Commit graph

1,464,522 commits

Author SHA1 Message Date
Max Brener
6075dd69c5 Input: libps2 - embed WARN_ON(1) macros into their enclosing if statements
Make WARN_ON(1) statements embedded inside their respective 'if' expressions,
to improve code clarity.

Signed-off-by: Max Brener <linmaxi@gmail.com>
Link: https://patch.msgid.link/20260214203725.6463-1-linmaxi@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-02-17 10:05:27 -08:00
Linus Torvalds
d295082ea6 SPDX updates for 7.0-rc1
Here are two small changes that add some missing SPDX license lines to
 some core kernel files.  These are:
   - adding SPDX license lines to kdb files
   - adding SPDX license lines to the remaining kernel/ files
 
 Both of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'spdx-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx

Pull SPDX updates from Greg KH:
 "Here are two small changes that add some missing SPDX license lines to
  some core kernel files. These are:

   - adding SPDX license lines to kdb files

   - adding SPDX license lines to the remaining kernel/ files

  Both of these have been in linux-next for a while with no reported
  issues"

* tag 'spdx-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx:
  kernel: debug: Add SPDX license ids to kdb files
  kernel: add SPDX-License-Identifier lines
2026-02-17 09:46:03 -08:00
Linus Torvalds
17f8d20093 USB / Thunderbolt changes for 7.0-rc1
Here is the "big" set of USB and Thunderbolt driver updates for 7.0-rc1.
 Overall more lines were removed than added, thanks to dropping the
 obsolete isp1362 USB host controller driver, always a nice change.
 
 Other than that, nothing major happening here, highlights are:
   - lots of dwc3 driver updates and new hardware support added
   - usb gadget function driver updates
   - usb phy driver updates
   - typec driver updates and additions
   - USB rust binding updates for syntax and formatting changes
   - more usb serial device ids added
   - other smaller USB core and driver updates and additions
 
 All of these have been in linux-next for a long time, with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt updates from Greg KH:
 "Here is the "big" set of USB and Thunderbolt driver updates for
  7.0-rc1. Overall more lines were removed than added, thanks to
  dropping the obsolete isp1362 USB host controller driver, always a
  nice change.

  Other than that, nothing major happening here, highlights are:

   - lots of dwc3 driver updates and new hardware support added

   - usb gadget function driver updates

   - usb phy driver updates

   - typec driver updates and additions

   - USB rust binding updates for syntax and formatting changes

   - more usb serial device ids added

   - other smaller USB core and driver updates and additions

  All of these have been in linux-next for a long time, with no reported
  problems"

* tag 'usb-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (77 commits)
  usb: typec: ucsi: Add Thunderbolt alternate mode support
  usb: typec: hd3ss3220: Check if regulator needs to be switched
  usb: phy: tegra: parametrize PORTSC1 register offset
  usb: phy: tegra: parametrize HSIC PTS value
  usb: phy: tegra: return error value from utmi_wait_register
  usb: phy: tegra: cosmetic fixes
  dt-bindings: usb: renesas,usbhs: Add RZ/G3E SoC support
  usb: dwc2: fix resume failure if dr_mode is host
  usb: cdns3: fix role switching during resume
  usb: dwc3: gadget: Move vbus draw to workqueue context
  USB: serial: option: add Telit FN920C04 RNDIS compositions
  usb: dwc3: Log dwc3 address in traces
  usb: gadget: tegra-xudc: Add handling for BLCG_COREPLL_PWRDN
  usb: phy: tegra: add HSIC support
  usb: phy: tegra: use phy type directly
  usb: typec: ucsi: Enforce mode selection for cros_ec_ucsi
  usb: typec: ucsi: Support mode selection to activate altmodes
  usb: typec: Introduce mode_selection bit
  usb: typec: Implement mode selection
  usb: typec: Expose alternate mode priority via sysfs
  ...
2026-02-17 09:36:43 -08:00
Linus Torvalds
3ad7945754 TTY / Serial driver updates for 7.0-rc1
Here is the small amount of tty and serial driver updates for 7.0-rc1.
 Nothing major in here at all, just some driver updates and minor tweaks
 and cleanups including:
   - sh-sci serial driver updates
   - 8250 driver updates
   - attempt to make the tty ports have their own workqueue, but was
     reverted after testing found it to have problems on some platforms.
     This will probably come back for 7.1 after it has been reworked and
     resubmitted
   - other tiny tty driver changes
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty / serial driver updates from Greg KH:
 "Here is the small amount of tty and serial driver updates for 7.0-rc1.
  Nothing major in here at all, just some driver updates and minor
  tweaks and cleanups including:

   - sh-sci serial driver updates

   - 8250 driver updates

   - attempt to make the tty ports have their own workqueue, but was
     reverted after testing found it to have problems on some platforms.

     This will probably come back for 7.1 after it has been reworked and
     resubmitted

   - other tiny tty driver changes

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'tty-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (49 commits)
  Revert "tty: tty_port: add workqueue to flip TTY buffer"
  tty: tty_port: add workqueue to flip TTY buffer
  serial: 8250_pci: Remove custom deprecated baud setting routine
  serial: 8250_omap: Remove custom deprecated baud setting routine
  dt-bindings: serial: renesas,scif: Document RZ/G3L SoC
  serial: 8250: omap: set out-of-band wakeup if wakeup pinctrl exists
  tty: hvc-iucv: Remove KMSG_COMPONENT macro
  dt-bindings: serial: google,goldfish-tty: Convert to DT schema
  dt-bindings: serial: sh-sci: Fold single-entry compatibles into enum
  serial: 8250: 8250_omap.c: Clear DMA RX running status only after DMA termination is done
  serial: 8250: 8250_omap.c: Add support for handling UART error conditions
  serial: SH_SCI: improve "DMA support" prompt
  serial: Kconfig: fix ordering of entries for menu display
  serial: 8250: fix ordering of entries for menu display
  serial: imx: change SERIAL_IMX_CONSOLE to bool
  8250_men_mcb: drop unneeded MODULE_ALIAS
  serial: men_z135_uart: drop unneeded MODULE_ALIAS
  dt-bindings: serial: renesas,rsci: Document RZ/V2H(P) and RZ/V2N SoCs
  serial: rsci: Convert to FIELD_MODIFY()
  dt-bindings: serial: 8250: add SpacemiT K3 UART compatible
  ...
2026-02-17 09:30:52 -08:00
Linus Torvalds
a5f22b9b13 Staging driver updates for 7.0-rc1
Here is the big set of staging driver updates for 7.0-rc1.  Well, not
 that big, just lots of tiny coding style cleanups primarily in one
 driver as everyone seems to have glomed onto it for some reason that
 escapes me (is there a tutorial out there somewhere pointing people at
 this?)
 
 Not much overall, the changes can be summarized as:
   - cleanups for the rtl8723bs driver, so many cleanups...
   - vme_user driver cleanups
   - sm750fb driver cleanups
   - tiny greybus driver cleanups
   - other really small staging driver cleanups
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver updates from Greg KH:
 "Here is the big set of staging driver updates for 7.0-rc1. Well, not
  that big, just lots of tiny coding style cleanups primarily in one
  driver as everyone seems to have glomed onto it for some reason that
  escapes me (is there a tutorial out there somewhere pointing people at
  this?)

  Not much overall, the changes can be summarized as:

   - cleanups for the rtl8723bs driver, so many cleanups...

   - vme_user driver cleanups

   - sm750fb driver cleanups

   - tiny greybus driver cleanups

   - other really small staging driver cleanups

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (119 commits)
  staging: rtl8723bs: refactor ODM_SetIQCbyRFpath to reduce duplication
  staging: rtl8723bs: rename CamelCase function Set_MSR to set_msr
  staging: rtl8723bs: remove unnecessary blank lines in rtw_io.c
  staging: rtl8723bs: remove stale TODO item regarding %pM
  staging: rtl8723bs: remove unused allocation wrapper functions
  staging: rtl8723bs: use standard skb allocation APIs
  staging: rtl8723bs: replace rtw_zmalloc() with kzalloc()
  staging: rtl8723bs: replace rtw_malloc() with kmalloc()
  staging: rtl8723bs: introduce kmemdup() where applicable
  staging: sm750fb: Clean up variable names
  staging: rtl8723bs: fix null dereference in find_network
  staging: rtl8723bs: use unaligned access macros in rtw_security.c
  staging: rtl8723bs: fix potential race in expire_timeout_chk
  staging: rtl8723bs: remove dead debugging code in rtw_mlme_ext.c
  staging: rtl8723bs: modernize hex output in rtw_report_sec_ie
  staging: rtl8723bs: fix spacing around operators
  staging: rtl8723bs: rename u1bTmp to val
  staging: rtl8723bs: remove unused private debug counters
  staging: rtl8723bs: remove thread wraper functions and add IS_ERR() check
  staging: rtl8723bs: fix firmware memory leak on error
  ...
2026-02-17 09:20:58 -08:00
Linus Torvalds
505d195b0f Char/Misc/IIO driver changes for 7.0-rc1
Here is the big set of char/misc/iio and other smaller driver subsystem
 changes for 7.0-rc1.  Lots of little things in here, including:
   - Loads of iio driver changes and updates and additions
   - gpib driver updates
   - interconnect driver updates
   - i3c driver updates
   - hwtracing (coresight and intel) driver updates
   - deletion of the obsolete mwave driver
   - binder driver updates (rust and c versions)
   - mhi driver updates (causing a merge conflict, see below)
   - mei driver updates
   - fsi driver updates
   - eeprom driver updates
   - lots of other small char and misc driver updates and cleanups
 
 All of these have been in linux-next for a while, with no reported
 issues except for a merge conflict with your tree due to the mhi driver
 changes in the drivers/net/wireless/ath/ath12k/mhi.c file.  To fix that
 up, just delete the "auto_queue" structure fields being set, see this
 message for the full change needed:
 	https://lore.kernel.org/r/aXD6X23btw8s-RZP@sirena.org.uk
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc/IIO driver updates from Greg KH:
 "Here is the big set of char/misc/iio and other smaller driver
  subsystem changes for 7.0-rc1. Lots of little things in here,
  including:

   - Loads of iio driver changes and updates and additions

   - gpib driver updates

   - interconnect driver updates

   - i3c driver updates

   - hwtracing (coresight and intel) driver updates

   - deletion of the obsolete mwave driver

   - binder driver updates (rust and c versions)

   - mhi driver updates (causing a merge conflict, see below)

   - mei driver updates

   - fsi driver updates

   - eeprom driver updates

   - lots of other small char and misc driver updates and cleanups

  All of these have been in linux-next for a while, with no reported
  issues"

* tag 'char-misc-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (297 commits)
  mux: mmio: fix regmap leak on probe failure
  rust_binder: return p from rust_binder_transaction_target_node()
  drivers: android: binder: Update ARef imports from sync::aref
  rust_binder: fix needless borrow in context.rs
  iio: magn: mmc5633: Fix Kconfig for combination of I3C as module and driver builtin
  iio: sca3000: Fix a resource leak in sca3000_probe()
  iio: proximity: rfd77402: Add interrupt handling support
  iio: proximity: rfd77402: Document device private data structure
  iio: proximity: rfd77402: Use devm-managed mutex initialization
  iio: proximity: rfd77402: Use kernel helper for result polling
  iio: proximity: rfd77402: Align polling timeout with datasheet
  iio: cros_ec: Allow enabling/disabling calibration mode
  iio: frequency: ad9523: correct kernel-doc bad line warning
  iio: buffer: buffer_impl.h: fix kernel-doc warnings
  iio: gyro: itg3200: Fix unchecked return value in read_raw
  MAINTAINERS: add entry for ADE9000 driver
  iio: accel: sca3000: remove unused last_timestamp field
  iio: accel: adxl372: remove unused int2_bitmask field
  iio: adc: ad7766: Use iio_trigger_generic_data_rdy_poll()
  iio: magnetometer: Remove IRQF_ONESHOT
  ...
2026-02-17 09:11:04 -08:00
Linus Torvalds
99dfe2d4da block-7.0-20260216
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Merge tag 'block-7.0-20260216' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull more block updates from Jens Axboe:

 - Fix partial IOVA mapping cleanup in error handling

 - Minor prep series ignoring discard return value, as
   the inline value is always known

 - Ensure BLK_FEAT_STABLE_WRITES is set for drbd

 - Fix leak of folio in bio_iov_iter_bounce_read()

 - Allow IOC_PR_READ_* for read-only open

 - Another debugfs deadlock fix

 - A few doc updates

* tag 'block-7.0-20260216' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  blk-mq: use NOIO context to prevent deadlock during debugfs creation
  blk-stat: convert struct blk_stat_callback to kernel-doc
  block: fix enum descriptions kernel-doc
  block: update docs for bio and bvec_iter
  block: change return type to void
  nvmet: ignore discard return value
  md: ignore discard return value
  block: fix partial IOVA mapping cleanup in blk_rq_dma_map_iova
  block: fix folio leak in bio_iov_iter_bounce_read()
  block: allow IOC_PR_READ_* ioctls with BLK_OPEN_READ
  drbd: always set BLK_FEAT_STABLE_WRITES
2026-02-17 08:48:45 -08:00
Linus Torvalds
7b751b01ad io_uring-7.0-20260216
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Merge tag 'io_uring-7.0-20260216' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull more io_uring updates from Jens Axboe:
 "This is a mix of cleanups and fixes. No major fixes in here, just a
  bunch of little fixes. Some of them marked for stable as it fixes
  behavioral issues

   - Fix an issue with SOCKET_URING_OP_SETSOCKOPT for netlink sockets,
     due to a too restrictive check on it having an ioctl handler

   - Remove a redundant SQPOLL check in ring creation

   - Kill dead accounting for zero-copy send, which doesn't use ->buf
     or ->len post the initial setup

   - Fix missing clamp of the allocation hint, which could cause
     allocations to fall outside of the range the application asked
     for. Still within the allowed limits.

   - Fix for IORING_OP_PIPE's handling of direct descriptors

   - Tweak to the API for the newly added BPF filters, making them
     more future proof in terms of how applications deal with them

   - A few fixes for zcrx, fixing a few error handling conditions

   - Fix for zcrx request flag checking

   - Add support for querying the zcrx page size

   - Improve the NO_SQARRAY static branch inc/dec, avoiding busy
     conditions causing too much traffic

   - Various little cleanups"

* tag 'io_uring-7.0-20260216' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring/bpf_filter: pass in expected filter payload size
  io_uring/bpf_filter: move filter size and populate helper into struct
  io_uring/cancel: de-unionize file and user_data in struct io_cancel_data
  io_uring/rsrc: improve regbuf iov validation
  io_uring: remove unneeded io_send_zc accounting
  io_uring/cmd_net: fix too strict requirement on ioctl
  io_uring: delay sqarray static branch disablement
  io_uring/query: add query.h copyright notice
  io_uring/query: return support for custom rx page size
  io_uring/zcrx: check unsupported flags on import
  io_uring/zcrx: fix post open error handling
  io_uring/zcrx: fix sgtable leak on mapping failures
  io_uring: use the right type for creds iteration
  io_uring/openclose: fix io_pipe_fixed() slot tracking for specific slots
  io_uring/filetable: clamp alloc_hint to the configured alloc range
  io_uring/rsrc: replace reg buffer bit field with flags
  io_uring/zcrx: improve types for size calculation
  io_uring/tctx: avoid modifying loop variable in io_ring_add_registered_file
  io_uring: simplify IORING_SETUP_DEFER_TASKRUN && !SQPOLL check
2026-02-17 08:33:49 -08:00
Jocelyn Falempe
948e195dfa drm/panic: depends on PRINTK
drm_panic uses kmsg_dump_register() to register its panic handler, so
it won't work if CONFIG_PRINTK is not enabled.
Let's not pretend it could work without PRINTK, and depends
explicitly on it.

Suggested-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Link: https://patch.msgid.link/20260212100615.989957-1-jfalempe@redhat.com
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
2026-02-17 17:31:59 +01:00
Imre Deak
777a02812f drm/i915/dp: Add missing slice count check during mode validation
Add the missing check for a valid slice count during
mode validation when DSC is enabled.

Cc: Vinod Govindapillai <vinod.govindapillai@intel.com>
Fixes: 745395b51c ("drm/i915/dp: Add intel_dp_mode_valid_with_dsc()")
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260216070421.714884-2-imre.deak@intel.com
(cherry picked from commit ec4db429fd)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2026-02-17 18:31:16 +02:00
Fabian Godehardt
40534d19ed
spi: spidev: fix lock inversion between spi_lock and buf_lock
The spidev driver previously used two mutexes, spi_lock and buf_lock,
but acquired them in different orders depending on the code path:

  write()/read(): buf_lock -> spi_lock
  ioctl():       spi_lock -> buf_lock

This AB-BA locking pattern triggers lockdep warnings and can
cause real deadlocks:

  WARNING: possible circular locking dependency detected
  spidev_ioctl() -> mutex_lock(&spidev->buf_lock)
  spidev_sync_write() -> mutex_lock(&spidev->spi_lock)
  *** DEADLOCK ***

The issue is reproducible with a simple userspace program that
performs write() and SPI_IOC_WR_MAX_SPEED_HZ ioctl() calls from
separate threads on the same spidev file descriptor.

Fix this by simplifying the locking model and removing the lock
inversion entirely. spidev_sync() no longer performs any locking,
and all callers serialize access using spi_lock.

buf_lock is removed since its functionality is fully covered by
spi_lock, eliminating the possibility of lock ordering issues.

This removes the lock inversion and prevents deadlocks without
changing userspace ABI or behaviour.

Signed-off-by: Fabian Godehardt <fg@emlix.com>
Link: https://patch.msgid.link/20260211072616.489522-1-fg@emlix.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-02-17 15:29:16 +00:00
Christian Loehle
93983a9f3b cpuidle: menu: Remove single state handling
cpuidle systems where the governor has no choice because there's only
a single idle state are now handled by cpuidle core and bypass the
governor, so remove the related handling.

Signed-off-by: Christian Loehle <christian.loehle@arm.com>
[ rjw: Rebase on top of the cpuidle changes merged recently ]
Link: https://patch.msgid.link/20260216185005.1131593-5-aboorvad@linux.ibm.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-02-17 15:49:53 +01:00
Christian Loehle
825d5d3479 cpuidle: teo: Remove single state handling
cpuidle systems where the governor has no choice because there's only
a single idle state are now handled by cpuidle core and bypass the
governor, so remove the related handling.

Signed-off-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/20260216185005.1131593-4-aboorvad@linux.ibm.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-02-17 15:49:53 +01:00
Aboorva Devarajan
9b9c0ff095 cpuidle: haltpoll: Remove single state handling
cpuidle systems where the governor has no choice because there's only
a single idle state are now handled by cpuidle core and bypass the
governor, so remove the related handling.

Signed-off-by: Aboorva Devarajan <aboorvad@linux.ibm.com>
Reviewed-by: Christian Loehle <christian.loehle@arm.com>
[ rjw: Extended the change to drop a redundant local variable ]
Link: https://patch.msgid.link/20260216185005.1131593-3-aboorvad@linux.ibm.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-02-17 15:49:24 +01:00
Heiko Carstens
3ee5333fee s390/smp: Avoid calling rebuild_sched_domains() early
Since a recent cpuset code change [1] the kernel emits warnings like this:

WARNING: kernel/cgroup/cpuset.c:966 at rebuild_sched_domains_locked+0xe0/0x120, CPU#0: kworker/0:0/9
Modules linked in:
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.20.0-20260215.rc0.git3.bb7a3fc2c976.300.fc43.s390x+git #1 PREEMPTLAZY
Hardware name: IBM 3931 A01 703 (KVM/Linux)
Workqueue: events topology_work_fn
Krnl PSW : 0704c00180000000 000002922e7af5c4 (rebuild_sched_domains_locked+0xe4/0x120)
...
Call Trace:
 [<000002922e7af5c4>] rebuild_sched_domains_locked+0xe4/0x120
 [<000002922e7af634>] rebuild_sched_domains+0x34/0x50
 [<000002922e6ba232>] process_one_work+0x1b2/0x490
 [<000002922e6bc4b8>] worker_thread+0x1f8/0x3b0
 [<000002922e6c6a98>] kthread+0x148/0x170
 [<000002922e645ffc>] __ret_from_fork+0x3c/0x240
 [<000002922f51f492>] ret_from_fork+0xa/0x30

Reason for this is that the s390 specific smp initialization code schedules
a work which rebuilds scheduling domains way before the scheduler is smp
aware. With the mentioned commit the (invalid) rebuild request is not
anymore silently discarded but instead leads to warning.

Address this by avoiding the early rebuild request.

Reported-by: Marc Hartmayer <marc@linux.ibm.com>
Tested-by: Marc Hartmayer <marc@linux.ibm.com>
Fixes: 6ee43047e8 ("cpuset: Remove unnecessary checks in rebuild_sched_domains_locked") [1]
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2026-02-17 15:49:04 +01:00
Alexander Egorenkov
dd3411959b s390/kexec: Make KEXEC_SIG available when CONFIG_MODULES=n
The commit c8424e776b ("MODSIGN: Export module signature definitions")
replaced the dependency of KEXEC_SIG on SYSTEM_DATA_VERIFICATION with the
dependency on MODULE_SIG_FORMAT. This change disables KEXEC_SIG in s390
kernels built with MODULES=n if nothing else selects MODULE_SIG_FORMAT.

Furthermore, the signature verification in s390 kexec does not require
MODULE_SIG_FORMAT because it requires only the struct module_signature and,
therefore, does not depend on code in kernel/module_signature.c.

But making ARCH_SUPPORTS_KEXEC_SIG depend on SYSTEM_DATA_VERIFICATION is
also incorrect because it makes KEXEC_SIG available on s390 only if some
other arbitrary option (for instance a file system or device driver)
selects it directly or indirectly.

To properly make KEXEC_SIG available for s390 kernels built with MODULES=y
as well as MODULES=n _and_ also not depend on arbitrary options selecting
SYSTEM_DATA_VERIFICATION, set ARCH_SUPPORTS_KEXEC_SIG=y for s390 and select
SYSTEM_DATA_VERIFICATION when KEXEC_SIG=y.

Fixes: c8424e776b ("MODSIGN: Export module signature definitions")
Suggested-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2026-02-17 15:49:03 +01:00
Aboorva Devarajan
e5c9ffc6ae cpuidle: Skip governor when only one idle state is available
On certain platforms (PowerNV systems without a power-mgt DT node),
cpuidle may register only a single idle state. In cases where that
single state is a polling state (state 0), the ladder governor may
incorrectly treat state 1 as the first usable state and pass an
out-of-bounds index. This can lead to a NULL enter callback being
invoked, ultimately resulting in a system crash.

[   13.342636] cpuidle-powernv : Only Snooze is available
[   13.351854] Faulting instruction address: 0x00000000
[   13.376489] NIP [0000000000000000] 0x0
[   13.378351] LR  [c000000001e01974] cpuidle_enter_state+0x2c4/0x668

Fix this by adding a bail-out in cpuidle_select() that returns state 0
directly when state_count <= 1, bypassing the governor and keeping the
tick running.

Fixes: dc2251bf98 ("cpuidle: Eliminate the CPUIDLE_DRIVER_STATE_START symbol")
Signed-off-by: Aboorva Devarajan <aboorvad@linux.ibm.com>
Reviewed-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/20260216185005.1131593-2-aboorvad@linux.ibm.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2026-02-17 15:49:02 +01:00
Imre Deak
552399c435 drm/i915/dp_mst: Allow modes requiring compression for DSC passthrough
The DSC passthrough mode allows a compressed stream to be forwarded
to the sink instead of being decompressed at the last MST branch
device, provided that the branch device supports passthrough and
the sink supports decompression. This enables modes that would not
be possible without compression, as the bandwidth required for the
uncompressed stream exceeds what is available on the full MST path
from source to sink.

Currently, MST mode validation assumes the stream is uncompressed
and uses the corresponding uncompressed minimum link BPP for
bandwidth calculation. Use the minimum compressed link BPP instead
when DSC passthrough is available to enable the modes described
above.

The non-passthrough DSC mode, where the last MST branch device
decompresses the stream, may also allow enabling additional modes.
This would require determining the link bandwidth between the last
branch device and the sink based on the
DFP_Link_Available_Payload_Bandwidth_Number reported by the branch
device for the sink via the ENUM_PATH_RESOURCES MST message.
Supporting this is left for a follow-up for the following reasons:

1. DFP Link Available PBN reporting is not supported by any of the
   available MST devices used for testing.
2. Non-passthrough mode would enable additional modes only if the link
   bandwidth between the last branch device and the sink exceeded that
   of the full MST path. Unless multiple MST devices are used, or link
   training forces a reduced bandwidth between the source and the first
   branch device, both rare cases, this is unlikely.

Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/4332
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260216070421.714884-5-imre.deak@intel.com
2026-02-17 16:21:44 +02:00
Imre Deak
f34c6b31d1 drm/i915/dp_mst: Track min link BPP as x16 fixed-point during mode validation
Track the minimum link BPP as an x16 fixed-point value and, for
clarity, rename the variable storing it to min_link_bpp_x16.

Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260216070421.714884-4-imre.deak@intel.com
2026-02-17 16:21:36 +02:00
Imre Deak
076c05a21a drm/i915/dp: Export intel_dp_compute_min_compressed_bpp_x16()
Export intel_dp_compute_min_compressed_bpp_x16() for use by a
follow-up change validating MST modes with DSC enabled.

Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260216070421.714884-3-imre.deak@intel.com
2026-02-17 16:21:25 +02:00
Imre Deak
ec4db429fd drm/i915/dp: Add missing slice count check during mode validation
Add the missing check for a valid slice count during
mode validation when DSC is enabled.

Cc: Vinod Govindapillai <vinod.govindapillai@intel.com>
Fixes: 745395b51c ("drm/i915/dp: Add intel_dp_mode_valid_with_dsc()")
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260216070421.714884-2-imre.deak@intel.com
2026-02-17 16:20:57 +02:00
Inseo An
71e99ee20f netfilter: nf_tables: fix use-after-free in nf_tables_addchain()
nf_tables_addchain() publishes the chain to table->chains via
list_add_tail_rcu() (in nft_chain_add()) before registering hooks.
If nf_tables_register_hook() then fails, the error path calls
nft_chain_del() (list_del_rcu()) followed by nf_tables_chain_destroy()
with no RCU grace period in between.

This creates two use-after-free conditions:

 1) Control-plane: nf_tables_dump_chains() traverses table->chains
    under rcu_read_lock(). A concurrent dump can still be walking
    the chain when the error path frees it.

 2) Packet path: for NFPROTO_INET, nf_register_net_hook() briefly
    installs the IPv4 hook before IPv6 registration fails.  Packets
    entering nft_do_chain() via the transient IPv4 hook can still be
    dereferencing chain->blob_gen_X when the error path frees the
    chain.

Add synchronize_rcu() between nft_chain_del() and the chain destroy
so that all RCU readers -- both dump threads and in-flight packet
evaluation -- have finished before the chain is freed.

Fixes: 91c7b38dc9 ("netfilter: nf_tables: use new transaction infrastructure to handle chain")
Signed-off-by: Inseo An <y0un9sa@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
2026-02-17 15:04:20 +01:00
Pablo Neira Ayuso
008e7a7c29 net: remove WARN_ON_ONCE when accessing forward path array
Although unlikely, recent support for IPIP tunnels increases chances of
reaching this WARN_ON_ONCE if userspace manages to build a sufficiently
long forward path.

Remove it.

Fixes: ddb94eafab ("net: resolve forwarding path from virtual netdevice and HW destination address")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
2026-02-17 15:04:20 +01:00
Julian Anastasov
8fde939b02 ipvs: do not keep dest_dst if dev is going down
There is race between the netdev notifier ip_vs_dst_event()
and the code that caches dst with dev that is going down.
As the FIB can be notified for the closed device after our
handler finishes, it is possible valid route to be returned
and cached resuling in a leaked dev reference until the dest
is not removed.

To prevent new dest_dst to be attached to dest just after the
handler dropped the old one, add a netif_running() check
to make sure the notifier handler is not currently running
for device that is closing.

Fixes: 7a4f0761fc ("IPVS: init and cleanup restructuring")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Florian Westphal <fw@strlen.de>
2026-02-17 15:04:20 +01:00
Julian Anastasov
05cfe9863e ipvs: skip ipv6 extension headers for csum checks
Protocol checksum validation fails for IPv6 if there are extension
headers before the protocol header. iph->len already contains its
offset, so use it to fix the problem.

Fixes: 2906f66a56 ("ipvs: SCTP Trasport Loadbalancing Support")
Fixes: 0bbdd42b7e ("IPVS: Extend protocol DNAT/SNAT and state handlers")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Florian Westphal <fw@strlen.de>
2026-02-17 15:04:20 +01:00
Phil Sutter
4edd4ba71c include: uapi: netfilter_bridge.h: Cover for musl libc
Musl defines its own struct ethhdr and thus defines __UAPI_DEF_ETHHDR to
zero. To avoid struct redefinition errors, user space is therefore
supposed to include netinet/if_ether.h before (or instead of)
linux/if_ether.h. To relieve them from this burden, include the libc
header here if not building for kernel space.

Reported-by: Alyssa Ross <hi@alyssa.is>
Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Florian Westphal <fw@strlen.de>
2026-02-17 15:04:20 +01:00
Florian Westphal
a6d28eb8ef netfilter: nf_conntrack_h323: don't pass uninitialised l3num value
Mihail Milev reports: Error: UNINIT (CWE-457):
 net/netfilter/nf_conntrack_h323_main.c:1189:2: var_decl:
	Declaring variable "tuple" without initializer.
 net/netfilter/nf_conntrack_h323_main.c:1197:2:
	uninit_use_in_call: Using uninitialized value "tuple.src.l3num" when calling "__nf_ct_expect_find".
 net/netfilter/nf_conntrack_expect.c:142:2:
	read_value: Reading value "tuple->src.l3num" when calling "nf_ct_expect_dst_hash".

  1195|   	tuple.dst.protonum = IPPROTO_TCP;
  1196|
  1197|-> 	exp = __nf_ct_expect_find(net, nf_ct_zone(ct), &tuple);
  1198|   	if (exp && exp->master == ct)
  1199|   		return exp;

Switch this to a C99 initialiser and set the l3num value.

Fixes: f587de0e2f ("[NETFILTER]: nf_conntrack/nf_nat: add H.323 helper port")
Signed-off-by: Florian Westphal <fw@strlen.de>
2026-02-17 15:04:20 +01:00
Brian Witte
7f261bb906 netfilter: nf_tables: revert commit_mutex usage in reset path
It causes circular lock dependency between commit_mutex, nfnl_subsys_ipset
and nlk_cb_mutex when nft reset, ipset list, and iptables-nft with '-m set'
rule run at the same time.

Previous patches made it safe to run individual reset handlers concurrently
so commit_mutex is no longer required to prevent this.

Fixes: bd662c4218 ("netfilter: nf_tables: Add locking for NFT_MSG_GETOBJ_RESET requests")
Fixes: 3d483faa66 ("netfilter: nf_tables: Add locking for NFT_MSG_GETSETELEM_RESET requests")
Fixes: 3cb03edb4d ("netfilter: nf_tables: Add locking for NFT_MSG_GETRULE_RESET requests")
Link: https://lore.kernel.org/all/aUh_3mVRV8OrGsVo@strlen.de/
Reported-by: <syzbot+ff16b505ec9152e5f448@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=ff16b505ec9152e5f448
Signed-off-by: Brian Witte <brianwitte@mailfence.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
2026-02-17 15:04:20 +01:00
Brian Witte
30c4d7fb59 netfilter: nft_quota: use atomic64_xchg for reset
Use atomic64_xchg() to atomically read and zero the consumed value
on reset, which is simpler than the previous read+sub pattern and
doesn't require lock serialization.

Fixes: bd662c4218 ("netfilter: nf_tables: Add locking for NFT_MSG_GETOBJ_RESET requests")
Fixes: 3d483faa66 ("netfilter: nf_tables: Add locking for NFT_MSG_GETSETELEM_RESET requests")
Fixes: 3cb03edb4d ("netfilter: nf_tables: Add locking for NFT_MSG_GETRULE_RESET requests")
Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Brian Witte <brianwitte@mailfence.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
2026-02-17 15:04:20 +01:00
Brian Witte
779c60a519 netfilter: nft_counter: serialize reset with spinlock
Add a global static spinlock to serialize counter fetch+reset
operations, preventing concurrent dump-and-reset from underrunning
values.

The lock is taken before fetching the total so that two parallel
resets cannot both read the same counter values and then both
subtract them.

A global lock is used for simplicity since resets are infrequent.
If this becomes a bottleneck, it can be replaced with a per-net
lock later.

Fixes: bd662c4218 ("netfilter: nf_tables: Add locking for NFT_MSG_GETOBJ_RESET requests")
Fixes: 3d483faa66 ("netfilter: nf_tables: Add locking for NFT_MSG_GETSETELEM_RESET requests")
Fixes: 3cb03edb4d ("netfilter: nf_tables: Add locking for NFT_MSG_GETRULE_RESET requests")
Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Brian Witte <brianwitte@mailfence.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
2026-02-17 15:04:20 +01:00
Sun Jian
07919126ec netfilter: annotate NAT helper hook pointers with __rcu
The NAT helper hook pointers are updated and dereferenced under RCU rules,
but lack the proper __rcu annotation.

This makes sparse report address space mismatches when the hooks are used
with rcu_dereference().

Add the missing __rcu annotations to the global hook pointer declarations
and definitions in Amanda, FTP, IRC, SNMP and TFTP.

No functional change intended.

Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sun Jian <sun.jian.kdev@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
2026-02-17 15:04:20 +01:00
Niranjan H Y
0d68ad088e
ASoC: tas2783A: add explicit port prepare handling
TAS2783a required port prepare bits to be set during playback
even when it is using simplified CP_SM.

 Normally, SoundWire core handles prepare sequencing automatically
depending on the type of the device available. For simplified CP_SM
there is no need to set the prepare bits. However, due to a hardware
limitation in TAS2783A, the port must still be explicitly prepared and
de-prepared by the driver to ensure reliable playback.

 Add a custom .port_prep() callback to program DPN_PREPARECTRL during
PRE_PREP and PRE_DEPREP operations.

Signed-off-by: Niranjan H Y <niranjan.hy@ti.com>
Link: https://patch.msgid.link/20260214104710.632-1-niranjan.hy@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-02-17 13:17:04 +00:00
Claudiu Beznea
82e3265487
ASoC: renesas: rz-ssi: Fix playback and capture
In the current codebase the rz_ssi_stream_get() is called at the beginning
of rz_ssi_dai_trigger() before rz_ssi_stream_init() is called.
Since rz_ssi_stream_init() sets the ssi->{playback, capture}->substream,
relying on it in rz_ssi_stream_get() is incorrect. Fix this by checking
substream->stream instead as the original code did.

Fixes: 53dfb2ad6f ("ASoC: renesas: rz-ssi: Simplify the logic in rz_ssi_stream_is_play()")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://patch.msgid.link/20260213172434.3801015-1-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-02-17 13:17:03 +00:00
Paolo Abeni
77c5e3fdd2 Merge branch 'selftests-forwarding-fix-br_netfilter-related-test-failures'
Aleksei Oladko says:

====================
selftests: forwarding: fix br_netfilter related test failures

This patch series fixes kselftests that fail when the br_nefilter
module is loaded. The failures occur because the tests generate
packets that are either modified or encapsulated, but their IP
headers are not fully correct for sanity checks performed by
be_netfilter.

Signed-off-by: Aleksei Oladko <aleksey.oladko@virtuozzo.com>
====================

Link: https://patch.msgid.link/20260213131907.43351-1-aleksey.oladko@virtuozzo.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-17 13:34:41 +01:00
Aleksei Oladko
a8c198d16c selftests: forwarding: fix pedit tests failure with br_netfilter enabled
The tests use the tc pedit action to modify the IPv4 source address
("pedit ex munge ip src set"), but the IP header checksum is not
recalculated after the modification. As a result, the modified packet
fails sanity checks in br_netfilter after bridging and is dropped,
which causes the test to fail.

Fix this by ensuring net.bridge.bridge-nf-call-iptables is set to 0
during the test execution. This prevents the bridge from passing
L2 traffic to netfilter, bypassing the checksum validation that
causes the test failure.

Fixes: 92ad382894 ("selftests: forwarding: Add a test for pedit munge SIP and DIP")
Fixes: 226657ba23 ("selftests: forwarding: Add a forwarding test for pedit munge dsfield")
Signed-off-by: Aleksei Oladko <aleksey.oladko@virtuozzo.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260213131907.43351-4-aleksey.oladko@virtuozzo.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-17 13:34:18 +01:00
Aleksei Oladko
ce9f6aec0f selftests: forwarding: vxlan_bridge_1d_ipv6: fix test failure with br_netfilter enabled
The test generates VXLAN traffic using mausezahn, where the encapsulated
inner IPv6 packet has an incorrect payload length set in the IPv6 header.
After VXLAN decapsulation, such packets do not pass sanity checks in
br_netfilter and are dropped, which causes the test to fail.

Fix this by setting the correct IPv6 payload length for the encapsulated
packet generated by mausezahn, so that the packet is accepted
by br_netfilter.

tools/testing/selftests/net/forwarding/vxlan_bridge_1d_ipv6.sh
lines 698-706

              )"00:03:"$(           : Payload length
              )"3a:"$(              : Next header
              )"04:"$(              : Hop limit
              )"$saddr:"$(          : IP saddr
              )"$daddr:"$(          : IP daddr
              )"80:"$(              : ICMPv6.type
              )"00:"$(              : ICMPv6.code
              )"00:"$(              : ICMPv6.checksum
              )

Data after IPv6 header:
• 80: — 1 byte (ICMPv6 type)
• 00: — 1 byte (ICMPv6 code)
• 00: — 1 byte (ICMPv6 checksum, truncated)

Total: 3 bytes → 00:03 is correct. The old value 00:08 did not match
the actual payload size.

Fixes: b07e9957f2 ("selftests: forwarding: Add VxLAN tests with a VLAN-unaware bridge for IPv6")
Signed-off-by: Aleksei Oladko <aleksey.oladko@virtuozzo.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260213131907.43351-3-aleksey.oladko@virtuozzo.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-17 13:34:11 +01:00
Aleksei Oladko
02cb2e6bac selftests: forwarding: vxlan_bridge_1d: fix test failure with br_netfilter enabled
The test generates VXLAN traffic using mausezahn, where the encapsulated
inner IPv4 packet contains a zero IP header checksum. After VXLAN
decapsulation, such packets do not pass sanity checks in br_netfilter
and are dropped, which causes the test to fail.

Fix this by calculating and setting a valid IPv4 header checksum for the
encapsulated packet generated by mausezahn, so that the packet is accepted
by br_netfilter. Fixed by using the payload_template_calc_checksum() /
payload_template_expand_checksum() helpers that are only available
in v6.3 and newer kernels.

Fixes: a0b61f3d8e ("selftests: forwarding: vxlan_bridge_1d: Add an ECN decap test")
Signed-off-by: Aleksei Oladko <aleksey.oladko@virtuozzo.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260213131907.43351-2-aleksey.oladko@virtuozzo.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-17 13:34:11 +01:00
Erik Sanjaya
91062e119b ALSA: hda/realtek: Fix headset mic on ASUS Zenbook 14 UX3405MA
The ASUS Zenbook 14 UX3405MA uses an ALC294 codec with CS35L41
amplifiers over SPI. The existing quirk for this model only configured
the amplifiers, leaving the headset microphone on the combo jack
non-functional.

Introduce a new fixup that configures pin 0x19 as headset mic input
and chains to ALC245_FIXUP_CS35L41_SPI_2 to preserve speaker
functionality.

Similar to the fix done for the UM3406HA in commit 018f659753
("ALSA: hda/realtek: Fix headset mic on ASUS Zenbook 14").

Signed-off-by: Erik Sanjaya <sirreidlos@gmail.com>
Link: https://patch.msgid.link/20260217102112.20651-1-sirreidlos@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2026-02-17 13:33:39 +01:00
Eric Dumazet
26f29b1491 net: fix backlog_unlock_irq_restore() vs CONFIG_PREEMPT_RT
CONFIG_PREEMPT_RT is special, make this clear in backlog_lock_irq_save()
and backlog_unlock_irq_restore().

The issue shows up with CONFIG_DEBUG_IRQFLAGS=y

raw_local_irq_restore() called with IRQs enabled
 WARNING: kernel/locking/irqflag-debug.c:10 at warn_bogus_irq_restore+0xc/0x20 kernel/locking/irqflag-debug.c:10, CPU#1: aoe_tx0/1321
Modules linked in:
CPU: 1 UID: 0 PID: 1321 Comm: aoe_tx0 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
 RIP: 0010:warn_bogus_irq_restore+0xc/0x20 kernel/locking/irqflag-debug.c:10
Call Trace:
 <TASK>
  backlog_unlock_irq_restore net/core/dev.c:253 [inline]
  enqueue_to_backlog+0x525/0xcf0 net/core/dev.c:5347
  netif_rx_internal+0x120/0x550 net/core/dev.c:5659
  __netif_rx+0xa9/0x110 net/core/dev.c:5679
  loopback_xmit+0x43a/0x660 drivers/net/loopback.c:90
  __netdev_start_xmit include/linux/netdevice.h:5275 [inline]
  netdev_start_xmit include/linux/netdevice.h:5284 [inline]
  xmit_one net/core/dev.c:3864 [inline]
  dev_hard_start_xmit+0x2df/0x830 net/core/dev.c:3880
  __dev_queue_xmit+0x16f4/0x3990 net/core/dev.c:4829
  dev_queue_xmit include/linux/netdevice.h:3384 [inline]

Fixes: 27a01c1969 ("net: fully inline backlog_unlock_irq_restore()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260213120427.2914544-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-17 13:28:10 +01:00
Christian Brauner
8656686598
Merge patch series "Avoid filesystem references to writeback internals"
Kundan Kumar <kundan.kumar@samsung.com> says:

The series introduces writeback helper APIs and converts f2fs, gfs2
and nfs to stop accessing writeback internals directly.

As suggested by Christoph [1], filesystem code that directly accesses
writeback internals is split out:
[1] https://lore.kernel.org/all/20251015072912.GA11294@lst.de/

* patches from https://patch.msgid.link/20260213054634.79785-1-kundan.kumar@samsung.com:
  nfs: stop using writeback internals for WB_WRITEBACK accounting
  gfs2: stop using writeback internals for dirty_exceeded check
  f2fs: stop using writeback internals for dirty_exceeded checks
  writeback: prep helpers for dirty-limit and writeback accounting

Link: https://patch.msgid.link/20260213054634.79785-1-kundan.kumar@samsung.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-02-17 13:25:19 +01:00
Kundan Kumar
fd15b9c6ec
nfs: stop using writeback internals for WB_WRITEBACK accounting
Convert NFS WB_WRITEBACK accounting to writeback helper, eliminating
direct access to writeback.

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kundan Kumar <kundan.kumar@samsung.com>
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Link: https://patch.msgid.link/20260213054634.79785-5-kundan.kumar@samsung.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-02-17 13:25:14 +01:00
Kundan Kumar
8cab8dc0e1
gfs2: stop using writeback internals for dirty_exceeded check
Convert gfs2 dirty_exceeded handling to use the writeback core helper
instead of accessing writeback directly.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kundan Kumar <kundan.kumar@samsung.com>
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Link: https://patch.msgid.link/20260213054634.79785-4-kundan.kumar@samsung.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-02-17 13:25:14 +01:00
Kundan Kumar
07043a6ebe
f2fs: stop using writeback internals for dirty_exceeded checks
Replace direct dereferences of dirty_exceeded with the core helper
bdi_wb_dirty_exceeded(), removing f2fs dependencies on writeback
internals.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kundan Kumar <kundan.kumar@samsung.com>
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Link: https://patch.msgid.link/20260213054634.79785-3-kundan.kumar@samsung.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-02-17 13:25:14 +01:00
Kundan Kumar
a235d3bcd2
writeback: prep helpers for dirty-limit and writeback accounting
Add helper APIs needed by filesystems to avoid poking into writeback
internals.

Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kundan Kumar <kundan.kumar@samsung.com>
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Link: https://patch.msgid.link/20260213054634.79785-2-kundan.kumar@samsung.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-02-17 13:25:13 +01:00
Arnd Bergmann
95162db020 drm/pagemap: pass pagemap_addr by reference
Passing a structure by value into a function is sometimes problematic,
for a number of reasons. Of of these is a warning from the 32-bit arm
compiler:

drivers/gpu/drm/drm_gpusvm.c: In function '__drm_gpusvm_unmap_pages':
drivers/gpu/drm/drm_gpusvm.c:1152:33: note: parameter passing for argument of type 'struct drm_pagemap_addr' changed in GCC 9.1
 1152 |                                 dpagemap->ops->device_unmap(dpagemap,
      |                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1153 |                                                             dev, *addr);
      |                                                             ~~~~~~~~~~~

This particular problem is harmless since we are not mixing compiler versions
inside of the compiler. However, passing this by reference avoids the warning
along with providing slightly better calling conventions as it avoids an
extra copy on the stack.

Fixes: 75af93b3f5 ("drm/pagemap, drm/xe: Support destination migration over interconnect")
Fixes: 2df55d9e66 ("drm/xe: Support pcie p2p dma as a fast interconnect")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patch.msgid.link/20260216134644.1025365-1-arnd@kernel.org
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
2026-02-17 13:10:52 +01:00
Arnd Bergmann
636fd32d40 printk: add CONFIG_PRINTK dependency for netconsole
The 'select PRINTK_EXECUTION_CTX' line now causes a harmless warning
when NETCONSOLE_DYNAMIC is enabled but PRINTK is not:

WARNING: unmet direct dependencies detected for PRINTK_EXECUTION_CTX
  Depends on [n]: PRINTK [=n]
  Selected by [y]:
  - NETCONSOLE_DYNAMIC [=y] && NETDEVICES [=y] && NET_CORE [=y] && NETCONSOLE [=y] && SYSFS [=y] && CONFIGFS_FS [=y] && (NETCONSOLE [=y]!=y [=y] || CONFIGFS_FS [=y]!=m [=m])

In that configuration, the netconsole driver is useless anyway, so
avoid this with an added dependency that prevents CONFIG_NETCONSOLE
to be enabled without CONFIG_PRINTK.

Fixes: 60325c27d3 ("printk: Add execution context (task name/CPU) to printk_info")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260213074431.1729627-1-arnd@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-17 13:04:20 +01:00
Paolo Abeni
9874b1ba46 Merge branch 'net-bridge-mcast-fix-mdb_n_entries-counting-warning'
Nikolay Aleksandrov says:

====================
net: bridge: mcast: fix mdb_n_entries counting warning

The first patch fixes a warning in the mdb_n_entries code which was
reported by syzbot, the second patch adds tests for different ways
which used to trigger said warning. For more information please check
the individual commit messages.
====================

Link: https://patch.msgid.link/20260213070031.1400003-1-nikolay@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-17 13:00:16 +01:00
Nikolay Aleksandrov
a8470953b4 selftests: forwarding: bridge_mdb_max: add tests for mdb_n_entries warning
Recently we were able to trigger a warning in the mdb_n_entries counting
code. Add tests that exercise different ways which used to trigger that
warning.

Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Link: https://patch.msgid.link/20260213070031.1400003-3-nikolay@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-17 13:00:14 +01:00
Nikolay Aleksandrov
8b769e311a net: bridge: mcast: always update mdb_n_entries for vlan contexts
syzbot triggered a warning[1] about the number of mdb entries in a context.
It turned out that there are multiple ways to trigger that warning today
(some got added during the years), the root cause of the problem is that
the increase is done conditionally, and over the years these different
conditions increased so there were new ways to trigger the warning, that is
to do a decrease which wasn't paired with a previous increase.

For example one way to trigger it is with flush:
 $ ip l add br0 up type bridge vlan_filtering 1 mcast_snooping 1
 $ ip l add dumdum up master br0 type dummy
 $ bridge mdb add dev br0 port dumdum grp 239.0.0.1 permanent vid 1
 $ ip link set dev br0 down
 $ ip link set dev br0 type bridge mcast_vlan_snooping 1
   ^^^^ this will enable snooping, but will not update mdb_n_entries
        because in __br_multicast_enable_port_ctx() we check !netif_running
 $ bridge mdb flush dev br0
   ^^^ this will trigger the warning because it will delete the pg which
       we added above, which will try to decrease mdb_n_entries

Fix the problem by removing the conditional increase and always keep the
count up-to-date while the vlan exists. In order to do that we have to
first initialize it on port-vlan context creation, and then always increase
or decrease the value regardless of mcast options. To keep the current
behaviour we have to enforce the mdb limit only if the context is port's or
if the port-vlan's mcast snooping is enabled.

[1]
 ------------[ cut here ]------------
 n == 0
 WARNING: net/bridge/br_multicast.c:718 at br_multicast_port_ngroups_dec_one net/bridge/br_multicast.c:718 [inline], CPU#0: syz.4.4607/22043
 WARNING: net/bridge/br_multicast.c:718 at br_multicast_port_ngroups_dec net/bridge/br_multicast.c:771 [inline], CPU#0: syz.4.4607/22043
 WARNING: net/bridge/br_multicast.c:718 at br_multicast_del_pg+0x1bbe/0x1e20 net/bridge/br_multicast.c:825, CPU#0: syz.4.4607/22043
 Modules linked in:
 CPU: 0 UID: 0 PID: 22043 Comm: syz.4.4607 Not tainted syzkaller #0 PREEMPT(full)
 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
 RIP: 0010:br_multicast_port_ngroups_dec_one net/bridge/br_multicast.c:718 [inline]
 RIP: 0010:br_multicast_port_ngroups_dec net/bridge/br_multicast.c:771 [inline]
 RIP: 0010:br_multicast_del_pg+0x1bbe/0x1e20 net/bridge/br_multicast.c:825
 Code: 41 5f 5d e9 04 7a 48 f7 e8 3f 73 5c f7 90 0f 0b 90 e9 cf fd ff ff e8 31 73 5c f7 90 0f 0b 90 e9 16 fd ff ff e8 23 73 5c f7 90 <0f> 0b 90 e9 60 fd ff ff e8 15 73 5c f7 eb 05 e8 0e 73 5c f7 48 8b
 RSP: 0018:ffffc9000c207220 EFLAGS: 00010293
 RAX: ffffffff8a68042d RBX: ffff88807c6f1800 RCX: ffff888066e90000
 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
 RBP: 0000000000000000 R08: ffff888066e90000 R09: 000000000000000c
 R10: 000000000000000c R11: 0000000000000000 R12: ffff8880303ef800
 R13: dffffc0000000000 R14: ffff888050eb11c4 R15: 1ffff1100a1d6238
 FS:  00007fa45921b6c0(0000) GS:ffff8881256f5000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 00007fa4591f9ff8 CR3: 0000000081df2000 CR4: 00000000003526f0
 Call Trace:
  <TASK>
  br_mdb_flush_pgs net/bridge/br_mdb.c:1525 [inline]
  br_mdb_flush net/bridge/br_mdb.c:1544 [inline]
  br_mdb_del_bulk+0x5e2/0xb20 net/bridge/br_mdb.c:1561
  rtnl_mdb_del+0x48a/0x640 net/core/rtnetlink.c:-1
  rtnetlink_rcv_msg+0x77e/0xbe0 net/core/rtnetlink.c:6967
  netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
  netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
  netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
  netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
  sock_sendmsg_nosec net/socket.c:727 [inline]
  __sock_sendmsg net/socket.c:742 [inline]
  ____sys_sendmsg+0xa68/0xad0 net/socket.c:2592
  ___sys_sendmsg+0x2a5/0x360 net/socket.c:2646
  __sys_sendmsg net/socket.c:2678 [inline]
  __do_sys_sendmsg net/socket.c:2683 [inline]
  __se_sys_sendmsg net/socket.c:2681 [inline]
  __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2681
  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
  do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
  entry_SYSCALL_64_after_hwframe+0x77/0x7f
 RIP: 0033:0x7fa45839aeb9
 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
 RSP: 002b:00007fa45921b028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
 RAX: ffffffffffffffda RBX: 00007fa458615fa0 RCX: 00007fa45839aeb9
 RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000000000000004
 RBP: 00007fa458408c1f R08: 0000000000000000 R09: 0000000000000000
 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
 R13: 00007fa458616038 R14: 00007fa458615fa0 R15: 00007fff0b59fae8
 </TASK>

Fixes: b57e8d870d ("net: bridge: Maintain number of MDB entries in net_bridge_mcast_port")
Reported-by: syzbot+d5d1b7343531d17bd3c5@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/aYrWbRp83MQR1ife@debil/T/#t
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Link: https://patch.msgid.link/20260213070031.1400003-2-nikolay@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-17 13:00:14 +01:00
Arnd Bergmann
e65ca16463 efi: export sysfb_primary_display for EDID
The sysfb_primary_display structure is now part of efi-init.c but
conditionally defined. One of the users is missing in the condition:

aarch64-linux-ld: drivers/video/fbdev/core/fbmon.o: in function `fb_firmware_edid':
fbmon.c:(.text.fb_firmware_edid+0x3c): undefined reference to `sysfb_primary_display'

Export it whenever CONFIG_FIRMWARE_EDID is set, so the fbdev core
code can use it.

Fixes: 4fcae63588 ("sysfb: Move edid_info into sysfb_primary_display")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202602111543.Do4nkY5l-lkp@intel.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2026-02-17 12:25:09 +01:00