[tip:timers/core 2/2] kernel/time/alarmtimer.c:738:33: error: 'alarm' is a pointer; did you mean to use '->'?

From: kbuild test robot
Date: Thu Mar 29 2018 - 09:27:48 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
head: 5110c037daf437dbc163be5e9be18c8412a798e6
commit: 5110c037daf437dbc163be5e9be18c8412a798e6 [2/2] alarmtimer: Init nanosleep alarm timer on stack
config: i386-randconfig-x013-201812 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
git checkout 5110c037daf437dbc163be5e9be18c8412a798e6
# save the attached .config to linux build tree
make ARCH=i386

All errors (new ones prefixed by >>):

kernel/time/alarmtimer.c: In function 'alarmtimer_do_nsleep':
>> kernel/time/alarmtimer.c:738:33: error: 'alarm' is a pointer; did you mean to use '->'?
destroy_hrtimer_on_stack(&alarm.timer);
^
->

vim +738 kernel/time/alarmtimer.c

714
715 /**
716 * alarmtimer_do_nsleep - Internal alarmtimer nsleep implementation
717 * @alarm: ptr to alarmtimer
718 * @absexp: absolute expiration time
719 *
720 * Sets the alarm timer and sleeps until it is fired or interrupted.
721 */
722 static int alarmtimer_do_nsleep(struct alarm *alarm, ktime_t absexp,
723 enum alarmtimer_type type)
724 {
725 struct restart_block *restart;
726 alarm->data = (void *)current;
727 do {
728 set_current_state(TASK_INTERRUPTIBLE);
729 alarm_start(alarm, absexp);
730 if (likely(alarm->data))
731 schedule();
732
733 alarm_cancel(alarm);
734 } while (alarm->data && !signal_pending(current));
735
736 __set_current_state(TASK_RUNNING);
737
> 738 destroy_hrtimer_on_stack(&alarm.timer);
739
740 if (!alarm->data)
741 return 0;
742
743 if (freezing(current))
744 alarmtimer_freezerset(absexp, type);
745 restart = &current->restart_block;
746 if (restart->nanosleep.type != TT_NONE) {
747 struct timespec64 rmt;
748 ktime_t rem;
749
750 rem = ktime_sub(absexp, alarm_bases[type].gettime());
751
752 if (rem <= 0)
753 return 0;
754 rmt = ktime_to_timespec64(rem);
755
756 return nanosleep_copyout(restart, &rmt);
757 }
758 return -ERESTART_RESTARTBLOCK;
759 }
760

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