Re: HEADS UP: caution required with updates using custom kernels

On Fri, Jun 24, 2016 at 06:00:19AM +0200, O. Hartmann wrote:
> Am Thu, 23 Jun 2016 21:07:51 +0000
> Brooks Davis <brooks_at_freebsd.org> schrieb:
> 
> > Kernel config minimalists and those running aarch64 and riscv systems will
> > want to head this UPDATING message.
> > 
> > In practice, if you're fairly up to date, doing installworld before
> > installkernel will also work (I've tested that case from ALPHA4), but is
> > always somewhat risky.
> > 
> > -- Brooks
> > 
> > ----- Forwarded message from Brooks Davis <brooks_at_FreeBSD.org> -----
> > 
> > Date: Thu, 23 Jun 2016 21:02:05 +0000 (UTC)
> > From: Brooks Davis <brooks_at_FreeBSD.org>
> > To: src-committers_at_freebsd.org, svn-src-all_at_freebsd.org,
> > 	svn-src-head_at_freebsd.org
> > Subject: svn commit: r302152 - head
> > 
> > Author: brooks
> > Date: Thu Jun 23 21:02:05 2016
> > New Revision: 302152
> > URL: https://svnweb.freebsd.org/changeset/base/302152
> > 
> > Log:
> >   Add an UPDATING entry for the pipe() -> pipe2() transition.
> >   
> >   Approved by:	re (gjb)
> >   Sponsored by:	DARPA, AFRL
> > 
> > Modified:
> >   head/UPDATING
> > 
> > Modified: head/UPDATING
> > ==============================================================================
> > --- head/UPDATING	Thu Jun 23 20:59:13 2016	(r302151)
> > +++ head/UPDATING	Thu Jun 23 21:02:05 2016	(r302152)
> > _at__at_ -31,6 +31,14 _at__at_ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11
> >  	disable the most expensive debugging functionality run
> >  	"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
> >  
> > +20160622:
> > +	The the libc stub for the pipe(2) system call has been replaced with
> > +	a wrapper which calls the pipe2(2) system call and the pipe(2) is now
> > +	only implemented by the kernels which include "options
> > +	FREEBSD10_COMPAT" in their config file (this is the default).
> > +	Users should ensure that this option is enabled in their kernel
> > +	or upgrade userspace to r302092 before upgrading their kernel.
> > +
> >  20160527:
> >  	CAM will now strip leading spaces from SCSI disks' serial numbers.
> >  	This will effect users who create UFS filesystems on SCSI disks using
> > 
> > 
> > ----- End forwarded message -----
> 
> Is this showing up, when one doesn't have the expected COMPAT_FREEBSD10 in kernel and
> updated kernel __before___ world?:

You must include COMPAT_FREEBSD10 or have a new userspace.  Otherwise
things like your shell are unlikely to work.

-- Brooks

> 
> most recent CURRENT (FreeBSD 11.0-ALPHA4 #41 r302149: Thu Jun 23 21:58:25 CEST 2016
> amd64, custom kernel) dies when trying to
> 
> make buildworld 
> 
> or
> 
> make buildkernel/kernel
> 
> with the message shown below:
> 
> root_at_localhost: [src] make buildkernel
> *** Signal 12
> 
> Stop.
> make: stopped in /usr/src
> .ERROR_TARGET='buildkernel'
> .ERROR_META_FILE=''
> .MAKE.LEVEL='0'
> MAKEFILE=''
> .MAKE.MODE='normal'
> .CURDIR='/usr/src'
> .MAKE='make'
> .OBJDIR='/usr/obj/usr/src'
> .TARGETS='buildkernel'
> DESTDIR=''
> LD_LIBRARY_PATH=''
> MACHINE='amd64'
> MACHINE_ARCH='amd64'
> MAKEOBJDIRPREFIX='/usr/obj'
> MAKESYSPATH='/usr/src/share/mk'
> MAKE_VERSION='20160606'
> PATH='/sbin:/bin:/usr/sbin:/usr/bin'
> SRCTOP='/usr/src'
> OBJTOP='/usr/obj/usr/src'
> 
> Regards,
> 
> oh