[tglx-devel:timers/posix 104/107] kernel/signal.c:2002:39: error: 'POSIX_TIMER_REQUEUE_PENDING' undeclared

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git timers/posix
head:   7dff83f0eba841872222db257facf9efac85dd2e
commit: a4329b49227494eab8b0dc4220b65c9c341ef3f9 [104/107] signal: Queue ignored posixtimers on ignore list
config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20241103/202411030744.COM9Qydr-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241103/202411030744.COM9Qydr-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411030744.COM9Qydr-lkp@intel.com/

All errors (new ones prefixed by >>):

   kernel/signal.c: In function 'posixtimer_send_sigqueue':
>> kernel/signal.c:2002:39: error: 'POSIX_TIMER_REQUEUE_PENDING' undeclared (first use in this function)
    2002 |                 if (tmr->it_status == POSIX_TIMER_REQUEUE_PENDING) {
         |                                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   kernel/signal.c:2002:39: note: each undeclared identifier is reported only once for each function it appears in
>> kernel/signal.c:2014:58: error: passing argument 2 of 'posixtimer_sig_ignore' from incompatible pointer type [-Werror=incompatible-pointer-types]
    2014 |                                 posixtimer_sig_ignore(t, tmr);
         |                                                          ^~~
         |                                                          |
         |                                                          struct k_itimer *
   kernel/signal.c:734:84: note: expected 'struct sigqueue *' but argument is of type 'struct k_itimer *'
     734 | static inline void posixtimer_sig_ignore(struct task_struct *tsk, struct sigqueue *q);
         |                                                                   ~~~~~~~~~~~~~~~~~^
   kernel/signal.c: In function 'posixtimer_sig_ignore':
   kernel/signal.c:2059:31: error: 'POSIX_TIMER_REQUEUE_PENDING' undeclared (first use in this function)
    2059 |         if (tmr->it_status == POSIX_TIMER_REQUEUE_PENDING)
         |                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/POSIX_TIMER_REQUEUE_PENDING +2002 kernel/signal.c

  1970	
  1971	int posixtimer_send_sigqueue(struct k_itimer *tmr)
  1972	{
  1973		struct sigqueue *q = &tmr->sigq;
  1974		int sig = q->info.si_signo;
  1975		struct task_struct *t;
  1976		unsigned long flags;
  1977		int result;
  1978	
  1979		guard(rcu)();
  1980	
  1981		t = posixtimer_get_target(tmr);
  1982		if (!t)
  1983			return -1;
  1984	
  1985		if (!likely(lock_task_sighand(t, &flags)))
  1986			return -1;
  1987	
  1988		/*
  1989		 * Update @tmr::sigqueue_seq for posix timer signals with sighand
  1990		 * locked to prevent a race against dequeue_signal().
  1991		 */
  1992		tmr->it_sigqueue_seq = tmr->it_signal_seq;
  1993	
  1994		if (!prepare_signal(sig, t, false)) {
  1995			result = TRACE_SIGNAL_IGNORED;
  1996	
  1997			/* Paranoia check. Try to survive. */
  1998			if (WARN_ON_ONCE(!list_empty(&q->list)))
  1999				goto out;
  2000	
  2001			/* Periodic timers with SIG_IGN are queued on the ignored list */
> 2002			if (tmr->it_status == POSIX_TIMER_REQUEUE_PENDING) {
  2003				/*
  2004				 * Already queued means the timer was rearmed after
  2005				 * the previous expiry got it on the ignore list.
  2006				 * Nothing to do for that case.
  2007				 */
  2008				if (hlist_unhashed(&tmr->ignored_list)) {
  2009					/*
  2010					 * Take a signal reference and queue it on
  2011					 * the ignored list.
  2012					 */
  2013					posixtimer_sigqueue_getref(q);
> 2014					posixtimer_sig_ignore(t, tmr);
  2015				}
  2016			} else if (!hlist_unhashed(&tmr->ignored_list)) {
  2017				/*
  2018				 * Covers the case where a timer was periodic and
  2019				 * then signal was ignored. Then it was rearmed as
  2020				 * oneshot timer. The previous signal is invalid
  2021				 * now, and the oneshot signal has to be dropped.
  2022				 * Remove it from the ignored list and drop the
  2023				 * reference count as the signal is not longer
  2024				 * queued.
  2025				 */
  2026				hlist_del_init(&tmr->ignored_list);
  2027				posixtimer_putref(tmr);
  2028			}
  2029			goto out;
  2030		}
  2031	
  2032		/* This should never happen and leaks a reference count */
  2033		if (WARN_ON_ONCE(!hlist_unhashed(&tmr->ignored_list)))
  2034			hlist_del_init(&tmr->ignored_list);
  2035	
  2036		if (unlikely(!list_empty(&q->list))) {
  2037			/* This holds a reference count already */
  2038			result = TRACE_SIGNAL_ALREADY_PENDING;
  2039			goto out;
  2040		}
  2041	
  2042		posixtimer_sigqueue_getref(q);
  2043		posixtimer_queue_sigqueue(q, t, tmr->it_pid_type);
  2044		result = TRACE_SIGNAL_DELIVERED;
  2045	out:
  2046		trace_signal_generate(sig, &q->info, t, tmr->it_pid_type != PIDTYPE_PID, result);
  2047		unlock_task_sighand(t, &flags);
  2048		return 0;
  2049	}
  2050	

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