NetBSD Problem Report #48176

From tsutsui@ceres.dti.ne.jp  Tue Sep  3 13:12:28 2013
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Date: Tue, 3 Sep 2013 22:12:23 +0900 (JST)
From: Izumi Tsutsui <tsutsui@ceres.dti.ne.jp>
Reply-To: tsutsui@ceres.dti.ne.jp
To: gnats-bugs@gnats.NetBSD.org
Cc: tsutsui@ceres.dti.ne.jp
Subject: ping(8) shows bogus time with small packetsize
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>Number:         48176
>Category:       bin
>Synopsis:       ping(8) shows bogus time with small packetsize
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bin-bug-people
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Sep 03 13:15:00 +0000 2013
>Closed-Date:    Sat Feb 24 02:18:14 +0000 2018
>Last-Modified:  Sat Feb 24 02:18:14 +0000 2018
>Originator:     Izumi Tsutsui
>Release:        NetBSD 6.1
>Organization:
>Environment:
System: NetBSD 6.1 (GENERIC)
Architecture: i386
Machine: i386
>Description:
ping(8) with -s 8 through 15 (and maybe <20) shows bogus time. 

>How-To-Repeat:
% ping -c 1 -s 8 localhost
PING localhost (127.0.0.1): 0 data bytes
8 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=-544499729298.913 ms

----localhost PING Statistics----
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = -544499729298.913/-544499729298.913/0.000/0.000 ms
% ping -c 1 -s 15 localhost
PING localhost (127.0.0.1): 3 data bytes
15 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=-7566047373982433280000.000 ms

----localhost PING Statistics----
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = -7566047373982433280000.000/-7566047373982433280000.000/0.000/0.000 ms
% ping -c 1 -s 16 localhost
PING localhost (127.0.0.1): 4 data bytes
16 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=232.439 ms

----localhost PING Statistics----
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 232.439/232.439/232.439/0.000 ms
% ping -c 1 -s 20 localtime
PING localhost (127.0.0.1): 8 data bytes
20 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=0.029 ms

----localhost PING Statistics----
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.029/0.029/0.029/0.000 ms


>Fix:
Don't print timestamps for smaller packetsize to send struct timespec?

>Release-Note:

>Audit-Trail:

State-Changed-From-To: open->feedback
State-Changed-By: ginsbach@NetBSD.org
State-Changed-When: Sun, 20 Aug 2017 00:45:30 +0000
State-Changed-Why:
This was fixed in netbsd-7.  The fix consists of several different
revisions: 1.104, 1.105, 1.108 (partial), 1.109 (partial), and 1.116.
Should this be pulled up to netbsd-6?


From: Izumi Tsutsui <tsutsui@ceres.dti.ne.jp>
To: gnats-bugs@NetBSD.org
Cc: ginsbach@NetBSD.org, tsutsui@ceres.dti.ne.jp
Subject: Re: bin/48176 (ping(8) shows bogus time with small packetsize)
Date: Sat, 26 Aug 2017 21:47:24 +0900

 > Should this be pulled up to netbsd-6?

 Sorry, no idea (since I don't use 6.x anymore).

 ---
 Izumi Tsutsui

State-Changed-From-To: feedback->closed
State-Changed-By: tsutsui@NetBSD.org
State-Changed-When: Sat, 24 Feb 2018 02:18:14 +0000
State-Changed-Why:
Assume no response means no demand.


>Unformatted:

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