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Date: Tue, 05 Mar 2013 10:33:13 +0100
From: Dimitry Andric <dim@FreeBSD.org>
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To: "Hartmann, O." <ohartman@zedat.fu-berlin.de>, 
 FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: r247829: dbus fails to start. portmaster SIGNAL 13 when doing
 extraction
References: <5135B7E1.3050002@zedat.fu-berlin.de>
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On 2013-03-05 10:16, Hartmann, O. wrote:
> On FreeBSD 10.0-CURRENT #3 r247829: Tue Mar  5 08:12:19 CET 2013/amd64 I
> run into a mess and can not figure out what happens.
>
> Suddenly, after upgrading, buildworld etc., dbus fails to start so X11
> is without mouse.
>
> Trying to rebuild the port dbus fails in a SIGNAL 13 while [do-extract].
>
> This is weird. I can not extract and rebuild ports anymore, every port I
> try to rebuild with portmaster fails with the very same fault:
>
> => SHA256 Checksum OK for dbus-1.4.14.tar.gz.
> *** [do-extract] Signal 13

This is SIGPIPE, so maybe your tar is broken?  What happens if you
manually extract that tar.gz file?