ps shows wierd clock time values ?

[Ben Russo]

Tobias Speckbacher wrote:
>>-----Original Message-----
>>From: redhat-list-bounces at redhat.com [mailto:redhat-list-
>>bounces at redhat.com] On Behalf Of Ben Russo
>>Sent: Tuesday, April 12, 2005 8:32 AM
>>To: redhat-list at redhat.com
>>Subject: ps shows wierd clock time values ?
>>
>>Today I looked at a system that has weird timestamp/clock issues?
>>Anybody seen this before, know what it is?
>>I have some excerpts of commands below that demonstrate the issue.
>>Please note the 2006, and April 15 dates on some of the processes and
>>file timestamps as well as process times last year, when the "uptime"
>>says only 17 days (March 25th)....  But I could swear that the box has
>>been up for a LONG time (like maybe 2+ years?)
>>Doesn't make sense.
> 
> 
> What you are seeing are symptoms of the "jiffies overflow" bug.
> The problem is that uptime and process related time values are stored as
> a 32 bit values which contain the number of jiffies elapsed (jiffie =
> 1/100th second). Basically the counter overflows after 497 days of
> uptime and the symptoms your system exhibits appear.
> 
> Upgrading the kernel to a more recent version should fix the issue.
> 
> 
> 

Thanks, I just found that out myself...

http://www.ussg.iu.edu/hypermail/linux/kernel/0202.2/0337.html

But I am running a RedHat Enterprise Linux Kernel 2.4.9-e.27
which was built on Tue 05 Aug 2003 by RedHat.
Isn't that kernel already patched for this OLD bug?

I have tried searching RedHat bugzilla for the Jiffies bug to see
If I could find a specific kernel version that listed it as
"fixed" but I haven't seen that, just a mention that in the old
RedHat 7.1 it was "closed"

If I upgrade the kernel to 2.4.9-e.59 (the latest RHEL-AS-2.1 kernel)
will that have the fix?

-Ben.