tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 1eb586a9782cde8e5091b9de74603e0a8386b09e commit: acb1a1ec810808c964c21524c1c521c3f75d2f2d [9279/9689] memcg: mm_update_next_owner: kill the "retry" logic config: i386-randconfig-061-20240629 compiler: gcc-9 (Ubuntu 9.5.0-4ubuntu2) 9.5.0 reproduce (this is a W=1 build): 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 | Closes: https://lore.kernel.org/oe-kbuild-all/202406300417.JH4krMMP-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) kernel/exit.c:336:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/exit.c:336:37: sparse: expected struct task_struct *tsk kernel/exit.c:336:37: sparse: got struct task_struct [noderef] __rcu *real_parent kernel/exit.c:339:32: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *task @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/exit.c:339:32: sparse: expected struct task_struct *task kernel/exit.c:339:32: sparse: got struct task_struct [noderef] __rcu *real_parent kernel/exit.c:340:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *task @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/exit.c:340:35: sparse: expected struct task_struct *task kernel/exit.c:340:35: sparse: got struct task_struct [noderef] __rcu *real_parent kernel/exit.c:385:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/exit.c:385:24: sparse: expected struct task_struct *parent kernel/exit.c:385:24: sparse: got struct task_struct [noderef] __rcu *real_parent kernel/exit.c:412:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/exit.c:412:27: sparse: expected struct spinlock [usertype] *lock kernel/exit.c:412:27: sparse: got struct spinlock [noderef] __rcu * kernel/exit.c:415:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/exit.c:415:29: sparse: expected struct spinlock [usertype] *lock kernel/exit.c:415:29: sparse: got struct spinlock [noderef] __rcu * >> kernel/exit.c:451:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct [noderef] __rcu *volatile @@ got struct task_struct *tsk @@ kernel/exit.c:451:17: sparse: expected struct task_struct [noderef] __rcu *volatile kernel/exit.c:451:17: sparse: got struct task_struct *tsk kernel/exit.c:470:23: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/exit.c:470:23: sparse: struct task_struct [noderef] __rcu * kernel/exit.c:470:23: sparse: struct task_struct * kernel/exit.c:637:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *reaper @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/exit.c:639:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *reaper @@ got struct task_struct [noderef] __rcu *real_parent @@ kernel/exit.c:799:45: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sighand_struct *sighand @@ got struct sighand_struct [noderef] __rcu *sighand @@ kernel/exit.c:1006:63: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sighand_struct *const sighand @@ got struct sighand_struct [noderef] __rcu *sighand @@ kernel/exit.c:1251:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/exit.c:1266:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/exit.c:1317:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/exit.c:1320:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/exit.c:1326:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct spinlock [usertype] *lock @@ got struct spinlock [noderef] __rcu * @@ kernel/exit.c:1502:68: sparse: sparse: incompatible types in comparison expression (different base types): kernel/exit.c:1502:68: sparse: void * kernel/exit.c:1502:68: sparse: struct task_struct [noderef] __rcu * kernel/exit.c:1531:25: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *parent @@ got struct task_struct [noderef] __rcu * @@ kernel/exit.c:1531:25: sparse: expected struct task_struct *parent kernel/exit.c:1531:25: sparse: got struct task_struct [noderef] __rcu * kernel/exit.c:455:20: sparse: sparse: context imbalance in 'try_to_set_owner' - unexpected unlock kernel/exit.c:494:9: sparse: sparse: dereference of noderef expression kernel/exit.c:462:6: sparse: sparse: context imbalance in 'mm_update_next_owner' - different lock contexts for basic block kernel/exit.c: note: in included file: include/linux/ptrace.h:92:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p1 @@ got struct task_struct [noderef] __rcu *real_parent @@ include/linux/ptrace.h:92:40: sparse: expected struct task_struct *p1 include/linux/ptrace.h:92:40: sparse: got struct task_struct [noderef] __rcu *real_parent include/linux/ptrace.h:92:60: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p2 @@ got struct task_struct [noderef] __rcu *parent @@ include/linux/ptrace.h:92:60: sparse: expected struct task_struct *p2 include/linux/ptrace.h:92:60: sparse: got struct task_struct [noderef] __rcu *parent include/linux/ptrace.h:92:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p1 @@ got struct task_struct [noderef] __rcu *real_parent @@ include/linux/ptrace.h:92:40: sparse: expected struct task_struct *p1 include/linux/ptrace.h:92:40: sparse: got struct task_struct [noderef] __rcu *real_parent include/linux/ptrace.h:92:60: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p2 @@ got struct task_struct [noderef] __rcu *parent @@ include/linux/ptrace.h:92:60: sparse: expected struct task_struct *p2 include/linux/ptrace.h:92:60: sparse: got struct task_struct [noderef] __rcu *parent kernel/exit.c: note: in included file (through include/linux/sched/signal.h, include/linux/rcuwait.h, include/linux/percpu-rwsem.h, ...): include/linux/sched/task.h:118:21: sparse: sparse: context imbalance in 'wait_task_zombie' - unexpected unlock include/linux/sched/task.h:118:21: sparse: sparse: context imbalance in 'wait_task_stopped' - unexpected unlock include/linux/sched/task.h:118:21: sparse: sparse: context imbalance in 'wait_task_continued' - unexpected unlock kernel/exit.c: note: in included file: include/linux/ptrace.h:92:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p1 @@ got struct task_struct [noderef] __rcu *real_parent @@ include/linux/ptrace.h:92:40: sparse: expected struct task_struct *p1 include/linux/ptrace.h:92:40: sparse: got struct task_struct [noderef] __rcu *real_parent include/linux/ptrace.h:92:60: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p2 @@ got struct task_struct [noderef] __rcu *parent @@ include/linux/ptrace.h:92:60: sparse: expected struct task_struct *p2 include/linux/ptrace.h:92:60: sparse: got struct task_struct [noderef] __rcu *parent kernel/exit.c:1567:6: sparse: sparse: context imbalance in '__do_wait' - wrong count at exit vim +451 kernel/exit.c 440 441 #ifdef CONFIG_MEMCG 442 /* drops tasklist_lock if succeeds */ 443 static bool try_to_set_owner(struct task_struct *tsk, struct mm_struct *mm) 444 { 445 bool ret = false; 446 447 task_lock(tsk); 448 if (likely(tsk->mm == mm)) { 449 /* tsk can't pass exit_mm/exec_mmap and exit */ 450 read_unlock(&tasklist_lock); > 451 WRITE_ONCE(mm->owner, tsk); 452 lru_gen_migrate_mm(mm); 453 ret = true; 454 } 455 task_unlock(tsk); 456 return ret; 457 } 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