tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.14 head: 1668a603a8f736f3783d62a0d59f1e1f087df631 commit: 1668a603a8f736f3783d62a0d59f1e1f087df631 [20/20] FIXUP: BACKPORT: FROMLIST: mm: multigenerational lru: aging config: sparc-randconfig-s032-20210722 (attached as .config) compiler: sparc64-linux-gcc (GCC) 10.3.0 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: v0.6.3-341-g8af24329-dirty git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-4.14 git checkout 1668a603a8f736f3783d62a0d59f1e1f087df631 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=sparc 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 >>) mm/vmscan.c:2824:9: sparse: expected struct lockdep_map *lock mm/vmscan.c:2824:9: sparse: got struct lockdep_map [noderef] <asn:4> * mm/vmscan.c:2830:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] <asn:4> *owner @@ mm/vmscan.c:2830:40: sparse: expected struct task_struct *p mm/vmscan.c:2830:40: sparse: got struct task_struct [noderef] <asn:4> *owner mm/vmscan.c:1835:48: sparse: sparse: context imbalance in 'putback_inactive_pages' - unexpected unlock mm/vmscan.c:2069:48: sparse: sparse: context imbalance in 'move_active_pages_to_lru' - unexpected unlock mm/vmscan.c:6693:48: sparse: sparse: context imbalance in 'check_move_unevictable_pages' - unexpected unlock In file included from include/linux/workqueue.h:9, from include/linux/srcu.h:34, from include/linux/notifier.h:16, from include/linux/memory_hotplug.h:7, from include/linux/mmzone.h:913, from include/linux/gfp.h:6, from include/linux/mm.h:10, from mm/vmscan.c:17: include/linux/timer.h: In function 'timer_setup': include/linux/timer.h:179:23: warning: cast between incompatible function types from 'void (*)(struct timer_list *)' to 'void (*)(long unsigned int)' [-Wcast-function-type] 179 | __setup_timer(timer, (TIMER_FUNC_TYPE)callback, | ^ include/linux/timer.h:144:25: note: in definition of macro '__setup_timer' 144 | (_timer)->function = (_fn); 24- | ^~~ In file included from include/linux/cpuset.h:13, from mm/vmscan.c:38: include/linux/sched/topology.h: At top level: include/linux/sched/topology.h:197:1: warning: type qualifiers ignored on function return type [-Wignored-qualifiers] 197 | const struct sched_group_energy * const(*sched_domain_energy_f)(int cpu); | ^~~~~ vim +2824 mm/vmscan.c 3daaf42f537dcb Yu Zhao 2021-04-05 2819 3daaf42f537dcb Yu Zhao 2021-04-05 2820 void lru_gen_migrate_mm(struct mm_struct *mm) 3daaf42f537dcb Yu Zhao 2021-04-05 2821 { 3daaf42f537dcb Yu Zhao 2021-04-05 2822 struct mem_cgroup *memcg; 3daaf42f537dcb Yu Zhao 2021-04-05 2823 3daaf42f537dcb Yu Zhao 2021-04-05 @2824 lockdep_assert_held(&mm->owner->alloc_lock); 3daaf42f537dcb Yu Zhao 2021-04-05 2825 3daaf42f537dcb Yu Zhao 2021-04-05 2826 if (mem_cgroup_disabled()) 3daaf42f537dcb Yu Zhao 2021-04-05 2827 return; 3daaf42f537dcb Yu Zhao 2021-04-05 2828 3daaf42f537dcb Yu Zhao 2021-04-05 2829 rcu_read_lock(); 3daaf42f537dcb Yu Zhao 2021-04-05 2830 memcg = mem_cgroup_from_task(mm->owner); 3daaf42f537dcb Yu Zhao 2021-04-05 2831 rcu_read_unlock(); 3daaf42f537dcb Yu Zhao 2021-04-05 2832 if (memcg == mm->lrugen.memcg) 3daaf42f537dcb Yu Zhao 2021-04-05 2833 return; 3daaf42f537dcb Yu Zhao 2021-04-05 2834 3daaf42f537dcb Yu Zhao 2021-04-05 2835 VM_BUG_ON_MM(!mm->lrugen.memcg, mm); 3daaf42f537dcb Yu Zhao 2021-04-05 2836 VM_BUG_ON_MM(list_empty(&mm->lrugen.list), mm); 3daaf42f537dcb Yu Zhao 2021-04-05 2837 3daaf42f537dcb Yu Zhao 2021-04-05 2838 lru_gen_del_mm(mm); 3daaf42f537dcb Yu Zhao 2021-04-05 2839 lru_gen_add_mm(mm); 3daaf42f537dcb Yu Zhao 2021-04-05 2840 } 3daaf42f537dcb Yu Zhao 2021-04-05 2841 :::::: The code at line 2824 was first introduced by commit :::::: 3daaf42f537dcb7ac157c4922dc2746897cd3deb BACKPORT: FROMLIST: mm: multigenerational lru: mm_struct list :::::: TO: Yu Zhao <yuzhao(a)google.com&gt; :::::: CC: Commit Bot <commit-bot(a)chromium.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org