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Konstantin Belousov 4b48959f9f Enforce the maxproc limitation before allocating struct proc, initial
struct thread and kernel stack for the thread.  Otherwise, a load
similar to a fork bomb would exhaust KVA and possibly kmem, mostly due
to the struct proc being type-stable.

The nprocs counter is changed from being protected by allproc_lock sx
to be an atomic variable.  Note that ddb/db_ps.c:db_ps() use of nprocs
was unsafe before, and is still unsafe, but it seems that the only
possible undesired consequence is the harmless warning printed when
allproc linked list length does not match nprocs.

Diagnosed by:	Svatopluk Kraus <onwahe@gmail.com>
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2015-10-08 11:07:09 +00:00
bin Call sync consistently using atf_check 2015-10-06 01:00:12 +00:00
cddl Have lockstat(1) trace locks by name rather than by address. 2015-09-30 05:46:56 +00:00
contrib Add std::uncaught_exceptions() to libcxxrt (C++17, see N4152 and N4259). 2015-10-05 17:47:23 +00:00
crypto Fix OpenSSH multiple vulnerabilities by backporting three changes 2015-08-25 20:48:37 +00:00
etc Add -n to the ntpq command line so it will show IP addresses instead of 2015-10-08 08:55:08 +00:00
gnu Updated depends 2015-10-07 00:43:05 +00:00
include Mute this cookie as well 2015-10-03 17:28:46 +00:00
kerberos5 Add more SUBDIR_PARALLEL. 2015-09-26 14:13:51 +00:00
lib Move SHLIBDIR?=/lib before <src.opts.mk> so that it works again. 2015-10-08 01:17:45 +00:00
libexec Annotate arm userspace assembler sources stating their tolerance to 2015-09-29 16:09:58 +00:00
release Use print as a function, not operator. 2015-10-08 03:28:15 +00:00
rescue META_MODE: Remove DEP_MACHINE from Makefile.depend files. 2015-09-25 19:44:01 +00:00
sbin Only print the errno string in case sysctl(3) does not file with ENOENT 2015-10-07 09:28:54 +00:00
secure Replace afterinstall: hack from r111083 with 'make delete-old' functionality. 2015-09-19 03:46:10 +00:00
share Add option -l for specifying which OS loader to dlopen(3). By default 2015-10-08 02:28:22 +00:00
sys Enforce the maxproc limitation before allocating struct proc, initial 2015-10-08 11:07:09 +00:00
targets All the games moved to usr.bin/ in r288485. 2015-10-02 17:58:16 +00:00
tests Tweak: use 'mainlwp' instead of 'mainpid' since this is a thread (LWP) 2015-10-06 22:59:00 +00:00
tools Merge ^/head r288197 through r288456. 2015-10-01 19:02:45 +00:00
usr.bin Properly format pointer size independent CloudABI system calls. 2015-10-08 05:27:45 +00:00
usr.sbin Fix for r288176 changes related to debug symbols move. 2015-10-08 09:46:35 +00:00
.arcconfig Add repository.callsign, to help arcanist figure out what repo it's 2015-07-02 22:23:52 +00:00
.arclint phabricator related changes: 2015-04-20 20:33:22 +00:00
COPYRIGHT Bump copyright year. 2014-12-31 10:00:43 +00:00
LOCKS
MAINTAINERS Remove cokane@ from MAINTAINERS for 3dfx(4)/tdfx(4) because their email 2014-11-25 05:25:12 +00:00
Makefile Fix the .MAKE added in r251750 to properly support the historical -n -n. 2015-09-29 18:57:30 +00:00
Makefile.inc1 The latest version of lex requires the latest m4 to build, add a dependency 2015-10-05 17:45:13 +00:00
ObsoleteFiles.inc Update dates in UPDATING and ObsoleteFiles.inc. 2015-10-06 16:26:07 +00:00
README README: changes and fixups 2015-04-19 07:16:44 +00:00
UPDATING Update dates in UPDATING and ObsoleteFiles.inc. 2015-10-06 16:26:07 +00:00

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

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)
and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html
for more information, including setting make(1) variables.

The `buildkernel` and `installkernel` targets build and install
the kernel and the modules (see below).  Please see the top of
the Makefile in this directory for more information on the
standard build targets and compile-time flags.

Building a kernel is a somewhat more involved process.  See build(7), config(8),
and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html
for more information.

Note: If you want to build and install the kernel with the
`buildkernel` and `installkernel` targets, you might need to build
world before.  More information is available in the handbook.

The kernel configuration files reside in the sys/<arch>/conf
sub-directory.  GENERIC is the default configuration used in release builds.
NOTES contains entries and documentation for all possible
devices, not just those commonly used.


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.

games		Amusements.

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.

sys		Kernel sources.

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:

  http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html