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* [Bug 1000772] New: SNMP lockup on requests for ifTable interface number <= 0
@ 2009-05-18 18:04 bugzilla-daemon
2009-05-19 20:28 ` [Bug 1000772] " bugzilla-daemon
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: bugzilla-daemon @ 2009-05-18 18:04 UTC (permalink / raw)
To: ecos-bugs
http://bugs.ecos.sourceware.org/show_bug.cgi?id=1000772
Summary: SNMP lockup on requests for ifTable interface number <=
0
Product: eCos
Version: CVS
Platform: Other (please specify)
OS/Version: All
Status: UNCONFIRMED
Severity: normal
Priority: normal
Component: SNMP
AssignedTo: bartv@ecoscentric.com
ReportedBy: grant.b.edwards@gmail.com
QAContact: ecos-bugs@ecos.sourceware.org
Class: ---
Created an attachment (id=728)
--> (http://bugs.ecos.sourceware.org/attachment.cgi?id=728)
Patch to fix SNMP lock-up
The FreeBSD SNMP helper cyg_snmp_get_if() exhibits a bug when
passed if_num<=0: it loops 2^32 times -- walking through all of
memory and then returning a rogue pointer.
This can be demonstrated by sending an eCos-based device an SMP
"get" request for OID 1.3.6.1.2.1.2.2.1.6.0. Typical behavior
is that the device will lock up for several seconds ans the
SNMP management thread loops through all of memory.
The problem didn't exist in the helper routine for the NetBSD.
The attached patch fixes the problem.
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* [Bug 1000772] SNMP lockup on requests for ifTable interface number <= 0
2009-05-18 18:04 [Bug 1000772] New: SNMP lockup on requests for ifTable interface number <= 0 bugzilla-daemon
@ 2009-05-19 20:28 ` bugzilla-daemon
2009-05-21 15:03 ` bugzilla-daemon
2009-05-21 15:08 ` bugzilla-daemon
2 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2009-05-19 20:28 UTC (permalink / raw)
To: ecos-bugs
http://bugs.ecos.sourceware.org/show_bug.cgi?id=1000772
John Dallaway <john@dallaway.org.uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |john@dallaway.org.uk
--- Comment #1 from John Dallaway <john@dallaway.org.uk> 2009-05-19 21:28:07 ---
Grant, you've clearly researched this issue. The patch is small and unlikely to
break anything. I'll give others a day or two to comment and then check it in.
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* [Bug 1000772] SNMP lockup on requests for ifTable interface number <= 0
2009-05-18 18:04 [Bug 1000772] New: SNMP lockup on requests for ifTable interface number <= 0 bugzilla-daemon
2009-05-19 20:28 ` [Bug 1000772] " bugzilla-daemon
@ 2009-05-21 15:03 ` bugzilla-daemon
2009-05-21 15:08 ` bugzilla-daemon
2 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2009-05-21 15:03 UTC (permalink / raw)
To: ecos-bugs
http://bugs.ecos.sourceware.org/show_bug.cgi?id=1000772
John Dallaway <john@dallaway.org.uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|bartv@ecoscentric.com |jld@ecoscentric.com
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^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug 1000772] SNMP lockup on requests for ifTable interface number <= 0
2009-05-18 18:04 [Bug 1000772] New: SNMP lockup on requests for ifTable interface number <= 0 bugzilla-daemon
2009-05-19 20:28 ` [Bug 1000772] " bugzilla-daemon
2009-05-21 15:03 ` bugzilla-daemon
@ 2009-05-21 15:08 ` bugzilla-daemon
2 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2009-05-21 15:08 UTC (permalink / raw)
To: ecos-bugs
http://bugs.ecos.sourceware.org/show_bug.cgi?id=1000772
John Dallaway <john@dallaway.org.uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |CURRENTRELEASE
--- Comment #2 from John Dallaway <john@dallaway.org.uk> 2009-05-21 16:07:54 ---
The patch is now applied and checked-in. Thank you for your contribution.
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2009-05-18 18:04 [Bug 1000772] New: SNMP lockup on requests for ifTable interface number <= 0 bugzilla-daemon
2009-05-19 20:28 ` [Bug 1000772] " bugzilla-daemon
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2009-05-21 15:08 ` bugzilla-daemon
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