On Thu, Aug 18, 2022 at 11:50 AM kernel test robot <lkp@xxxxxxxxx> wrote: > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: 5b6a4bf680d61b1dd26629840f848d0df8983c62 > commit: 37f44f48d52d734fe0879909f5071a6c635d255b [1876/2065] mm: multi-gen LRU: support page table walks > config: sparc64-randconfig-s053-20220818 > compiler: sparc64-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/next/linux-next.git/commit/?id=37f44f48d52d734fe0879909f5071a6c635d255b > git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > git fetch --no-tags linux-next master > git checkout 37f44f48d52d734fe0879909f5071a6c635d255b > # 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=sparc64 SHELL=/bin/bash > > If you fix the issue, kindly add following tag where applicable > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > sparse warnings: (new ones prefixed by >>) > >> mm/vmscan.c:3232:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct lockdep_map const *lock @@ got struct lockdep_map [noderef] __rcu * @@ > mm/vmscan.c:3232:9: sparse: expected struct lockdep_map const *lock > mm/vmscan.c:3232:9: sparse: got struct lockdep_map [noderef] __rcu * ... > vim +3232 mm/vmscan.c > > 3226 > 3227 #ifdef CONFIG_MEMCG > 3228 void lru_gen_migrate_mm(struct mm_struct *mm) > 3229 { > 3230 struct mem_cgroup *memcg; > 3231 > > 3232 lockdep_assert_held(&mm->owner->alloc_lock); ... Thanks. Queued the fix: struct task_struct *task = rcu_dereference_protected(mm->owner, true); lockdep_assert_held(&task->alloc_lock);
