1160900 Commits

Author SHA1 Message Date
Alex Elder
f651334e1e net: ipa: add HW_PARAM_4 GSI register
Starting at IPA v5.0, the number of event rings per EE is defined
in a field in a new HW_PARAM_4 GSI register rather than HW_PARAM_2.
Define this new register and its fields, and update the code that
checks the number of rings supported by hardware to use the proper
field based on IPA version.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-20 08:14:20 +01:00
Alex Elder
37cd29ec84 net: ipa: support different event ring encoding
Starting with IPA v5.0, a channel's event ring index is encoded in
a field in the CH_C_CNTXT_1 GSI register rather than CH_C_CNTXT_0.
Define a new field ID for the former register and encode the event
ring in the appropriate register.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-20 08:14:20 +01:00
Alex Elder
62747512eb net: ipa: avoid setting an undefined field
The GSI channel protocol field in the CH_C_CNTXT_0 GSI register is
widened starting IPA v5.0, making the CHTYPE_PROTOCOL_MSB field
added in IPA v4.5 unnecessary.  Update the code to reflect this.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-20 08:14:20 +01:00
Alex Elder
f75f44ddd4 net: ipa: kill ev_ch_e_cntxt_1_length_encode()
Now that we explicitly define each register field width there is no
need to have a special encoding function for the event ring length.
Add a field for this to the EV_CH_E_CNTXT_1 GSI register, and use it
in place of ev_ch_e_cntxt_1_length_encode() (which can be removed).

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-20 08:14:20 +01:00
Alex Elder
59b12b1d27 net: ipa: kill gsi->virt_raw
Starting at IPA v4.5, almost all GSI registers had their offsets
changed by a fixed amount (shifted downward by 0xd000).  Rather than
defining offsets for all those registers dependent on version, an
adjustment was applied for most register accesses.  This was
implemented in commit cdeee49f3ef7f ("net: ipa: adjust GSI register
addresses").  It was later modified to be a bit more obvious about
the adjusment, in commit 571b1e7e58ad3 ("net: ipa: use a separate
pointer for adjusted GSI memory").

We now are able to define every GSI register with its own offset, so
there's no need to implement this special adjustment.

So get rid of the "virt_raw" pointer, and just maintain "virt" as
the (non-adjusted) base address of I/O mapped GSI register memory.

Redefine the offsets of all GSI registers (other than the INTER_EE
ones, which were not subject to the adjustment) for IPA v4.5+,
subtracting 0xd000 from their defined offsets instead.

Move the ERROR_LOG and ERROR_LOG_CLR definitions further down in the
register definition files so all registers are defined in order of
their offset.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-20 08:14:20 +01:00
Alex Elder
ecfa80ce3b net: ipa: fix an incorrect assignment
I spotted an error in a patch posted this week, unfortunately just
after it got accepted.  The effect of the bug is that time-based
interrupt moderation is disabled.  This is not technically a bug,
but it is not what is intended.  The problem is that a |= assignment
got implemented as a simple assignment, so the previously assigned
value was ignored.

Fixes: edc6158b18af ("net: ipa: define fields for event-ring related registers")
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-20 08:14:20 +01:00
Lorenzo Bianconi
1c93e48cc3 net: dpaa2-eth: do not always set xsk support in xdp_features flag
Do not always add NETDEV_XDP_ACT_XSK_ZEROCOPY bit in xdp_features flag
but check if the NIC really supports it.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>
Link: https://lore.kernel.org/r/3dba6ea42dc343a9f2d7d1a6a6a6c173235e1ebf.1676471386.git.lorenzo@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-20 07:49:44 +01:00
Linus Torvalds
c9c3395d5e Linux 6.2 v6.2 2023-02-19 14:24:22 -08:00
Linus Torvalds
925cf0457d A single fix for x86:
Revert the recent change to the MTRR code which aimed to support
   SEV-SNP guests on Hyper-V. It cuased a regression on XEN Dom0
   kernels.
 
   The underlying issue of MTTR (mis)handling in the x86 code needs some
   deeper investigation and is definitely not 6.2 material.
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Merge tag 'x86-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fix from Thomas Gleixner:
 "A single fix for x86.

  Revert the recent change to the MTRR code which aimed to support
  SEV-SNP guests on Hyper-V. It caused a regression on XEN Dom0 kernels.

  The underlying issue of MTTR (mis)handling in the x86 code needs some
  deeper investigation and is definitely not 6.2 material"

* tag 'x86-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mtrr: Revert 90b926e68f50 ("x86/pat: Fix pat_x_mtrr_type() for MTRR disabled case")
2023-02-18 17:57:16 -08:00
Linus Torvalds
0097c18e45 A fix for a long standing issue in the alarmtimer code:
Posix-timers armed with a short interval with an ignored signal result
  in an unpriviledged DoS. Due to the ignored signal the timer switches
  into self rearm mode. This issue had been "fixed" before but a rework of
  the alarmtimer code 5 years ago lost that workaround.
 
  There is no real good solution for this issue, which is also worked around
  in the core posix-timer code in the same way, but it certainly moved way
  up on the ever growing todo list.
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Merge tag 'timers-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fix from Thomas Gleixner:
 "A fix for a long standing issue in the alarmtimer code.

  Posix-timers armed with a short interval with an ignored signal result
  in an unpriviledged DoS. Due to the ignored signal the timer switches
  into self rearm mode. This issue had been "fixed" before but a rework
  of the alarmtimer code 5 years ago lost that workaround.

  There is no real good solution for this issue, which is also worked
  around in the core posix-timer code in the same way, but it certainly
  moved way up on the ever growing todo list"

* tag 'timers-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  alarmtimer: Prevent starvation by small intervals and SIG_IGN
2023-02-18 17:46:50 -08:00
Linus Torvalds
a33d946cbb A single fix for the PCI/MSI infrastructure:
The addition of the new alloc/free interfaces in this cycle forgot to
  add stub functions for pci_msix_alloc_irq_at() and pci_msix_free_irq()
  for the CONFIG_PCI_MSI=n case
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Merge tag 'irq-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fix from Thomas Gleixner:
 "A single build fix for the PCI/MSI infrastructure.

  The addition of the new alloc/free interfaces in this cycle forgot to
  add stub functions for pci_msix_alloc_irq_at() and pci_msix_free_irq()
  for the CONFIG_PCI_MSI=n case"

* tag 'irq-urgent-2023-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  PCI/MSI: Provide missing stubs for CONFIG_PCI_MSI=n
2023-02-18 17:38:18 -08:00
Thomas Gleixner
6f3ee0e22b irqchip updates for 6.3
- New and improved irqdomain locking, closing a number of races that
   became apparent now that we are able to probe drivers in parallel
 
 - A bunch of OF node refcounting bugs have been fixed
 
 - We now have a new IPI mux, lifted from the Apple AIC code and
   made common. It is expected that riscv will eventually benefit
   from it
 
 - Two small fixes for the Broadcom L2 drivers
 
 - Various cleanups and minor bug fixes
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Merge tag 'irqchip-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core

Pull irqchip updates from Marc Zyngier:

   - New and improved irqdomain locking, closing a number of races that
     became apparent now that we are able to probe drivers in parallel

   - A bunch of OF node refcounting bugs have been fixed

   - We now have a new IPI mux, lifted from the Apple AIC code and
     made common. It is expected that riscv will eventually benefit
     from it

   - Two small fixes for the Broadcom L2 drivers

   - Various cleanups and minor bug fixes

Link: https://lore.kernel.org/r/20230218143452.3817627-1-maz@kernel.org
2023-02-19 00:07:56 +01:00
Linus Torvalds
5e725d112e x86:
* zero all padding for KVM_GET_DEBUGREGS
 
 * fix rST warning
 
 * disable vPMU support on hybrid CPUs
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm/x86 fixes from Paolo Bonzini:

 - zero all padding for KVM_GET_DEBUGREGS

 - fix rST warning

 - disable vPMU support on hybrid CPUs

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: initialize all of the kvm_debugregs structure before sending it to userspace
  perf/x86: Refuse to export capabilities for hybrid PMUs
  KVM: x86/pmu: Disable vPMU support on hybrid CPUs (host PMUs)
  Documentation/hw-vuln: Fix rST warning
2023-02-18 11:07:32 -08:00
Linus Torvalds
0c2822b116 arm64 regression fix for 6.2
- Fix 'perf' regression for non-standard CPU PMU hardware (i.e. Apple M1)
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 regression fix from Will Deacon:
 "Apologies for the _extremely_ late pull request here, but we had a
  'perf' (i.e. CPU PMU) regression on the Apple M1 reported on Wednesday
  [1] which was introduced by bd2756811766 ("perf: Rewrite core context
  handling") during the merge window.

  Mark and I looked into this and noticed an additional problem caused
  by the same patch, where the 'CHAIN' event (used to combine two
  adjacent 32-bit counters into a single 64-bit counter) was not being
  filtered correctly. Mark posted a series on Thursday [2] which
  addresses both of these regressions and I queued it the same day.

  The changes are small, self-contained and have been confirmed to fix
  the original regression.

  Summary:

   - Fix 'perf' regression for non-standard CPU PMU hardware (i.e. Apple
     M1)"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: perf: reject CHAIN events at creation time
  arm_pmu: fix event CPU filtering
2023-02-18 10:10:49 -08:00
Linus Torvalds
0e9fd589e6 block-6.2-2023-02-17
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Merge tag 'block-6.2-2023-02-17' of git://git.kernel.dk/linux

Pull block fix from Jens Axboe:
 "I guess this is what can happen when you prep things early for going
  away, something else comes in last minute. This one fixes another
  regression in 6.2 for NVMe, from this release, and hence we should
  probably get it submitted for 6.2.

  Still waiting for the original reporter (see bugzilla linked in the
  commit) to test this, but Keith managed to setup and recreate the
  issue and tested the patch that way"

* tag 'block-6.2-2023-02-17' of git://git.kernel.dk/linux:
  nvme-pci: refresh visible attrs for cmb attributes
2023-02-18 09:56:58 -08:00
Thomas Weißschuh
4ecc96cba8 xen: sysfs: make kobj_type structure constant
Since commit ee6d3dd4ed48 ("driver core: make kobj_type constant.")
the driver core allows the usage of const struct kobj_type.

Take advantage of this to constify the structure definition to prevent
modification at runtime.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20230216-kobj_type-xen-v1-1-742423de7d71@weissschuh.net
Signed-off-by: Juergen Gross <jgross@suse.com>
2023-02-18 16:50:21 +01:00
Miquel Raynal
ed9a8ad7d8 ieee802154: Drop device trackers
In order to prevent a device from disappearing when a background job was
started, dev_hold() and dev_put() calls were made. During the
stabilization phase of the scan/beacon features, it was later decided
that removing the device while a background job was ongoing was a valid use
case, and we should instead stop the background job and then remove the
device, rather than prevent the device from being removed. This is what
is currently done, which means manually reference counting the device
during background jobs is no longer needed.

Fixes: ed3557c947e1 ("ieee802154: Add support for user scanning requests")
Fixes: 9bc114504b07 ("ieee802154: Add support for user beaconing requests")
Reported-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230214135035.1202471-7-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
2023-02-18 16:49:53 +01:00
Miquel Raynal
61d7dddf46 mac802154: Fix an always true condition
At this stage we simply do not care about the delayed work value,
because active scan is not yet supported, so we can blindly queue
another work once a beacon has been sent.

It fixes a smatch warning:
    mac802154_beacon_worker() warn: always true condition
    '(local->beacon_interval >= 0) => (0-u32max >= 0)'

Fixes: 3accf4762734 ("mac802154: Handle basic beaconing")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230214135035.1202471-6-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
2023-02-18 16:47:26 +01:00
Miquel Raynal
1375e3ba9d mac802154: Send beacons using the MLME Tx path
Using ieee802154_subif_start_xmit() to bypass the net queue when
sending beacons is broken because it does not acquire the
HARD_TX_LOCK(), hence not preventing datagram buffers to be smashed by
beacons upon contention situation. Using the mlme_tx helper is not the
best fit either but at least it is not buggy and has little-to-no
performance hit. More details are given in the comment explaining this
choice in the code.

Fixes: 3accf4762734 ("mac802154: Handle basic beaconing")
Reported-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230214135035.1202471-5-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
2023-02-18 16:44:53 +01:00
Miquel Raynal
1edecbd0bd ieee802154: Change error code on monitor scan netlink request
Returning EPERM gives the impression that "right now" it is not
possible, but "later" it could be, while what we want to express is the
fact that this is not currently supported at all (might change in the
future). So let's return EOPNOTSUPP instead.

Fixes: ed3557c947e1 ("ieee802154: Add support for user scanning requests")
Suggested-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230214135035.1202471-4-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
2023-02-18 16:41:23 +01:00
Miquel Raynal
a0b6106672 ieee802154: Convert scan error messages to extack
Instead of printing error messages in the kernel log, let's use extack.
When there is a netlink error returned that could be further specified
with a string, use extack as well.

Apply this logic to the very recent scan/beacon infrastructure.

Fixes: ed3557c947e1 ("ieee802154: Add support for user scanning requests")
Fixes: 9bc114504b07 ("ieee802154: Add support for user beaconing requests")
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230214135035.1202471-3-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
2023-02-18 16:38:41 +01:00
Miquel Raynal
648324c9b6 ieee802154: Use netlink policies when relevant on scan parameters
Instead of open-coding scan parameters (page, channels, duration, etc),
let's use the existing NLA_POLICY* macros. This help greatly reducing
the error handling and clarifying the overall logic.

Fixes: ed3557c947e1 ("ieee802154: Add support for user scanning requests")
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230214135035.1202471-2-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
2023-02-18 16:35:10 +01:00
Marc Zyngier
a83bf176fe Merge branch irq/bcm-l2-fixes into irq/irqchip-next
* irq/bcm-l2-fixes:
  : .
  : Broadcom L2 irqchip fixes for correct handling of level interrupts,
  : courtesy of Florian Fainelli.
  : .
  irqchip/irq-bcm7120-l2: Set IRQ_LEVEL for level triggered interrupts
  irqchip/irq-brcmstb-l2: Set IRQ_LEVEL for level triggered interrupts

Signed-off-by: Marc Zyngier <maz@kernel.org>
2023-02-18 14:25:09 +00:00
Florian Fainelli
13a157b38c irqchip/irq-bcm7120-l2: Set IRQ_LEVEL for level triggered interrupts
When support for the interrupt controller was added with a5042de2688d,
we forgot to update the flags to be set to contain IRQ_LEVEL. While the
flow handler is correct, the output from /proc/interrupts does not show
such interrupts as being level triggered when they are, correct that.

Fixes: a5042de2688d ("irqchip: bcm7120-l2: Add Broadcom BCM7120-style Level 2 interrupt controller")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221216230934.2478345-3-f.fainelli@gmail.com
2023-02-18 14:23:41 +00:00
Florian Fainelli
94debe03e8 irqchip/irq-brcmstb-l2: Set IRQ_LEVEL for level triggered interrupts
When support for the level triggered interrupt controller flavor was
added with c0ca7262088e, we forgot to update the flags to be set to
contain IRQ_LEVEL. While the flow handler is correct, the output from
/proc/interrupts does not show such interrupts as being level triggered
when they are, correct that.

Fixes: c0ca7262088e ("irqchip/brcmstb-l2: Add support for the BCM7271 L2 controller")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221216230934.2478345-2-f.fainelli@gmail.com
2023-02-18 14:23:41 +00:00
Hans de Goede
0d9bdd8a55 platform/x86: nvidia-wmi-ec-backlight: Add force module parameter
On some Lenovo Legion models, the backlight might be driven by either
one of nvidia_wmi_ec_backlight or amdgpu_bl0 at different times.

When the Nvidia WMI EC backlight interface reports the backlight is
controlled by the EC, the current backlight handling only registers
nvidia_wmi_ec_backlight (and registers no other backlight interfaces).

This hides (never registers) the amdgpu_bl0 interface, where as prior
to 6.1.4 users would have both nvidia_wmi_ec_backlight and amdgpu_bl0
and could work around things in userspace.

Add a force module parameter which can be used with acpi_backlight=native
to restore the old behavior as a workound (for now) by passing:

"acpi_backlight=native nvidia-wmi-ec-backlight.force=1"

Fixes: 8d0ca287fd8c ("platform/x86: nvidia-wmi-ec-backlight: Use acpi_video_get_backlight_type()")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217026
Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Daniel Dadap <ddadap@nvidia.com>
Link: https://lore.kernel.org/r/20230217144208.5721-1-hdegoede@redhat.com
2023-02-18 11:45:52 +01:00
Gal Pressman
993fd9bd65 net/mlx5e: RX, Remove doubtful unlikely call
When building an skb in non-linear mode, it is not likely nor unlikely
that the xdp buff has fragments, it depends on the size of the packet
received.

Signed-off-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
2023-02-18 01:01:34 -08:00
Tariq Toukan
afce9271fa net/mlx5e: Fix outdated TLS comment
Comment is outdated since
commit 40379a0084c2 ("net/mlx5_fpga: Drop INNOVA TLS support").

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-02-18 01:01:34 -08:00
Tariq Toukan
b5618a6b19 net/mlx5e: Remove unused function mlx5e_sq_xmit_simple
The last usage was removed as part of
commit 40379a0084c2 ("net/mlx5_fpga: Drop INNOVA TLS support").

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-02-18 01:01:34 -08:00
Vlad Buslov
f869bcb0d2 net/mlx5e: Allow offloading of ct 'new' match
Allow offloading filters that match on conntrack 'new' state in order to
enable UDP NEW offload in the following patch.

Unhardcode ct 'established' from ct modify header infrastructure code and
determine correct ct state bit according to the metadata action 'cookie'
field.

Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Reviewed-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-02-18 01:01:34 -08:00
Vlad Buslov
94ceffb48e net/mlx5e: Implement CT entry update
With support for UDP NEW offload the flow_table may now send updates for
existing flows. Support properly replacing existing entries by updating
flow restore_cookie and replacing the rule with new one with the same match
but new mod_hdr action that sets updated ctinfo.

Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Reviewed-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-02-18 01:01:33 -08:00
Parav Pandit
3ac0b6aa89 net/mlx5: Simplify eq list traversal
EQ list is read only while finding the matching EQ.
Hence, avoid *_safe() version.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
2023-02-18 01:01:33 -08:00
Tariq Toukan
9da5294e2c net/mlx5e: Remove redundant page argument in mlx5e_xdp_handle()
Remove the page parameter, it can be derived from the xdp_buff member
of mlx5e_xdp_buff.

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-02-18 01:01:33 -08:00
Tariq Toukan
bfc63c9796 net/mlx5e: Remove redundant page argument in mlx5e_xmit_xdp_buff()
Remove the page parameter, it can be derived from the xdp_buff.

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2023-02-18 01:01:33 -08:00
Tariq Toukan
53ee914271 net/mlx5e: Switch to using napi_build_skb()
Use napi_build_skb() which uses NAPI percpu caches to obtain
skbuff_head instead of inplace allocation.

napi_build_skb() calls napi_skb_cache_get(), which returns a cached
skb, or allocates a bulk of NAPI_SKB_CACHE_BULK (16) if cache is empty.

Performance test:
TCP single stream, single ring, single core, default MTU (1500B).

Before: 26.5 Gbits/sec
After:  30.1 Gbits/sec (+13.6%)

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
2023-02-18 01:01:33 -08:00
Jan Beulich
20e7da1bbb x86/Xen: drop leftover VM-assist uses
Both the 4Gb-segments and the PAE-extended-CR3 one are applicable to
32-bit guests only. The PAE-extended-CR3 use, furthermore, was redundant
with the PAE_MODE ELF note anyway.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>

Link: https://lore.kernel.org/r/215515af-cfb9-3237-03ba-3312e3fa0d34@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
2023-02-18 09:59:01 +01:00
Linus Torvalds
38f8ccde04 Six hotfixes. Five are cc:stable: four for MM, one for nilfs2. Also a
MAINTAINERS update.
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Merge tag 'mm-hotfixes-stable-2023-02-17-15-16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "Six hotfixes. Five are cc:stable: four for MM, one for nilfs2.

  Also a MAINTAINERS update"

* tag 'mm-hotfixes-stable-2023-02-17-15-16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  nilfs2: fix underflow in second superblock position calculations
  hugetlb: check for undefined shift on 32 bit architectures
  mm/migrate: fix wrongly apply write bit after mkdirty on sparc64
  MAINTAINERS: update FPU EMULATOR web page
  mm/MADV_COLLAPSE: set EAGAIN on unexpected page refcount
  mm/filemap: fix page end in filemap_get_read_batch
2023-02-17 17:51:40 -08:00
Ryusuke Konishi
99b9402a36 nilfs2: fix underflow in second superblock position calculations
Macro NILFS_SB2_OFFSET_BYTES, which computes the position of the second
superblock, underflows when the argument device size is less than 4096
bytes.  Therefore, when using this macro, it is necessary to check in
advance that the device size is not less than a lower limit, or at least
that underflow does not occur.

The current nilfs2 implementation lacks this check, causing out-of-bound
block access when mounting devices smaller than 4096 bytes:

 I/O error, dev loop0, sector 36028797018963960 op 0x0:(READ) flags 0x0
 phys_seg 1 prio class 2
 NILFS (loop0): unable to read secondary superblock (blocksize = 1024)

In addition, when trying to resize the filesystem to a size below 4096
bytes, this underflow occurs in nilfs_resize_fs(), passing a huge number
of segments to nilfs_sufile_resize(), corrupting parameters such as the
number of segments in superblocks.  This causes excessive loop iterations
in nilfs_sufile_resize() during a subsequent resize ioctl, causing
semaphore ns_segctor_sem to block for a long time and hang the writer
thread:

 INFO: task segctord:5067 blocked for more than 143 seconds.
      Not tainted 6.2.0-rc8-syzkaller-00015-gf6feea56f66d #0
 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
 task:segctord        state:D stack:23456 pid:5067  ppid:2
 flags:0x00004000
 Call Trace:
  <TASK>
  context_switch kernel/sched/core.c:5293 [inline]
  __schedule+0x1409/0x43f0 kernel/sched/core.c:6606
  schedule+0xc3/0x190 kernel/sched/core.c:6682
  rwsem_down_write_slowpath+0xfcf/0x14a0 kernel/locking/rwsem.c:1190
  nilfs_transaction_lock+0x25c/0x4f0 fs/nilfs2/segment.c:357
  nilfs_segctor_thread_construct fs/nilfs2/segment.c:2486 [inline]
  nilfs_segctor_thread+0x52f/0x1140 fs/nilfs2/segment.c:2570
  kthread+0x270/0x300 kernel/kthread.c:376
  ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
  </TASK>
 ...
 Call Trace:
  <TASK>
  folio_mark_accessed+0x51c/0xf00 mm/swap.c:515
  __nilfs_get_page_block fs/nilfs2/page.c:42 [inline]
  nilfs_grab_buffer+0x3d3/0x540 fs/nilfs2/page.c:61
  nilfs_mdt_submit_block+0xd7/0x8f0 fs/nilfs2/mdt.c:121
  nilfs_mdt_read_block+0xeb/0x430 fs/nilfs2/mdt.c:176
  nilfs_mdt_get_block+0x12d/0xbb0 fs/nilfs2/mdt.c:251
  nilfs_sufile_get_segment_usage_block fs/nilfs2/sufile.c:92 [inline]
  nilfs_sufile_truncate_range fs/nilfs2/sufile.c:679 [inline]
  nilfs_sufile_resize+0x7a3/0x12b0 fs/nilfs2/sufile.c:777
  nilfs_resize_fs+0x20c/0xed0 fs/nilfs2/super.c:422
  nilfs_ioctl_resize fs/nilfs2/ioctl.c:1033 [inline]
  nilfs_ioctl+0x137c/0x2440 fs/nilfs2/ioctl.c:1301
  ...

This fixes these issues by inserting appropriate minimum device size
checks or anti-underflow checks, depending on where the macro is used.

Link: https://lkml.kernel.org/r/0000000000004e1dfa05f4a48e6b@google.com
Link: https://lkml.kernel.org/r/20230214224043.24141-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: <syzbot+f0c4082ce5ebebdac63b@syzkaller.appspotmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-17 15:07:05 -08:00
Mike Kravetz
ec4288fe63 hugetlb: check for undefined shift on 32 bit architectures
Users can specify the hugetlb page size in the mmap, shmget and
memfd_create system calls.  This is done by using 6 bits within the flags
argument to encode the base-2 logarithm of the desired page size.  The
routine hstate_sizelog() uses the log2 value to find the corresponding
hugetlb hstate structure.  Converting the log2 value (page_size_log) to
potential hugetlb page size is the simple statement:

	1UL << page_size_log

Because only 6 bits are used for page_size_log, the left shift can not be
greater than 63.  This is fine on 64 bit architectures where a long is 64
bits.  However, if a value greater than 31 is passed on a 32 bit
architecture (where long is 32 bits) the shift will result in undefined
behavior.  This was generally not an issue as the result of the undefined
shift had to exactly match hugetlb page size to proceed.

Recent improvements in runtime checking have resulted in this undefined
behavior throwing errors such as reported below.

Fix by comparing page_size_log to BITS_PER_LONG before doing shift.

Link: https://lkml.kernel.org/r/20230216013542.138708-1-mike.kravetz@oracle.com
Link: https://lore.kernel.org/lkml/CA+G9fYuei_Tr-vN9GS7SfFyU1y9hNysnf=PB7kT0=yv4MiPgVg@mail.gmail.com/
Fixes: 42d7395feb56 ("mm: support more pagesizes for MAP_HUGETLB/SHM_HUGETLB")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Reviewed-by: Jesper Juhl <jesperjuhl76@gmail.com>
Acked-by: Muchun Song <songmuchun@bytedance.com>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Cc: Anders Roxell <anders.roxell@linaro.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Sasha Levin <sashal@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-17 15:07:05 -08:00
Peter Xu
96a9c287e2 mm/migrate: fix wrongly apply write bit after mkdirty on sparc64
Nick Bowler reported another sparc64 breakage after the young/dirty
persistent work for page migration (per "Link:" below).  That's after a
similar report [2].

It turns out page migration was overlooked, and it wasn't failing before
because page migration was not enabled in the initial report test
environment.

David proposed another way [2] to fix this from sparc64 side, but that
patch didn't land somehow.  Neither did I check whether there's any other
arch that has similar issues.

Let's fix it for now as simple as moving the write bit handling to be
after dirty, like what we did before.

Note: this is based on mm-unstable, because the breakage was since 6.1 and
we're at a very late stage of 6.2 (-rc8), so I assume for this specific
case we should target this at 6.3.

[1] https://lore.kernel.org/all/20221021160603.GA23307@u164.east.ru/
[2] https://lore.kernel.org/all/20221212130213.136267-1-david@redhat.com/

Link: https://lkml.kernel.org/r/20230216153059.256739-1-peterx@redhat.com
Fixes: 2e3468778dbe ("mm: remember young/dirty bit for page migrations")
Link: https://lore.kernel.org/all/CADyTPExpEqaJiMGoV+Z6xVgL50ZoMJg49B10LcZ=8eg19u34BA@mail.gmail.com/
Signed-off-by: Peter Xu <peterx@redhat.com>
Reported-by: Nick Bowler <nbowler@draconx.ca>
Acked-by: David Hildenbrand <david@redhat.com>
Tested-by: Nick Bowler <nbowler@draconx.ca>
Cc: <regressions@lists.linux.dev>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-17 15:07:05 -08:00
Linus Torvalds
dbeed98d89 powerpc fixes for 6.2 #6
- Prevent fallthrough to hash TLB flush when using radix.
 
 Thanks to: Benjamin Gray, "Erhard F.".
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Merge tag 'powerpc-6.2-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:

 - Prevent fallthrough to hash TLB flush when using radix

Thanks to Benjamin Gray and Erhard Furtner.

* tag 'powerpc-6.2-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s: Prevent fallthrough to hash TLB flush when using radix
2023-02-17 14:53:37 -08:00
Linus Torvalds
75cc9c4716 NFS client fixes for Linux 6.2
Bugfix:
 - Revert "NFSv4.2: Change the default KConfig value for READ_PLUS"
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Merge tag 'nfs-for-6.2-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client fix from Trond Myklebust:
 "Unfortunately, we found another bug in the NFSv4.2 READ_PLUS code.

  Since it has not been possible to fix the bug in time for the 6.2
  release, let's just revert the Kconfig change that enables it:

   - Revert 'NFSv4.2: Change the default KConfig value for READ_PLUS'"

* tag 'nfs-for-6.2-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  Revert "NFSv4.2: Change the default KConfig value for READ_PLUS"
2023-02-17 14:49:11 -08:00
Linus Torvalds
03dad2f0c7 sound fixes for 6.2
A few last-minute fixes.  The significant ones are two ASoC SOF
 regression fixes while the rest are trivial HD-audio quirks.
 All are small / one-liners and should be pretty safe to take.
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Merge tag 'sound-fix-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A few last-minute fixes. The significant ones are two ASoC SOF
  regression fixes while the rest are trivial HD-audio quirks.

  All are small / one-liners and should be pretty safe to take"

* tag 'sound-fix-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: SOF: Intel: hda-dai: fix possible stream_tag leak
  ALSA: hda/realtek: Enable mute/micmute LEDs and speaker support for HP Laptops
  ALSA: hda/realtek: fix mute/micmute LEDs don't work for a HP platform.
  ALSA: hda/realtek - fixed wrong gpio assigned
  ALSA: hda: Fix codec device field initializan
  ALSA: hda/conexant: add a new hda codec SN6180
  ASoC: SOF: ops: refine parameters order in function snd_sof_dsp_update8
2023-02-17 14:44:31 -08:00
Linus Torvalds
4b89ca5a78 gpio fixes for v6.2
- fix a memory leak in gpio-sim
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Merge tag 'gpio-fixes-for-v6.2-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fix from Bartosz Golaszewski:

 - fix a memory leak in gpio-sim that was triggered every time libgpiod
   tests are run in user-space

* tag 'gpio-fixes-for-v6.2-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: sim: fix a memory leak
2023-02-17 13:58:20 -08:00
Linus Torvalds
6d2e62e162 ata fixes for 6.2-rc8
Three small fixes for 6.2 final:
 
   * Disable READ LOG DMA EXT for Samsung MZ7LH drives as these drives
     choke on that command, from Patrick.
 
   * Add Intel Tiger Lake UP{3,4} to the list of supported AHCI
     controllers (this is not technically a bug fix, but it is trivial
     enough that I add it here), from SImon.
 
   * Fix code comments in the pata_octeon_cf driver as incorrect
     formatting was causing warnings from kernel-doc, from Randy.
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Merge tag 'ata-6.2-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ata fixes from Damien Le Moal:
 "Three small fixes for 6.2 final:

   - Disable READ LOG DMA EXT for Samsung MZ7LH drives as these drives
     choke on that command, from Patrick.

   - Add Intel Tiger Lake UP{3,4} to the list of supported AHCI
     controllers (this is not technically a bug fix, but it is trivial
     enough that I add it here), from Simon.

   - Fix code comments in the pata_octeon_cf driver as incorrect
     formatting was causing warnings from kernel-doc, from Randy"

* tag 'ata-6.2-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata: pata_octeon_cf: drop kernel-doc notation
  ata: ahci: Add Tiger Lake UP{3,4} AHCI controller
  ata: libata-core: Disable READ LOG DMA EXT for Samsung MZ7LH
2023-02-17 13:53:09 -08:00
Linus Torvalds
bda6cfae33 MMC core:
- Fix potential resource leaks in SDIO card detection error path
 
 MMC host:
  - jz4740: Decrease maximum clock rate to workaround bug on JZ4760(B)
  - meson-gx: Fix SDIO support to get some WiFi modules to work again
  - mmc_spi: Fix error handling in ->probe()
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Merge tag 'mmc-v6.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC core:
   - Fix potential resource leaks in SDIO card detection error path

  MMC host:
   - jz4740: Decrease maximum clock rate to workaround bug on JZ4760(B)
   - meson-gx: Fix SDIO support to get some WiFi modules to work again
   - mmc_spi: Fix error handling in ->probe()"

* tag 'mmc-v6.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: jz4740: Work around bug on JZ4760(B)
  mmc: mmc_spi: fix error handling in mmc_spi_probe()
  mmc: sdio: fix possible resource leaks in some error paths
  mmc: meson-gx: fix SDIO mode if cap_sdio_irq isn't set
2023-02-17 13:48:54 -08:00
Linus Torvalds
64e0253df6 Misc scheduler fixes:
- Fix user-after-free bug in call_usermodehelper_exec()
  - Fix missing user_cpus_ptr update in __set_cpus_allowed_ptr_locked()
  - Fix PSI use-after-free bug in ep_remove_wait_queue()
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2023-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:

 - Fix user-after-free bug in call_usermodehelper_exec()

 - Fix missing user_cpus_ptr update in __set_cpus_allowed_ptr_locked()

 - Fix PSI use-after-free bug in ep_remove_wait_queue()

* tag 'sched-urgent-2023-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/psi: Fix use-after-free in ep_remove_wait_queue()
  sched/core: Fix a missed update of user_cpus_ptr
  freezer,umh: Fix call_usermode_helper_exec() vs SIGKILL
2023-02-17 13:45:09 -08:00
Martin KaFai Lau
168de02335 selftests/bpf: Add bpf_fib_lookup test
This patch tests the bpf_fib_lookup helper when looking up
a neigh in NUD_FAILED and NUD_STALE state. It also adds test
for the new BPF_FIB_LOOKUP_SKIP_NEIGH flag.

Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230217205515.3583372-2-martin.lau@linux.dev
2023-02-17 22:12:04 +01:00
Martin KaFai Lau
31de4105f0 bpf: Add BPF_FIB_LOOKUP_SKIP_NEIGH for bpf_fib_lookup
The bpf_fib_lookup() also looks up the neigh table.
This was done before bpf_redirect_neigh() was added.

In the use case that does not manage the neigh table
and requires bpf_fib_lookup() to lookup a fib to
decide if it needs to redirect or not, the bpf prog can
depend only on using bpf_redirect_neigh() to lookup the
neigh. It also keeps the neigh entries fresh and connected.

This patch adds a bpf_fib_lookup flag, SKIP_NEIGH, to avoid
the double neigh lookup when the bpf prog always call
bpf_redirect_neigh() to do the neigh lookup. The params->smac
output is skipped together when SKIP_NEIGH is set because
bpf_redirect_neigh() will figure out the smac also.

Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230217205515.3583372-1-martin.lau@linux.dev
2023-02-17 22:12:04 +01:00
Pu Lehui
49b5e77ae3 riscv, bpf: Add bpf trampoline support for RV64
BPF trampoline is the critical infrastructure of the BPF subsystem, acting
as a mediator between kernel functions and BPF programs. Numerous important
features, such as using BPF program for zero overhead kernel introspection,
rely on this key component. We can't wait to support bpf trampoline on RV64.
The related tests have passed, as well as the test_verifier with no new
failure ceses.

Signed-off-by: Pu Lehui <pulehui@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Björn Töpel <bjorn@rivosinc.com>
Acked-by: Björn Töpel <bjorn@rivosinc.com>
Link: https://lore.kernel.org/bpf/20230215135205.1411105-5-pulehui@huaweicloud.com
2023-02-17 21:45:30 +01:00