MFC r258661:
Add sysctl KERN_PROC_SIGTRAMP to retrieve signal trampoline location for the
given process.

Approved by:	re (gjb)
MFC r258660:
Fix sys/sysctl.h use for cc -m32 on amd64.

Approved by:	re (gjb)
MFC r258663:
Use sysctl KERN_PROC_SIGTRAMP to retrieve the signal trampoline
location for the native amd64 ABI.  This fixes unwinding over the
signal frame after trampoline was moved to the shared page.

Approved by:	re (gjb)
MFC r258574:

Only initialize some mutexes for the default VNET.

In r208160, sctp_it_ctl was made a global variable, across all VNETs.
However, sctp_init() is called for every VNET that is created.  This results
in the same global mutexes which are part of sctp_it_ctl being initialized.  This can result
in crashes if many jails are created.

To reproduce the problem:
  (1)  Take a GENERIC kernel config, and add options for: VIMAGE, WITNESS,
       INVARIANTS.
  (2)  Run this command in a loop:
       jail -l -u root -c path=/ name=foo persist vnet && jexec foo ifconfig lo0 127.0.0.1/8 && jail -r foo

       (see http://lists.freebsd.org/pipermail/freebsd-current/2010-November/021280.html )

Witness will warn about the same mutex being initialized.

Fix the problem by only initializing these mutexes in the default VNET.

MFC r258765:

In
http://svnweb.freebsd.org/changeset/base/258221
I introduced a bug which initialized global locks
whenever the SCTP stack initialized. This was fixed in
http://svnweb.freebsd.org/changeset/base/258574
by rodrigc@. He just initialized the locks for
the default vnet. This fix reverts to the old
behaviour before r258221, which explicitly makes
sure it is only called once, because this works also on
other platforms.

Approved by: re@ (gjb)
MFC r258738

Also mention that drill(1) can be used, now that nslookup and dig are no
longer in the base system.

Suggested by: peter
Approved by: re (gjb)
MFC r258737

In keg_dtor(), print out the keg name in the "Freed UMA keg was not empty"
message printed to the console.  This makes it easier to track down
the source of certain memory leaks.

Suggested by: adrian
Approved by: re (gjb)
MFC r258588

In sys/netpfil/ipfw/ip_fw_nat.c:vnet_ipfw_nat_uninit() we call "IPFW_WLOCK(chain);".
This lock gets deleted in sys/netpfil/ipfw/ip_fw2.c:vnet_ipfw_uninit().

Therefore, vnet_ipfw_nat_uninit() *must* be called before vnet_ipfw_uninit(),
but this doesn't always happen, because the VNET_SYSINIT order is the same for both functions.
In sys/net/netpfil/ipfw/ip_fw2.c and sys/net/netpfil/ipfw/ip_fw_nat.c,
IPFW_SI_SUB_FIREWALL == IPFW_NAT_SI_SUB_FIREWALL == SI_SUB_PROTO_IFATTACHDOMAIN
and
IPFW_MODULE_ORDER == IPFW_NAT_MODULE_ORDER

Consequently, if VIMAGE is enabled, and jails are created and destroyed,
the system sometimes crashes, because we are trying to use a deleted lock.

To reproduce the problem:
  (1)  Take a GENERIC kernel config, and add options for: VIMAGE, WITNESS,
       INVARIANTS.
  (2)  Run this command in a loop:
       jail -l -u root -c path=/ name=foo persist vnet && jexec foo ifconfig lo0 127.0.0.1/8 && jail -r foo

       (see http://lists.freebsd.org/pipermail/freebsd-current/2010-November/021280.html )

Fix the problem by increasing the value of IPFW_NAT_SI_SUB_FIREWALL,
so that vnet_ipfw_nat_uninit() runs after vnet_ipfw_uninit().

Approved by: re (gjb)
MFC 258591
In vnet_route_uninit(), free some memory that is allocated in vnet_route_init().

To reproduce the problem:
  (1)  Take a GENERIC kernel config, and add options for: VIMAGE, WITNESS,
       INVARIANTS.
  (2)  Run this command in a loop:
       jail -l -u root -c path=/ name=foo persist vnet && jexec foo ifconfig lo0 127.0.0.1/8 && jail -r foo

       see: http://lists.freebsd.org/pipermail/freebsd-current/2010-November/021280.html
            http://lists.freebsd.org/pipermail/freebsd-current/2010-November/021291.html

This doesn't eliminate all the "Freed UMA keg was not empty" warning messages
on the console, but it helps.

Approved by: re (gjb)
MFC r258790:

Fix hang on reboot with active iSCSI connections.

Approved by:	re (glebius)
Sponsored by:	The FreeBSD Foundation
MFC r258495:
Update description of logical CPU handling in the latest releases and
remove obsolete sysctl variable machdep.hlt_logical_cpus.

Approved by:	re (hrs)
MFC: r258718: fix emulated jail_v0 byte order

Approved by:	re (gjb)
MFC r258786, r258796, r258797, r258847, r258853, r258949:

r258786:
  Move OPTIONS_UNSET outside of the PBUILD_FLAGS variable, otherwise
  the textproc/docproj port build fails.

r258796 (hrs):
  - Prevent TARGET and TARGET_ARCH from being defined as empty when
    TARGET="" and/or TARGET_ARCH="" is specified.
  - Remove extra ().

r258797 (hrs):
  Use standard CLEANFILES/CLEANDIRS and clean target in bsd.obj.mk.

r258847:
  Provide reproducibility between builds by building pkg(8) from ports,
  instead of using pkg-bootstrap.

  This should resolve a problem that was discovered during 10.0-BETA4
  freebsd-update(8) builds,

r258853:
  Turn off the dvdrom target by default.  dvd1.iso is now built by
  specifying 'WITH_DVD=1' during 'make release'.

  This caused some problems during the freebsd-update builds for
  10.0-BETA4.

r258949:
  Ensure WITH_DVD is not empty to prevent 'WITH_DVD= ' from evaluating
  to true.

Approved by:	re (hrs)
Sponsored by:	The FreeBSD Foundation
MFC r258854:
  Fix PKG_ABI detection in bsdconfig(8) after pkg-1.2 is released, since
  the format of 'pkg -vv' output has changed.

Approved by:	re (hrs)
Sponsored by:	The FreeBSD Foundation
MFC r258914

Update release notes.

Submitted by: skreuzer
Approved by: re (delphij)
MFC r258830:
  Add support for BCM57764, BCM57767, BCM57782, BCM57786 and BCM57787.
  PR:	184304
  Approved by:	re (rodrigc)
Merge branch 'stable/10' of https://github.com/freebsd/freebsd into stable/10
Merge branch 'stable/10' of github.com:pcbsd/freebsd into stable/10