[openeuler:openEuler-1.0-LTS 22104/22139] fs/proc/array.c:614:9: warning: 'gtime' may be used uninitialized

19 Apr 2024

      tree:   https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS
head:   cc163ca2127ce6ebda08bc76d555cdabfb19ef65
commit: 4f8730514c736b09927b1b9c08ad946b70639545 [22104/22139] fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
config: x86_64-buildonly-randconfig-005-20240418 (https://download.01.org/0day-ci/archive/20240419/202404190005.E7Ruoi45-lkp@i...)
compiler: gcc-12 (Ubuntu 12.3.0-9ubuntu2) 12.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240419/202404190005.E7Ruoi45-lkp@i...)

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/202404190005.E7Ruoi45-lkp@intel.com/

Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings

All warnings (new ones prefixed by >>):

   In file included from include/linux/sched/signal.h:7,
                    from include/linux/sched/cputime.h:5,
                    from fs/proc/array.c:68:
   include/linux/signal.h: In function 'sigemptyset':
   include/linux/signal.h:180:29: warning: this statement may fall through [-Wimplicit-fallthrough=]
     180 |         case 2: set->sig[1] = 0;
         |                 ~~~~~~~~~~~~^~~
   include/linux/signal.h:181:9: note: here
     181 |         case 1: set->sig[0] = 0;
         |         ^~~~
   fs/proc/array.c: In function 'do_task_stat':
...
...
fs/proc/array.c:614:9: warning: 'gtime' may be used uninitialized [-Wmaybe-uninitialized]
     614 |         seq_put_decimal_ull(m, " ", nsec_to_clock_t(gtime));
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   fs/proc/array.c:447:51: note: 'gtime' was declared here
     447 |         u64 cutime, cstime, cgtime, utime, stime, gtime;
         |                                                   ^~~~~
fs/proc/array.c:567:9: warning: 'maj_flt' may be used uninitialized [-Wmaybe-uninitialized]
     567 |         seq_put_decimal_ull(m, " ", maj_flt);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   fs/proc/array.c:446:52: note: 'maj_flt' was declared here
     446 |         unsigned long cmin_flt, cmaj_flt, min_flt, maj_flt;
         |                                                    ^~~~~~~
fs/proc/array.c:565:9: warning: 'min_flt' may be used uninitialized [-Wmaybe-uninitialized]
     565 |         seq_put_decimal_ull(m, " ", min_flt);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   fs/proc/array.c:446:43: note: 'min_flt' was declared here
     446 |         unsigned long cmin_flt, cmaj_flt, min_flt, maj_flt;
         |                                           ^~~~~~~
vim +/gtime +614 fs/proc/array.c

^1da177e4c3f41 Linus Torvalds ee992744ea53db Eric W. Biederman ee992744ea53db Eric W. Biederman ^1da177e4c3f41 Linus Torvalds b2f73922d11968 Ingo Molnar 715be1fce0d964 Jan Engelhardt ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds a593d6edeb0a5a Oleg Nesterov ^1da177e4c3f41 Linus Torvalds f83ce3e6b02d5e Jake Edge ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov ^1da177e4c3f41 Linus Torvalds a593d6edeb0a5a Oleg Nesterov 08132d3d089b9a Eric W. Biederman 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds caaee6234d05a5 Jann Horn ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 0a1eb2d474edfe Andy Lutomirski 0a1eb2d474edfe Andy Lutomirski 0a1eb2d474edfe Andy Lutomirski 0a1eb2d474edfe Andy Lutomirski fd7d56270b526c John Ogness fd7d56270b526c John Ogness fd7d56270b526c John Ogness fd7d56270b526c John Ogness 0a1eb2d474edfe Andy Lutomirski ef7622dbb87776 John Ogness 8bb2ee192e482c Alexey Dobriyan fd7d56270b526c John Ogness fd7d56270b526c John Ogness 8bb2ee192e482c Alexey Dobriyan 8bb2ee192e482c Alexey Dobriyan fd7d56270b526c John Ogness f83ce3e6b02d5e Jake Edge ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 3cfd0885fac78c Alan Cox a593d6edeb0a5a Oleg Nesterov 915935041281c6 Oleg Nesterov 5d0fdf1e018998 Alan Cox 5d0fdf1e018998 Alan Cox 5d0fdf1e018998 Alan Cox 915935041281c6 Oleg Nesterov a593d6edeb0a5a Oleg Nesterov a593d6edeb0a5a Oleg Nesterov 7e49827cc937a7 Oleg Nesterov ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 6aa7de059173a9 Mark Rutland a593d6edeb0a5a Oleg Nesterov ^1da177e4c3f41 Linus Torvalds 08132d3d089b9a Eric W. Biederman 08132d3d089b9a Eric W. Biederman ^1da177e4c3f41 Linus Torvalds a593d6edeb0a5a Oleg Nesterov b488893a390edf Pavel Emelyanov a98fdcef941e10 Oleg Nesterov b488893a390edf Pavel Emelyanov a593d6edeb0a5a Oleg Nesterov a593d6edeb0a5a Oleg Nesterov ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds f83ce3e6b02d5e Jake Edge ^1da177e4c3f41 Linus Torvalds f59c1abf66d159 Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov 4f8730514c736b Oleg Nesterov f59c1abf66d159 Oleg Nesterov f59c1abf66d159 Oleg Nesterov f59c1abf66d159 Oleg Nesterov f59c1abf66d159 Oleg Nesterov ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 6fac4829ce0ef9 Frederic ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 57e0be041d9e21 Thomas Gleixner ^1da177e4c3f41 Linus Torvalds d0f02231222b31 Andrei Vagin d0f02231222b31 Andrei Vagin 88b72b31e15f9d Tejun Heo d0f02231222b31 Andrei Vagin d0f02231222b31 Andrei Vagin 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 5613fda9a503cd Frederic 5613fda9a503cd Frederic 5613fda9a503cd Frederic 5613fda9a503cd Frederic 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches b2f73922d11968 Ingo Molnar b2f73922d11968 Ingo Molnar b2f73922d11968 Ingo Molnar b2f73922d11968 Ingo Molnar b2f73922d11968 Ingo Molnar b2f73922d11968 Ingo Molnar b2f73922d11968 Ingo Molnar b2f73922d11968 Ingo Molnar b2f73922d11968 Ingo Molnar b2f73922d11968 Ingo Molnar b2f73922d11968 Ingo Molnar b2f73922d11968 Ingo Molnar b2f73922d11968 Ingo Molnar 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 16a6d9be90373f Frederic 16a6d9be90373f Frederic 5b172087f99189 Cyrill Gorcunov 5b172087f99189 Cyrill Gorcunov 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 75ba1d07fd6a49 Joe Perches 5b172087f99189 Cyrill Gorcunov 75ba1d07fd6a49 Joe Perches 5b172087f99189 Cyrill Gorcunov 5b172087f99189 Cyrill Gorcunov 08132d3d089b9a Eric W. Biederman 5b172087f99189 Cyrill Gorcunov 75ba1d07fd6a49 Joe Perches 5b172087f99189 Cyrill Gorcunov bda7bad62bc4c4 KAMEZAWA Hiroyuki ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ee992744ea53db Eric W. Biederman ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds

:::::: The code at :::::: 16a6d9be90373fb0b5218

:::::: TO: Frederic :::::: CC: Ingo Molnar

-- 0-DAY CI Kernel Test Service exit_code; 2024-04-13  451  	struct signal_struct *sig = task->signal; 2024-04-13  452  	unsigned int seq = 1; 2005-04-16  453 2005-04-16  454  	state = *get_task_state(task); 2005-04-16  455  	vsize = eip = esp = 0; 2016-01-20  456  	permitted = ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS | PTRACE_MODE_NOAUDIT); 2005-04-16  457  	mm = get_task_mm(task); 2005-04-16  458  	if (mm) { 2005-04-16  459  		vsize = task_vsize(mm); 2016-09-30  460  		/* 2016-09-30  461  		 * esp and eip are intentionally zeroed out.  There is no 2016-09-30  462  		 * non-racy way to read them without freezing the task. 2016-09-30  463  		 * Programs that need reliable values can use ptrace(2). 2017-09-14  464  		 * 2017-09-14  465  		 * The only exception is if the task is core dumping because 2017-09-14  466  		 * a program is not able to use ptrace(2) in that case. It is 2017-09-14  467  		 * safe because the task has stopped executing permanently. 2016-09-30  468  		 */ 2019-07-04  469  		if (permitted && (task->flags & (PF_EXITING|PF_DUMPCORE))) { 2018-01-18  470  			if (try_get_task_stack(task)) { 2017-09-14  471  				eip = KSTK_EIP(task); 2017-09-14  472  				esp = KSTK_ESP(task); 2018-01-18  473  				put_task_stack(task); 2018-01-18  474  			} 2017-09-14  475  		} 2009-05-04  476  	} 2005-04-16  477 2005-04-16  478  	sigemptyset(&sigign); 2005-04-16  479  	sigemptyset(&sigcatch); 2006-09-29  480 2006-10-02  481  	if (lock_task_sighand(task, &flags)) { 2006-12-08  482  		if (sig->tty) { 2008-04-30  483  			struct pid *pgrp = tty_get_pgrp(sig->tty); 2008-04-30  484  			tty_pgrp = pid_nr_ns(pgrp, ns); 2008-04-30  485  			put_pid(pgrp); 2006-12-08  486  			tty_nr = new_encode_dev(tty_devnum(sig->tty)); 2006-10-02  487  		} 2006-10-02  488 2010-05-26  489  		num_threads = get_nr_threads(task); 2005-04-16  490  		collect_sigign_sigcatch(task, &sigign, &sigcatch); 2005-04-16  491 2017-10-23  492  		rsslim = READ_ONCE(sig->rlim[RLIMIT_RSS].rlim_cur); 2006-10-02  493 2005-04-16  494  		if (whole) { 2024-04-13  495  			if (sig->flags & (SIGNAL_GROUP_EXIT | SIGNAL_STOP_STOPPED)) 2024-04-13  496  				exit_code = sig->group_exit_code; 2005-04-16  497  		} 2006-10-02  498 2007-10-18  499  		sid = task_session_nr_ns(task, ns); 2008-01-15  500  		ppid = task_tgid_nr_ns(task->real_parent, ns); 2007-10-18  501  		pgid = task_pgrp_nr_ns(task, ns); 2006-10-02  502 2006-10-02  503  		unlock_task_sighand(task, &flags); 2005-04-16  504  	} 2005-04-16  505 2009-05-04  506  	if (permitted && (!whole || num_threads < 2)) 2005-04-16  507  		wchan = get_wchan(task); 2024-04-13  508 2024-04-13  509  	do { 2024-04-13  510  		seq++; /* 2 on the 1st/lockless path, otherwise odd */ 2024-04-13  511  		flags = read_seqbegin_or_lock_irqsave(&sig->stats_lock, &seq); 2024-04-13  512 2024-04-13  513  		cmin_flt = sig->cmin_flt; 2024-04-13  514  		cmaj_flt = sig->cmaj_flt; 2024-04-13  515  		cutime = sig->cutime; 2024-04-13  516  		cstime = sig->cstime; 2024-04-13  517  		cgtime = sig->cgtime; 2024-04-13  518 2024-04-13  519  		if (whole) { 2024-04-13  520  			struct task_struct *t; 2024-04-13  521 2024-04-13  522  			min_flt = sig->min_flt; 2024-04-13  523  			maj_flt = sig->maj_flt; 2024-04-13  524  			gtime = sig->gtime; 2024-04-13  525 2024-04-13  526  			rcu_read_lock(); 2024-04-13  527  			__for_each_thread(sig, t) { 2024-04-13  528  				min_flt += t->min_flt; 2024-04-13  529  				maj_flt += t->maj_flt; 2024-04-13  530  				gtime += task_gtime(t); 2024-04-13  531  			} 2024-04-13  532  			rcu_read_unlock(); 2024-04-13  533  		} 2024-04-13  534  	} while (need_seqretry(&sig->stats_lock, seq)); 2024-04-13  535  	done_seqretry_irqrestore(&sig->stats_lock, seq, flags); 2024-04-13  536 2024-04-13  537  	if (whole) { 2024-04-13  538  		thread_group_cputime_adjusted(task, &utime, &stime); 2024-04-13  539  	} else { 2024-04-13  540  		task_cputime_adjusted(task, &utime, &stime); 2005-04-16  541  		min_flt = task->min_flt; 2005-04-16  542  		maj_flt = task->maj_flt; Weisbecker 2012-11-13  543  		gtime = task_gtime(task); 2005-04-16  544  	} 2005-04-16  545 2005-04-16  546  	/* scale priority and nice values from timeslices to -20..20 */ 2005-04-16  547  	/* to make it look like a "normal" Unix priority/nice value  */ 2005-04-16  548  	priority = task_prio(task); 2005-04-16  549  	nice = task_nice(task); 2005-04-16  550 2005-04-16  551  	/* convert nsec -> ticks */ 2014-07-16  552  	start_time = nsec_to_clock_t(task->real_start_time); 2005-04-16  553 2018-04-10  554  	seq_put_decimal_ull(m, "", pid_nr_ns(pid, ns)); 2018-04-10  555  	seq_puts(m, " ("); 2018-05-18  556  	proc_task_name(m, task, false); 2018-04-10  557  	seq_puts(m, ") "); 2018-04-10  558  	seq_putc(m, state); 2016-10-07  559  	seq_put_decimal_ll(m, " ", ppid); 2016-10-07  560  	seq_put_decimal_ll(m, " ", pgid); 2016-10-07  561  	seq_put_decimal_ll(m, " ", sid); 2016-10-07  562  	seq_put_decimal_ll(m, " ", tty_nr); 2016-10-07  563  	seq_put_decimal_ll(m, " ", tty_pgrp); 2016-10-07  564  	seq_put_decimal_ull(m, " ", task->flags); 2016-10-07 @565  	seq_put_decimal_ull(m, " ", min_flt); 2016-10-07  566  	seq_put_decimal_ull(m, " ", cmin_flt); 2016-10-07 @567  	seq_put_decimal_ull(m, " ", maj_flt); 2016-10-07  568  	seq_put_decimal_ull(m, " ", cmaj_flt); Weisbecker 2017-01-31  569  	seq_put_decimal_ull(m, " ", nsec_to_clock_t(utime)); Weisbecker 2017-01-31  570  	seq_put_decimal_ull(m, " ", nsec_to_clock_t(stime)); Weisbecker 2017-01-31  571  	seq_put_decimal_ll(m, " ", nsec_to_clock_t(cutime)); Weisbecker 2017-01-31  572  	seq_put_decimal_ll(m, " ", nsec_to_clock_t(cstime)); 2016-10-07  573  	seq_put_decimal_ll(m, " ", priority); 2016-10-07  574  	seq_put_decimal_ll(m, " ", nice); 2016-10-07  575  	seq_put_decimal_ll(m, " ", num_threads); 2016-10-07  576  	seq_put_decimal_ull(m, " ", 0); 2016-10-07  577  	seq_put_decimal_ull(m, " ", start_time); 2016-10-07  578  	seq_put_decimal_ull(m, " ", vsize); 2016-10-07  579  	seq_put_decimal_ull(m, " ", mm ? get_mm_rss(mm) : 0); 2016-10-07  580  	seq_put_decimal_ull(m, " ", rsslim); 2016-10-07  581  	seq_put_decimal_ull(m, " ", mm ? (permitted ? mm->start_code : 1) : 0); 2016-10-07  582  	seq_put_decimal_ull(m, " ", mm ? (permitted ? mm->end_code : 1) : 0); 2016-10-07  583  	seq_put_decimal_ull(m, " ", (permitted && mm) ? mm->start_stack : 0); 2016-10-07  584  	seq_put_decimal_ull(m, " ", esp); 2016-10-07  585  	seq_put_decimal_ull(m, " ", eip); 2005-04-16  586  	/* The signal information here is obsolete. 2005-04-16  587  	 * It must be decimal for Linux 2.0 compatibility. 2005-04-16  588  	 * Use /proc/#/status for real-time signals. 2005-04-16  589  	 */ 2016-10-07  590  	seq_put_decimal_ull(m, " ", task->pending.signal.sig[0] & 0x7fffffffUL); 2016-10-07  591  	seq_put_decimal_ull(m, " ", task->blocked.sig[0] & 0x7fffffffUL); 2016-10-07  592  	seq_put_decimal_ull(m, " ", sigign.sig[0] & 0x7fffffffUL); 2016-10-07  593  	seq_put_decimal_ull(m, " ", sigcatch.sig[0] & 0x7fffffffUL); 2015-09-30  594 2015-09-30  595  	/* 2015-09-30  596  	 * We used to output the absolute kernel address, but that's an 2015-09-30  597  	 * information leak - so instead we show a 0/1 flag here, to signal 2015-09-30  598  	 * to user-space whether there's a wchan field in /proc/PID/wchan. 2015-09-30  599  	 * 2015-09-30  600  	 * This works with older implementations of procps as well. 2015-09-30  601  	 */ 2015-09-30  602  	if (wchan) 2015-09-30  603  		seq_puts(m, " 1"); 2015-09-30  604  	else 2015-09-30  605  		seq_puts(m, " 0"); 2015-09-30  606 2016-10-07  607  	seq_put_decimal_ull(m, " ", 0); 2016-10-07  608  	seq_put_decimal_ull(m, " ", 0); 2016-10-07  609  	seq_put_decimal_ll(m, " ", task->exit_signal); 2016-10-07  610  	seq_put_decimal_ll(m, " ", task_cpu(task)); 2016-10-07  611  	seq_put_decimal_ull(m, " ", task->rt_priority); 2016-10-07  612  	seq_put_decimal_ull(m, " ", task->policy); 2016-10-07  613  	seq_put_decimal_ull(m, " ", delayacct_blkio_ticks(task)); Weisbecker 2017-01-31 @614  	seq_put_decimal_ull(m, " ", nsec_to_clock_t(gtime)); Weisbecker 2017-01-31  615  	seq_put_decimal_ll(m, " ", nsec_to_clock_t(cgtime)); 2012-05-31  616 2012-05-31  617  	if (mm && permitted) { 2016-10-07  618  		seq_put_decimal_ull(m, " ", mm->start_data); 2016-10-07  619  		seq_put_decimal_ull(m, " ", mm->end_data); 2016-10-07  620  		seq_put_decimal_ull(m, " ", mm->start_brk); 2016-10-07  621  		seq_put_decimal_ull(m, " ", mm->arg_start); 2016-10-07  622  		seq_put_decimal_ull(m, " ", mm->arg_end); 2016-10-07  623  		seq_put_decimal_ull(m, " ", mm->env_start); 2016-10-07  624  		seq_put_decimal_ull(m, " ", mm->env_end); 2012-05-31  625  	} else 2016-10-07  626  		seq_puts(m, " 0 0 0 0 0 0 0"); 2012-05-31  627 2012-05-31  628  	if (permitted) 2024-04-13  629  		seq_put_decimal_ll(m, " ", exit_code); 2012-05-31  630  	else 2016-10-07  631  		seq_puts(m, " 0"); 2012-05-31  632 2012-03-23  633  	seq_putc(m, '\n'); 2005-04-16  634  	if (mm) 2005-04-16  635  		mmput(mm); 2008-02-08  636  	return 0; 2005-04-16  637  } 2005-04-16  638 line 614 was first introduced by commit 50cd0185a4d460dd152 sched/cputime: Convert guest time accounting to nsecs (u64) Weisbecker <fweisbec@gmail.com> <mingo@kernel.org> href="https://github.com/intel/lkp-tests/wiki">https://github.com/intel/lkp-tests/wiki

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