jhb [Tue, 16 Feb 2016 21:36:48 +0000 (21:36 +0000)]
MFC 295418,295419:
Fix hangs or panics when misbehaved kernel threads return from their
main function.
295418:
Mark proc0 as a kernel process via the P_KTHREAD flag.
All other kernel processes have this flag set and all threads in proc0
(including thread0) have the similar TDP_KTHREAD flag set.
295419:
Call kthread_exit() rather than kproc_exit() for a premature kthread exit.
Kernel threads (and processes) are supposed to call kthread_exit() (or
kproc_exit()) to terminate. However, the kernel includes a fallback in
fork_exit() to force a kthread exit if a kernel thread's "main" routine
returns. This fallback was added back when the kernel only had processes
and was not updated to call kthread_exit() instead of kproc_exit() when
threads were added to the kernel.
This mistake was particularly exciting when the errant thread belonged to
proc0. Due to the missing P_KTHREAD flag the fallback did not kick in
and instead tried to return to userland via whatever garbage was in the
trapframe. With P_KTHREAD set it tried to terminate proc0 resulting in
other amusements.
dumbbell [Mon, 15 Feb 2016 07:35:40 +0000 (07:35 +0000)]
drm/i915: Restore pci_enable_busmaster() call in the init path
This fixes a GPU hang on i945GM.
While here, merge some minor fixes to DRM core and i915:
* Remove obsolete drm_agp_*_memory() prototypes
* Fix comment in drm_fops.c (outisde -> outside)
* Fix some formatting issues in drm_stub.c (spaces -> tabs)
kib [Sun, 14 Feb 2016 17:21:19 +0000 (17:21 +0000)]
MFC r294595:
When devfs dirent is freed, a vnode might still keep a pointer to it,
apparently. Interlock and clear the pointer to avoid free memory
dereference.
imp [Thu, 11 Feb 2016 23:43:27 +0000 (23:43 +0000)]
Merge from current r294767,294769,295408
r294767: Parse command line arguments in loader.fi
r294769: Allow newlines to be treated as whitespace when parsing args
r295408: Implement -P command line option in for EFI booting.
smh [Thu, 11 Feb 2016 17:56:09 +0000 (17:56 +0000)]
Fix ia64 build failures in EFI platform
The MFC of the recent EFI work to stable/10 caused build breakage
under ia64.
It was not apparent that there was EFI code outside the EFI tree as
this is not the case in HEAD, however in stable/10 there is for ia64.
This change does the following:
* Re-enables libefi for ia64 under gcc.
* Adds the ignore for unsupported pragma's when building libefi for ia64.
* Adds the missing parameter to efi_handle_lookup in the ia64 loader.
This is a direct commit as ia64 is no longer supported after 10.x
arybchik [Thu, 11 Feb 2016 16:39:30 +0000 (16:39 +0000)]
MFC r295467
sfxge: implement SIOCGI2C to read information from phy modules
The IOCTL is used by 'ifconfig -v' to show SFP+/QSFP+ information
including inventory information and dianostics (temperature, light
levels, voltage etc).
Reviewed by: gnn,melifaro
Approved by: re (gjb)
Sponsored by: Solarflare Communications, Inc.
jhb [Wed, 10 Feb 2016 18:29:37 +0000 (18:29 +0000)]
Adjust initialization of random(9) so it is usable earlier.
A few existing SYSINITs expect the in-kernel PRNG (random(9)) to be
useable at SI_SUB_RANDOM / SI_ORDER_ANY. However, the random(4) overhaul
merged for 10.0 performs all of its initialization at SI_SUB_DRIVERS
(since it is tied in with creating the /dev/random character device).
This has changed in HEAD where the random initialization is split such
that the in-kernel random(9) is initialized at SI_SUB_RANDOM and the
supporting bits for userland random(4) (such as /dev/random) are initialized
later.
However, the changes in HEAD are large and invasive. Instead, this change
is being directly committed to stable/10.
This change moves most of the random(9)/random(4) initialization to
SI_SUB_RANDOM with the exception that the creation of the harvesting kernel
process and the /dev/random character device are deferred to new
SYSINITs that run at SI_SUB_DRIVERS.
This fixes the "random device not loaded; using insecure entropy" message
output during boot on some systems.
PR: 205800
Reviewed by: markm, so@
Approved by: so
Approved by: re (gjb)
Tested by: Mark Saad <nonesuch@longcount.org>
cy [Wed, 10 Feb 2016 07:16:17 +0000 (07:16 +0000)]
MFC r289421, r293037, r294773, and r294884.
ntp leap-leapseconds support.
r289421:
Add default leap-seconds file. This should help ntp networks get the
leap second date correct
Updates to the file can be obtained from ftp://time.nist.gov/pub/ or
ftp://tycho.usno.navy.mil/pub/ntp/.
r293037:
Update leap-seconds to latest. This will satisfy the ntpd leap-second
version check.
r294773:
Add support for automatic leap-second file updates.
The working copy of leapfile resides in /var/dbntpd.leap-seconds.list.
/etc/ntp/leap-seconds (periodically updated from ftp://time.nist.gov/pub/
or ftp://tycho.usno.navy.mil/pub/ntp/) contains the master copy should
automatic leapfile updates be disabled (default).
Automatic leapfile updates are fetched from $ntp_leapfile_sources,
defaulting to https://www.ietf.org/timezones/data/leap-seconds.list,
within $ntp_leapfile_expiry_days (default 30 days) from leap-seconds
file expiry. Automatic updates can be enabled by setting
$daily_ntpd_leapfile_enable="YES" in periodic.conf. To avoid congesting
the ntp leapfile source the automatic update randomized by default but
can be disabled through daily_ntpd_avoid_congestion="NO" in
periodic.conf.
r294884:
Allow specification of fetch options for ntp leap-seconds fetch.
jhb [Wed, 10 Feb 2016 00:08:51 +0000 (00:08 +0000)]
MFC 287442,287537,288944:
Fix corruption of coredumps due to procstat notes changing size during
coredump generation. The changes in r287442 required some reworking
since the 'fo_fill_kinfo' file op does not exist in stable/10.
Coredump notes depend on being able to invoke dump routines twice; once
in a dry-run mode to get the size of the note, and another to actually
emit the note to the corefile.
When a note helper emits a different length section the second time
around than the length it requested the first time, the kernel produces
a corrupt coredump.
NT_PROCSTAT_FILES output length, when packing kinfo structs, is tied to
the length of filenames corresponding to vnodes in the process' fd table
via vn_fullpath. As vnodes may move around during dump, this is racy.
So:
- Detect badly behaved notes in putnote() and pad underfilled notes.
- Add a fail point, debug.fail_point.fill_kinfo_vnode__random_path to
exercise the NT_PROCSTAT_FILES corruption. It simply picks random
lengths to expand or truncate paths to in fo_fill_kinfo_vnode().
- Add a sysctl, kern.coredump_pack_fileinfo, to allow users to
disable kinfo packing for PROCSTAT_FILES notes. This should avoid
both FILES note corruption and truncation, even if filenames change,
at the cost of about 1 kiB in padding bloat per open fd. Document
the new sysctl in core.5.
- Fix note_procstat_files to self-limit in the 2nd pass. Since
sometimes this will result in a short write, pad up to our advertised
size. This addresses note corruption, at the risk of sometimes
truncating the last several fd info entries.
- Fix NT_PROCSTAT_FILES consumers libutil and libprocstat to grok the
zero padding.
287537:
Follow-up to r287442: Move sysctl to compiled-once file
Avoid duplicate sysctl nodes.
288944:
Fix core corruption caused by race in note_procstat_vmmap
This fix is spiritually similar to r287442 and was discovered thanks to
the KASSERT added in that revision.
NT_PROCSTAT_VMMAP output length, when packing kinfo structs, is tied to
the length of filenames corresponding to vnodes in the process' vm map
via vn_fullpath. As vnodes may move during coredump, this is racy.
We do not remove the race, only prevent it from causing coredump
corruption.
- Add a sysctl, kern.coredump_pack_vmmapinfo, to allow users to disable
kinfo packing for PROCSTAT_VMMAP notes. This avoids VMMAP corruption
and truncation, even if names change, at the cost of up to PATH_MAX
bytes per mapped object. The new sysctl is documented in core.5.
- Fix note_procstat_vmmap to self-limit in the second pass. This
addresses corruption, at the cost of sometimes producing a truncated
result.
- Fix PROCSTAT_VMMAP consumers libutil (and libprocstat, via copy-paste)
to grok the new zero padding.
emaste [Tue, 9 Feb 2016 22:32:24 +0000 (22:32 +0000)]
MFC boot loader path and RBX constant deduplication
r294765 (imp)
Move all the separate copies of the same strings into paths.h. There's
nothing machine specific about these.
r294765 (imp)
RBX_ defines are in rbx.h, move it there.
r294847 (imp)
Remove static from these two. They slipped through the cracks.
r294925 (imp)
Fix mistake when transitioning to the new defines with ZFS loader. I
hate adding yet another define, but it is the lessor of the evil
choices available. Kill another evil by removing PATH_BOOT3 and
replacing it with PATH_LOADER or PATH_LOADER_ZFS as appropriate.
Since r256624 (head) we have been leaking routing table allocations
on vnet enabled jail shutdown. Call the provided cleanup
routines for IP versions 4 and 6 to plug these leaks.
Sponsored by: The FreeBSD Foundation
Reviewed by: gnn
Differential Revision:https://reviews.freebsd.org/D4530
Try to fix a bug introduced in r228623 (head).
We started to copy the ifa_msghdr as otherwise platforms with strict
alignment would break. It is unclear to me if there's also a problem with
access to the address list following the structure.
However we never copied the address list after the structure and thus are
pointing at random memory. For now just use a pointer to the original
memory for accessing the address list making it at least work on
platforms with weak memory access.
PR: 195445
Reported by: wolfgang lyxys.ka.sub.org
Tested by: wolfgang lyxys.ka.sub.org (x86)
pfg [Sat, 6 Feb 2016 16:58:56 +0000 (16:58 +0000)]
MFC r295209;
Revert r294695; passthrough any extra timestamps to the dinode struct.
The original ext2fs change worked fine on disks formated with default
values, but it was the cause of a regression when inodes are small.
Revert it for now, while we figure out safer ways pass such values,
marius [Thu, 4 Feb 2016 23:56:01 +0000 (23:56 +0000)]
MFC: r295133
As it turns out, one of the more or less recent changes to em(4)
causes watchdog timeouts when using TSO4 at link speeds below
Gigabit, at least with 82573E. So disable the assist automatically
when at lower speeds.
gnn [Thu, 4 Feb 2016 22:53:12 +0000 (22:53 +0000)]
MFC: r290383,295282,295283
Replace the fastforward path with tryforward which does not require a
sysctl and will always be on. The former split between default and
fast forwarding is removed by this commit while preserving the ability
to use all network stack features.
tuexen [Wed, 3 Feb 2016 14:04:07 +0000 (14:04 +0000)]
MFC r294995:
Always look in the TCP pool.
This fixes issues with a restarting peer when the listening
1-to-1 style socket is closed.
MFC r295021:
Remove debug output which was committed by accident.
Thanks to Oliver Pinter for reporting.
MFC r295069:
Ignore peer addresses in a consistent way also when checking for
new addresses during restart. If this is not done, restart doesn't
work when the local socket is IPv4 only and the peer uses
IPv4 and IPv6 addresses.
MFC r295070:
Don't change the remote UDP encapsulation port for SCTP packets
containing an INIT chunk.
MFC r295072:
Don't allow a remote encapsulation port change during the
SCTP restart procedure.
MFC r295075:
Update the path mtu when turning on/off UDP encapsulation for SCTP.
MFC r295077:
Add missing parentheses. This was reported by ccaughie via GitHub
for the userland stack.
kib [Tue, 2 Feb 2016 14:16:07 +0000 (14:16 +0000)]
MFC r294311:
Clear whole XMM register file instead of only XMM0. Also clear x87
registers. This brings amd64 on par with i386, providing consistent
initial FPU state.
PR: 206370
MFC r294312:
Use ANSI definitions. Wrap long line.
MFC r294313:
Adjust i386 comment to match amd64 one after r294311.
jhb [Mon, 1 Feb 2016 23:07:31 +0000 (23:07 +0000)]
MFC 278320,278336,278830,285621:
Add devctl(8): a utility for manipulating new-bus devices. Note that
this version does not include the 'suspend' and 'resume' commands
present in HEAD as those depend on larger changes to the suspend and
resume code in the kernel.
278320:
Add a new device control utility for new-bus devices called devctl. This
allows the user to request administrative changes to individual devices
such as attach or detaching drivers or disabling and re-enabling devices.
- Add a new /dev/devctl2 character device which uses ioctls for device
requests. The ioctls use a common 'struct devreq' which is somewhat
similar to 'struct ifreq'.
- The ioctls identify the device to operate on via a string. This
string can either by the device's name, or it can be a bus-specific
address. (For unattached devices, a bus address is the only way to
locate a device.) Bus drivers register an eventhandler to claim
unrecognized device names that the driver recognizes as a valid address.
Two buses currently support addresses: ACPI recognizes any device
in the ACPI namespace via its full path starting with "\" and
the PCI bus driver recognizes an address specification of
'pci[<domain>:]<bus>:<slot>:<func>' (identical to the PCI selector
strings supported by pciconf).
- To make it easier to cut and paste, change the PnP location string
in the PCI bus driver to output a full PCI selector string rather
than 'slot=<slot> function=<func>'.
- Add a devctl(3) interface in libdevctl which provides a wrapper around
the ioctls and is the preferred interface for other userland code.
- Add a devctl(8) program which is a simple wrapper around the requests
supported by devctl(3).
- Add a resource_unset_value() function that can be used to remove a
hint from the kernel environment. This is used to clear a
hint.<driver>.<unit>.disabled hint when re-enabling a boot-time
disabled device.
278336:
Unbreak the build (memchr is explicitly required by devctl(9) after r278320)
marius [Mon, 1 Feb 2016 22:16:41 +0000 (22:16 +0000)]
MFC: r295032
Use '^[>+][^+]' instead of '^[>+]' with grep(1) when filtering the
diff(1) output between two files in "new_only"-mode. Otherwise,
with the default of using unified format a remnant of the header
in the output is the result. This is especially irritating when
the two files differ but the second one is empty, amounting to the
vestige of the header being the only readout.
Reported by: Stefan Haemmerl
dteske [Mon, 1 Feb 2016 00:44:29 +0000 (00:44 +0000)]
MFC revisions 294860,294862,294892-294893,294922
r294860: Add keep_tite configuration option
r294862: Bump copyrights
r294892: Remove unused function prototype
r294893: Fix a crash if `-D' is used without `-t title'
r294922: Fix fatal warn when compiling under GCC 5.2.0
brooks [Thu, 28 Jan 2016 22:57:09 +0000 (22:57 +0000)]
MFC r294515:
Fix the implementations of PSEUDO_NOERROR and PSEUDO.
The PSEUDO* macros should not declare <syscall>, only _<syscall> and
__sys_<syscall>. This was causing the interposing C wrappers to be
ignored due to link order.
hiren [Thu, 28 Jan 2016 21:30:49 +0000 (21:30 +0000)]
MFC r294840
Persist timers TCPTV_PERSMIN and TCPTV_PERSMAX are hardcoded with 5 seconds and
60 seconds, respectively. Turn them into sysctls that can be tuned live. The
default values of 5 seconds and 60 seconds have been retained.
pfg [Thu, 28 Jan 2016 02:19:47 +0000 (02:19 +0000)]
MFC r294695:
ext2fs: passthrough any extra timestamps to the dinode struct.
In general we don't trust any of the extended timestamps unless the
EXT2F_ROCOMPAT_EXTRA_ISIZE feature is set. However, in the case where
we freshly allocated a new inode the information is valid and it is
better to pass it along instead of leaving the value undefined.
This should have no practical effect but should reduce the amount of
garbage if EXT2F_ROCOMPAT_EXTRA_ISIZE is set, like in cases where the
filesystem is converted from ext3 to ext4.
emaste [Thu, 28 Jan 2016 01:45:15 +0000 (01:45 +0000)]
MFC r294530: Add STB_GNU_UNIQUE symbol binding definition
Red Hat created STB_GNU_UNIQUE to handle certain special cases relating
to dynamically loading C++ DSOs[1].
We don't (currently) have support for STB_GNU_UNIQUE, but ought to
reserve the value in ELFNN_ST_BIND. This will also be used by an
upcoming ELF Tool Chain import.
jamie [Thu, 28 Jan 2016 00:41:07 +0000 (00:41 +0000)]
MFC r294749:
Allow the (old rc-style) exec_afterstart jail parameters to start numbering
at 0, like exec_prestart and the others do. Make param0 optional, i.e.
still look for param1.
jilles [Wed, 27 Jan 2016 22:56:04 +0000 (22:56 +0000)]
MFC r294565: sem: Don't free nameinfo that is still in list when open()
fails.
This bug could be reproduced easily by calling sem_open() with O_CREAT |
O_EXCL on a semaphore that is already open in the process. The struct
sem_nameinfo would be freed while still in sem_list and later calls to
sem_open() or sem_close() could access freed memory.
marius [Wed, 27 Jan 2016 22:50:04 +0000 (22:50 +0000)]
- Add an entry for the SIIG Cyber 2SP1 PCIe adapter, which is based
on an Oxford Semiconductor OX16PCI954 but uses only two ports and
a non-default clock rate. [1]
- Add entries for the more prominent members of the Digi International
Neo series, which are based on Exar PCI chips.
Tested by: Patrick Powell
- Mark some unused parameters as such.
- Fix style/whitespace
marius [Wed, 27 Jan 2016 22:48:04 +0000 (22:48 +0000)]
MFC: r294362, r294414, r294753
- Fix tty_drain() and, thus, TIOCDRAIN of the current tty(4) incarnation
to actually wait until the TX FIFOs of UARTs have be drained before
returning. This is done by bringing the equivalent of the TS_BUSY flag
found in the previous implementation back in an ABI-preserving way.
Reported and tested by: Patrick Powell
- Make the code consistent with itself style-wise and bring it closer
to style(9).
- Mark unused arguments as such.
- Make the ttystates table const.
marius [Wed, 27 Jan 2016 22:31:08 +0000 (22:31 +0000)]
Sync the e1000 drivers with what's in head as of r294327, modulo parts
that don't apply to stable/10 (driver API, if_inc_counter(), RSS changes
etc.) and modulo r287465 (which reportedly breaks igb(4)), i. e. assorted
fixes and improvements only:
o MFC r267385 (partial):
- Don't compare bus_dma map pointers for static DMA allocations against
NULL to determine if bus_dmamap_unload() or bus_dmamem_free() should be
called. Instead, check the associated bus and virtual addresses.
- Don't clear static DMA maps to NULL.
o MFC r284933:
Delete the refernce to VLAN handling being disabled by default. This is
no longer the case. [1]
o MFC r285639:
Add an adapter CORE lock in the DDB hook em_dump_queue to avoid WITNESS
panic in em_init_locked() while debugging.
o MFC r285879:
- Remove unused txd_saved.
- Intialize txd_upper, txd_lower and txd_used at declaration.
o MFC r286162:
Free mbufs when busdma loading fails.
o MFC r286829:
Add capability to disable CRC stripping as it breaks IPMI/BMC capabilities
on certain adatpers. [2]
o MFC r286831: [3]
- Increase EM_MAX_SCATTER to 64 such that the size of em_xmit()::
segs[EM_MAX_SCATTER] doesn't get overrun by things like NFS that can
and do shove more than 32 segs when being used with em(4) and TSO4.
- Update tso handling code in em_xmit() with update from jhb@
- Set if_hw_tsomax, if_hw_tsomaxsegcount and if_hw_tsomaxsegsize to
appropriate values.
- Define a TSO workaround "magic" number of 4 that is used to avoid an
alignment issue in hardware.
- Change a couple of integer values that were used as booleans to actual
bool types.
- Ensure that em_enable_intr() enables the appropriate mask of interrupts
and not just a hardcoded define of values.
o MFC r286832:
e1000/if_lem.c bump to 1.1.0
o MFC r286833:
Bump all copywrite dates to 2015.
o MFC r287112:
Style/whitespace cleanup in shared/common code.
o MFC r293331:
- Switch em(4) to the extended RX descriptor format.
- Split rxbuffer and txbuffer apart to support the new RX descriptor
format structures. Move rxbuffer manipulation to em_setup_rxdesc() to
unify the new behavior changes.
- Add a RSSKEYLEN macro for help in generating the RSSKEY data structures
in the card.
- Change em_receive_checksum() to process the new rxdescriptor format
status bit.
o MFC r293332:
Disable the reuse of checksum offload context descriptors in the case
of multiple queues in em(4). Document errata in the code.
o MFC r293854:
Given that em(4), lem(4) and igb(4) hardware doesn't require the
alignment guarantees provided by m_defrag(9), use m_collapse(9)
instead for performance reasons.
While at it, sanitize the statistics softc members, i. e. retire
unused ones and add SYSCTL nodes missing for actually used ones.
delphij [Wed, 27 Jan 2016 07:28:55 +0000 (07:28 +0000)]
MFC r294900:
Implement AT_SECURE properly.
AT_SECURE auxv entry has been added to the Linux 2.5 kernel to pass a
boolean flag indicating whether secure mode should be enabled. 1 means
that the program has changes its credentials during the execution.
Being exported AT_SECURE used by glibc issetugid() call.
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