel/events/core.c:3150:43: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got struct perf_cpu_context * @@
kernel/events/core.c:3150:43: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:3150:43: sparse: got struct perf_cpu_context *
kernel/events/core.c:4119:26: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got struct perf_cpu_context * @@
kernel/events/core.c:4119:26: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:4119:26: sparse: got struct perf_cpu_context *
>> kernel/events/core.c:4881:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __poll_t [usertype] events @@ got int @@
kernel/events/core.c:4881:24: sparse: expected restricted __poll_t [usertype] events
kernel/events/core.c:4881:24: sparse: got int
kernel/events/core.c:5068:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:5068:22: sparse: struct ring_buffer [noderef] <asn:4> *
kernel/events/core.c:5068:22: sparse: struct ring_buffer *
kernel/events/core.c:5197:14: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:5197:14: sparse: struct ring_buffer [noderef] <asn:4> *
kernel/events/core.c:5197:14: sparse: struct ring_buffer *
kernel/events/core.c:5230:14: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:5230:14: sparse: struct ring_buffer [noderef] <asn:4> *
kernel/events/core.c:5230:14: sparse: struct ring_buffer *
kernel/events/core.c:5287:14: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:5287:14: sparse: struct ring_buffer [noderef] <asn:4> *
kernel/events/core.c:5287:14: sparse: struct ring_buffer *
kernel/events/core.c:5373:14: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:5373:14: sparse: struct ring_buffer [noderef] <asn:4> *
kernel/events/core.c:5373:14: sparse: struct ring_buffer *
kernel/events/core.c:5386:14: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:5386:14: sparse: struct ring_buffer [noderef] <asn:4> *
kernel/events/core.c:5386:14: sparse: struct ring_buffer *
kernel/events/core.c:6646:23: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:6646:23: sparse: struct perf_event_context [noderef] <asn:4> *
kernel/events/core.c:6646:23: sparse: struct perf_event_context *
kernel/events/core.c:6736:13: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:6736:13: sparse: struct ring_buffer [noderef] <asn:4> *
kernel/events/core.c:6736:13: sparse: struct ring_buffer *
kernel/events/core.c:6744:43: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got struct perf_cpu_context * @@
kernel/events/core.c:6744:43: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:6744:43: sparse: got struct perf_cpu_context *
kernel/events/core.c:7399:23: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:7399:23: sparse: struct perf_event_context [noderef] <asn:4> *
kernel/events/core.c:7399:23: sparse: struct perf_event_context *
kernel/events/core.c:8079:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:8079:9: sparse: struct swevent_hlist [noderef] <asn:4> *
kernel/events/core.c:8079:9: sparse: struct swevent_hlist *
kernel/events/core.c:9408:35: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected struct perf_cpu_context [noderef] <asn:3> * @@ got struct perf_cpu_context *[noderef] pmu_cpu_context @@
kernel/events/core.c:9408:35: sparse: expected struct perf_cpu_context [noderef] <asn:3> *
kernel/events/core.c:9408:35: sparse: got struct perf_cpu_context *[noderef] pmu_cpu_context
kernel/events/core.c:9425:24: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] <asn:3> *__pdata @@ got struct perf_cpu_context *[noderef] pmu_cpu_context @@
kernel/events/core.c:9425:24: sparse: expected void [noderef] <asn:3> *__pdata
kernel/events/core.c:9425:24: sparse: got struct perf_cpu_context *[noderef] pmu_cpu_context
kernel/events/core.c:9440:1: sparse: sparse: symbol 'dev_attr_nr_addr_filters' was not declared. Should it be static?
kernel/events/core.c:9491:26: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got struct perf_cpu_context * @@
kernel/events/core.c:9491:26: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:9491:26: sparse: got struct perf_cpu_context *
kernel/events/core.c:9570:32: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected int *[noderef] pmu_disable_count @@ got int [noderef] <asn:3> * @@
kernel/events/core.c:9570:32: sparse: expected int *[noderef] pmu_disable_count
kernel/events/core.c:9570:32: sparse: got int [noderef] <asn:3> *
kernel/events/core.c:9610:30: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct perf_cpu_context *[noderef] pmu_cpu_context @@ got struct perf_cpu_context [noderef] <asn:3> * @@
kernel/events/core.c:9610:30: sparse: expected struct perf_cpu_context *[noderef] pmu_cpu_context
kernel/events/core.c:9610:30: sparse: got struct perf_cpu_context [noderef] <asn:3> *
kernel/events/core.c:9615:30: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct perf_cpu_context *[noderef] pmu_cpu_context @@ got struct perf_cpu_context [noderef] <asn:3> * @@
kernel/events/core.c:9615:30: sparse: expected struct perf_cpu_context *[noderef] pmu_cpu_context
kernel/events/core.c:9615:30: sparse: got struct perf_cpu_context [noderef] <asn:3> *
kernel/events/core.c:9622:26: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got struct perf_cpu_context * @@
kernel/events/core.c:9622:26: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:9622:26: sparse: got struct perf_cpu_context *
kernel/events/core.c:9675:24: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] <asn:3> *__pdata @@ got int *[noderef] pmu_disable_count @@
kernel/events/core.c:9675:24: sparse: expected void [noderef] <asn:3> *__pdata
kernel/events/core.c:9675:24: sparse: got int *[noderef] pmu_disable_count
kernel/events/core.c:9696:24: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] <asn:3> *__pdata @@ got int *[noderef] pmu_disable_count @@
kernel/events/core.c:9696:24: sparse: expected void [noderef] <asn:3> *__pdata
kernel/events/core.c:9696:24: sparse: got int *[noderef] pmu_disable_count
kernel/events/core.c:10897:20: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got struct perf_cpu_context * @@
kernel/events/core.c:10897:20: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:10897:20: sparse: got struct perf_cpu_context *
kernel/events/core.c:10898:20: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got struct perf_cpu_context * @@
kernel/events/core.c:10898:20: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:10898:20: sparse: got struct perf_cpu_context *
kernel/events/core.c:11068:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:11068:9: sparse: struct perf_event_context [noderef] <asn:4> *
kernel/events/core.c:11068:9: sparse: struct perf_event_context *
kernel/events/core.c:11178:17: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/core.c:11178:17: sparse: struct perf_event_context [noderef] <asn:4> *
kernel/events/core.c:11178:17: sparse: struct perf_event_context *
kernel/events/core.c:11566:6: sparse: sparse: symbol 'perf_swevent_init_cpu' was not declared. Should it be static?
kernel/events/core.c:11631:26: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got struct perf_cpu_context * @@
kernel/events/core.c:11631:26: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:11631:26: sparse: got struct perf_cpu_context *
kernel/events/core.c:156:9: sparse: sparse: context imbalance in 'perf_ctx_lock' - wrong count at exit
kernel/events/core.c:164:17: sparse: sparse: context imbalance in 'perf_ctx_unlock' - unexpected unlock
kernel/events/core.c:149:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got struct perf_cpu_context * @@
kernel/events/core.c:149:16: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:149:16: sparse: got struct perf_cpu_context *
kernel/events/core.c:149:16: sparse: sparse: dereference of noderef expression
kernel/events/core.c:149:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got struct perf_cpu_context * @@
kernel/events/core.c:149:16: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:149:16: sparse: got struct perf_cpu_context *
kernel/events/core.c:149:16: sparse: sparse: dereference of noderef expression
kernel/events/core.c:1132:22: sparse: sparse: dereference of noderef expression
kernel/events/core.c:1139:22: sparse: sparse: dereference of noderef expression
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:686:9: sparse: sparse: context imbalance in 'perf_lock_task_context' - different lock contexts for basic block
kernel/events/core.c:1429:17: sparse: sparse: context imbalance in 'perf_pin_task_context' - unexpected unlock
kernel/events/core.c:149:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3> *__vpp_verify @@ got struct perf_cpu_context * @@
kernel/events/core.c:149:16: sparse: expected void const [noderef] <asn:3> *__vpp_verify
kernel/events/core.c:149:16: sparse: got struct perf_cpu_context *
kernel/events/core.c:149:16: sparse: sparse: dereference of noderef expression
kernel/events/core.c:2538:9: sparse: sparse: context imbalance in '__perf_install_in_context' - wrong count at exit
--
>> kernel/events/ring_buffer.c:22:39: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected int i @@ got restricted __poll_t [usertype] @@
kernel/events/ring_buffer.c:22:39: sparse: expected int i
kernel/events/ring_buffer.c:22:39: sparse: got restricted __poll_t [usertype]
kernel/events/ring_buffer.c:137:14: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/ring_buffer.c:137:14: sparse: struct ring_buffer [noderef] <asn:4> *
kernel/events/ring_buffer.c:137:14: sparse: struct ring_buffer *
kernel/events/ring_buffer.c:137:14: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/ring_buffer.c:137:14: sparse: struct ring_buffer [noderef] <asn:4> *
kernel/events/ring_buffer.c:137:14: sparse: struct ring_buffer *
kernel/events/ring_buffer.c:137:14: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/events/ring_buffer.c:137:14: sparse: struct ring_buffer [noderef] <asn:4> *
kernel/events/ring_buffer.c:137:14: sparse: struct ring_buffer *
kernel/events/ring_buffer.c:105:1: warning: 'inline' is not at beginning of declaration [-Wold-style-declaration]
105 | static bool __always_inline
| ^~~~~~
kernel/events/ring_buffer.c:116:1: warning: 'inline' is not at beginning of declaration [-Wold-style-declaration]
116 | static int __always_inline
| ^~~~~~
kernel/events/ring_buffer.c:416:1: warning: 'inline' is not at beginning of declaration [-Wold-style-declaration]
416 | static bool __always_inline rb_need_aux_wakeup(struct ring_buffer *rb)
| ^~~~~~

vim +4881 kernel/events/core.c

0793a61d4df8da kernel/perf_counter.c Thomas Gleixner 2008-12-04 4862
9dd957485d7d89 kernel/events/core.c Al Viro 2017-07-03 4863 static __poll_t perf_poll(struct file *file, poll_table *wait)
0793a61d4df8da kernel/perf_counter.c Thomas Gleixner 2008-12-04 4864 {
cdd6c482c9ff9c kernel/perf_event.c Ingo Molnar 2009-09-21 4865 struct perf_event *event = file->private_data;
76369139ceb955 kernel/events/core.c Frederic Weisbecker 2011-05-19 4866 struct ring_buffer *rb;
a9a08845e9acbd kernel/events/core.c Linus Torvalds 2018-02-11 4867 __poll_t events = EPOLLHUP;
c7138f37f905bb kernel/perf_counter.c Peter Zijlstra 2009-03-24 4868
e708d7ad807374 kernel/events/core.c Sebastian Andrzej Siewior 2014-08-04 4869 poll_wait(file, &event->waitq, wait);
179033b3e064d2 kernel/events/core.c Jiri Olsa 2014-08-07 4870
dc633982ff3f4f kernel/events/core.c Jiri Olsa 2014-09-12 4871 if (is_event_hup(event))
179033b3e064d2 kernel/events/core.c Jiri Olsa 2014-08-07 4872 return events;
c7138f37f905bb kernel/perf_counter.c Peter Zijlstra 2009-03-24 4873
10c6db110d0eb4 kernel/events/core.c Peter Zijlstra 2011-11-26 4874 /*
9bb5d40cd93c9d kernel/events/core.c Peter Zijlstra 2013-06-04 4875 * Pin the event->rb by taking event->mmap_mutex; otherwise
9bb5d40cd93c9d kernel/events/core.c Peter Zijlstra 2013-06-04 4876 * perf_event_set_output() can swizzle our rb and make us miss wakeups.
10c6db110d0eb4 kernel/events/core.c Peter Zijlstra 2011-11-26 4877 */
10c6db110d0eb4 kernel/events/core.c Peter Zijlstra 2011-11-26 4878 mutex_lock(&event->mmap_mutex);
9bb5d40cd93c9d kernel/events/core.c Peter Zijlstra 2013-06-04 4879 rb = event->rb;
9bb5d40cd93c9d kernel/events/core.c Peter Zijlstra 2013-06-04 4880 if (rb)
76369139ceb955 kernel/events/core.c Frederic Weisbecker 2011-05-19 @4881 events = atomic_xchg(&rb->poll, 0);
10c6db110d0eb4 kernel/events/core.c Peter Zijlstra 2011-11-26 4882 mutex_unlock(&event->mmap_mutex);
0793a61d4df8da kernel/perf_counter.c Thomas Gleixner 2008-12-04 4883 return events;
0793a61d4df8da kernel/perf_counter.c Thomas Gleixner 2008-12-04 4884 }
0793a61d4df8da kernel/perf_counter.c Thomas Gleixner 2008-12-04 4885

:::::: The code at line 4881 was first introduced by commit
:::::: 76369139ceb955deefc509e6e12ce9d6ce50ccab perf: Split up buffer handling from core code

:::::: TO: Frederic Weisbecker <fweisbec@xxxxxxxxx>
:::::: CC: Ingo Molnar <mingo@xxxxxxx>

--
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