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From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com
Subject: kernel/sched/fair.c:4049:30: sparse: sparse: cast to non-scalar
Date: Tue, 11 Apr 2023 21:36:02 +0800	[thread overview]
Message-ID: <202304112117.6ljCPug7-lkp@intel.com> (raw)

:::::: 
:::::: Manual check reason: "low confidence static check warning: kernel/sched/fair.c:4049:30: sparse: sparse: cast to non-scalar"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Chengming Zhou <zhouchengming@bytedance.com>
CC: Peter Zijlstra <peterz@infradead.org>
CC: Vincent Guittot <vincent.guittot@linaro.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   0d3eb744aed40ffce820cded61d7eac515199165
commit: 51bf903b64bdde4e4c9009a9e2b4a589845d9d81 sched/fair: Optimize and simplify rq leaf_cfs_rq_list
date:   10 months ago
:::::: branch date: 16 hours ago
:::::: commit date: 10 months ago
config: alpha-randconfig-s032-20230411 (https://download.01.org/0day-ci/archive/20230411/202304112117.6ljCPug7-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 12.1.0
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: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=51bf903b64bdde4e4c9009a9e2b4a589845d9d81
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 51bf903b64bdde4e4c9009a9e2b4a589845d9d81
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=alpha olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=alpha SHELL=/bin/bash kernel/sched/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/r/202304112117.6ljCPug7-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   kernel/sched/fair.c:930:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct sched_entity *se @@     got struct sched_entity [noderef] __rcu * @@
   kernel/sched/fair.c:930:34: sparse:     expected struct sched_entity *se
   kernel/sched/fair.c:930:34: sparse:     got struct sched_entity [noderef] __rcu *
   kernel/sched/fair.c:10918:9: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:10918:9: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/fair.c:10918:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:5083:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/fair.c:5083:22: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/fair.c:5083:22: sparse:    struct task_struct *
   kernel/sched/fair.c:6770:20: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:6770:20: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/fair.c:6770:20: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:6904:9: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] tmp @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:6904:9: sparse:     expected struct sched_domain *[assigned] tmp
   kernel/sched/fair.c:6904:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:7102:38: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct task_struct *curr @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/fair.c:7102:38: sparse:     expected struct task_struct *curr
   kernel/sched/fair.c:7102:38: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/fair.c:7400:38: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct task_struct *curr @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/fair.c:7400:38: sparse:     expected struct task_struct *curr
   kernel/sched/fair.c:7400:38: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/fair.c:8385:40: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct sched_domain *child @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/fair.c:8385:40: sparse:     expected struct sched_domain *child
   kernel/sched/fair.c:8385:40: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/fair.c:8929:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/fair.c:8929:22: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/fair.c:8929:22: sparse:    struct task_struct *
   kernel/sched/fair.c:10193:9: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:10193:9: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/fair.c:10193:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:9853:44: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct sched_domain *sd_parent @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:9853:44: sparse:     expected struct sched_domain *sd_parent
   kernel/sched/fair.c:9853:44: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:10289:9: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:10289:9: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/fair.c:10289:9: sparse:     got struct sched_domain [noderef] __rcu *parent
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast to non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast from non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast to non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast from non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast to non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast from non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast to non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast from non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast to non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast from non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast to non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast from non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast to non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast from non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast to non-scalar
>> kernel/sched/fair.c:4049:30: sparse: sparse: cast from non-scalar
   kernel/sched/fair.c:6155:28: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *sd @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/fair.c:6155:28: sparse:     expected struct sched_domain *sd
   kernel/sched/fair.c:6155:28: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/fair.c:6161:28: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *sd @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/fair.c:6161:28: sparse:     expected struct sched_domain *sd
   kernel/sched/fair.c:6161:28: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/fair.c:6168:28: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *sd @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/fair.c:6168:28: sparse:     expected struct sched_domain *sd
   kernel/sched/fair.c:6168:28: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/fair.c:6176:17: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] tmp @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/fair.c:6176:17: sparse:     expected struct sched_domain *[assigned] tmp
   kernel/sched/fair.c:6176:17: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c: note: in included file:
   kernel/sched/sched.h:2171:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2171:9: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2171:9: sparse:    struct task_struct *
   kernel/sched/sched.h:2013:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2013:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2013:25: sparse:    struct task_struct *
   kernel/sched/sched.h:2013:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2013:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2013:25: sparse:    struct task_struct *

vim +4049 kernel/sched/fair.c

7f65ea42eb00bc Patrick Bellasi  2018-03-09  4046  
7f65ea42eb00bc Patrick Bellasi  2018-03-09  4047  static inline unsigned long _task_util_est(struct task_struct *p)
7f65ea42eb00bc Patrick Bellasi  2018-03-09  4048  {
7f65ea42eb00bc Patrick Bellasi  2018-03-09 @4049  	struct util_est ue = READ_ONCE(p->se.avg.util_est);
7f65ea42eb00bc Patrick Bellasi  2018-03-09  4050  
68d7a190682aa4 Dietmar Eggemann 2021-06-02  4051  	return max(ue.ewma, (ue.enqueued & ~UTIL_AVG_UNCHANGED));
7f65ea42eb00bc Patrick Bellasi  2018-03-09  4052  }
7f65ea42eb00bc Patrick Bellasi  2018-03-09  4053  

:::::: The code at line 4049 was first introduced by commit
:::::: 7f65ea42eb00bc902f1c37a71e984e4f4064cfa9 sched/fair: Add util_est on top of PELT

:::::: TO: Patrick Bellasi <patrick.bellasi@arm.com>
:::::: CC: Ingo Molnar <mingo@kernel.org>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

             reply	other threads:[~2023-04-11 13:36 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-11 13:36 kernel test robot [this message]
  -- strict thread matches above, loose matches on Subject: below --
2023-05-20 21:43 kernel/sched/fair.c:4049:30: sparse: sparse: cast to non-scalar kernel test robot
2023-02-17 10:59 kernel test robot
2023-01-18 19:56 kernel test robot
2023-01-18 16:39 kernel test robot
2023-01-18  8:57 kernel test robot
2022-11-24 14:00 kernel test robot
2022-08-30 16:10 kernel test robot

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