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Sun, 24 Apr 2022 21:36:01 +0000 Date: Mon, 25 Apr 2022 05:35:43 +0800 From: kernel test robot To: Ingo Molnar Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org Subject: [mingo-tip:sched/headers 127/2579] kernel/sched/fair.c:918:32: sparse: sparse: cast removes address space '__rcu' of expression Message-ID: <202204250519.sArtxmdn-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers head: 49e1ec6c70a6eb4b7de9250a455b8b63eb42afbe commit: c3b487719a9654b07ba650abe5bf9964e5474b69 [127/2579] headers/deps: Move task_struct::se to per_task() config: i386-randconfig-s001 (https://download.01.org/0day-ci/archive/20220425/202204250519.sArtxmdn-lkp@intel.com/config) compiler: gcc-11 (Debian 11.2.0-20) 11.2.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=c3b487719a9654b07ba650abe5bf9964e5474b69 git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git git fetch --no-tags mingo-tip sched/headers git checkout c3b487719a9654b07ba650abe5bf9964e5474b69 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash kernel/sched/ mm/ net/ipv4/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) >> kernel/sched/fair.c:918:32: sparse: sparse: cast removes address space '__rcu' of expression kernel/sched/fair.c:5053:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/fair.c:5053:22: sparse: struct task_struct [noderef] __rcu * kernel/sched/fair.c:5053:22: sparse: struct task_struct * kernel/sched/fair.c:5579:38: 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:5579:38: sparse: expected struct task_struct *curr kernel/sched/fair.c:5579:38: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/fair.c:7137:38: 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:7137:38: sparse: expected struct task_struct *curr kernel/sched/fair.c:7137:38: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/fair.c:7435:38: 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:7435:38: sparse: expected struct task_struct *curr kernel/sched/fair.c:7435:38: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/fair.c:4693:31: sparse: sparse: marked inline, but without a definition kernel/sched/fair.c: note: in included file: kernel/sched/sched.h:2022:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2022:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2022:25: sparse: struct task_struct * kernel/sched/sched.h:2180:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2180:9: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2180:9: sparse: struct task_struct * kernel/sched/sched.h:2022:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2022:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2022:25: sparse: struct task_struct * kernel/sched/sched.h:2022:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2022:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2022:25: sparse: struct task_struct * vim +/__rcu +918 kernel/sched/fair.c 915 916 static void update_curr_fair(struct rq *rq) 917 { > 918 update_curr(cfs_rq_of(&per_task(rq->curr, se))); 919 } 920 -- 0-DAY CI Kernel Test Service https://01.org/lkp