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From: John Baldwin <jhb@freebsd.org>
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Subject: Re: r247839: broken pipe - for top, sudo and ports
Date: Wed, 6 Mar 2013 08:04:57 -0500
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 (bigwig.baldwin.cx); Wed, 06 Mar 2013 10:38:00 -0500 (EST)
Cc: Dimitry Andric <dim@freebsd.org>, "Hartmann,
 O." <ohartman@zedat.fu-berlin.de>
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On Tuesday, March 05, 2013 2:35:48 pm Hartmann, O. wrote:
> On recent FreeBSD 10.0-CURRENT/amd64 (CLANG buildworld, serveral systems
> (3) the same symptoms)), many services drop a sporadic
> 
> broken pipe
> 
> This happesn to system's top (I have to type it several times to get
> finally a top), it happens to "sudo su -", it happens to SSH (drops
> connection with broken pipe) and as I reported earlier, it seems to
> affect the entire port system, since I can not build any port, I receive
> 
> *** [do-extract] Signal 13
> 
> This is dramatic for me, because several modules (rtc, linux_adobe ...)
> can not be recompiled as it is required by the last /usr/src/UPDATING
> entry 20130304.
> 
> Since dbus fails to start and even the nVidia driver (which is a kernel
> module, it canot be built and therefore ... ).
> 
> Dimitry, I put you into CC, just in case. It seems that the last commits
> (not only the new DRM2 mess) broke something.
> 
> I hope that others using FreeBSD 10.0CURRENT with CLANG can confirm this.\

Have you tried backing up to just before all of pjd@'s file descriptor and
capsicum commits?  It broke some other stuff initially related to fd passing,
so I don't think it is beyond imagination that it broke something with UNIX
domain sockets in general.

-- 
John Baldwin