NetBSD Problem Report #50588
From www@NetBSD.org Thu Dec 24 08:42:11 2015
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for <gnats-bugs@gnats.NetBSD.org>; Thu, 24 Dec 2015 08:42:11 +0000 (UTC)
Message-Id: <20151224084210.09C7A7ACC8@mollari.NetBSD.org>
Date: Thu, 24 Dec 2015 08:42:10 +0000 (UTC)
From: ozaki-r@netbsd.org
Reply-To: ozaki-r@netbsd.org
To: gnats-bugs@NetBSD.org
Subject: ATF tests fail with "rump.ping6: failed to get receiving hop limit"
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>Number: 50588
>Category: kern
>Synopsis: ATF tests fail with "rump.ping6: failed to get receiving hop limit"
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Thu Dec 24 08:45:00 +0000 2015
>Originator: Ryota Ozaki
>Release: NetBSD-current
>Organization:
>Environment:
NetBSD rangeley 7.99.24 NetBSD 7.99.24 (GENERIC) #216: Thu Dec 17 11:33:13 JST 2015 ozaki-r@rangeley:(hidden) amd6
>Description:
ATF tests using rump.ping6 fail with "rump.ping6: failed to get receiving hop limit".
The error means that rump.ping6 sets IPV6_RECVHOPLIMIT to a socket, however,
it cannot get a hop limit value from a packet being received on the socket via
ancillary data (CMSG_DATA(3)).
It rarely fails only on rump_server in ATF tests. I have never seen the error on
baremetal machines.
>How-To-Repeat:
Run ATF tests using rump.ping6, e.g., t_gif, many times.
Or see results of ATF tests on anita: http://releng.netbsd.org/test-results.html
It's known that if we limit rump_server's memory (e.g., -r 1m), we can reproduce it
in smaller number of trials.
>Fix:
N/A
(Contact us)
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