FreeBSD_HEAD_amd64_gcc - Build #1448 - Fixed:

Build information: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc/1448/
Full change log: 
https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc/1448/changes
Full build log: 
https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc/1448/console

Change summaries:

303217 by bapt:
Do not try to delete the home of the user if is is not a directory for example
"/dev/null"

PR:             211195
Submitted by:   rday <r...@ryanday.net>
Reported by:    eniorm <eni...@gmail.com>
MFC after:      1 day

303213 by kib:
Addm missed required call to xo_finish() when only header is printed.

Reported by:    pho
Sponsored by:   The FreeBSD Foundation
MFC after:      1 week

303212 by bdrewery:
Move chown tests to proper path

Sponsored by:   EMC / Isilon Storage Division

303211 by kib:
Implement mtx_trylock_spin(9).

Discussed with: bde
Reviewed by:    jhb
Sponsored by:   The FreeBSD Foundation
MFC after:      1 week
Differential revision:  https://reviews.freebsd.org/D7192

303210 by ache:
1) POSIX defines well when GLOB_NOMATCH or original pattern
(instead) should be returned, so we can't return GLOB_NOMATCH blindly
just because we dislike something in the pattern.

2) Remove extra condition.

303209 by jhibbits:
Use label math instead of hard-coding offsets for return addresses.

Though the chances of the code in these sections changing are low, future-proof
the sections and use label math.

Renumber the surrounding areas to avoid duplicate label numbers.

303208 by ache:
1) We need the original pattern (in the next round of changes) not only in
case it fully constructed, but for half-constructed too, so have no
other choice to pass original pattern from glob() down to globextend()
instead of attempt to reconstruct I implement previously.

2) Instead of copy&paste the same big enough code, make function for it:
globfinal().

303205 by jhb:
Add a driver to create VF devices on Chelsio T4/T5 NICs.

Chelsio NICs are a bit unique compared to some other NICs in that they
expose different functionality on different physical functions.  In
particular, PF4 is used to manage the NIC interfaces ('t4nex' and 't5nex').
However, PF4 is not able to create VF devices.  Instead, VFs are only
supported by physical functions 0 through 3.  This commit adds 't4iov'
and 't5iov' drivers that attach to PF0-3.

One extra wrinkle is that the iov devices cannot enable SR-IOV until the
firwmare has been initialized by the main PF4 driver.  To handle this
case, a new t4_if kobj interface has been added to permit cross-calls
between the PF drivers.  The PF4 driver notifies sibling drivers when it
is fully attached.  It also requests sibling drivers to detach before it
detaches.  Sibling drivers query the PF4 driver during their attach
routine to see if it is attached.  If not, the sibling drivers defer
their attach actions until the PF4 driver informs them it is attached.

VF devices are associated with a single port on the NIC.  VF devices
created from PF0 are associated with the first port on the NIC, VFs
from PF1 are associated with the second port, etc.  VF devices can
only be created from a PF device that has an associated port.  Thus,
on a 2-port card, VFs are only supported on PF0 and PF1.

Reviewed by:    np (earlier versions)
MFC after:      1 month
Sponsored by:   Chelsio Communications

303204 by jhb:
Install a handler for firmware work request error messages.

If a driver sends an malformed or disallowed work request, the firmware
responds with a work request error.  Previously the driver treated this is
as an unexpected message and panicked.  Now it decodes the error message
to aid in debugging.

Reviewed by:    np (older version)
MFC after:      1 month
Sponsored by:   Chelsio Communications
Differential Revision:  https://reviews.freebsd.org/D6950

303203 by mizhka:
[new-committer:mizhka] add committer into graph

Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D7288

303202 by jhb:
Update after r303154 to note that operations on local files are safe.

303199 by np:
ctld(8): Fix MaxBurstLength negotiation.

The target must reply with the selected value of MaxBurstSize instead of
just echoing back the initiator's offered value.

Reviewed by:    mav@
Sponsored by:   Chelsio Communications
Differential Revision:  https://reviews.freebsd.org/D7278

303195 by bdrewery:
Don't run find(1) for __MPATH with NO_MODULES set.

It's a waste of time when it won't be used.

Submitted by:   bde
MFC after:      3 days

303190 by br:
Add GCC 6.1 warn flags for kernel as well.

Sponsored by:   DARPA, AFRL

303189 by br:
Set the soft-float flag for assembly code as well.
This fixes compilation with GCC 6.1.

Sponsored by:   DARPA, AFRL

303188 by br:
Add warn flags for GCC 6.1 compiler.

Sponsored by:   DARPA, AFRL

303187 by br:
Set real values for context/cursor sizes for RISC-V to prevent static
assertions.

Reviewed by:    emaste
Sponsored by:   DARPA, AFRL

303186 by manu:
PC5 doesn't have mmc2 function.

303183 by kib:
Make cam.ko loadable.

Sponsored by:   The FreeBSD Foundation
MFC after:      1 week

303182 by sephe:
hyperv/vmbus: Move vmbus bufring definition to vmbus_reg.h

And add more comment about its fields.

MFC after:      1 week
Sponsored by:   Microsoft OSTC
Differential Revision:  https://reviews.freebsd.org/D7269

303180 by sephe:
hyperv/vmbus: Cleanup and augment bufring sysctl tree creation

Binary state node is added, so that userland programs do not have
to parse human readable state string.

MFC after:      1 week
Sponsored by:   Microsoft OSTC
Differential Revision:  https://reviews.freebsd.org/D7268

303178 by sephe:
hyperv/vmbus: Cosmetic bufring cleanup.

MFC after:      1 week
Sponsored by:   Microsoft OSTC
Differential Revision:  https://reviews.freebsd.org/D7267

303171 by karels:
Fix per-connection L2 caching in fast path

r301217 re-added per-connection L2 caching from a previous change,
but it omitted caching in the fast path.  Add it.

Reviewed By: gallatin
Approved by: gnn (mentor)
Differential Revision: https://reviews.freebsd.org/D7239

303166 by imp:
Add opt_ddb.h.

MFC after: 1 week

303165 by imp:
Fix cam builds w/o nvme. This is a stop-gap fix until the real fix of
dynamically loading XPTs is done and tested.

MFC After: 1 week

303164 by jhb:
Add more documentation regarding unsafe AIO requests.

The asynchronous I/O changes made previously result in different
behavior out of the box. Previously all AIO requests failed with
ENOSYS / SIGSYS unless aio.ko was explicitly loaded. Now, some AIO
requests complete and others ("unsafe" requests) fail with EOPNOTSUPP.

Reword the introductory paragraph in aio(4) to add a general
description of AIO before describing the vfs.aio.enable_unsafe sysctl.

Remove the ENOSYS error description from aio_fsync(2), aio_read(2),
and aio_write(2) and replace it with a description of EOPNOTSUPP.

Remove the ENOSYS error description from aio_mlock(2).

Log a message to the system log the first time a process requests an
"unsafe" AIO request that fails with EOPNOTSUPP. This is modeled on
the log message used for processes using the legacy pty devices.

Reviewed by:    kib (earlier version)
MFC after:      1 week
Sponsored by:   Chelsio Communications
Differential Revision:  https://reviews.freebsd.org/D7151

303160 by cy:
Update leap-seconds to leap-seconds.3676752000.

As per https://datacenter.iers.org/web/guest/eop/-/somos/5Rgv/latest/16:

                                  UTC TIME STEP
                            on the 1st of January 2017

 A positive leap second will be introduced at the end of December 2016.
 The sequence of dates of the UTC second markers will be:

                          2016 December 31, 23h 59m 59s
                          2016 December 31, 23h 59m 60s
                          2017 January   1,  0h  0m  0s

 The difference between UTC and the International Atomic Time TAI is:

  from 2015 July 1, 0h UTC, to 2017 January 1 0h UTC   : UTC-TAI = - 36s
  from 2017 January 1, 0h UTC, until further notice    : UTC-TAI = - 37s

Obtained from:  ftp://tycho.usno.navy.mil/pub/ntp/leap-seconds.3676752000
See also:       https://www.iers.org/SharedDocs/News/EN/BulletinC.html
        https://datacenter.iers.org/web/guest/eop/-/somos/5Rgv/latest/16
MFC after:      1 week
Relnotes:       yes

303158 by emaste:
libmd: strip local absolute symbols (to link with lld)

Old versions of gas produce an invalid section index. That is ignored by
old versions of ld, but prevents a link with lld.

Submitted by:   Rafael Ávila de Espíndola (earlier version)
Reviewed by:    allanjude
Sponsored by:   The FreeBSD Foundation
Differential Revision:  https://reviews.freebsd.org/D6789

303157 by emaste:
libcxxrt: add padding in __cxa_allocate_* to fix alignment

The addition of the referenceCount to __cxa_allocate_exception put the
unwindHeader at offset 0x58 in __cxa_exception, but it requires 16-byte
alignment. In order to avoid changing the current __cxa_exception ABI
(and thus breaking its consumers), add explicit padding in the
allocation routines (and account for it when freeing).

This is intended as a lower-risk change for FreeBSD 11. A "more correct"
fix should be prepared for upstream and -CURRENT.

Reviewed by:    dim
MFC after:      3 days
Sponsored by:   The FreeBSD Foundation
Differential Revision:  https://reviews.freebsd.org/D7271

303156 by emaste:
Remove duplicate symbols from libroken version-script.map

Upstream commit r24759 (efed563) prefixed some symbols with rk_, but
introduced 6 duplicate symbols in the version script (because the
rk_-prefixed versions of the symbols were already present).

303155 by kib:
Hide counted_warning(9) under #ifdef _KERNEL braces, to allow building
subr_prf.c in userspace for libsbuf.

Sponsored by:   The FreeBSD Foundation
MFC after:      1 week

303154 by kib:
Declare aio requests on files from local filesystems safe.
Two notes:
- I allow AIO on reclaimed vnodes, since it is deterministically terminated
  fast.
- devfs mounts are marked as MNT_LOCAL, but device vnodes have type
  VCHR, so the slow device io is not allowed.

Reviewed by:    jhb
Sponsored by:   The FreeBSD Foundation
MFC after:      1 week
Differential revision:  https://reviews.freebsd.org/D7273

303153 by kib:
Remove spurious but harmless double-quote.

Noted by:       jhb

303151 by kib:
Provide counter_warning(9) KPI which allows to issue limited number of
warnings for some kernel events, mostly intended for the use of
obsoleted or otherwise undersired interfaces.

This is an abstracted and race-expelled code from compat pty driver.

Requested and reviewed by:      jhb
Sponsored by:   The FreeBSD Foundation
MFC after:      1 week
Differential revision:  https://reviews.freebsd.org/D7270

303150 by adrian:
[mx25l] add new device id.

Tested:

* (submitter) TP-Link TL-WR1043nd v3

Submitted by:   t...@enoti.me

303147 by pfg:
binutils: fix "Bad value" error in bfd for MIPS when using -Bsymbolic.

From OpenBSD's log:

Inspired by https://sourceware.org/ml/binutils/2010-08/msg00333.html,
but expressed differently so there are no GPLv3 issues.

Obtained from:  OpenBSD (CVS rev. 1.7)
MFC after:      1 month

303146 by pfg:
sed(1): Appease older GCC.

303145 by manu:
axp209 needs aw_nmi so attach a bit earlier

Reviewed by:    andrew
Differential Revision:  https://reviews.freebsd.org/D7081

303144 by manu:
We need the GIC to be attached so attach later at BUS_PASS_INTERRUPT + 
BUS_PASS_ORDER_LATE

Reviewed by:    andrew
MFC after:      1 week
Differential Revision:  https://reviews.freebsd.org/D7080

303143 by andrew:
Fix the build:
 * Add acpi_if.h to the SRC list in the uart module
 * Only include new acpi headers when they are needed

Obtained from:  ABT Systems Ltd
MFC after:      1 month
Sponsored by:   The FreeBSD Foundation

303142 by ache:
1) GLOB_BRACE was somewhat broken. First it repeatedly calls glob0() in
globexp1() recursive calls, but glob0() was not supposed to be called
repeatedly in the original code. It finalize results by possible adding
original pattern for no match case, may return GLOB_NOMATCH error and
by sorting all things. Original pattern adding or GLOB_NOMATCH error
can happens each time glob0() called repeatedly, and sorting happens
for one item only, all things are never sorted. Second, f.e. "a{a"
pattern does not match "a{a" file but match "a" file instead
(just one example, there are many). Third, some errors (f.e. for limits
or overflow) can be ignored by GLOB_BRACE code because it forces return (0).
Add non-finalizing flag to glob0() and make globexp0() wrapper around
recursively called globexp1() to finalize things like glob0() does.
Reorganize braces code to work correctly.

2) Don't allow MB_CUR_MAX * strlen overallocation hits GLOB_LIMIT_STRING
(ARG_MAX) limit, use final string length, not malloced space for it.

3) Revive DEBUG-ifdefed section.

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