Mailinglist Archive: opensuse-bugs (6366 mails)

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https://bugzilla.novell.com/show_bug.cgi?id=270252

           Summary: invalid entry causes cron to stop registering crontable
                    changes
           Product: SUSE Linux 10.1
           Version: Final
          Platform: x86-64
        OS/Version: Other
            Status: NEW
          Severity: Critical
          Priority: P5 - None
         Component: Other
        AssignedTo: bnc-team-screening@xxxxxxxxxxxxxxxxxxxxxx
        ReportedBy: nohezp@xxxxxxxxx
         QAContact: qa@xxxxxxx


We have noticed a problem with cron. After submitting a invalid cron
entry the daemon ignores any further changes to any cron tables. A
restart of cron fixes this behaviour until the next invalid entry is
submitted. To explain this lets say a user submits a cron entry:

* * * * mon-fri (/path/to/command)

The above entry is invalid as the manpage clearly mentions that "Ranges
or lists of names are not allowed." in day of week column.

But crontab accepts this silently and henceforth any change by any
user is ignored till crond is restarted. Which implies that any user
can trigger this bug and cause changes made by other users to their
respective cron tables to be ignored. Removing this invalid entry does
not fix the problem. cron has to be restarted.

We know that this bug exists in the following:

    OpenSuSE 10.1 - cron-4.1-45.7.x86-64
    OpenSuSE 10.3 - cron-4.1-88.i586


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