[jirislaby:devel 19/33] drivers/tty/tty_jobctrl.c:81:9: sparse: sparse: incorrect type in argument 1 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel
head:   669a01e6370e97909bed21cbd5f5548ace604a59
commit: 2124d9e4207beb048693453df5a4ca8aa732ee7f [19/33] tty_jobctrl: use guard
config: x86_64-randconfig-123-20260730 (https://download.01.org/0day-ci/archive/20260730/[email protected]/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260730/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

sparse warnings: (new ones prefixed by >>)
>> drivers/tty/tty_jobctrl.c:81:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *_T @@     got struct spinlock [noderef] __rcu * @@
   drivers/tty/tty_jobctrl.c:81:9: sparse:     expected struct spinlock [usertype] *_T
   drivers/tty/tty_jobctrl.c:81:9: sparse:     got struct spinlock [noderef] __rcu *
   drivers/tty/tty_jobctrl.c:124:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *_T @@     got struct spinlock [noderef] __rcu * @@
   drivers/tty/tty_jobctrl.c:124:9: sparse:     expected struct spinlock [usertype] *_T
   drivers/tty/tty_jobctrl.c:124:9: sparse:     got struct spinlock [noderef] __rcu *
   drivers/tty/tty_jobctrl.c:134:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *_T @@     got struct spinlock [noderef] __rcu * @@
   drivers/tty/tty_jobctrl.c:134:9: sparse:     expected struct spinlock [usertype] *_T
   drivers/tty/tty_jobctrl.c:134:9: sparse:     got struct spinlock [noderef] __rcu *
   drivers/tty/tty_jobctrl.c:160:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *_T @@     got struct spinlock [noderef] __rcu * @@
   drivers/tty/tty_jobctrl.c:160:9: sparse:     expected struct spinlock [usertype] *_T
   drivers/tty/tty_jobctrl.c:160:9: sparse:     got struct spinlock [noderef] __rcu *
   drivers/tty/tty_jobctrl.c:198:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *_T @@     got struct spinlock [noderef] __rcu * @@
   drivers/tty/tty_jobctrl.c:198:25: sparse:     expected struct spinlock [usertype] *_T
   drivers/tty/tty_jobctrl.c:198:25: sparse:     got struct spinlock [noderef] __rcu *
   drivers/tty/tty_jobctrl.c:209:51: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *lock @@     got struct spinlock [noderef] __rcu * @@
   drivers/tty/tty_jobctrl.c:209:51: sparse:     expected struct spinlock [usertype] *lock
   drivers/tty/tty_jobctrl.c:209:51: sparse:     got struct spinlock [noderef] __rcu *
   drivers/tty/tty_jobctrl.c:285:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *_T @@     got struct spinlock [noderef] __rcu * @@
   drivers/tty/tty_jobctrl.c:285:17: sparse:     expected struct spinlock [usertype] *_T
   drivers/tty/tty_jobctrl.c:285:17: sparse:     got struct spinlock [noderef] __rcu *
   drivers/tty/tty_jobctrl.c:316:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct spinlock [usertype] *_T @@     got struct spinlock [noderef] __rcu * @@
   drivers/tty/tty_jobctrl.c:316:9: sparse:     expected struct spinlock [usertype] *_T
   drivers/tty/tty_jobctrl.c:316:9: sparse:     got struct spinlock [noderef] __rcu *
   drivers/tty/tty_jobctrl.c:20:41: sparse: sparse: dereference of noderef expression

vim +81 drivers/tty/tty_jobctrl.c

    76	
    77	void proc_clear_tty(struct task_struct *p)
    78	{
    79		struct tty_struct *tty;
    80	
  > 81		scoped_guard(spinlock_irqsave, &p->sighand->siglock) {
    82			tty = p->signal->tty;
    83			p->signal->tty = NULL;
    84		}
    85		tty_kref_put(tty);
    86	}
    87	

--
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