Bug 227849

Summary: IPv6: Badness in dst_release at include/net/dst.h:149
Product: Red Hat Enterprise Linux 4 Reporter: Per Steinar Iversen <persteinar.iversen>
Component: kernelAssignee: Neil Horman <nhorman>
Status: CLOSED DUPLICATE QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0CC: abo, davem, kajtzu, tgraf
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-04-26 15:51:27 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
Kernel log after problem occurs
none
dmesg output with dst_badness messages none

Description Per Steinar Iversen 2007-02-08 15:42:52 UTC 
Description of problem:

Kernel starts complaining about
"Badness in dst_release at include/net/dst.h:149"

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

kernel-smp-2.6.9-42.0.8.EL.x86_64

How reproducible:

Not possible to reproduce but happens every few weeks.

Steps to Reproduce:
1. Run linux, in this case a mailserver using both IPv4 and IPv6.
2. Eventually the kernel starts complaining and sendmail seems to have problems.
3. A reboot cures everything, until next time.
  
Actual results:

Sometimes the kernel has problems that seems to be IPv6 related. See attached
logfile.

Expected results:

No problems!

Additional info:

The machine is a Dell PowerEdge 1950.
Comment 1 Per Steinar Iversen 2007-02-08 15:42:52 UTC 
Created attachment 147657 [details]
Kernel log after problem occurs
Comment 2 Tim Mooney 2007-02-08 22:47:42 UTC 
We just had this problem happen today on a couple of our RHEL4 boxes too, though
they're both running a slightly older kernel (2.6.9-42.0.3.ELsmp).  The dmesg
messages corresponded with periods of extremely high load.

Our kernel messages don't look exactly the same, so I'll attach ours too.
Comment 3 Tim Mooney 2007-02-08 22:48:44 UTC 
Created attachment 147712 [details]
dmesg output with dst_badness messages
Comment 4 Neil Horman 2007-03-01 20:27:31 UTC 
would you all mind please sending in sysreports?  That would help track down
where the extra refcount decrement might be.  Thanks!
Comment 5 Per Steinar Iversen 2007-03-02 08:25:58 UTC 
The output of sysreport in this case is large (33MB) and contains a complete
configuration for the system in question - is the idea to attach this in public
to this bugreport?
Comment 6 Neil Horman 2007-03-02 14:52:07 UTC 
yes, thats the idea.  If you don't feel comfortable doing so, you can email them
to me instead.
Comment 7 Alexander Boström 2007-04-24 08:06:00 UTC 
Is this related to bug #167715 in any way?
Comment 8 Per Steinar Iversen 2007-04-26 15:31:48 UTC 
It looks a lot like that to me. When is a fixed kernel going to appear?
Comment 9 Neil Horman 2007-04-26 15:51:27 UTC 
Looks like it will be released with the 4.6 kernel update

*** This bug has been marked as a duplicate of 167715 ***