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Bug 1782180 - snmpd returns "invalid(4)" process state (hrSWRunStatus) for process names containing spaces
Summary: snmpd returns "invalid(4)" process state (hrSWRunStatus) for process names co...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: net-snmp
Version: 7.7
Hardware: Unspecified
OS: Linux
unspecified
medium
Target Milestone: rc
: ---
Assignee: Josef Ridky
QA Contact: Evgeny Fedin
URL:
Whiteboard:
Depends On:
Blocks: 1780582
TreeView+ depends on / blocked
 
Reported: 2019-12-11 10:52 UTC by Apurbita Mukherjee
Modified: 2023-12-15 17:04 UTC (History)
5 users (show)

Fixed In Version: net-snmp-5.7.2-49.el7
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-09-29 20:56:26 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:4037 0 None None None 2020-09-29 20:56:49 UTC

Description Apurbita Mukherjee 2019-12-11 10:52:47 UTC
Description of problem:
When querying the hrSWRunStatus table via SNMP when using snmpd, it should generally return 1 or 2 for processes that are running or runnable. However, if the process name contains a space, snmpd return 4 (invalid) for the process state. This appears to be because it's reading /proc/$PID/stat and simply splitting on space and then grabbing the third element, which would normally be the process status, but when the process name contains a space, this is no longer true.

Version-Release number of selected component (if applicable):
net-snmp-5.7.2-43.el7.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Install above net-snmp version 
2. Configure SNMP using rocommunity 

3. As an example of a process where this is failing:

$ cat /proc/52425/stat
52425 (spamd child) S 52423 52423 52423 0 -1 1077944384 525 0 0 0 0 0 0 0 20 0 1 0 4144660 296542208 17648 18446744073709551615 1 1 0 0 0 0 0 4224 2048 18446744073709551615 0 0 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0

$ snmpwalk -v2c -c **** localhost .1.3.6.1.2.1.25.4.2.1.7.52425
HOST-RESOURCES-MIB::hrSWRunStatus.52425 = INTEGER: invalid(4)    <<<----

Actual results:
it should generally return 1 or 2 for processes that are running.

Expected results:
The snmpwalk result should be correct instead of returning any invalid error.


Additional info:
This looks to have been fixed in upstream snmpd in 5.7.3 in this commit https://github.com/net-snmp/net-snmp/commit/8fa46f29613c1792c4a14432944273b6d74e3f3c#diff-bdb35b3a9a24eb5464a067632ef01ddf which is the version after the one that's currently in RHEL7, - 5.7.2.

Comment 14 errata-xmlrpc 2020-09-29 20:56:26 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (net-snmp bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:4037


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