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Bjoern A. Zeeb e2c532f156 carpstats are the last virtualised variable in the file and end up at the
end of the vnet_set.  The generated code uses an absolute relocation at
one byte beyond the end of the carpstats array.  This means the relocation
for the vnet does not happen for carpstats initialisation and as a result
the kernel panics on module load.

This problem has only been observed with carp and only on i386.
We considered various possible solutions including using linker scripts
to add padding to all kernel modules for pcpu and vnet sections.

While the symbols (by chance) stay in the order of appearance in the file
adding an unused non-file-local variable at the end of the file will extend
the size of set_vnet and hence make the absolute relocation for carpstats
work (think of this as a single-module set_vnet padding).

This is a (tmporary) hack.  It is the least intrusive one as we need a
timely solution for the upcoming release.  We will revisit the problem in
HEAD.  For a lot more information and the possible alternate solutions
please see the PR and the references therein.

PR:			230857
MFC after:		3 days
2018-11-01 17:26:18 +00:00
bin ps(1): Pet mandoc and igor 2018-10-31 17:47:08 +00:00
cddl dtrace(1): remove reference to dtruss that was removed from base 2018-10-31 15:29:26 +00:00
contrib mount_smbfs(8): Add the STANDARDS and HISTORY sections 2018-11-01 11:37:19 +00:00
crypto Update SHLIB_VERSION_NUMBER following the OpenSSL shared library 2018-10-25 18:46:45 +00:00
etc Run the csu tests on a DSO. This builds the tests into a shared library, 2018-10-30 09:43:26 +00:00
gnu Implement a BSD licensed crtbegin/crtend 2018-10-25 17:39:41 +00:00
include Reduce NL_ARGMAX to 4096 to match Linux. 2018-10-04 21:55:58 +00:00
kerberos5 Update the existing heimdal implementation for OpenSSL 1.1. 2018-10-05 16:35:24 +00:00
lib libbe(3): Don't promote non-cloned BEs 2018-11-01 14:00:56 +00:00
libexec Run unbound-anchor when root.key is empty, not just when it is absent. 2018-11-01 14:24:12 +00:00
release Pass _BRANCH in the reldoc target to ensure the correct 2018-10-29 21:03:43 +00:00
rescue rescue: Add bectl(8) 2018-10-31 20:42:18 +00:00
sbin In preparation for adding inode check-hashes, convert the clri(8) 2018-11-01 03:38:57 +00:00
secure Bump base OpenSSL libraries versions to avoid conflict with port's libraries. 2018-10-25 13:37:57 +00:00
share CMSG_DATA(3): Use consistent variable names 2018-11-01 15:40:57 +00:00
stand libsa: tftp should use calloc 2018-11-01 13:29:55 +00:00
sys carpstats are the last virtualised variable in the file and end up at the 2018-11-01 17:26:18 +00:00
targets Add -b/-l options to localedef(1) to specify output endianness and use 2018-10-20 20:51:05 +00:00
tests pf tests: Test ':0' ignoring link-local addresses 2018-10-28 05:37:15 +00:00
tools Introduce an EXPERIMENTAL option for both src.conf(5) and the kernel. 2018-10-30 15:46:30 +00:00
usr.bin usr.bin/sed/tests: fix one of the regression test cases by adding its 2018-10-31 15:04:41 +00:00
usr.sbin freebsd-update: add a progress report for the "fetching files..." 2018-10-31 17:37:54 +00:00
.arcconfig callsign isn't required anymore 2016-09-29 06:19:45 +00:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.gitattributes Remove spuriously added svn properties 2018-08-02 18:37:02 +00:00
.gitignore Ignore _.universe-toolchain file. 2018-07-01 13:50:37 +00:00
COPYRIGHT Remove 'All Rights Reserved' from the collection copyright and templates. 2018-05-09 02:02:49 +00:00
LOCKS LOCKS: update current locks 2018-06-09 03:08:04 +00:00
MAINTAINERS Add pointer to freebsd-numerics for libm. 2018-07-16 15:29:32 +00:00
Makefile Don't include the broken riscv64sf TARGET_ARCH in universe. 2018-10-09 22:22:15 +00:00
Makefile.inc1 Avoid binutils test in cleandir/obj stages 2018-10-31 18:08:12 +00:00
Makefile.libcompat Fix non-FreeBSD host lib32 build for TARGET=amd64 2018-08-23 18:19:10 +00:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc Add malloc_domainset(9) and _domainset variants to other allocator KPIs. 2018-10-30 18:26:34 +00:00
README README: add generic notes about GENERIC and NOTES 2018-06-17 19:44:24 +00:00
README.md README: add generic notes about GENERIC and NOTES 2018-06-17 19:44:24 +00:00
UPDATING Add updating entry for DRM 2018-10-20 19:14:46 +00:00

FreeBSD Source:

This is the top level of the FreeBSD source directory. This file was last revised on: FreeBSD

FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.

For copyright information, please see the file COPYRIGHT in this directory. Additional copyright information also exists for some sources in this tree - please see the specific source directories for more information.

The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7), config(8), https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html, and https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information, including setting make(1) variables.

Source Roadmap:

bin		System/user commands.

cddl		Various commands and libraries under the Common Development
		and Distribution License.

contrib		Packages contributed by 3rd parties.

crypto		Cryptography stuff (see crypto/README).

etc		Template files for /etc.

gnu		Various commands and libraries under the GNU Public License.
		Please see gnu/COPYING* for more information.

include		System include files.

kerberos5	Kerberos5 (Heimdal) package.

lib		System libraries.

libexec		System daemons.

release		Release building Makefile & associated tools.

rescue		Build system for statically linked /rescue utilities.

sbin		System commands.

secure		Cryptographic libraries and commands.

share		Shared resources.

stand		Boot loader sources.

sys		Kernel sources.

sys/<arch>/conf Kernel configuration files. GENERIC is the configuration
		used in release builds. NOTES contains documentation of
		all possible entries.

tests		Regression tests which can be run by Kyua.  See tests/README
		for additional information.

tools		Utilities for regression testing and miscellaneous tasks.

usr.bin		User commands.

usr.sbin	System administration commands.

For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see:

https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/current-stable.html