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Message-ID: <202311302018.WKYWkxBZ-lkp@intel.com>
Date:   Thu, 30 Nov 2023 20:35:07 +0800
From:   kernel test robot <lkp@...el.com>
To:     Huacai Chen <chenhuacai@...ngson.cn>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Jun Yi <yijun@...ngson.cn>
Subject: kernel/fork.c:1647:36: sparse: sparse: incorrect type in argument 2
 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   3b47bc037bd44f142ac09848e8d3ecccc726be99
commit: a275a82dcd4024c75337db15d59ed039c31e21da LoongArch: Use alternative to optimize libraries
date:   12 months ago
config: loongarch-randconfig-r034-20230511 (https://download.01.org/0day-ci/archive/20231130/202311302018.WKYWkxBZ-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20231130/202311302018.WKYWkxBZ-lkp@intel.com/reproduce)

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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311302018.WKYWkxBZ-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   kernel/fork.c:1310:22: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct file *[assigned] old_exe_file @@     got struct file [noderef] __rcu *[assigned] __res @@
   kernel/fork.c:1310:22: sparse:     expected struct file *[assigned] old_exe_file
   kernel/fork.c:1310:22: sparse:     got struct file [noderef] __rcu *[assigned] __res
   kernel/fork.c:1637:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct refcount_struct [usertype] *r @@     got struct refcount_struct [noderef] __rcu * @@
   kernel/fork.c:1637:38: sparse:     expected struct refcount_struct [usertype] *r
   kernel/fork.c:1637:38: sparse:     got struct refcount_struct [noderef] __rcu *
   kernel/fork.c:1646:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *lock @@     got struct spinlock [noderef] __rcu * @@
   kernel/fork.c:1646:31: sparse:     expected struct spinlock [usertype] *lock
   kernel/fork.c:1646:31: sparse:     got struct spinlock [noderef] __rcu *
>> kernel/fork.c:1647:36: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const *__from @@     got struct k_sigaction [noderef] __rcu * @@
   kernel/fork.c:1647:36: sparse:     expected void const *__from
   kernel/fork.c:1647:36: sparse:     got struct k_sigaction [noderef] __rcu *
   kernel/fork.c:1648:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *lock @@     got struct spinlock [noderef] __rcu * @@
   kernel/fork.c:1648:33: sparse:     expected struct spinlock [usertype] *lock
   kernel/fork.c:1648:33: sparse:     got struct spinlock [noderef] __rcu *
   kernel/fork.c:2074:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *lock @@     got struct spinlock [noderef] __rcu * @@
   kernel/fork.c:2074:31: sparse:     expected struct spinlock [usertype] *lock
   kernel/fork.c:2074:31: sparse:     got struct spinlock [noderef] __rcu *
   kernel/fork.c:2078:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *lock @@     got struct spinlock [noderef] __rcu * @@
   kernel/fork.c:2078:33: sparse:     expected struct spinlock [usertype] *lock
   kernel/fork.c:2078:33: sparse:     got struct spinlock [noderef] __rcu *
   kernel/fork.c:2109:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *ptr @@     got unsigned int [noderef] __percpu * @@
   kernel/fork.c:2109:9: sparse:     expected void *ptr
   kernel/fork.c:2109:9: sparse:     got unsigned int [noderef] __percpu *
   kernel/fork.c:2109:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *ptr @@     got unsigned int [noderef] __percpu * @@
   kernel/fork.c:2109:9: sparse:     expected void *ptr
   kernel/fork.c:2109:9: sparse:     got unsigned int [noderef] __percpu *
   kernel/fork.c:2109:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *ptr @@     got unsigned int [noderef] __percpu * @@
   kernel/fork.c:2109:9: sparse:     expected void *ptr
   kernel/fork.c:2109:9: sparse:     got unsigned int [noderef] __percpu *
   kernel/fork.c:2109:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *ptr @@     got unsigned int [noderef] __percpu * @@
   kernel/fork.c:2109:9: sparse:     expected void *ptr
   kernel/fork.c:2109:9: sparse:     got unsigned int [noderef] __percpu *
   kernel/fork.c:2109:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *ptr @@     got int [noderef] __percpu * @@
   kernel/fork.c:2109:9: sparse:     expected void *ptr
   kernel/fork.c:2109:9: sparse:     got int [noderef] __percpu *
   kernel/fork.c:2109:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *ptr @@     got int [noderef] __percpu * @@
   kernel/fork.c:2109:9: sparse:     expected void *ptr
   kernel/fork.c:2109:9: sparse:     got int [noderef] __percpu *
   kernel/fork.c:2109:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *ptr @@     got int [noderef] __percpu * @@
   kernel/fork.c:2109:9: sparse:     expected void *ptr
   kernel/fork.c:2109:9: sparse:     got int [noderef] __percpu *
   kernel/fork.c:2109:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *ptr @@     got int [noderef] __percpu * @@
   kernel/fork.c:2109:9: sparse:     expected void *ptr
   kernel/fork.c:2109:9: sparse:     got int [noderef] __percpu *
   kernel/fork.c:2398:32: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct task_struct [noderef] __rcu *real_parent @@     got struct task_struct *task @@
   kernel/fork.c:2398:32: sparse:     expected struct task_struct [noderef] __rcu *real_parent
   kernel/fork.c:2398:32: sparse:     got struct task_struct *task
   kernel/fork.c:2407:27: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *lock @@     got struct spinlock [noderef] __rcu * @@
   kernel/fork.c:2407:27: sparse:     expected struct spinlock [usertype] *lock
   kernel/fork.c:2407:27: sparse:     got struct spinlock [noderef] __rcu *
   kernel/fork.c:2454:54: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected struct list_head *head @@     got struct list_head [noderef] __rcu * @@
   kernel/fork.c:2454:54: sparse:     expected struct list_head *head
   kernel/fork.c:2454:54: sparse:     got struct list_head [noderef] __rcu *
   kernel/fork.c:2476:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *lock @@     got struct spinlock [noderef] __rcu * @@
   kernel/fork.c:2476:29: sparse:     expected struct spinlock [usertype] *lock
   kernel/fork.c:2476:29: sparse:     got struct spinlock [noderef] __rcu *
   kernel/fork.c:2497:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *lock @@     got struct spinlock [noderef] __rcu * @@
   kernel/fork.c:2497:29: sparse:     expected struct spinlock [usertype] *lock
   kernel/fork.c:2497:29: sparse:     got struct spinlock [noderef] __rcu *
   kernel/fork.c:2524:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct sighand_struct *sighand @@     got struct sighand_struct [noderef] __rcu *sighand @@
   kernel/fork.c:2524:28: sparse:     expected struct sighand_struct *sighand
   kernel/fork.c:2524:28: sparse:     got struct sighand_struct [noderef] __rcu *sighand
   kernel/fork.c:2553:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *lock @@     got struct spinlock [noderef] __rcu * @@
   kernel/fork.c:2553:31: sparse:     expected struct spinlock [usertype] *lock
   kernel/fork.c:2553:31: sparse:     got struct spinlock [noderef] __rcu *
   kernel/fork.c:2555:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *lock @@     got struct spinlock [noderef] __rcu * @@
   kernel/fork.c:2555:33: sparse:     expected struct spinlock [usertype] *lock
   kernel/fork.c:2555:33: sparse:     got struct spinlock [noderef] __rcu *
   kernel/fork.c:2998:24: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct task_struct *[assigned] parent @@     got struct task_struct [noderef] __rcu *real_parent @@
   kernel/fork.c:2998:24: sparse:     expected struct task_struct *[assigned] parent
   kernel/fork.c:2998:24: sparse:     got struct task_struct [noderef] __rcu *real_parent
   kernel/fork.c:3079:43: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct refcount_struct const [usertype] *r @@     got struct refcount_struct [noderef] __rcu * @@
   kernel/fork.c:3079:43: sparse:     expected struct refcount_struct const [usertype] *r
   kernel/fork.c:3079:43: sparse:     got struct refcount_struct [noderef] __rcu *
   kernel/fork.c:2119:22: sparse: sparse: dereference of noderef expression
   kernel/fork.c: note: in included file (through arch/loongarch/include/uapi/asm/bpf_perf_event.h, include/uapi/linux/bpf_perf_event.h, ...):
   include/linux/ptrace.h:210:45: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected struct task_struct *new_parent @@     got struct task_struct [noderef] __rcu *parent @@
   include/linux/ptrace.h:210:45: sparse:     expected struct task_struct *new_parent
   include/linux/ptrace.h:210:45: sparse:     got struct task_struct [noderef] __rcu *parent
   include/linux/ptrace.h:210:62: sparse: sparse: incorrect type in argument 3 (different address spaces) @@     expected struct cred const *ptracer_cred @@     got struct cred const [noderef] __rcu *ptracer_cred @@
   include/linux/ptrace.h:210:62: sparse:     expected struct cred const *ptracer_cred
   include/linux/ptrace.h:210:62: sparse:     got struct cred const [noderef] __rcu *ptracer_cred
   kernel/fork.c:2452:59: sparse: sparse: dereference of noderef expression
   kernel/fork.c:2453:59: sparse: sparse: dereference of noderef expression

vim +1647 kernel/fork.c

a016f3389c0660 JANAK DESAI        2006-02-07  1631  
a39bc51691a0c8 Alexey Dobriyan    2007-10-18  1632  static int copy_sighand(unsigned long clone_flags, struct task_struct *tsk)
^1da177e4c3f41 Linus Torvalds     2005-04-16  1633  {
^1da177e4c3f41 Linus Torvalds     2005-04-16  1634  	struct sighand_struct *sig;
^1da177e4c3f41 Linus Torvalds     2005-04-16  1635  
60348802e9cb13 Zhaolei            2009-01-06  1636  	if (clone_flags & CLONE_SIGHAND) {
d036bda7d0e726 Elena Reshetova    2019-01-18  1637  		refcount_inc(&current->sighand->count);
^1da177e4c3f41 Linus Torvalds     2005-04-16  1638  		return 0;
^1da177e4c3f41 Linus Torvalds     2005-04-16  1639  	}
^1da177e4c3f41 Linus Torvalds     2005-04-16  1640  	sig = kmem_cache_alloc(sighand_cachep, GFP_KERNEL);
0c282b068eb26d Madhuparna Bhowmik 2020-01-27  1641  	RCU_INIT_POINTER(tsk->sighand, sig);
^1da177e4c3f41 Linus Torvalds     2005-04-16  1642  	if (!sig)
^1da177e4c3f41 Linus Torvalds     2005-04-16  1643  		return -ENOMEM;
9d7fb04276481c Peter Zijlstra     2015-06-30  1644  
d036bda7d0e726 Elena Reshetova    2019-01-18  1645  	refcount_set(&sig->count, 1);
06e62a46bbba20 Jann Horn          2018-08-21  1646  	spin_lock_irq(&current->sighand->siglock);
^1da177e4c3f41 Linus Torvalds     2005-04-16 @1647  	memcpy(sig->action, current->sighand->action, sizeof(sig->action));
06e62a46bbba20 Jann Horn          2018-08-21  1648  	spin_unlock_irq(&current->sighand->siglock);
b612e5df4587c9 Christian Brauner  2019-10-14  1649  
b612e5df4587c9 Christian Brauner  2019-10-14  1650  	/* Reset all signal handler not set to SIG_IGN to SIG_DFL. */
b612e5df4587c9 Christian Brauner  2019-10-14  1651  	if (clone_flags & CLONE_CLEAR_SIGHAND)
b612e5df4587c9 Christian Brauner  2019-10-14  1652  		flush_signal_handlers(tsk, 0);
b612e5df4587c9 Christian Brauner  2019-10-14  1653  
^1da177e4c3f41 Linus Torvalds     2005-04-16  1654  	return 0;
^1da177e4c3f41 Linus Torvalds     2005-04-16  1655  }
^1da177e4c3f41 Linus Torvalds     2005-04-16  1656  

:::::: The code at line 1647 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

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

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