svn commit: r316874 - head/sys/kern

[Peter Wemm]

On Friday, April 14, 2017 11:49:26 AM Peter Wemm wrote:
> On Friday, April 14, 2017 05:23:28 PM Maxim Sobolev wrote:
> > Author: sobomax
> > Date: Fri Apr 14 17:23:28 2017
> > New Revision: 316874
> > URL: https://svnweb.freebsd.org/changeset/base/316874
> > 
> > Log:
> >   Restore ability to shutdown DGRAM sockets, still forcing ENOTCONN to be
> > 
> > returned by the shutdown(2) system call. This ability has been lost as
> > part
> > of the svn revision 285910.
> > 
> >   Reviewed by:	ed, rwatson, glebius, hiren
> >   MFC after:	2 weeks
> >   Differential Revision:	https://reviews.freebsd.org/D10351
> 
> This appears to have broken syslogd and had a major change in behavior with
> regards to select(2).
> 
> If you run syslogd with the -s flag (which is default), it now spins at 100%
> cpu as all the shutdown sockets now return readable from select.
> 
> Old releases / jails also manifest this behavor.  If it wasn't for losing
> the ability to run old branch binaries I'd suggest changing syslogd
> instead, but we depend on this in the cluster and I expect others do too.
> 
> I'm not 100% certain that this change is the culprit but a heads-up can't
> hurt. I'll try reverting it on the freebsd cluster next, after fixing the
> broken auditing changes.
> 
> -Peter

I can confirm that reverting r316874 fixes syslogd and backwards compatability 
with old branches.

-- 
Peter Wemm - peter at wemm.org; peter at FreeBSD.org; peter at yahoo-inc.com; KI6FJV
UTF-8: for when a ' or ... just won\342\200\231t do\342\200\246
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