svn commit: r316874 - head/sys/kern

[Maxim Sobolev]

Thanks, Peter. I will try to look into this asap.

-Max

On Apr 14, 2017 12:32 PM, "Peter Wemm" <peter at wemm.org> wrote:

> 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