Bug 138001 - Cron jobs run twice during Daylight savings time
Summary: Cron jobs run twice during Daylight savings time
Alias: None
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: vixie-cron
Version: 3.0
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Jason Vas Dias
QA Contact: Brock Organ
Depends On:
Blocks: 161600
TreeView+ depends on / blocked
Reported: 2004-11-03 18:26 UTC by Josef Bacik
Modified: 2007-11-30 22:07 UTC (History)
1 user (show)

Clone Of:
Last Closed: 2006-05-01 17:38:40 UTC

Attachments (Terms of Use)

Description Josef Bacik 2004-11-03 18:26:31 UTC
From Bugzilla Helper:
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Description of problem:
A user had three cron jobs run twice this past weekend because of
daylight savings time.  Talked with the engineers, apparently this has
been fixed upstream but hasn't been backported to RHEL 3 yet.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1.His jobs ran between midnight and 2 am during daylight savings time

Actual Results:  The scripts ran twice

Expected Results:  the scripts should have only run once

Additional info:

Comment 1 Jason Vas Dias 2004-11-03 18:49:28 UTC
 This problem is fixed in vixie-cron-4.1-+ as in FC3/RHEL4 .
 vixie-cron must be upgraded to 4.1 in RHEL-3.

Comment 2 Jason Vas Dias 2004-11-10 16:54:02 UTC
 vixie-cron is now upgraded to vixie-cron-4.1-1_EL3 in RHEL3 .
 It should be included in RHEL-3-U5.
 Meanwhile, you can download it for testing from :

Comment 3 Sergio Monteiro Basto 2005-05-11 17:18:02 UTC
Hi, this is the most similar bug that I can found.
I am using vixie-cron-4.1-33_FC3, 
when I turn on my laptop after midinight, May 11 02:46:56
logwatch start before the schedual and send the email from anonymous user ?
After this run at schedual time and send normally the email from root user.
After many time trying understand the problem, I realize this happens when I
reboot or power on my laptop after 0:00 am and before 4:02 am 

Comment 4 Jason Vas Dias 2005-05-11 18:30:17 UTC
(In reply to comment #3) :
please see bug #157448 raised about the problem you report, which is NOT 
related to the DST change issue that is the subject of this bug report.

Comment 5 Jason Vas Dias 2005-10-14 15:41:41 UTC
This bug is fixed with vixie-cron-4.1-8_EL3, available from:
and should be considered for inclusion in RHEL-3-U7 .

Comment 8 Jason Vas Dias 2006-05-01 17:38:40 UTC
This bug is fixed with vixie-cron-4.1-10.EL3, currently in RHEL-3-U7, with 
errata RHSA-2005:0117

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