We're accidentally returning the wrong variable. "cmode" is
uninitialized at this point so it causes a static checker warning.
Fixes: 6335e9f244 ("net: dsa: mv88e6xxx: mv88e6390X SERDES support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Simon Horman says:
====================
nfp: add flower app with representors
this series adds a flower app to the NFP driver.
It initialises four types of netdevs:
* PF netdev - lower-device for communication of packets to device
* PF representor netdev
* VF representor netdevs
* Phys port representor netdevs
The PF netdev acts as a lower-device which sends and receives packets to
and from the firmware. The representors act as upper-devices. For TX
representors attach a metadata dst to the skb which is used by the PF
netdev to prepend metadata to the packet before forwarding the firmware. On
RX the PF netdev looks up the representor based on the prepended metadata
received from the firmware and forwards the skb to the representor after
removing the metadata.
Control queues are used to send and receive control messages which are
used to communicate configuration information with the firmware. These
are in separate vNIC to the queues belonging to the PF netdev. The control
queues are not exposed to use-space via a netdev or any other means.
The first 9 patches of this series provide app-independent infrastructure
to instantiate representors and the remaining 3 patches provide an app
which uses this infrastructure.
As the name implies this app is targeted at providing offload of TC flower.
Flower offload - allowing classifiers to be attached to representor netdevs
- is intended to be provided by follow-up patches at which point it will
become the dominant feature of the app.
Minor changes since v2 noted in changelogs of individual patches.
Review of v1 and v2 of this patchset have been addressed either
through discussion on-list or changes in this patchset.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Initialise VF and PF representors in flower app.
Based in part on work by Benjamin LaHaise, Bert van Leeuwen and
Jakub Kicinski.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add app for flower offload. At this point the PF netdev and phys port
representor netdevs are initialised. Follow-up work will add support for
VF and PF representors and beyond that offloading the flower classifier.
Based in part on work by Benjamin LaHaise and Bert van Leeuwen.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In preparation for adding a new flower app - targeted at offloading
the flower classifier - provide support for control message that it will
use to communicate with the NFP.
Based in part on work by Bert van Leeuwen.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allow tx/rx with metadata port id. This will be used for tx/rx of
representor netdevs acting as upper-devices while a pf netdev acts
as a lower-device.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Provide port rather than vNIC as parameter of nfp_net_get_mac_addr.
This is to allow this function to be used by representor netdevs where
a vNIC may have more than one physical port none of which are associated
with the vNIC.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add app-callbacks for app-specific initialisation of SRIOV.
Disabling SRIOV is brought forward in nfp_pci_remove()
so that nfp_app_sriov_disable is called while the app still exists.
This is intended to be used to implement representor netdevs for virtual
ports.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Provide helpers for stats and xmit on representor netdevs.
Parts based on work by Bert van Leeuwen, Benjamin LaHaise and
Jakub Kicinski.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Provide infrastructure to create and destroy representors of a given type.
Parts based on work by Bert van Leeuwen, Benjamin LaHaise,
and Jakub Kicinski.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If present map mac_stats and vf_cfg BARs. These will be used by
representor netdevs to read statistics for phys port and vf representors.
Also provide defines describing the layout of the mac_stats area.
Similar defines are already present for the cf_cfg area.
Based in part on work by Jakub Kicinski.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move MAC/PHY port init into a helper to make it easier to reuse
it in the representor code.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add app callback for reporting eswitch mode. Non-SRIOV apps
should not implement this callback, nfp_app code will then
respond with -EOPNOTSUPP.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Switches and modern SR-IOV enabled NICs may multiplex traffic from Port
representators and control messages over single set of hardware queues.
Control messages and muxed traffic may need ordered delivery.
Those requirements make it hard to comfortably use TC infrastructure today
unless we have a way of attaching metadata to skbs at the upper device.
Because single set of queues is used for many netdevs stopping TC/sched
queues of all of them reliably is impossible and lower device has to
retreat to returning NETDEV_TX_BUSY and usually has to take extra locks on
the fastpath.
This patch attempts to enable port/representative devs to attach metadata
to skbs which carry port id. This way representatives can be queueless and
all queuing can be performed at the lower netdev in the usual way.
Traffic arriving on the port/representative interfaces will be have
metadata attached and will subsequently be queued to the lower device for
transmission. The lower device should recognize the metadata and translate
it to HW specific format which is most likely either a special header
inserted before the network headers or descriptor/metadata fields.
Metadata is associated with the lower device by storing the netdev pointer
along with port id so that if TC decides to redirect or mirror the new
netdev will not try to interpret it.
This is mostly for SR-IOV devices since switches don't have lower netdevs
today.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
When mc configuration changes bnx2x_config_mcast() can return 0 for
success, negative for failure and positive for benign reason preventing
its immediate work, e.g., when the command awaits the completion of
a previously sent command.
When removing all configured macs on a 578xx adapter, if a positive
value would be returned driver would errneously log it as an error.
Fixes: c7b7b483cc ("bnx2x: Don't flush multicast MACs")
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- fix warnings of host programs
- fix "make tags" when COMPILE_SOURCE=1 is specified along with O=
- clarify help message of C=1 option
- fix dependency for ncurses compatibility check
- fix "make headers_install" for fakechroot environment
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=yDPZ
-----END PGP SIGNATURE-----
Merge tag 'kbuild-fixes-v4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
"Nothing scary, just some random fixes:
- fix warnings of host programs
- fix "make tags" when COMPILED_SOURCE=1 is specified along with O=
- clarify help message of C=1 option
- fix dependency for ncurses compatibility check
- fix "make headers_install" for fakechroot environment"
* tag 'kbuild-fixes-v4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kconfig: fix sparse warnings in nconfig
kbuild: fix header installation under fakechroot environment
kconfig: Check for libncurses before menuconfig
Kbuild: tiny correction on `make help`
tags: honor COMPILED_SOURCE with apart output directory
genksyms: add printf format attribute to error_with_pos()
Pull timer fix from Eric Biederman:
"This fixes an issue of confusing injected signals with the signals
from posix timers that has existed since posix timers have been in the
kernel.
This patch is slightly simpler than my earlier version of this patch
as I discovered in testing that I had misspelled "#ifdef
CONFIG_POSIX_TIMERS". So I deleted that unnecessary test and made
setting of resched_timer uncondtional.
I have tested this and verified that without this patch there is a
nasty hang that is easy to trigger, and with this patch everything
works properly"
Thomas Gleixner dixit:
"It fixes the problem at hand and covers the ptrace case as well, which
I missed.
Reviewed-and-tested-by: Thomas Gleixner <tglx@linutronix.de>"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
signal: Only reschedule timers on signals timers have sent
A recent commit included linux/slab.h in linux/irq.h. This breaks the build
of vdso32 on a 64-bit kernel.
The reason is that linux/irq.h gets included into the vdso code via
linux/interrupt.h which is included from asm/mshyperv.h. That makes the
32-bit vdso compile fail, because slab.h includes the pgtable headers for
64-bit on a 64-bit build.
Neither linux/clocksource.h nor linux/interrupt.h are needed in the
mshyperv.h header file itself - it has a dependency on <linux/atomic.h>.
Remove the includes and unbreak the build.
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: devel@linuxdriverproject.org
Fixes: dee863b571 ("hv: export current Hyper-V clocksource")
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1706231038460.2647@nanos
Signed-off-by: Ingo Molnar <mingo@kernel.org>
- three fixes for kprobes/ftrace/livepatch interactions.
- properly handle data breakpoints when using the Radix MMU.
- fix for perf sampling of registers during call_usermodehelper().
- properly initialise the thread_info on our emergency stacks
- add an explicit flush when doing TLB invalidations for a process
using NPU2.
Thanks to:
Alistair Popple, Naveen N. Rao, Nicholas Piggin, Ravi Bangoria,
Masami Hiramatsu.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQIcBAABAgAGBQJZTZy4AAoJEFHr6jzI4aWA9CYQAK+BIZ2wM+QEKDWUc7bHUBfJ
kVkFr59VS4x9w2zL2fKijy3CTNqaEXCUhmCks7PFYxGfF437YaJGVfCBVotuY9Ce
SKTkJujUUf7b1zN+lKz8d9u6AKomE9rYBLpR0LPhDrnpiLbHtyWCeFWsmOB63k4E
05EwIHGAlvIC/dc6bHoeJzSLT5agK2KcCVWjgVzZgkDi7sbYkE8qhPmo/cojSERo
48+o8beAKgU3YEI8OwraxYBlUR71DKfdL7+6xvEo8kVNj5iNMq5GWY+YLvcQgR50
3MLuGxWFZWVRfZY8rrLMajFxNXojwuWuLu/PTT0Kz2ZRgLseF+op0AH2Ezsw4pnZ
CLp0sSKs9BqpwKuFCb1lHiEVnGfOb9CFy3u0nWmQjsE0Bj8HRC433x4fNQcJVUmJ
ZMPXRtZaboPV9jt3UoUhtancMiXdAbTP48N7klFRuVwCOycnxW5yAFkCssFaSpsn
EAidzBDODUXUV6/3paNVsZD7ehVJ/FMBgKSyAoJrcr+RZeFbn4b9m/NvdpdhQIwn
iGrTMhz3YmEhxiZrStYB9aaeaaWKZxd120bnTcfFEcnMOCKUkBSICtqjGLVsBO5e
rQV9P97h+kxf+Wh7DqhkC7br7URpYsYDZa9bCd+SAL1qrGeNZW/RP01ABRZWiSi4
0QVvKZ7uVzyEHIVHXOoj
=a2Ax
-----END PGP SIGNATURE-----
Merge tag 'powerpc-4.12-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Some more powerpc fixes for 4.12. Most of these actually came in last
week but got held up for some more testing.
- three fixes for kprobes/ftrace/livepatch interactions.
- properly handle data breakpoints when using the Radix MMU.
- fix for perf sampling of registers during call_usermodehelper().
- properly initialise the thread_info on our emergency stacks
- add an explicit flush when doing TLB invalidations for a process
using NPU2.
Thanks to: Alistair Popple, Naveen N. Rao, Nicholas Piggin, Ravi
Bangoria, Masami Hiramatsu"
* tag 'powerpc-4.12-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64: Initialise thread_info for emergency stacks
powerpc/powernv/npu-dma: Add explicit flush when sending an ATSD
powerpc/perf: Fix oops when kthread execs user process
powerpc/64s: Handle data breakpoints in Radix mode
powerpc/kprobes: Skip livepatch_handler() for jprobes
powerpc/ftrace: Pass the correct stack pointer for DYNAMIC_FTRACE_WITH_REGS
powerpc/kprobes: Pause function_graph tracing during jprobes handling
- I2C and SPI devices are expected to be enumerated by the
I2C and SPI subsystems, respectively, but due to a change made
during the 4.11 cycle, in some cases the ACPI core marks them
as already enumerated which causes the I2C and SPI subsystems
to overlook them, so fix that (Jarkko Nikula).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=ORkn
-----END PGP SIGNATURE-----
Merge tag 'acpi-4.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"This fixes the ACPI-based enumeration of some I2C and SPI devices
broken in 4.11.
Specifics:
- I2C and SPI devices are expected to be enumerated by the I2C and
SPI subsystems, respectively, but due to a change made during the
4.11 cycle, in some cases the ACPI core marks them as already
enumerated which causes the I2C and SPI subsystems to overlook
them, so fix that (Jarkko Nikula)"
* tag 'acpi-4.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / scan: Fix enumeration for special SPI and I2C devices
Pull i2c fix from Wolfram Sang.
* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: imx: Use correct function to write to register
MVEBU PWM controller embedded in the GPIO controller before
we release v4.12. Hopefully.
-----BEGIN PGP SIGNATURE-----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=+/4l
-----END PGP SIGNATURE-----
Merge tag 'gpio-v4.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fix from Linus Walleij:
"A single GPIO patch fixing the compatible string for the MVEBU PWM
controller embedded in the GPIO controller before we release v4.12.
Hopefully"
* tag 'gpio-v4.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: mvebu: change compatible string for PWM support
-----BEGIN PGP SIGNATURE-----
iQIcBAABAgAGBQJZTKPyAAoJEAx081l5xIa+uwEQAIws5U4O3a2L4qAJyKXfLFOL
iupnaWeFmvdSCs0bOuMDvltQh1QSNMj2kO9z8GGeMj23o6qo471JPVigU7uhxMur
xoqsbctrP4P/zq04mK/NrXYrNUL5nMyodJHb06BuztjNbgs9ftAPha97Hxkh4BL8
14dHoNvKthpzF3rOzIsx6ZK0VXnL7kGGgJZsdbcFbbZLUNxsUzYsn+9p1n5G9d7Z
jiEJutORf/n8Op2jXYhU42aYjIDo/mROFcD7rxehW5ZKRyg6rLTzJt1M3IYnAaZC
yOkLR+vwY6P5PzfLlOfKfCh15iEWMB/5kdnRQ0vbFIVe5Tg6ZrtI8gM2VII/rXI0
qRs/pDQJPdt/+vLQ+ryfuxbJWTPX8ZpFVWHpbB44NAw9JY2cgwFnx/NW2a/8LzFM
m4ToLihvN3O9aHHDpUl0Tr0l/coUMW4WyIuj8TZ+IeMo93Y40Dmbf0O29uY9+svs
uvtbFobETX/caF31h7Y0/8zd/LYTDCvnf5ip78/9YzPMTE+0UuwIgWXRtkP+hXUg
djxr+lni7wHyaGk3l2gVvC/YQ4uOD+EVCwU+K3GU0DVjbkE+J3m/Jj1wTl+iU+TS
8lot4baJ9o3AZVJV2ZHbWKvxcitUnqAQQXlJSPRarZf6qnXu6Bg38sU+dueNDjg4
tBLYjT1UKOFosRe3BVuV
=MKIT
-----END PGP SIGNATURE-----
Merge tag 'drm-fixes-for-v4.12-rc7' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"A varied bunch of fixes, one for an API regression with connectors.
Otherwise amdgpu and i915 have a bunch of varied fixes, the shrinker
ones being the most important"
* tag 'drm-fixes-for-v4.12-rc7' of git://people.freedesktop.org/~airlied/linux:
drm: Fix GETCONNECTOR regression
drm/radeon: add a quirk for Toshiba Satellite L20-183
drm/radeon: add a PX quirk for another K53TK variant
drm/amdgpu: adjust default display clock
drm/amdgpu/atom: fix ps allocation size for EnableDispPowerGating
drm/amdgpu: add Polaris12 DID
drm/i915: Don't enable backlight at setup time.
drm/i915: Plumb the correct acquire ctx into intel_crtc_disable_noatomic()
drm/i915: Fix deadlock witha the pipe A quirk during resume
drm/i915: Remove __GFP_NORETRY from our buffer allocator
drm/i915: Encourage our shrinker more when our shmemfs allocations fails
drm/i915: Differentiate between sw write location into ring and last hw read
random_for_linus_stable pull request.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAllIfggACgkQ8vlZVpUN
gaMzCAgAgsCFSH9vGm+DgUjABNH++fPB/MVsd8lq8sGzg+rTGCe1pBap409feDkF
+xZfF41Dqts8rchXYn6hqTDuOMfCX9cOxDxxOdhdKG6ntmdGHSZ4T+hM17v6Jgbe
a7M1xs/7Xrfunqsz9bkb1AdReO1wxG7f3a6JixPnQ1K6yc6HZpFZK5mTrd73lSfY
ta+KVrZBvPyVyAcWNQn6ssgTRhrTFwFy/nG4Mz2XteATyo9Z9622z8TGW5tZacnQ
dMgMi9ZMqYuIW/1tA1MmIs5GFkmbZVOqgpbipjhrXEquNCGwj4LQCeeN4qrKnXsw
enAy3z6DRu9C/F7gMHcvpbYETEmSjQ==
=HSEU
-----END PGP SIGNATURE-----
Merge tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull random fixes from Ted Ts'o:
"Fix some locking and gcc optimization issues from the most recent
random_for_linus_stable pull request"
* tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
random: silence compiler warnings and fix race
to crash
- a DM io reference count fix that resolves a NULL pointer seen when
issuing discards to a DM mirror target's device whose mirror legs do
not all support discards
- a couple DM integrity fixes
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJZTBU6AAoJEMUj8QotnQNaDJEH/3ujmjAnN1gpB4PhMh7kGyKA
i8qB476EYTEH8mPha88lvGoGoTk07cgwuWgQtulbcIlM0PbtbjcRs4lxEPCJW8sm
BeBnwKnBtnd+I+INKK0RCkYNHxO1ciCv4jMe08xNvSOrcmNVI1E4HjQ5GtJX7IMO
eQCEdTsDhf+ZXGnE6ErzfLVYnrazhNhk40+2jSlDFxDL8Qpd43EwMw5iHzeh0ztm
Frf9+JjWlckUS6oVm1AkTygbRrS3FEJ/cM3ei61/kj6hYzFGcP4Ba95Zd/E5k1Ls
9byBw93KTW3Pi5BKeVTo/JgxITcVQUZAWn95qF7HofZn6oBLdEiHzXLHQctl9Qs=
=fZVe
-----END PGP SIGNATURE-----
Merge tag 'for-4.12/dm-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- a revert of a DM mirror commit that has proven to make the code prone
to crash
- a DM io reference count fix that resolves a NULL pointer seen when
issuing discards to a DM mirror target's device whose mirror legs do
not all support discards
- a couple DM integrity fixes
* tag 'for-4.12/dm-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm io: fix duplicate bio completion due to missing ref count
dm integrity: fix to not disable/enable interrupts from interrupt context
Revert "dm mirror: use all available legs on multiple failures"
dm integrity: reject mappings too large for device
Merge misc fixes from Andrew Morton:
"8 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
fs/exec.c: account for argv/envp pointers
ocfs2: fix deadlock caused by recursive locking in xattr
slub: make sysfs file removal asynchronous
lib/cmdline.c: fix get_options() overflow while parsing ranges
fs/dax.c: fix inefficiency in dax_writeback_mapping_range()
autofs: sanity check status reported with AUTOFS_DEV_IOCTL_FAIL
mm/vmalloc.c: huge-vmap: fail gracefully on unexpected huge vmap mappings
mm, thp: remove cond_resched from __collapse_huge_page_copy
When limiting the argv/envp strings during exec to 1/4 of the stack limit,
the storage of the pointers to the strings was not included. This means
that an exec with huge numbers of tiny strings could eat 1/4 of the stack
limit in strings and then additional space would be later used by the
pointers to the strings.
For example, on 32-bit with a 8MB stack rlimit, an exec with 1677721
single-byte strings would consume less than 2MB of stack, the max (8MB /
4) amount allowed, but the pointers to the strings would consume the
remaining additional stack space (1677721 * 4 == 6710884).
The result (1677721 + 6710884 == 8388605) would exhaust stack space
entirely. Controlling this stack exhaustion could result in
pathological behavior in setuid binaries (CVE-2017-1000365).
[akpm@linux-foundation.org: additional commenting from Kees]
Fixes: b6a2fea393 ("mm: variable length argument support")
Link: http://lkml.kernel.org/r/20170622001720.GA32173@beast
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Qualys Security Advisory <qsa@qualys.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Another deadlock path caused by recursive locking is reported. This
kind of issue was introduced since commit 743b5f1434 ("ocfs2: take
inode lock in ocfs2_iop_set/get_acl()"). Two deadlock paths have been
fixed by commit b891fa5024 ("ocfs2: fix deadlock issue when taking
inode lock at vfs entry points"). Yes, we intend to fix this kind of
case in incremental way, because it's hard to find out all possible
paths at once.
This one can be reproduced like this. On node1, cp a large file from
home directory to ocfs2 mountpoint. While on node2, run
setfacl/getfacl. Both nodes will hang up there. The backtraces:
On node1:
__ocfs2_cluster_lock.isra.39+0x357/0x740 [ocfs2]
ocfs2_inode_lock_full_nested+0x17d/0x840 [ocfs2]
ocfs2_write_begin+0x43/0x1a0 [ocfs2]
generic_perform_write+0xa9/0x180
__generic_file_write_iter+0x1aa/0x1d0
ocfs2_file_write_iter+0x4f4/0xb40 [ocfs2]
__vfs_write+0xc3/0x130
vfs_write+0xb1/0x1a0
SyS_write+0x46/0xa0
On node2:
__ocfs2_cluster_lock.isra.39+0x357/0x740 [ocfs2]
ocfs2_inode_lock_full_nested+0x17d/0x840 [ocfs2]
ocfs2_xattr_set+0x12e/0xe80 [ocfs2]
ocfs2_set_acl+0x22d/0x260 [ocfs2]
ocfs2_iop_set_acl+0x65/0xb0 [ocfs2]
set_posix_acl+0x75/0xb0
posix_acl_xattr_set+0x49/0xa0
__vfs_setxattr+0x69/0x80
__vfs_setxattr_noperm+0x72/0x1a0
vfs_setxattr+0xa7/0xb0
setxattr+0x12d/0x190
path_setxattr+0x9f/0xb0
SyS_setxattr+0x14/0x20
Fix this one by using ocfs2_inode_{lock|unlock}_tracker, which is
exported by commit 439a36b8ef ("ocfs2/dlmglue: prepare tracking logic
to avoid recursive cluster lock").
Link: http://lkml.kernel.org/r/20170622014746.5815-1-zren@suse.com
Fixes: 743b5f1434 ("ocfs2: take inode lock in ocfs2_iop_set/get_acl()")
Signed-off-by: Eric Ren <zren@suse.com>
Reported-by: Thomas Voegtle <tv@lio96.de>
Tested-by: Thomas Voegtle <tv@lio96.de>
Reviewed-by: Joseph Qi <jiangqi903@gmail.com>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit bf5eb3de38 ("slub: separate out sysfs_slab_release() from
sysfs_slab_remove()") made slub sysfs file removals synchronous to
kmem_cache shutdown.
Unfortunately, this created a possible ABBA deadlock between slab_mutex
and sysfs draining mechanism triggering the following lockdep warning.
======================================================
[ INFO: possible circular locking dependency detected ]
4.10.0-test+ #48 Not tainted
-------------------------------------------------------
rmmod/1211 is trying to acquire lock:
(s_active#120){++++.+}, at: [<ffffffff81308073>] kernfs_remove+0x23/0x40
but task is already holding lock:
(slab_mutex){+.+.+.}, at: [<ffffffff8120f691>] kmem_cache_destroy+0x41/0x2d0
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (slab_mutex){+.+.+.}:
lock_acquire+0xf6/0x1f0
__mutex_lock+0x75/0x950
mutex_lock_nested+0x1b/0x20
slab_attr_store+0x75/0xd0
sysfs_kf_write+0x45/0x60
kernfs_fop_write+0x13c/0x1c0
__vfs_write+0x28/0x120
vfs_write+0xc8/0x1e0
SyS_write+0x49/0xa0
entry_SYSCALL_64_fastpath+0x1f/0xc2
-> #0 (s_active#120){++++.+}:
__lock_acquire+0x10ed/0x1260
lock_acquire+0xf6/0x1f0
__kernfs_remove+0x254/0x320
kernfs_remove+0x23/0x40
sysfs_remove_dir+0x51/0x80
kobject_del+0x18/0x50
__kmem_cache_shutdown+0x3e6/0x460
kmem_cache_destroy+0x1fb/0x2d0
kvm_exit+0x2d/0x80 [kvm]
vmx_exit+0x19/0xa1b [kvm_intel]
SyS_delete_module+0x198/0x1f0
entry_SYSCALL_64_fastpath+0x1f/0xc2
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(slab_mutex);
lock(s_active#120);
lock(slab_mutex);
lock(s_active#120);
*** DEADLOCK ***
2 locks held by rmmod/1211:
#0: (cpu_hotplug.dep_map){++++++}, at: [<ffffffff810a7877>] get_online_cpus+0x37/0x80
#1: (slab_mutex){+.+.+.}, at: [<ffffffff8120f691>] kmem_cache_destroy+0x41/0x2d0
stack backtrace:
CPU: 3 PID: 1211 Comm: rmmod Not tainted 4.10.0-test+ #48
Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01 v02.05 05/07/2012
Call Trace:
print_circular_bug+0x1be/0x210
__lock_acquire+0x10ed/0x1260
lock_acquire+0xf6/0x1f0
__kernfs_remove+0x254/0x320
kernfs_remove+0x23/0x40
sysfs_remove_dir+0x51/0x80
kobject_del+0x18/0x50
__kmem_cache_shutdown+0x3e6/0x460
kmem_cache_destroy+0x1fb/0x2d0
kvm_exit+0x2d/0x80 [kvm]
vmx_exit+0x19/0xa1b [kvm_intel]
SyS_delete_module+0x198/0x1f0
? SyS_delete_module+0x5/0x1f0
entry_SYSCALL_64_fastpath+0x1f/0xc2
It'd be the cleanest to deal with the issue by removing sysfs files
without holding slab_mutex before the rest of shutdown; however, given
the current code structure, it is pretty difficult to do so.
This patch punts sysfs file removal to a work item. Before commit
bf5eb3de38, the removal was punted to a RCU delayed work item which is
executed after release. Now, we're punting to a different work item on
shutdown which still maintains the goal removing the sysfs files earlier
when destroying kmem_caches.
Link: http://lkml.kernel.org/r/20170620204512.GI21326@htj.duckdns.org
Fixes: bf5eb3de38 ("slub: separate out sysfs_slab_release() from sysfs_slab_remove()")
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Tested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When using get_options() it's possible to specify a range of numbers,
like 1-100500. The problem is that it doesn't track array size while
calling internally to get_range() which iterates over the range and
fills the memory with numbers.
Link: http://lkml.kernel.org/r/2613C75C-B04D-4BFF-82A6-12F97BA0F620@gmail.com
Signed-off-by: Ilya V. Matveychikov <matvejchikov@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
dax_writeback_mapping_range() fails to update iteration index when
searching radix tree for entries needing cache flushing. Thus each
pagevec worth of entries is searched starting from the start which is
inefficient and prone to livelocks. Update index properly.
Link: http://lkml.kernel.org/r/20170619124531.21491-1-jack@suse.cz
Fixes: 9973c98ecf ("dax: add support for fsync/sync")
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If a positive status is passed with the AUTOFS_DEV_IOCTL_FAIL ioctl,
autofs4_d_automount() will return
ERR_PTR(status)
with that status to follow_automount(), which will then dereference an
invalid pointer.
So treat a positive status the same as zero, and map to ENOENT.
See comment in systemd src/core/automount.c::automount_send_ready().
Link: http://lkml.kernel.org/r/871sqwczx5.fsf@notabene.neil.brown.name
Signed-off-by: NeilBrown <neilb@suse.com>
Cc: Ian Kent <raven@themaw.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Existing code that uses vmalloc_to_page() may assume that any address
for which is_vmalloc_addr() returns true may be passed into
vmalloc_to_page() to retrieve the associated struct page.
This is not un unreasonable assumption to make, but on architectures
that have CONFIG_HAVE_ARCH_HUGE_VMAP=y, it no longer holds, and we need
to ensure that vmalloc_to_page() does not go off into the weeds trying
to dereference huge PUDs or PMDs as table entries.
Given that vmalloc() and vmap() themselves never create huge mappings or
deal with compound pages at all, there is no correct answer in this
case, so return NULL instead, and issue a warning.
When reading /proc/kcore on arm64, you will hit an oops as soon as you
hit the huge mappings used for the various segments that make up the
mapping of vmlinux. With this patch applied, you will no longer hit the
oops, but the kcore contents willl be incorrect (these regions will be
zeroed out)
We are fixing this for kcore specifically, so it avoids vread() for
those regions. At least one other problematic user exists, i.e.,
/dev/kmem, but that is currently broken on arm64 for other reasons.
Link: http://lkml.kernel.org/r/20170609082226.26152-1-ard.biesheuvel@linaro.org
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Laura Abbott <labbott@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: zhong jiang <zhongjiang@huawei.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is a partial revert of commit 338a16ba15 ("mm, thp: copying user
pages must schedule on collapse") which added a cond_resched() to
__collapse_huge_page_copy().
On x86 with CONFIG_HIGHPTE, __collapse_huge_page_copy is called in
atomic context and thus scheduling is not possible. This is only a
possible config on arm and i386.
Although need_resched has been shown to be set for over 100 jiffies
while doing the iteration in __collapse_huge_page_copy, this is better
than doing
if (in_atomic())
cond_resched()
to cover only non-CONFIG_HIGHPTE configs.
Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1706191341550.97821@chino.kir.corp.google.com
Signed-off-by: David Rientjes <rientjes@google.com>
Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Two fixes to remove spurious WARN_ONs from the new(ish) qedi driver.
The driver already prints a warning message, there's no need to panic
users by printing something that looks like an oops as well.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iQIcBAABAgAGBQJZTBWOAAoJEAVr7HOZEZN4g0gP/0DjcJmv8c72CzInKnfB+nF1
y9zrhOojrTD3OhChI0V82rxIfpFLL7ipMCmnl5zElsB0e8R+8w2EwkwO4VJz9lyu
mztjX68HxG3UmEA4wG9euixCUvK8ewt21PjbWF+voS0pj1bf1fSobl74J+5zQD2D
svoB93gqDGAIUVL388NWfwrR8Lo1Ysrc1FMtjIGQcrpx+7lVAKpN7olby7JKQpnx
2HJn64cUiPWX5qajEPnFOfpj8tNecg9Vq7+z8lIcGKXEQk0neraEejbtBWC2z9ZA
/WQJvA4Ed5BH2I4tG8Ba+J3Z5YFGMJhIdPD3P3Xs8rWAJ3Kzte2jWxP3o1T0cu0R
8W3b1EhFmyZbiAbhLf+UOlPGMY5cxej7dMzobH2h985mZAXamBnqO7yKXrGl/mHh
/ai4bC52AdJitOxObaRzyk7ilx4dfSODUfdbTD3j1gj7mIpFoDkgCqA/GrfDFk34
pzill8IiRxKntFgcZUPflBYAuvFZvGZHXvLsV6xxsYehMv7c3uxJ6/9rPowjxEAg
HYmkOH+nQgrgKo27SAviaz9Do9hfxYjJ1hP014DjsCAdtlzb05PhXAhJCAqaPzIG
UpPxpvE1QATI+ZtudLDt7Fk7uR6ggyvkgUkRoNktf4N8rhlUs3kAVQy3Mda3vVW3
97NN3G9kppiLATijLG/b
=ysyU
-----END PGP SIGNATURE-----
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two fixes to remove spurious WARN_ONs from the new(ish) qedi driver.
The driver already prints a warning message, there's no need to panic
users by printing something that looks like an oops as well"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qedi: Remove WARN_ON from clear task context.
scsi: qedi: Remove WARN_ON for untracked cleanup.
- don't allow swapon on files on the realtime device, because the swap
code will swap pages out to blocks on the data device, thereby
corrupting the filesystem
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=qkCp
-----END PGP SIGNATURE-----
Merge tag 'xfs-4.12-fixes-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"I have one more bugfix for you for 4.12-rc7 to fix a disk corruption
problem:
- don't allow swapon on files on the realtime device, because the
swap code will swap pages out to blocks on the data device, thereby
corrupting the filesystem"
* tag 'xfs-4.12-fixes-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: don't allow bmap on rt files
Florian Fainelli says:
====================
net: phy: Support "internal" PHY interface
This makes the "internal" phy-mode property generally available and
documented and this allows us to remove some custom parsing code
we had for bcmgenet and bcm_sf2 which both used that specific value.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The PHY library now supports an "internal" phy-mode, thus making our
custom parsing code now unnecessary.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The PHY library now supports an "internal" phy-mode, thus making our
custom parsing code now unnecessary.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that the Device Tree binding has been updated, update the PHY
library phy_interface_t and phy_modes to support the "internal" PHY
interface type.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A number of Ethernet MACs have internal Ethernet PHYs and the internal
wiring makes it so that this knowledge needs to be available using the
standard 'phy-mode' property.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan says:
====================
bnxt_en: Error handling and netpoll fixes.
Add missing error handling and fix netpoll handling. The current code
handles RX and TX events in netpoll mode and is causing lots of warnings
and errors in the RX code path in netpoll mode. The fix is to only handle
TX events in netpoll mode.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
To handle netpoll properly, the driver must only handle TX packets
during NAPI. Handling RX events cause warnings and errors in
netpoll mode. The ndo_poll_controller() method should call
napi_schedule() directly so that a NAPI weight of zero will be used
during netpoll mode.
The bnxt_en driver supports 2 ring modes: combined, and separate rx/tx.
In separate rx/tx mode, the ndo_poll_controller() method will only
process the tx rings. In combined mode, the rx and tx completion
entries are mixed in the completion ring and we need to drop the rx
entries and recycle the rx buffers.
Add a function bnxt_force_rx_discard() to handle this in netpoll mode
when we see rx entries in combined ring mode.
Reported-by: Calvin Owens <calvinowens@fb.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When we get a TPA_END completion to handle a completed LRO packet, it
is possible that hardware would indicate errors. The current code is
not checking for the error condition. Define the proper error bits and
the macro to check for this error and abort properly.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The function, skb_complete_tx_timestamp(), used to allow passing in a
NULL pointer for the time stamps, but that was changed in commit
62bccb8cdb ("net-timestamp: Make the
clone operation stand-alone from phy timestamping"), and the existing
call sites, all of which are in the dp83640 driver, were fixed up.
Even though the kernel-doc was subsequently updated in commit
7a76a021cd ("net-timestamp: Update
skb_complete_tx_timestamp comment"), still a bug fix from Manfred
Rudigier came into the driver using the old semantics. Probably
Manfred derived that patch from an older kernel version.
This fix should be applied to the stable trees as well.
Fixes: 81e8f2e930 ("net: dp83640: Fix tx timestamp overflow handling.")
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This series provides some updates to the mlx5 core and netdevice drivers.
Three patches from Tariq, Introduces page reuse mechanism in non-Striding
RQ RX datapath, we allow the the RX descriptor to reuse its allocated page
as much as it could, until the page is fully consumed. RX page reuse
reduces the stress on page allocator and improves RX performance especially
with high speeds (100Gb/s).
Next four patches of the series from Or allows to offload tc flower matching
on ttl/hoplimit and header re-write of hoplimit.
The rest of the series from Yotam and Or enhances mlx5 to support FW flashing
through the mlxfw module, in a similar manner done by the mlxsw driver.
Currently, only ethtool based flashing is implemented, where both Eth and IB ports
are supported.
Thanks,
Saeed.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJZTR2/AAoJEEg/ir3gV/o+HHkH/jA8uoIQgsIKP8+D6ppwChCm
pcNpNWi5eWjBwRbeDKqTVRtmKEapFf2bjhWaegsybr7oGhzyh+t6nvCEiJVoKLpd
gmcSKy7nY2PSepuMEg7bqlfj5caS3b0Nlz5sqPdclOXKYDVLytvcelOvr9OnqdAT
JqxWkJMhEpLSgFniuvIyc1uJq9j6ARW7SYWx/dKp+gTDI2KCwQ3DinsrZ+RPh42F
rxLFhGkcFuQ5cIr3QIdCM+pbr6LlAf2Fvz1Y791BARZg0XZp149C0c4smieEjU9M
ya9CWlbSvnsYZcSMXtUO8ETnrtvrEfcEM0MpZo8l4y28eWih/Ib5BiHevQG3wHA=
=L44M
-----END PGP SIGNATURE-----
Merge tag 'mlx5-updates-2017-06-23' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5-updates-2017-06-23
This series provides some updates to the mlx5 core and netdevice drivers.
Three patches from Tariq, Introduces page reuse mechanism in non-Striding
RQ RX datapath, we allow the the RX descriptor to reuse its allocated page
as much as it could, until the page is fully consumed. RX page reuse
reduces the stress on page allocator and improves RX performance especially
with high speeds (100Gb/s).
Next four patches of the series from Or allows to offload tc flower matching
on ttl/hoplimit and header re-write of hoplimit.
The rest of the series from Yotam and Or enhances mlx5 to support FW flashing
through the mlxfw module, in a similar manner done by the mlxsw driver.
Currently, only ethtool based flashing is implemented, where both Eth and IB ports
are supported.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Buffer group mappings can be obtained using FW_PARAMs cmd for newer FW.
Since some of the bg_maps are obtained in atomic context, created another
t4_query_params_ns(), that wont sleep when awaiting mbox cmd completion.
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We were using t4_get_mps_bg_map() for both t4_get_port_stats()
to determine which MPS Buffer Groups to report statistics on for a given
Port, and also for t4_sge_alloc_rxq() to provide a TP Ingress Channel
Congestion Map. For T4/T5 these are actually the same values (because they
are ~somewhat~ related), but for T6 they should return different values
(T6 has Port 0 associated with MPS Buffer Group 0 (with MPS Buffer Group 1
silently cascading off) and Port 1 is associated with MPS Buffer Group 2
(with 3 cascading off)).
Based on the original work by Casey Leedom <leedom@chelsio.com>
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The copy_to_user() function returns the number of bytes remaining but we
want to return -EFAULT here.
Fixes: 3c4d755915 ("tls: kernel TLS support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
