bugGNU Accounting Utilities - Bugs: bug #41782, ac: Possible overflow of time_t! ...

 
 

bug #41782: ac: Possible overflow of time_t! Can't continue on March 1st.

Submitter:  Nestor Urquiza <nestoru>
Submitted:  Wed 05 Mar 2014 07:24:49 PM UTC
   
 
Category:  None Severity:  3 - Normal
Item Group:  None Status:  None
Privacy:  Public Assigned to:  None
Open/Closed:  Open
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Wed 05 Mar 2014 07:24:49 PM UTC, original submission:  

On March 1st. we got an alert like the below:

{{{
Cron <root@target-box> test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
/etc/cron.monthly/acct:
ac: Possible overflow of time_t!  Can't continue.
}}}

The issue is replicable:

{{{
$ sudo /etc/cron.monthly/acct
ac: Possible overflow of time_t!  Can't continue.
}}}

Further debugging showed:

{{{
$ ac -f /var/log/wtmp.1
/var/log/wtmp.1:10: problem: update user sampleadmin (for shutdown) with -46 seconds?!
ac: Possible overflow of time_t!  Can't continue.
}}}

If we parse wtmpt.1 with http://www.hcidata.info/wtmp.htm perl script and dump-utmp we get different date time:

{{{
$ perl -we '@type=("Empty","Run Lvl","Boot","New Time","Old Time","Init","Login","Normal","Term","Account");$recs = ""; while (<>) {$recs .= $_};foreach (split(/(.{384})/s,$recs)) {next if length($_) == 0;my ($type,$pid,$line,$inittab,$user,$host,$t1,$t2,$t3,$t4,$t5) = $_ =~/(.{4})(.{4})(.{32})(.{4})(.{32})(.{256})(.{4})(.{4})(.{4})(.{4})(.{4})/s;if (defined $line && $line =~ /\w/) {$line =~ s/\x00+//g;$host =~ s/\x00+//g;$user =~ s/\x00+//g;printf("%s %-8s %-12s %10s %-45s \n",scalar(gmtime(unpack("I4",$t3))),$type[unpack("I4",$type)],$user,$line,$host)}}print"\n"' < /var/log/wtmp.1
Mon Feb  3 20:01:55 2014 Login    LOGIN              tty4                                              
Mon Feb  3 20:01:55 2014 Login    LOGIN              tty5                                              
Mon Feb  3 20:01:55 2014 Login    LOGIN              tty2                                              
Mon Feb  3 20:01:55 2014 Login    LOGIN              tty3                                              
Mon Feb  3 20:01:55 2014 Login    LOGIN              tty6                                              
Mon Feb  3 20:01:55 2014 Login    LOGIN              tty1                                              
Mon Feb  3 20:02:05 2014 Normal   sampleadmin          tty1                                              
Mon Feb  3 20:01:19 2014 Term                        tty4                                              
Mon Feb  3 20:01:19 2014 Term                        tty5                                              
Mon Feb  3 20:01:19 2014 Term                        tty2                                              
Mon Feb  3 20:01:19 2014 Term                        tty3                                              
Mon Feb  3 20:01:19 2014 Term                        tty6                                              
Mon Feb  3 20:01:37 2014 Login    LOGIN              tty4                                              
Mon Feb  3 20:01:37 2014 Login    LOGIN              tty5                                              
Mon Feb  3 20:01:37 2014 Login    LOGIN              tty2                                              
Mon Feb  3 20:01:37 2014 Login    LOGIN              tty3                                              
Mon Feb  3 20:01:37 2014 Login    LOGIN              tty6                                              
Mon Feb  3 20:01:37 2014 Login    LOGIN              tty1                                              
Mon Feb  3 20:31:05 2014 Normal   sampleadmin         pts/0 box4.sample.com                      
Mon Feb  3 20:45:12 2014 Term                        tty4                                              
Mon Feb  3 20:45:12 2014 Term                        tty5                                              
Mon Feb  3 20:45:12 2014 Term                        tty2                                              
Mon Feb  3 20:45:12 2014 Term                        tty3                                              
Mon Feb  3 20:45:12 2014 Term                        tty6                                              
Mon Feb  3 20:45:12 2014 Term                        tty1                                              
Mon Feb  3 20:45:13 2014 Term                       pts/0                                              
Mon Feb  3 20:45:28 2014 Login    LOGIN              tty4                                              
Mon Feb  3 20:45:28 2014 Login    LOGIN              tty5                                              
Mon Feb  3 20:45:28 2014 Login    LOGIN              tty2                                              
Mon Feb  3 20:45:28 2014 Login    LOGIN              tty3                                              
Mon Feb  3 20:45:28 2014 Login    LOGIN              tty6                                              
Mon Feb  3 20:45:28 2014 Login    LOGIN              tty1                                              
Mon Feb  3 22:15:29 2014 Normal   sampleadmin         pts/0 box4.sample.com                           
Mon Feb  3 22:31:56 2014 Term                       pts/0                                              
Mon Feb  3 22:33:40 2014 Normal   sampleadmin         pts/0 box4.sample.com                           
Mon Feb  3 22:33:40 2014 Term                       pts/0                                              
Mon Feb  3 22:33:41 2014 Normal   sampleadmin         pts/0 box4.sample.com                           
Mon Feb  3 22:41:27 2014 Term                       pts/0                                              
Tue Feb  4 02:09:24 2014 Normal   sampleadmin         pts/0 box4.sample.com                      
Tue Feb  4 02:10:18 2014 Normal   sampleadmin         pts/1 box4.sample.com                           
Tue Feb  4 02:10:18 2014 Term                       pts/1                                              
Tue Feb  4 02:10:18 2014 Normal   sampleadmin         pts/1 box4.sample.com                           
Tue Feb  4 02:12:57 2014 Term                       pts/1                                              
Tue Feb  4 02:14:38 2014 Normal   sampleadmin         pts/1 box4.sample.com                      
Tue Feb  4 02:28:41 2014 Term                       pts/0                                              
Tue Feb  4 02:28:45 2014 Term                       pts/1                                              
Wed Feb  5 23:55:03 2014 Normal   sampleadmin         pts/0 box4.sample.com                      
Thu Feb  6 00:10:19 2014 Term                       pts/0                                              
Thu Feb  6 13:30:10 2014 Normal   sampleadmin         pts/0 box4.sample.com                      
Thu Feb  6 13:30:10 2014 Term                       pts/0                                              
Thu Feb  6 13:30:10 2014 Normal   sampleadmin         pts/0 box4.sample.com                      
Thu Feb  6 13:33:11 2014 Term                       pts/0                                              
Thu Feb  6 13:36:23 2014 Normal   sampleadmin         pts/0 box4.sample.com                           
Thu Feb  6 13:58:14 2014 Term                       pts/0                                              
Sat Feb  8 18:52:03 2014 Normal   sampleadmin         pts/0 192.168.5.101                                
Sat Feb  8 23:05:52 2014 Term                       pts/0                                              
Sun Feb  9 17:56:39 2014 Normal   sampleadmin         pts/0 192.168.0.223                                
Sun Feb  9 17:56:50 2014 Term                       pts/0


$ /usr/sbin/dump-utmp /var/log/wtmp.1
reboot                          |~                               |2|~~  |    0|3.11.0-12-generic                                                                                                                                                                                                                                               |Mon Feb  3 15:01:55 2014
runlevel                        |~                               |1|~~  |   50|3.11.0-12-generic                                                                                                                                                                                                                                               |Mon Feb  3 15:01:55 2014
LOGIN                           |tty4                            |6|4   |  747|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:55 2014
LOGIN                           |tty5                            |6|5   |  754|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:55 2014
LOGIN                           |tty2                            |6|2   |  768|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:55 2014
LOGIN                           |tty3                            |6|3   |  769|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:55 2014
LOGIN                           |tty6                            |6|6   |  772|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:55 2014
LOGIN                           |tty1                            |6|1   |  854|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:55 2014
sampleadmin                       |tty1                            |7|    |  854|                                                                                                                                                                                                                                                                |Mon Feb  3 15:02:05 2014
runlevel                        |~                               |1|~~  |12854|3.11.0-12-generic                                                                                                                                                                                                                                               |Mon Feb  3 15:01:19 2014
                                |tty4                            |8|4   |  747|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:19 2014
                                |tty5                            |8|5   |  754|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:19 2014
                                |tty2                            |8|2   |  768|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:19 2014
                                |tty3                            |8|3   |  769|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:19 2014
                                |tty6                            |8|6   |  772|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:19 2014
shutdown                        |~                               |1|~~  |    0|3.11.0-12-generic                                                                                                                                                                                                                                               |Mon Feb  3 15:01:19 2014
reboot                          |~                               |2|~~  |    0|3.11.0-12-generic                                                                                                                                                                                                                                               |Mon Feb  3 15:01:37 2014
runlevel                        |~                               |1|~~  |   50|3.11.0-12-generic                                                                                                                                                                                                                                               |Mon Feb  3 15:01:37 2014
LOGIN                           |tty4                            |6|4   |  784|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:37 2014
LOGIN                           |tty5                            |6|5   |  799|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:37 2014
LOGIN                           |tty2                            |6|2   |  806|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:37 2014
LOGIN                           |tty3                            |6|3   |  808|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:37 2014
LOGIN                           |tty6                            |6|6   |  821|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:37 2014
LOGIN                           |tty1                            |6|1   |  893|                                                                                                                                                                                                                                                                |Mon Feb  3 15:01:37 2014
sampleadmin                       |pts/0                           |7|ts/0| 1168|box4.sample.com                                                                                                                                                                                                                                         |Mon Feb  3 15:31:05 2014
runlevel                        |~                               |1|~~  |12854|3.11.0-12-generic                                                                                                                                                                                                                                               |Mon Feb  3 15:45:12 2014
                                |tty4                            |8|4   |  784|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:12 2014
                                |tty5                            |8|5   |  799|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:12 2014
                                |tty2                            |8|2   |  806|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:12 2014
                                |tty3                            |8|3   |  808|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:12 2014
                                |tty6                            |8|6   |  821|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:12 2014
                                |tty1                            |8|1   |  893|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:12 2014
                                |pts/0                           |8|    | 1168|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:13 2014
shutdown                        |~                               |1|~~  |    0|3.11.0-12-generic                                                                                                                                                                                                                                               |Mon Feb  3 15:45:13 2014
reboot                          |~                               |2|~~  |    0|3.11.0-12-generic                                                                                                                                                                                                                                               |Mon Feb  3 15:45:28 2014
runlevel                        |~                               |1|~~  |   50|3.11.0-12-generic                                                                                                                                                                                                                                               |Mon Feb  3 15:45:28 2014
LOGIN                           |tty4                            |6|4   |  749|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:28 2014
LOGIN                           |tty5                            |6|5   |  760|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:28 2014
LOGIN                           |tty2                            |6|2   |  773|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:28 2014
LOGIN                           |tty3                            |6|3   |  774|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:28 2014
LOGIN                           |tty6                            |6|6   |  782|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:28 2014
LOGIN                           |tty1                            |6|1   |  904|                                                                                                                                                                                                                                                                |Mon Feb  3 15:45:28 2014
sampleadmin                       |pts/0                           |7|ts/0| 1199|box4.sample.com                                                                                                                                                                                                                                              |Mon Feb  3 17:15:29 2014
                                |pts/0                           |8|    | 1199|                                                                                                                                                                                                                                                                |Mon Feb  3 17:31:56 2014
sampleadmin                       |pts/0                           |7|ts/0| 1347|box4.sample.com                                                                                                                                                                                                                                              |Mon Feb  3 17:33:40 2014
                                |pts/0                           |8|    | 1347|                                                                                                                                                                                                                                                                |Mon Feb  3 17:33:40 2014
sampleadmin                       |pts/0                           |7|ts/0| 1448|box4.sample.com                                                                                                                                                                                                                                              |Mon Feb  3 17:33:41 2014
                                |pts/0                           |8|    | 1448|                                                                                                                                                                                                                                                                |Mon Feb  3 17:41:27 2014
sampleadmin                       |pts/0                           |7|ts/0|25523|box4.sample.com                                                                                                                                                                                                                                         |Mon Feb  3 21:09:24 2014
sampleadmin                       |pts/1                           |7|ts/1|25662|box4.sample.com                                                                                                                                                                                                                                              |Mon Feb  3 21:10:18 2014
                                |pts/1                           |8|    |25662|                                                                                                                                                                                                                                                                |Mon Feb  3 21:10:18 2014
sampleadmin                       |pts/1                           |7|ts/1|25675|box4.sample.com                                                                                                                                                                                                                                              |Mon Feb  3 21:10:18 2014
                                |pts/1                           |8|    |25675|                                                                                                                                                                                                                                                                |Mon Feb  3 21:12:57 2014
sampleadmin                       |pts/1                           |7|ts/1| 1471|box4.sample.com                                                                                                                                                                                                                                         |Mon Feb  3 21:14:38 2014
                                |pts/0                           |8|    |25523|                                                                                                                                                                                                                                                                |Mon Feb  3 21:28:41 2014
                                |pts/1                           |8|    | 1471|                                                                                                                                                                                                                                                                |Mon Feb  3 21:28:45 2014
sampleadmin                       |pts/0                           |7|ts/0| 3111|box4.sample.com                                                                                                                                                                                                                                         |Wed Feb  5 18:55:03 2014
                                |pts/0                           |8|    | 3111|                                                                                                                                                                                                                                                                |Wed Feb  5 19:10:19 2014
sampleadmin                       |pts/0                           |7|ts/0| 3705|box4.sample.com                                                                                                                                                                                                                                         |Thu Feb  6 08:30:10 2014
                                |pts/0                           |8|    | 3705|                                                                                                                                                                                                                                                                |Thu Feb  6 08:30:10 2014
sampleadmin                       |pts/0                           |7|ts/0| 3718|box4.sample.com                                                                                                                                                                                                                                         |Thu Feb  6 08:30:10 2014
                                |pts/0                           |8|    | 3718|                                                                                                                                                                                                                                                                |Thu Feb  6 08:33:11 2014
sampleadmin                       |pts/0                           |7|ts/0|11992|box4.sample.com                                                                                                                                                                                                                                              |Thu Feb  6 08:36:23 2014
                                |pts/0                           |8|    |11992|                                                                                                                                                                                                                                                                |Thu Feb  6 08:58:14 2014
sampleadmin                       |pts/0                           |7|ts/0|14090|192.168.5.101                                                                                                                                                                                                                                                   |Sat Feb  8 13:52:03 2014
                                |pts/0                           |8|    |14090|                                                                                                                                                                                                                                                                |Sat Feb  8 18:05:52 2014
sampleadmin                       |pts/0                           |7|ts/0|14870|192.168.0.223                                                                                                                                                                                                                                                   |Sun Feb  9 12:56:39 2014
                                |pts/0                           |8|    |14870|                                                                                                                                                                                                                                                                |Sun Feb  9 12:56:50 2014
}}}

Nestor Urquiza <nestoru>

 

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