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Bug 106081 - ucd-snmp memory broken with bigmem kernels
ucd-snmp memory broken with bigmem kernels
Product: Red Hat Linux
Classification: Retired
Component: ucd-snmp (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Phil Knirsch
Brock Organ
Depends On:
  Show dependency treegraph
Reported: 2003-10-02 12:23 EDT by Hrunting Johnson
Modified: 2015-03-04 20:12 EST (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-01-29 11:16:37 EST
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Regression: ---
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Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Patch to report memory properly on bigmem/enterprise kernels (852 bytes, patch)
2003-10-02 12:24 EDT, Hrunting Johnson
no flags Details | Diff

  None (edit)
Description Hrunting Johnson 2003-10-02 12:23:21 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6a)
Gecko/20030929 Firebird/0.7+

Description of problem:
This actually affects all ucd-snmp and net-snmp builds running on bigmem or
enterprise kernels.  Basically, ucd-snmp uses an unsigned long to read in the
memory value.  If you have over 4GB of memory (which these kernels support),
faulty memory values are returned.

The SNMP agent itself reports the values in KB as an unsigned 32-bit value, so a
value of at least 42-bits is supported.

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

How reproducible:

Steps to Reproduce:
1. install ucd-snmp on box with 8GB of RAM
2. query memory via SNMP

Actual Results:  Wrong memory values returned

Expected Results:  Correct memory values returned

Additional info:

Attached is a patch which fixes this problem by using an unsigned long long to
store the value read from the file.  The checks to sanely present values for
systems with over 4TB of memory remain.
Comment 1 Hrunting Johnson 2003-10-02 12:24:15 EDT
Created attachment 94883 [details]
Patch to report memory properly on bigmem/enterprise kernels
Comment 2 Phil Knirsch 2003-10-23 05:30:03 EDT
Will be included in the next quartely update of AS2.1

Read ya, Phil
Comment 3 Phil Knirsch 2004-01-29 11:16:37 EST
Errata has been released, closing as ERRATA.

Read ya, Phil

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