[ net-snmp-Bugs-758437 ] snmpd dies on linux host with many interfaces

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Bugs item #758437, was opened at 2003-06-21 11:51
Message generated for change (Comment added) made by slif
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Category: agent
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Grzegorz Piszczek (gpiszczek)
Assigned to: Nobody/Anonymous (nobody)
Summary: snmpd dies on linux host with many interfaces

Initial Comment:
Hi!
There is a bug in all net-snmp 5.0.x causing snmpd to
die on linux host with many interfaces (i.e. ip
aliases). It happens due to per process maximum number
of open files limit. Patch included.

Regards
Grzesiek

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>Comment By: Michael J. Slifcak (slif)
Date: 2004-06-15 09:43

Message:
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Thanks for the bug report!  We've fixed the problem in the
5.0.x and 5.1.x code branches and the main development tree,
so it should be fixed in future releases of the net-snmp package.

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Comment By: Michael J. Slifcak (slif)
Date: 2004-06-15 09:43

Message:
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 Several improvements to the patch for bug#758437
 credited to Grzegorz Piszczek.
 1. The original patch moved the socket open outside the loop.
      That was bad if the loop repeated, which it can!
    This revised patch keeps the socket open inside the loop.

 2. SNMP_FREE performs a robust free.
 3. Opening the socket prior to increasing the buffer
     may be beneficial in strained environment.

patch-linux-ipAddr-bug-758437 was applied.
net-snmp-5.0.x-ipAddr.diff must not be applied.



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Comment By: Michael J. Slifcak (slif)
Date: 2004-06-11 18:26

Message:
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the patch-linux-ipAddr-bug-758437
attempts to open the socket before allocating storage.
This may give better performance in resource limited
environments.

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