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tools/lib/bpf/ringbuf.c
927cbb478adf ("libbpf: Handle size overflow for ringbuf mmap")
b486d19a0ab0 ("libbpf: checkpatch: Fixed code alignments in ringbuf.c")
https://lore.kernel.org/all/20221121122707.44d1446a@canb.auug.org.au/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Even though the devices have very little in common beside the name and
the main "switch" feature, Marvell Prestera switch family is also
composed of PCI-only devices which can receive additional static
properties, like nvmem cells to point at MAC addresses, for
instance. Let's describe them.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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The currently described switch family is named AlleyCat3, it is a memory
mapped switch found on Armada XP boards.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Even though this description is not used anywhere upstream (no matching
driver), while on this file I decided I would try a conversion to yaml
in order to clarify the prestera family description.
I cannot keep the nodename dfx-server@xxxx so I switched to dfx-bus@xxxx
which matches simple-bus.yaml. Otherwise I took the example context from
the only user of this compatible: armada-xp-98dx3236.dtsi, which is a
rather old and not perfect DT.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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This reverts commit 40acc05271abc2852c32622edbebd75698736b9b.
marvell,prestera.txt is an old file describing the old Alleycat3
standalone switches. The commit mentioned above actually hacked these
bindings to add support for a device tree property for a more modern
version of the IP connected over PCI, using only the generic compatible
in order to retrieve the device node from the prestera driver to read
one static property.
The problematic property discussed here is "base-mac-provider". The
original intent was to point to a nvmem device which could produce the
relevant nvmem-cell. This property has never been acked by DT
maintainers and fails all the layering that has been brought with the nvmem
bindings by pointing at a nvmem producer, bypassing the existing nvmem
bindings, rather than a nvmem cell directly. Furthermore, the property
cannot even be used upstream because it expected the ONIE tlv driver to
produce a specific cell, driver which used nacked bindings and thus was
never merged, replaced by a more integrated concept: the nvmem-layout.
So let's forget about this temporary addition, safely avoiding the need
for any backward compatibility handling. A new (yaml) binding file will
be brought with the prestera bindings, and there we will actually
include a description of the modern IP over PCI, including the right way
to point to a nvmem cell.
Cc: Vadym Kochan <vadym.kochan@plvision.eu>
Cc: Taras Chornyi <tchornyi@marvell.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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====================
bpf-next 2022-11-25
We've added 101 non-merge commits during the last 11 day(s) which contain
a total of 109 files changed, 8827 insertions(+), 1129 deletions(-).
The main changes are:
1) Support for user defined BPF objects: the use case is to allocate own
objects, build own object hierarchies and use the building blocks to
build own data structures flexibly, for example, linked lists in BPF,
from Kumar Kartikeya Dwivedi.
2) Add bpf_rcu_read_{,un}lock() support for sleepable programs,
from Yonghong Song.
3) Add support storing struct task_struct objects as kptrs in maps,
from David Vernet.
4) Batch of BPF map documentation improvements, from Maryam Tahhan
and Donald Hunter.
5) Improve BPF verifier to propagate nullness information for branches
of register to register comparisons, from Eduard Zingerman.
6) Fix cgroup BPF iter infra to hold reference on the start cgroup,
from Hou Tao.
7) Fix BPF verifier to not mark fentry/fexit program arguments as trusted
given it is not the case for them, from Alexei Starovoitov.
8) Improve BPF verifier's realloc handling to better play along with dynamic
runtime analysis tools like KASAN and friends, from Kees Cook.
9) Remove legacy libbpf mode support from bpftool,
from Sahid Orentino Ferdjaoui.
10) Rework zero-len skb redirection checks to avoid potentially breaking
existing BPF test infra users, from Stanislav Fomichev.
11) Two small refactorings which are independent and have been split out
of the XDP queueing RFC series, from Toke Høiland-Jørgensen.
12) Fix a memory leak in LSM cgroup BPF selftest, from Wang Yufen.
13) Documentation on how to run BPF CI without patch submission,
from Daniel Müller.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
====================
Link: https://lore.kernel.org/r/20221125012450.441-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small driver fixes for 6.1-rc7, they include:
- build warning fix for the vdso when using new versions of grep
- iio driver fixes for reported issues
- small nvmem driver fixes
- fpga Kconfig fix
- interconnect dt binding fix
All of these have been in linux-next with no reported issues"
* tag 'char-misc-6.1-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
lib/vdso: use "grep -E" instead of "egrep"
nvmem: lan9662-otp: Change return type of lan9662_otp_wait_flag_clear()
nvmem: rmem: Fix return value check in rmem_read()
fpga: m10bmc-sec: Fix kconfig dependencies
dt-bindings: iio: adc: Remove the property "aspeed,trim-data-valid"
iio: adc: aspeed: Remove the trim valid dts property.
iio: core: Fix entry not deleted when iio_register_sw_trigger_type() fails
iio: accel: bma400: Fix memory leak in bma400_get_steps_reg()
iio: light: rpr0521: add missing Kconfig dependencies
iio: health: afe4404: Fix oob read in afe4404_[read|write]_raw
iio: health: afe4403: Fix oob read in afe4403_read_raw
iio: light: apds9960: fix wrong register for gesture gain
dt-bindings: interconnect: qcom,msm8998-bwmon: Correct SC7280 CPU compatible
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These revert a recent change in the schedutil cpufreq governor that
had not been expected to make any functional difference, but turned
out to introduce a performance regression, fix an initialization issue
in the amd-pstate driver and make it actually replace the venerable
ACPI cpufreq driver on the supported systems by default.
Specifics:
- Revert a recent schedutil cpufreq governor change that introduced a
performace regression on Pixel 6 (Sam Wu)
- Fix amd-pstate driver initialization after running the kernel via
kexec (Wyes Karny)
- Turn amd-pstate into a built-in driver which allows it to take
precedence over acpi-cpufreq by default on supported systems and
amend it with a mechanism to disable this behavior (Perry Yuan)
- Update amd-pstate documentation in accordance with the other
changes made to it (Perry Yuan)"
* tag 'pm-6.1-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Documentation: add amd-pstate kernel command line options
Documentation: amd-pstate: add driver working mode introduction
cpufreq: amd-pstate: add amd-pstate driver parameter for mode selection
cpufreq: amd-pstate: change amd-pstate driver to be built-in type
cpufreq: amd-pstate: cpufreq: amd-pstate: reset MSR_AMD_PERF_CTL register at init
Revert "cpufreq: schedutil: Move max CPU capacity to sugov_policy"
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Add documentation for BPF_MAP_TYPE_XSKMAP including kernel version introduced,
usage and examples.
Signed-off-by: Maryam Tahhan <mtahhan@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20221123090043.83945-1-mtahhan@redhat.com
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Commit c64779e24e88("selftests/bpf: Merge most of test_btf into test_progs")
renamed the BTF selftest from 'test_btf.c' to 'prog_tests/btf.c'.
Signed-off-by: Rong Tao <rongtao@cestc.cn>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/bpf/tencent_1FA6904156E8E599CAE4ABDBE80F22830106@qq.com
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from rxrpc, netfilter and xfrm.
Current release - regressions:
- dccp/tcp: fix bhash2 issues related to WARN_ON() in
inet_csk_get_port()
- l2tp: don't sleep and disable BH under writer-side sk_callback_lock
- eth: ice: fix handling of burst tx timestamps
Current release - new code bugs:
- xfrm: squelch kernel warning in case XFRM encap type is not
available
- eth: mlx5e: fix possible race condition in macsec extended packet
number update routine
Previous releases - regressions:
- neigh: decrement the family specific qlen
- netfilter: fix ipset regression
- rxrpc: fix race between conn bundle lookup and bundle removal
[ZDI-CAN-15975]
- eth: iavf: do not restart tx queues after reset task failure
- eth: nfp: add port from netdev validation for EEPROM access
- eth: mtk_eth_soc: fix potential memory leak in mtk_rx_alloc()
Previous releases - always broken:
- tipc: set con sock in tipc_conn_alloc
- nfc:
- fix potential memory leaks
- fix incorrect sizing calculations in EVT_TRANSACTION
- eth: octeontx2-af: fix pci device refcount leak
- eth: bonding: fix ICMPv6 header handling when receiving IPv6
messages
- eth: prestera: add missing unregister_netdev() in
prestera_port_create()
- eth: tsnep: fix rotten packets
Misc:
- usb: qmi_wwan: add support for LARA-L6"
* tag 'net-6.1-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (95 commits)
net: thunderx: Fix the ACPI memory leak
octeontx2-af: Fix reference count issue in rvu_sdp_init()
net: altera_tse: release phylink resources in tse_shutdown()
virtio_net: Fix probe failed when modprobe virtio_net
net: wwan: t7xx: Fix the ACPI memory leak
octeontx2-pf: Add check for devm_kcalloc
net: enetc: preserve TX ring priority across reconfiguration
net: marvell: prestera: add missing unregister_netdev() in prestera_port_create()
nfc: st-nci: fix incorrect sizing calculations in EVT_TRANSACTION
nfc: st-nci: fix memory leaks in EVT_TRANSACTION
nfc: st-nci: fix incorrect validating logic in EVT_TRANSACTION
Documentation: networking: Update generic_netlink_howto URL
net/cdc_ncm: Fix multicast RX support for CDC NCM devices with ZLP
net: usb: qmi_wwan: add u-blox 0x1342 composition
l2tp: Don't sleep and disable BH under writer-side sk_callback_lock
net: dm9051: Fix missing dev_kfree_skb() in dm9051_loop_rx()
arcnet: fix potential memory leak in com20020_probe()
ipv4: Fix error return code in fib_table_insert()
net: ethernet: mtk_eth_soc: fix memory leak in error path
net: ethernet: mtk_eth_soc: fix resource leak in error path
...
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"There are a bunch of late fixes that just came in, in particular a
longer series for Rockchips devicetree files, but most of those just
address cosmetic errors that were found during the binding validation.
There are a couple of code changes:
- A regression fix to the IXP42x PCI bus
- A fix for a memory leak on optee, and another one for mach-mxs
- Two fixes for the sunxi rsb bus driver, to address problems with
the shutdown logic
The rest are small but important devicetree fixes for a number of
individual boards, addressing issues across all platforms:
- arm global timer on older rockchip SoCs is unstable and needs to be
disabled in favor of a more reliable clocksource
- Corrections to fix bluetooth, mmc, and networking on a few Rockchip
boards
- at91/sam9g20ek UDC needs a pin controller config change
- an omap board runs into mmc probe errors because of regulator nodes
in the wrong place
- imx8mp-evk has a minor inaccuracy with its pin config, but without
user visible impact
- The Allwinner H6 Hantro G2 video decoder needs an IOMMU reference
to prevent the driver from crashing"
* tag 'soc-fixes-6.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (30 commits)
bus: ixp4xx: Don't touch bit 7 on IXP42x
ARM: dts: imx6q-prti6q: Fix ref/tcxo-clock-frequency properties
arm64: dts: imx8mp-evk: correct pcie pad settings
ARM: mxs: fix memory leak in mxs_machine_init()
ARM: dts: at91: sam9g20ek: enable udc vbus gpio pinctrl
tee: optee: fix possible memory leak in optee_register_device()
arm64: dts: allwinner: h6: Add IOMMU reference to Hantro G2
media: dt-bindings: allwinner: h6-vpu-g2: Add IOMMU reference property
bus: sunxi-rsb: Support atomic transfers
bus: sunxi-rsb: Remove the shutdown callback
ARM: dts: rockchip: disable arm_global_timer on rk3066 and rk3188
arm64: dts: rockchip: Fix Pine64 Quartz4-B PMIC interrupt
ARM: dts: am335x-pcm-953: Define fixed regulators in root node
ARM: dts: rockchip: rk3188: fix lcdc1-rgb24 node name
arm64: dts: rockchip: fix ir-receiver node names
ARM: dts: rockchip: fix ir-receiver node names
arm64: dts: rockchip: fix adc-keys sub node names
ARM: dts: rockchip: fix adc-keys sub node names
arm: dts: rockchip: remove clock-frequency from rtc
arm: dts: rockchip: fix node name for hym8563 rtc
...
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The documentation refers to invalid web page under www.linuxfoundation.org
The patch refers to a working URL under wiki.linuxfoundation.org
Signed-off-by: Nir Levy <bhr166@gmail.com>
Link: https://lore.kernel.org/all/20221120220630.7443-1-bhr166@gmail.com/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Fix duplicate C declaration warnings when using sphinx >= 3.1.
Reported-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/bpf/ed4dac84-1b12-5c58-e4de-93ab9ac67c09@gmail.com
Link: https://lore.kernel.org/bpf/20221122143933.91321-1-donald.hunter@gmail.com
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Add documentation for BPF_MAP_TYPE_BLOOM_FILTER including kernel
BPF helper usage, userspace usage and examples.
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Joanne Koong <joannelkoong@gmail.com>
Link: https://lore.kernel.org/bpf/20221123141151.54556-1-donald.hunter@gmail.com
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Sphinx version >=3.1 warns about duplicate function declarations in the
DEVMAP documentation. This is because the function name is the same for
kernel and user space BPF progs but the parameters and return types
they take is what differs. This patch moves from using the ``c:function::``
directive to using the ``code-block:: c`` directive. The patches also fix
the indentation for the text associated with the "new" code block delcarations.
The missing support of c:namespace-push:: and c:namespace-pop:: directives by
helper scripts for kernel documentation prevents using the ``c:function::``
directive with proper namespacing.
Signed-off-by: Maryam Tahhan <mtahhan@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20221123092321.88558-3-mtahhan@redhat.com
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Sphinx version >=3.1 warns about duplicate function declarations in the
CPUMAP documentation. This is because the function name is the same for
kernel and user space BPF progs but the parameters and return types
they take is what differs. This patch moves from using the ``c:function::``
directive to using the ``code-block:: c`` directive. The patches also fix
the indentation for the text associated with the "new" code block delcarations.
The missing support of c:namespace-push:: and c:namespace-pop:: directives by
helper scripts for kernel documentation prevents using the ``c:function::``
directive with proper namespacing.
Signed-off-by: Maryam Tahhan <mtahhan@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20221123092321.88558-2-mtahhan@redhat.com
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Extend the libbpf documentation with a table of program types,
attach points and ELF section names.
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/bpf/20221121121734.98329-1-donald.hunter@gmail.com
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Port documentation
kernel test robot reported indentation warnings:
Documentation/networking/devlink/devlink-port.rst:220: WARNING: Unexpected indentation.
Documentation/networking/devlink/devlink-port.rst:222: WARNING: Block quote ends without a blank line; unexpected unindent.
These warnings cause lists (arbitration flow for which the warnings blame to
and 3-step subfunction setup) to be rendered inline instead. Also, for the
former list, automatic list numbering is messed up.
Fix these warnings by adding missing blank line padding.
Link: https://lore.kernel.org/linux-doc/202211200926.kfOPiVti-lkp@intel.com/
Fixes: 242dd64375b80a ("Documentation: Add documentation for new devlink-rate attributes")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The Chinese translation of FPRs Note is not consistent with the original
English version, $v0/$v1 should be $fv0/$fv1, $a0/$a1 should be $fa0/$fa1,
fix them.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Add a new amd pstate driver command line option to enable driver passive
working mode via MSR and shared memory interface to request desired
performance within abstract scale and the power management firmware
(SMU) convert the perf requests into actual hardware pstates.
Also the `disable` parameter can disable the pstate driver loading by
adding `amd_pstate=disable` to kernel command line.
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Introduce the `amd_pstate` driver new working mode with
`amd_pstate=passive` added to kernel command line.
If there is no passive mode enabled by user, amd_pstate driver will be
disabled by default for now.
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc into char-misc-linus
Georgi writes:
interconnect fix for v6.1-rc
This contains a tiny fix to align the driver compatible string in the
binding documentation with the one used in DTS.
- dt-bindings: interconnect: qcom,msm8998-bwmon: Correct SC7280 CPU compatible
Signed-off-by: Georgi Djakov <djakov@kernel.org>
* tag 'icc-6.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc:
dt-bindings: interconnect: qcom,msm8998-bwmon: Correct SC7280 CPU compatible
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https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next
Jonathan writes:
"3rd set of IIO fixes for the 6.1 cycle.
Usual mixed bunch of driver fixes.
* sw-triggers
- Fix failure to cleanup up list registration in an error path.
* aspeed,adc
- Drop the trim valid dts property as it doesn't account for unprogrammed
OTP and that can be easily detected without it.
* avago,apds9960:
- Fix register address for gesture gain.
* bosch,bma400
- Fix a memory leak in an error path.
* rohm,rpr0521
- Fix missing dependency on IIO_BUFFER/IIO_TRIGGERED_BUFFER.
* ti,afe4403/4404
- Fix out of band read by moving reads down to where they are
used."
* tag 'iio-fixes-for-6.1c' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio:
dt-bindings: iio: adc: Remove the property "aspeed,trim-data-valid"
iio: adc: aspeed: Remove the trim valid dts property.
iio: core: Fix entry not deleted when iio_register_sw_trigger_type() fails
iio: accel: bma400: Fix memory leak in bma400_get_steps_reg()
iio: light: rpr0521: add missing Kconfig dependencies
iio: health: afe4404: Fix oob read in afe4404_[read|write]_raw
iio: health: afe4403: Fix oob read in afe4403_read_raw
iio: light: apds9960: fix wrong register for gesture gain
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https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into arm/fixes
- RSB bus communication fixes
- missing IOMMU reference property to H6 Hantro G2
* tag 'sunxi-fixes-for-6.1-1' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
arm64: dts: allwinner: h6: Add IOMMU reference to Hantro G2
media: dt-bindings: allwinner: h6-vpu-g2: Add IOMMU reference property
bus: sunxi-rsb: Support atomic transfers
bus: sunxi-rsb: Remove the shutdown callback
Link: https://lore.kernel.org/r/Y3ftpBFk5+fndA4B@jernej-laptop
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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mdio bus frequency is going to be configurable at boottime by a property
in DT now, so add a description to it.
Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Greentime Hu <greentime.hu@sifive.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Kfuncs currently support specifying the KF_TRUSTED_ARGS flag to signal
to the verifier that it should enforce that a BPF program passes it a
"safe", trusted pointer. Currently, "safe" means that the pointer is
either PTR_TO_CTX, or is refcounted. There may be cases, however, where
the kernel passes a BPF program a safe / trusted pointer to an object
that the BPF program wishes to use as a kptr, but because the object
does not yet have a ref_obj_id from the perspective of the verifier, the
program would be unable to pass it to a KF_ACQUIRE | KF_TRUSTED_ARGS
kfunc.
The solution is to expand the set of pointers that are considered
trusted according to KF_TRUSTED_ARGS, so that programs can invoke kfuncs
with these pointers without getting rejected by the verifier.
There is already a PTR_UNTRUSTED flag that is set in some scenarios,
such as when a BPF program reads a kptr directly from a map
without performing a bpf_kptr_xchg() call. These pointers of course can
and should be rejected by the verifier. Unfortunately, however,
PTR_UNTRUSTED does not cover all the cases for safety that need to
be addressed to adequately protect kfuncs. Specifically, pointers
obtained by a BPF program "walking" a struct are _not_ considered
PTR_UNTRUSTED according to BPF. For example, say that we were to add a
kfunc called bpf_task_acquire(), with KF_ACQUIRE | KF_TRUSTED_ARGS, to
acquire a struct task_struct *. If we only used PTR_UNTRUSTED to signal
that a task was unsafe to pass to a kfunc, the verifier would mistakenly
allow the following unsafe BPF program to be loaded:
SEC("tp_btf/task_newtask")
int BPF_PROG(unsafe_acquire_task,
struct task_struct *task,
u64 clone_flags)
{
struct task_struct *acquired, *nested;
nested = task->last_wakee;
/* Would not be rejected by the verifier. */
acquired = bpf_task_acquire(nested);
if (!acquired)
return 0;
bpf_task_release(acquired);
return 0;
}
To address this, this patch defines a new type flag called PTR_TRUSTED
which tracks whether a PTR_TO_BTF_ID pointer is safe to pass to a
KF_TRUSTED_ARGS kfunc or a BPF helper function. PTR_TRUSTED pointers are
passed directly from the kernel as a tracepoint or struct_ops callback
argument. Any nested pointer that is obtained from walking a PTR_TRUSTED
pointer is no longer PTR_TRUSTED. From the example above, the struct
task_struct *task argument is PTR_TRUSTED, but the 'nested' pointer
obtained from 'task->last_wakee' is not PTR_TRUSTED.
A subsequent patch will add kfuncs for storing a task kfunc as a kptr,
and then another patch will add selftests to validate.
Signed-off-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/r/20221120051004.3605026-3-void@manifault.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
- a fix for 8042 to stop leaking platform device on unload
- a fix for Goodix touchscreens on devices like Nanote UMPC-01 where we
need to reset controller to load config from firmware
- a workaround for Acer Switch to avoid interrupt storm from home and
power buttons
- a workaround for more ASUS ZenBook models to detect keyboard
controller
- a fix for iforce driver to properly handle communication errors
- touchpad on HP Laptop 15-da3001TU switched to RMI mode
* tag 'input-for-v6.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: i8042 - fix leaking of platform device on module removal
Input: i8042 - apply probe defer to more ASUS ZenBook models
Input: soc_button_array - add Acer Switch V 10 to dmi_use_low_level_irq[]
Input: soc_button_array - add use_low_level_irq module parameter
Input: iforce - invert valid length check when fetching device IDs
Input: goodix - try resetting the controller when no config is set
dt-bindings: input: touchscreen: Add compatible for Goodix GT7986U chip
Input: synaptics - switch touchpad on HP Laptop 15-da3001TU to RMI mode
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Add documentation for BPF_MAP_TYPE_DEVMAP and BPF_MAP_TYPE_DEVMAP_HASH
including kernel version introduced, usage and examples.
Add documentation that describes XDP_REDIRECT.
Signed-off-by: Maryam Tahhan <mtahhan@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20221115144921.165483-1-mtahhan@redhat.com
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are a number of small tty and serial driver fixes for 6.1-rc6.
They all resolve reported problems:
- kernel doc build problems with the -rc1 serial driver documentation
update
- n_gsm reported problems
- imx serial driver missing callback
- lots of tiny 8250 driver fixes for reported issues.
All of these have been in linux-next for over a week with no reported
problems"
* tag 'tty-6.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
docs/driver-api/miscellaneous: Remove kernel-doc of serial_core.c
serial: 8250: Flush DMA Rx on RLSI
serial: 8250_lpss: Use 16B DMA burst with Elkhart Lake
serial: 8250_lpss: Configure DMA also w/o DMA filter
serial: 8250: Fall back to non-DMA Rx if IIR_RDI occurs
tty: n_gsm: fix sleep-in-atomic-context bug in gsm_control_send
Revert "tty: n_gsm: replace kicktimer with delayed_work"
Revert "tty: n_gsm: avoid call of sleeping functions from atomic context"
serial: imx: Add missing .thaw_noirq hook
tty: serial: fsl_lpuart: don't break the on-going transfer when global reset
serial: 8250: omap: Flush PM QOS work on remove
serial: 8250: omap: Fix unpaired pm_runtime_put_sync() in omap8250_remove()
serial: 8250_omap: remove wait loop from Errata i202 workaround
serial: 8250: omap: Fix missing PM runtime calls for omap8250_set_mctrl()
serial: 8250: 8250_omap: Avoid RS485 RTS glitch on ->set_termios()
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small char/misc and other driver fixes for 6.1-rc6 to
resolve some reported problems. Included in here are:
- iio driver fixes
- binder driver fix
- nvmem driver fix
- vme_vmci information leak fix
- parport fix
- slimbus configuration fix
- coreboot firmware bugfix
- speakup build fix and crash fix
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-6.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (22 commits)
firmware: coreboot: Register bus in module init
nvmem: u-boot-env: fix crc32_data_offset on redundant u-boot-env
slimbus: qcom-ngd: Fix build error when CONFIG_SLIM_QCOM_NGD_CTRL=y && CONFIG_QCOM_RPROC_COMMON=m
docs: update mediator contact information in CoC doc
slimbus: stream: correct presence rate frequencies
nvmem: lan9662-otp: Fix compatible string
binder: validate alloc->mm in ->mmap() handler
parport_pc: Avoid FIFO port location truncation
siox: fix possible memory leak in siox_device_add()
misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram()
speakup: replace utils' u_char with unsigned char
speakup: fix a segfault caused by switching consoles
tools: iio: iio_generic_buffer: Fix read size
iio: imu: bno055: uninitialized variable bug in bno055_trigger_handler()
iio: adc: at91_adc: fix possible memory leak in at91_adc_allocate_trigger()
iio: adc: mp2629: fix potential array out of bound access
iio: adc: mp2629: fix wrong comparison of channel
iio: pressure: ms5611: changed hardcoded SPI speed to value limited
iio: pressure: ms5611: fixed value compensation bug
iio: accel: bma400: Ensure VDDIO is enable defore reading the chip ID.
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A fair amount of commits at this time due to ASoC PR merge, but all
look small and easy, mostly device-specific fixes spanned in various
drivers. Hopefully this should be the last big chunk for 6.1"
* tag 'sound-6.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (21 commits)
ALSA: hda/realtek: Fix the speaker output on Samsung Galaxy Book Pro 360
ALSA: hda/realtek: fix speakers for Samsung Galaxy Book Pro
ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()
ASoC: stm32: dfsdm: manage cb buffers cleanup
ASoC: sof_es8336: reduce pop noise on speaker
ASoC: SOF: topology: No need to assign core ID if token parsing failed
ASoC: soc-utils: Remove __exit for snd_soc_util_exit()
ASoC: rt5677: fix legacy dai naming
ASoC: rt5514: fix legacy dai naming
ASoC: SOF: ipc3-topology: use old pipeline teardown flow with SOF2.1 and older
ASoC: hda: intel-dsp-config: add ES83x6 quirk for IceLake
ASoC: Intel: soc-acpi: add ES83x6 support to IceLake
ASoC: tas2780: Fix set_tdm_slot in case of single slot
ASoC: tas2764: Fix set_tdm_slot in case of single slot
ASoC: tas2770: Fix set_tdm_slot in case of single slot
ASoC: fsl_asrc fsl_esai fsl_sai: allow CONFIG_PM=N
ASoC: core: Fix use-after-free in snd_soc_exit()
MAINTAINERS: update Tzung-Bi's email address
ASoC: Intel: bytcht_es8316: Add quirk for the Nanote UMPC-01
ASoC: amd: yc: Add Alienware m17 R5 AMD into DMI table
...
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This patch is to add sysctl net.sctp.l3mdev_accept to allow
users to change the pernet global l3mdev_accept.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a new enumerated value to those defined for the qcom,gsi-loader
property. If the qcom,gsi-loader is "skip", the GSI firmware will
already be loaded, so neither the AP nor modem is required to load
GSI firmware.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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GSI firmware for IPA must be loaded during initialization, either by
the AP or by the modem. The loader is currently specified based on
whether the Boolean modem-init property is present.
Instead, use a new property with an enumerated value to indicate
explicitly how GSI firmware gets loaded. With this in place, a
third approach can be added in an upcoming patch.
The new qcom,gsi-loader property has two defined values:
- self: The AP loads GSI firmware
- modem: The modem loads GSI firmware
The modem-init property must still be supported, but is now marked
deprecated.
Update the example so it represents the SC7180 SoC, and provide
examples for the qcom,gsi-loader, memory-region, and firmware-name
properties.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Provide documentation for newly introduced netlink attributes for
devlink-rate: tx_priority and tx_weight.
Mention the possibility to export tree from the driver.
Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add documentation to a newly added devlink-rate feature. Provide some
examples on how to use the commands, which netlink attributes are
supported and descriptions of the attributes.
Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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IPQ5018, IPQ6018 and IPQ8074 require clock-names to be set as driver is
requesting the clock based on it and not index, so document that and make
it required for the listed SoC-s.
Signed-off-by: Robert Marko <robimarko@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221114194734.3287854-4-robimarko@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Now that we can match the platforms requiring clocks by compatible start
using those to allow clocks per compatible and make them required.
Signed-off-by: Robert Marko <robimarko@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221114194734.3287854-3-robimarko@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Allow using IPQ8074 specific compatible along with the fallback IPQ4019
one in order to be able to specify which compatibles require clocks to
be able to validate them via schema.
Signed-off-by: Robert Marko <robimarko@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221114194734.3287854-2-robimarko@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Document IPQ6018 compatible that is already being used in the DTS along
with the fallback IPQ4019 compatible as driver itself only gets probed
on IPQ4019 and IPQ5018 compatibles.
This is also required in order to specify which platform require clock to
be defined and validate it in schema.
Signed-off-by: Robert Marko <robimarko@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221114194734.3287854-1-robimarko@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Allow passing known constant scalars as arguments to kfuncs that do not
represent a size parameter. We use mark_chain_precision for the constant
scalar argument to mark it precise. This makes the search pruning
optimization of verifier more conservative for such kfunc calls, and
each non-distinct argument is considered unequivalent.
We will use this support to then expose a bpf_obj_new function where it
takes the local type ID of a type in program BTF, and returns a
PTR_TO_BTF_ID | MEM_ALLOC to the local type, and allows programs to
allocate their own objects.
Each type ID resolves to a distinct type with a possibly distinct size,
hence the type ID constant matters in terms of program safety and its
precision needs to be checked between old and cur states inside regsafe.
The use of mark_chain_precision enables this.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20221118015614.2013203-13-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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include/linux/bpf.h
1f6e04a1c7b8 ("bpf: Fix offset calculation error in __copy_map_value and zero_map_value")
aa3496accc41 ("bpf: Refactor kptr_off_tab into btf_record")
f71b2f64177a ("bpf: Refactor map->off_arr handling")
https://lore.kernel.org/all/20221114095000.67a73239@canb.auug.org.au/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Commit 26a9b433cf08 ("bpf/docs: Document how to run CI without patch
submission") caused a warning to be generated when compiling the
documentation:
> bpf_devel_QA.rst:55: WARNING: Unexpected indentation.
> bpf_devel_QA.rst:56: WARNING: Block quote ends without a blank line
This change fixes the problem by inserting the required blank lines.
Fixes: 26a9b433cf08 ("bpf/docs: Document how to run CI without patch submission")
Reported-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Daniel Müller <deso@posteo.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/bpf/20221116174358.2744613-1-deso@posteo.net
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The Hantro G2 video decoder block sits behind an IOMMU. The device tree
binding needs a property to reference it. Without a reference for the
implementation to properly configure the IOMMU, it will fault and cause
the video decoder to fail.
Add an "iommus" property for referring to the IOMMU port. The master ID
in the example is taken from the IOMMU fault error message on Linux,
and the number seems to match the order in the user manual's IOMMU
diagram.
Fixes: fd6be12716c4 ("media: dt-bindings: allwinner: document H6 Hantro G2 binding")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221115090644.3602573-2-wenst@chromium.org
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
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The maximum hash table size is 64K due to the nature of the protocol. [0]
It's smaller than TCP, and fewer sockets can cause a performance drop.
On an EC2 c5.24xlarge instance (192 GiB memory), after running iperf3 in
different netns, creating 32Mi sockets without data transfer in the root
netns causes regression for the iperf3's connection.
uhash_entries sockets length Gbps
64K 1 1 5.69
1Mi 16 5.27
2Mi 32 4.90
4Mi 64 4.09
8Mi 128 2.96
16Mi 256 2.06
32Mi 512 1.12
The per-netns hash table breaks the lengthy lists into shorter ones. It is
useful on a multi-tenant system with thousands of netns. With smaller hash
tables, we can look up sockets faster, isolate noisy neighbours, and reduce
lock contention.
The max size of the per-netns table is 64K as well. This is because the
possible hash range by udp_hashfn() always fits in 64K within the same
netns and we cannot make full use of the whole buckets larger than 64K.
/* 0 < num < 64K -> X < hash < X + 64K */
(num + net_hash_mix(net)) & mask;
Also, the min size is 128. We use a bitmap to search for an available
port in udp_lib_get_port(). To keep the bitmap on the stack and not
fire the CONFIG_FRAME_WARN error at build time, we round up the table
size to 128.
The sysctl usage is the same with TCP:
$ dmesg | cut -d ' ' -f 6- | grep "UDP hash"
UDP hash table entries: 65536 (order: 9, 2097152 bytes, vmalloc)
# sysctl net.ipv4.udp_hash_entries
net.ipv4.udp_hash_entries = 65536 # can be changed by uhash_entries
# sysctl net.ipv4.udp_child_hash_entries
net.ipv4.udp_child_hash_entries = 0 # disabled by default
# ip netns add test1
# ip netns exec test1 sysctl net.ipv4.udp_hash_entries
net.ipv4.udp_hash_entries = -65536 # share the global table
# sysctl -w net.ipv4.udp_child_hash_entries=100
net.ipv4.udp_child_hash_entries = 100
# ip netns add test2
# ip netns exec test2 sysctl net.ipv4.udp_hash_entries
net.ipv4.udp_hash_entries = 128 # own a per-netns table with 2^n buckets
We could optimise the hash table lookup/iteration further by removing
the netns comparison for the per-netns one in the future. Also, we
could optimise the sparse udp_hslot layout by putting it in udp_table.
[0]: https://lore.kernel.org/netdev/4ACC2815.7010101@gmail.com/
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove mistaken & from code example in MAP_TYPE_ARRAY docs
Fixes: 1cfa97b30c5a ("bpf, docs: Document BPF_MAP_TYPE_ARRAY")
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://lore.kernel.org/r/20221115095910.86407-1-donald.hunter@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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The NFP documentation is updated to include information about Corigine,
and the new NFP3800 chips. The 'Acquiring Firmware' section is updated
with new information about where to find firmware.
Two new sections are added to expand the coverage of the documentation.
The new sections include:
- Devlink Info
- Configure Device
Signed-off-by: Walter Heymans <walter.heymans@corigine.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@corigine.com>
Reviewed-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20221115090834.738645-1-simon.horman@corigine.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This change documents the process for running the BPF CI before
submitting a patch to the upstream mailing list, similar to what happens
if a patch is send to bpf@vger.kernel.org: it builds kernel and
selftests and runs the latter on different architecture (but it notably
does not cover stylistic checks such as cover letter verification).
Running BPF CI this way can help achieve better test coverage ahead of
patch submission than merely running locally (say, using
tools/testing/selftests/bpf/vmtest.sh), as additional architectures may
be covered as well.
Signed-off-by: Daniel Müller <deso@posteo.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20221114211501.2068684-1-deso@posteo.net
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We don't want to commit to a specific name for these. Simply call them
allocated objects coming from bpf_obj_new, which is completely clear in
itself.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20221114191547.1694267-2-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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