Commit Graph

22222 Commits

Author SHA1 Message Date
Cheng-Yang Chou
5897ca15d2 selftests/sched_ext: Add non_scx_kfunc_deny test
Verify that the BPF verifier rejects a non-SCX struct_ops program
(tcp_congestion_ops) that attempts to call an SCX kfunc (scx_bpf_kick_cpu).
The test expects the load to fail with -EACCES from scx_kfunc_context_filter.

Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2026-04-20 07:57:29 -10:00
Linus Torvalds
d3d9443f8b Merge tag 'livepatching-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching
Pull livepatching updates from Petr Mladek:

 - Add two new selftests

* tag 'livepatching-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
  selftests/livepatch: add test for module function patching
  selftests: livepatch: test-ftrace: livepatch a traced function
2026-04-16 08:13:27 -07:00
Linus Torvalds
f0bf3eac92 Merge tag 'vfio-v7.1-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:

 - Update QAT vfio-pci variant driver for Gen 5, 420xx devices (Vijay
   Sundar Selvamani, Suman Kumar Chakraborty, Giovanni Cabiddu)

 - Fix vfio selftest MMIO DMA mapping selftest (Alex Mastro)

 - Conversions to const struct class in support of class_create()
   deprecation (Jori Koolstra)

 - Improve selftest compiler compatibility by avoiding initializer on
   variable-length array (Manish Honap)

 - Define new uAPI for drivers supporting migration to advise user-
   space of new initial data for reducing target startup latency.
   Implemented for mlx5 vfio-pci variant driver (Yishai Hadas)

 - Enable vfio selftests on aarch64, not just cross-compiles reporting
   arm64 (Ted Logan)

 - Update vfio selftest driver support to include additional DSA devices
   (Yi Lai)

 - Unconditionally include debugfs root pointer in vfio device struct,
   avoiding a build failure seen in hisi_acc variant driver without
   debugfs otherwise (Arnd Bergmann)

 - Add support for the s390 ISM (Internal Shared Memory) device via a
   new variant driver. The device is unique in the size of its BAR space
   (256TiB) and lack of mmap support (Julian Ruess)

 - Enforce that vfio-pci drivers implement a name in their ops structure
   for use in sequestering SR-IOV VFs (Alex Williamson)

 - Prune leftover group notifier code (Paolo Bonzini)

 - Fix Xe vfio-pci variant driver to avoid migration support as a
   dependency in the reset path and missing release call (Michał
   Winiarski)

* tag 'vfio-v7.1-rc1' of https://github.com/awilliam/linux-vfio: (23 commits)
  vfio/xe: Add a missing vfio_pci_core_release_dev()
  vfio/xe: Reorganize the init to decouple migration from reset
  vfio: remove dead notifier code
  vfio/pci: Require vfio_device_ops.name
  MAINTAINERS: add VFIO ISM PCI DRIVER section
  vfio/ism: Implement vfio_pci driver for ISM devices
  vfio/pci: Rename vfio_config_do_rw() to vfio_pci_config_rw_single() and export it
  vfio: unhide vdev->debug_root
  vfio/qat: add support for Intel QAT 420xx VFs
  vfio: selftests: Support DMR and GNR-D DSA devices
  vfio: selftests: Build tests on aarch64
  vfio/mlx5: Add REINIT support to VFIO_MIG_GET_PRECOPY_INFO
  vfio/mlx5: consider inflight SAVE during PRE_COPY
  net/mlx5: Add IFC bits for migration state
  vfio: Adapt drivers to use the core helper vfio_check_precopy_ioctl
  vfio: Add support for VFIO_DEVICE_FEATURE_MIG_PRECOPY_INFOv2
  vfio: Define uAPI for re-init initial bytes during the PRE_COPY phase
  vfio: selftests: Fix VLA initialisation in vfio_pci_irq_set()
  vfio: uapi: fix comment typo
  vfio: mdev: replace mtty_dev->vd_class with a const struct class
  ...
2026-04-16 08:01:16 -07:00
Petr Mladek
448c0f8cb7 Merge branch 'for-7.1/module-function-test' into for-linus 2026-04-16 10:33:43 +02:00
Linus Torvalds
5ed19574eb Merge tag 'ktest-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest
Pull ktest updates from Steven Rostedt:

 - Fix undef warning when WARNINGS_FILE is unset

   The check_buildlog() references WARNINGS_FILE even when it's not set.
   Perl triggers a warning in this case. Check if the WARNINGS_FILE is
   defined before checking if the file it represents exists.

 - Fix how LOG_FILE is resolved

   LOG_FILE is expanded immediately after the config file is parsed. If
   LOG_FILE depends on variables from the tests it will use stale values
   instead of using the test variables. Have LOG_FILE also resolve test
   variables.

 - Treat a undefined self reference variable as empty

   Variables can recursively include itself for appending. Currently, if
   the references itself and it is not defined, it leaves the variable
   in the define: "VAR = ${VAR} foo" keeps the ${VAR} around. Have it
   removed instead.

 - Fix clearing of variables per tests

   If a variable has a defined default, a test can not clear it by
   assigning the variable to empty. Fix this by clearing the variable
   for a test when the test config has that variable assigned to
   nothing.

 - Fix run_command() to catch stderr in the shell command parsing

   Switch to Perl list form open to use "sh -c" wrapper to run shell
   commands to have the log file catch shell parsing errors.

 - Fix console output during reboot cycle

   The POWER_CYCLE callback during reboot() can miss output from the
   next boot making ktest miss the boot string it was waiting for.

 - Add PRE_KTEST_DIE for PRE_KTEST failures

   If the command for PRE_KTEST fails, ktest does not fail (this was by
   design as this command was used to add patches that may or may not
   apply). Add PRE_KTEST_DIE value to force ktest to fail if PRE_KTEST
   fails.

 - Run POST_KTEST hooks on failure and cancellation

   PRE_KTEST always runs before a ktest test, have POST_KTEST always run
   after a test even if the test fails or is cancelled to do the
   teardown of PRE_KTEST.

 - Add a --dry-run mode

   Add --dry-run to parse the config, print the results and exit without
   running any of the tests.

 - Store failures from the dodie() path as well

   The STORE_FAILURES saves the logs on failure, but there's failure
   paths that miss storing. Perform STORE_FAILURES in dodie() to capture
   these failures too.

* tag 'ktest-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
  ktest: Store failure logs also in fatal paths
  ktest: Add a --dry-run mode
  ktest: Run POST_KTEST hooks on failure and cancellation
  ktest: Add PRE_KTEST_DIE for PRE_KTEST failures
  ktest: Stop dropping console output during power-cycle reboot
  ktest: Run commands through list-form shell open
  ktest: Honor empty per-test option overrides
  ktest: Treat undefined self-reference as empty
  ktest: Resolve LOG_FILE in test option context
  ktest: Avoid undef warning when WARNINGS_FILE is unset
2026-04-15 17:11:22 -07:00
Linus Torvalds
e4bf304f00 Merge tag 'trace-ringbuffer-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull ring-buffer updates from Steven Rostedt:

 - Add remote buffers for pKVM

   pKVM has a hypervisor component that is used to protect the guest
   from the host kernel. This hypervisor is a black box to the kernel as
   the kernel is to user space. The remote buffers are used to have a
   memory mapping between the hypervisor and the kernel where kernel may
   send commands to enable tracing within the hypervisor. Then the
   kernel will read this memory mapping just like user space can read
   the memory mapped ring buffer of the kernel tracing system.

   Since the hypervisor only has a single context, it doesn't need to
   worry about races between normal context, interrupt context and NMIs
   like the kernel does. The ring buffer it uses doesn't need to be as
   complex. The remote buffers are a simple version of the ring buffer
   that works in a single context. They are still per-CPU and use sub
   buffers. The data layout is the same as the kernel's ring buffer to
   share the same parsing.

   Currently, only ARM64 implements pKVM, but there's work to implement
   it also in x86. The remote buffer code is separated out from the ARM
   implementation so that it can be used in the future by x86.

   The ARM64 updates for pKVM is in the ARM/KVM tree and it merged in
   the remote buffers of this tree.

 - Make the backup instance non reusable

   The backup instance is a copy of the persistent ring buffer so that
   the persistent ring buffer could start recording again without using
   the data from the previous boot. The backup isn't for normal tracing.
   It is made read-only, and after it is consumed, it is automatically
   removed.

 - Have backup copy persistent instance before it starts recording

   To allow the persistent ring buffer to start recording from the
   kernel command line commands, move the copy of the backup instance to
   before the the command line options start recording.

 - Report header_page overwrite field as "char" and not "int'

   The rust parser of the header_page file was triggering a warning when
   it defined the overwrite variable as "int" but it was only a single
   byte in size.

 - Fix memory barriers for the trace_buffer CPU mask

   When a CPU comes online, the bit is set to allow readers to know that
   the CPU buffer is allocated. The bit is set after the allocation is
   done, and a smp_wmb() is performed after the allocation and before
   the setting of the bit. But instead of adding a smp_rmb() to all
   readers, since once a buffer is created for a CPU it is not deleted
   if that CPU goes offline, so this allocation is almost always done at
   boot up before any readers exist.

   If for the unlikely case where a CPU comes online for the first time
   after the system boot has finished, send an IPI to all CPUs to force
   the smp_rmb() for each CPU.

 - Show clock function being used in debugging ring buffer data

   When the ring buffer checks are enabled and the ring buffer detects
   an inconsistency in the times of the invents, print out the clock
   being used when the error occurred. There was a very hard to hit bug
   that would happen every so often and it ended up being only triggered
   when the jiffies clock was being used. If the bug showed the clock
   being used, it would have been much easier to find the problem (which
   was an internal function was being traced which caused the clock
   accounting to go off).

* tag 'trace-ringbuffer-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (26 commits)
  ring-buffer: Prevent off-by-one array access in ring_buffer_desc_page()
  ring-buffer: Report header_page overwrite as char
  tracing: Allow backup to save persistent ring buffer before it starts
  tracing/Documentation: Add a section about backup instance
  tracing: Remove the backup instance automatically after read
  tracing: Make the backup instance non-reusable
  ring-buffer: Enforce read ordering of trace_buffer cpumask and buffers
  ring-buffer: Show what clock function is used on timestamp errors
  tracing: Check for undefined symbols in simple_ring_buffer
  tracing: load/unload page callbacks for simple_ring_buffer
  Documentation: tracing: Add tracing remotes
  tracing: selftests: Add trace remote tests
  tracing: Add a trace remote module for testing
  tracing: Introduce simple_ring_buffer
  ring-buffer: Export buffer_data_page and macros
  tracing: Add helpers to create trace remote events
  tracing: Add events/ root files to trace remotes
  tracing: Add events to trace remotes
  tracing: Add init callback to trace remotes
  tracing: Add non-consuming read to trace remotes
  ...
2026-04-15 15:59:46 -07:00
Linus Torvalds
f1d26d72f0 Merge tag 'iommu-updates-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu updates from Joerg Roedel:
 "Core:

   - Support for RISC-V IO-page-table format in generic iommupt code

  ARM-SMMU Updates:

   - Introduction of an "invalidation array" for SMMUv3, which enables
     future scalability work and optimisations for devices with a large
     number of SMMUv3 instances

   - Update the conditions under which the SMMUv3 driver works around
     hardware errata for invalidation on MMU-700 implementations

   - Fix broken command filtering for the host view of NVIDIA's "cmdqv"
     SMMUv3 extension

   - MMU-500 device-tree binding additions for Qualcomm Eliza & Hawi
     SoCs

  Intel VT-d:

   - Support for dirty tracking on domains attached to PASID

   - Removal of unnecessary read*()/write*() wrappers

   - Improvements to the invalidation paths

  AMD Vi:

   - Race-condition fixed in debugfs code

   - Make log buffer allocation NUMA aware

  RISC-V:

   - IO-TLB flushing improvements

   - Minor fixes"

* tag 'iommu-updates-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (48 commits)
  iommu/vt-d: Restore IOMMU_CAP_CACHE_COHERENCY
  dt-bindings: arm-smmu: qcom: Add compatible for Hawi SoC
  iommu/amd: Invalidate IRT cache for DMA aliases
  iommu/riscv: Remove overflows on the invalidation path
  iommu/amd: Fix clone_alias() to use the original device's devid
  iommu/vt-d: Remove the remaining pages along the invalidation path
  iommu/vt-d: Pass size_order to qi_desc_piotlb() not npages
  iommu/vt-d: Split piotlb invalidation into range and all
  iommu/vt-d: Remove dmar_writel() and dmar_writeq()
  iommu/vt-d: Remove dmar_readl() and dmar_readq()
  iommufd/selftest: Test dirty tracking on PASID
  iommu/vt-d: Support dirty tracking on PASID
  iommu/vt-d: Rename device_set_dirty_tracking() and pass dmar_domain pointer
  iommu/vt-d: Block PASID attachment to nested domain with dirty tracking
  iommu/dma: Always allow DMA-FQ when iommupt provides the iommu_domain
  iommu/riscv: Fix signedness bug
  iommu/amd: Fix illegal cap/mmio access in IOMMU debugfs
  iommu/amd: Fix illegal device-id access in IOMMU debugfs
  iommu/tegra241-cmdqv: Update uAPI to clarify HYP_OWN requirement
  iommu/tegra241-cmdqv: Set supports_cmd op in tegra241_vcmdq_hw_init()
  ...
2026-04-15 15:05:51 -07:00
Linus Torvalds
40286d6379 Merge tag 'pci-v7.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
 "Enumeration:

   - Allow TLP Processing Hints to be enabled for RCiEPs (George Abraham
     P)

   - Enable AtomicOps only if we know the Root Port supports them (Gerd
     Bayer)

   - Don't enable AtomicOps for RCiEPs since none of them need Atomic
     Ops and we can't tell whether the Root Complex would support them
     (Gerd Bayer)

   - Leave Precision Time Measurement disabled until a driver enables it
     to avoid PCIe errors (Mika Westerberg)

   - Make pci_set_vga_state() fail if bridge doesn't support VGA
     routing, i.e., PCI_BRIDGE_CTL_VGA is not writable, and return
     errors to vga_get() callers including userspace via
     /dev/vga_arbiter (Simon Richter)

   - Validate max-link-speed from DT in j721e, brcmstb, mediatek-gen3,
     rzg3s drivers (where the actual controller constraints are known),
     and remove validation from the generic OF DT accessor (Hans Zhang)

   - Remove pc110pad driver (no longer useful after 486 CPU support
     removed) and no_pci_devices() (pc110pad was the last user) (Dmitry
     Torokhov, Heiner Kallweit)

  Resource management:

   - Prevent assigning space to unimplemented bridge windows; previously
     we mistakenly assumed prefetchable window existed and assigned
     space and put a BAR there (Ahmed Naseef)

   - Avoid shrinking bridge windows to fit in the initial Root Port
     window; fixes one problem with devices with large BARs connected
     via switches, e.g., Thunderbolt (Ilpo Järvinen)

   - Pass full extent of empty space, not just the aligned space, to
     resource_alignf callback so free space before the requested
     alignment can be used (Ilpo Järvinen)

   - Place small resources before larger ones for better utilization of
     address space (Ilpo Järvinen)

   - Fix alignment calculation for resource size larger than align,
     e.g., bridge windows larger than the 1MB required alignment (Ilpo
     Järvinen)

  Reset:

   - Update slot handling so all ARI functions are treated as being in
     the same slot. They're all reset by Secondary Bus Reset, but
     previously drivers of ARI functions that appeared to be on a
     non-zero device weren't notified and fatal hardware errors could
     result (Keith Busch)

   - Make sysfs reset_subordinate hotplug safe to avoid spurious hotplug
     events (Keith Busch)

   - Hide Secondary Bus Reset ('bus') from sysfs reset_methods if masked
     by CXL because it has no effect (Vidya Sagar)

   - Avoid FLR for AMD NPU device, where it causes the device to hang
     (Lizhi Hou)

  Error handling:

   - Clear only error bits in PCIe Device Status to avoid accidentally
     clearing Emergency Power Reduction Detected (Shuai Xue)

   - Check for AER errors even in devices without drivers (Lukas Wunner)

   - Initialize ratelimit info so DPC and EDR paths log AER error
     information (Kuppuswamy Sathyanarayanan)

  Power control:

   - Add UPD720201/UPD720202 USB 3.0 xHCI Host Controller .compatible so
     generic pwrctrl driver can control it (Neil Armstrong)

  Hotplug:

   - Set LED_HW_PLUGGABLE for NPEM hotplug-capable ports so LED core
     doesn't complain when setting brightness fails because the endpoint
     is gone (Richard Cheng)

  Peer-to-peer DMA:

   - Allow wildcards in list of host bridges that support peer-to-peer
     DMA between hierarchy domains and add all Google SoCs (Jacob
     Moroni)

  Endpoint framework:

   - Advertise dynamic inbound mapping support in pci-epf-test and
     update host pci_endpoint_test to skip doorbell testing if not
     advertised by endpoint (Koichiro Den)

   - Return 0, not remaining timeout, when MHI eDMA ops complete so
     mhi_ep_ring_add_element() doesn't interpret non-zero as failure
     (Daniel Hodges)

   - Remove vntb and ntb duplicate resource teardown that leads to oops
     when .allow_link() fails or .drop_link() is called (Koichiro Den)

   - Disable vntb delayed work before clearing BAR mappings and
     doorbells to avoid oops caused by doing the work after resources
     have been torn down (Koichiro Den)

   - Add a way to describe reserved subregions within BARs, e.g.,
     platform-owned fixed register windows, and use it for the RK3588
     BAR4 DMA ctrl window (Koichiro Den)

   - Add BAR_DISABLED for BARs that will never be available to an EPF
     driver, and change some BAR_RESERVED annotations to BAR_DISABLED
     (Niklas Cassel)

   - Add NTB .get_dma_dev() callback for cases where DMA API requires a
     different device, e.g., vNTB devices (Koichiro Den)

   - Add reserved region types for MSI-X Table and PBA so Endpoint
     controllers can them as describe hardware-owned regions in a
     BAR_RESERVED BAR (Manikanta Maddireddy)

   - Make Tegra194/234 BAR0 programmable and remove 1MB size limit
     (Manikanta Maddireddy)

   - Expose Tegra BAR2 (MSI-X) and BAR4 (DMA) as 64-bit BAR_RESERVED
     (Manikanta Maddireddy)

   - Add Tegra194 and Tegra234 device table entries to pci_endpoint_test
     (Manikanta Maddireddy)

   - Skip the BAR subrange selftest if there are not enough inbound
     window resources to run the test (Christian Bruel)

  New native PCIe controller drivers:

   - Add DT binding and driver for Andes QiLai SoC PCIe host controller
     (Randolph Lin)

   - Add DT binding and driver for ESWIN PCIe Root Complex (Senchuan
     Zhang)

  Baikal T-1 PCIe controller driver:

   - Remove driver since it never quite became usable (Andy Shevchenko)

  Cadence PCIe controller driver:

   - Implement byte/word config reads with dword (32-bit) reads because
     some Cadence controllers don't support sub-dword accesses (Aksh
     Garg)

  CIX Sky1 PCIe controller driver:

   - Add 'power-domains' to DT binding for SCMI power domain (Gary Yang)

  Freescale i.MX6 PCIe controller driver:

   - Add i.MX94 and i.MX943 to fsl,imx6q-pcie-ep DT binding (Richard
     Zhu)

   - Delay instead of polling for L2/L3 Ready after PME_Turn_off when
     suspending i.MX6SX because LTSSM registers are inaccessible
     (Richard Zhu)

   - Separate PERST# assertion (for resetting endpoints) from core reset
     (for resetting the RC itself) to prepare for new DTs with PERST#
     GPIO in per-Root Port nodes (Sherry Sun)

   - Retain Root Port MSI capability on i.MX7D, i.MX8MM, and i.MX8MQ so
     MSI from downstream devices will work (Richard Zhu)

   - Fix i.MX95 reference clock source selection when internal refclk is
     used (Franz Schnyder)

  Freescale Layerscape PCIe controller driver:

   - Allow building as a removable module (Sascha Hauer)

  MediaTek PCIe Gen3 controller driver:

   - Use dev_err_probe() to simplify error paths and make deferred probe
     messages visible in /sys/kernel/debug/devices_deferred (Chen-Yu
     Tsai)

   - Power off device if setup fails (Chen-Yu Tsai)

   - Integrate new pwrctrl API to enable power control for WiFi/BT
     adapters on mainboard or in PCIe or M.2 slots (Chen-Yu Tsai)

  NVIDIA Tegra194 PCIe controller driver:

   - Poll less aggressively and non-atomically for PME_TO_Ack during
     transition to L2 (Vidya Sagar)

   - Disable LTSSM after transition to Detect on surprise link down to
     stop toggling between Polling and Detect (Manikanta Maddireddy)

   - Don't force the device into the D0 state before L2 when suspending
     or shutting down the controller (Vidya Sagar)

   - Disable PERST# IRQ only in Endpoint mode because it's not
     registered in Root Port mode (Manikanta Maddireddy)

   - Handle 'nvidia,refclk-select' as optional (Vidya Sagar)

   - Disable direct speed change in Endpoint mode so link speed change
     is controlled by the host (Vidya Sagar)

   - Set LTR values before link up to avoid bogus LTR messages with 0
     latency (Vidya Sagar)

   - Allow system suspend when the Endpoint link is down (Vidya Sagar)

   - Use DWC IP core version, not Tegra custom values, to avoid DWC core
     version check warnings (Manikanta Maddireddy)

   - Apply ECRC workaround to devices based on DesignWare 5.00a as well
     as 4.90a (Manikanta Maddireddy)

   - Disable PM Substate L1.2 in Endpoint mode to work around Tegra234
     erratum (Vidya Sagar)

   - Delay post-PERST# cleanup until core is powered on to avoid CBB
     timeout (Manikanta Maddireddy)

   - Assert CLKREQ# so switches that forward it to their downstream side
     can bring up those links successfully (Vidya Sagar)

   - Calibrate pipe to UPHY for Endpoint mode to reset stale PLL state
     from any previous bad link state (Vidya Sagar)

   - Remove IRQF_ONESHOT flag from Endpoint interrupt registration so
     DMA driver and Endpoint controller driver can share the interrupt
     line (Vidya Sagar)

   - Enable DMA interrupt to support DMA in both Root Port and Endpoint
     modes (Vidya Sagar)

   - Enable hardware link retraining after link goes down in Endpoint
     mode (Vidya Sagar)

   - Add DT binding and driver support for core clock monitoring (Vidya
     Sagar)

  Qualcomm PCIe controller driver:

   - Advertise 'Hot-Plug Capable' and set 'No Command Completed Support'
     since Qcom Root Ports support hotplug events like DL_Up/Down and
     can accept writes to Slot Control without delays between writes
     (Krishna Chaitanya Chundru)

  Renesas R-Car PCIe controller driver:

   - Mark Endpoint BAR0 and BAR2 as Resizable (Koichiro Den)

   - Reduce EPC BAR alignment requirement to 4K (Koichiro Den)

  Renesas RZ/G3S PCIe controller driver:

   - Add RZ/G3E to DT binding and to driver (John Madieu)

   - Assert (not deassert) resets in probe error path (John Madieu)

   - Assert resets in suspend path in reverse order they were deasserted
     during probe (John Madieu)

   - Rework inbound window algorithm to prevent mapping more than
     intended region and enforce alignment on size, to prepare for
     RZ/G3E support (John Madieu)

  Rockchip DesignWare PCIe controller driver:

   - Add tracepoints for PCIe controller LTSSM transitions and link rate
     changes (Shawn Lin)

   - Trace LTSSM events collected by the dw-rockchip debug FIFO (Shawn
     Lin)

  SOPHGO PCIe controller driver:

   - Disable ASPM L0s and L1 on Sophgo 2042 PCIe Root Ports that
     advertise support for them (Yao Zi)

  Synopsys DesignWare PCIe controller driver:

   - Continue with system suspend even if an Endpoint doesn't respond
     with PME_TO_Ack message (Manivannan Sadhasivam)

   - Set Endpoint MSI-X Table Size in the correct function of a
     multi-function device when configuring MSI-X, not in Function 0
     (Aksh Garg)

   - Set Max Link Width and Max Link Speed for all functions of a
     multi-function device, not just Function 0 (Aksh Garg)

   - Expose PCIe event counters in groups 5-7 in debugfs (Hans Zhang)

  Miscellaneous:

   - Warn only once about invalid ACS kernel parameter format (Richard
     Cheng)

   - Suppress FW_BUG warning when writing sysfs 'numa_node' with the
     current value (Li RongQing)

   - Drop redundant 'depends on PCI' from Kconfig (Julian Braha)"

* tag 'pci-v7.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (165 commits)
  PCI/P2PDMA: Add Google SoCs to the P2P DMA host bridge list
  PCI/P2PDMA: Allow wildcard Device IDs in host bridge list
  PCI: sg2042: Avoid L0s and L1 on Sophgo 2042 PCIe Root Ports
  PCI: cadence: Add flags for disabling ASPM capability for broken Root Ports
  PCI: tegra194: Add core monitor clock support
  dt-bindings: PCI: tegra194: Add monitor clock support
  PCI: tegra194: Enable hardware hot reset mode in Endpoint mode
  PCI: tegra194: Enable DMA interrupt
  PCI: tegra194: Remove IRQF_ONESHOT flag during Endpoint interrupt registration
  PCI: tegra194: Calibrate pipe to UPHY for Endpoint mode
  PCI: tegra194: Assert CLKREQ# explicitly by default
  PCI: tegra194: Fix CBB timeout caused by DBI access before core power-on
  PCI: tegra194: Disable L1.2 capability of Tegra234 EP
  PCI: dwc: Apply ECRC workaround to DesignWare 5.00a as well
  PCI: tegra194: Use DWC IP core version
  PCI: tegra194: Free up Endpoint resources during remove()
  PCI: tegra194: Allow system suspend when the Endpoint link is not up
  PCI: tegra194: Set LTR message request before PCIe link up in Endpoint mode
  PCI: tegra194: Disable direct speed change for Endpoint mode
  PCI: tegra194: Use devm_gpiod_get_optional() to parse "nvidia,refclk-select"
  ...
2026-04-15 14:41:21 -07:00
Linus Torvalds
f82b61de0f Merge tag 'locking_futex_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex selftest updates from Borislav Petkov:

 - Correct the version guard for the futex_numa_mpol test to require
   libnuma 2.0.18 instead of 2.0.16, which is the version that actually
   introduced numa_set_mempolicy_home_node() used by the test

 - Allow the futex_numa_mpol selftest to build and run on systems
   without libnuma installed with affected test gracefully being skipped
   instead of failing to compile

 - Use the proper assertion macros so that individual sub-test failures
   are correctly propagated and the test suite reports failure when
   something goes wrong

* tag 'locking_futex_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  selftests/futex: Bump up libnuma version check
  selftests/futex: Conditionally include libnuma support
  selftests/futex: Fix incorrect result reporting of futex_requeue test item
2026-04-15 13:39:23 -07:00
Linus Torvalds
334fbe734e Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:

 - "maple_tree: Replace big node with maple copy" (Liam Howlett)

   Mainly prepararatory work for ongoing development but it does reduce
   stack usage and is an improvement.

 - "mm, swap: swap table phase III: remove swap_map" (Kairui Song)

   Offers memory savings by removing the static swap_map. It also yields
   some CPU savings and implements several cleanups.

 - "mm: memfd_luo: preserve file seals" (Pratyush Yadav)

   File seal preservation to LUO's memfd code

 - "mm: zswap: add per-memcg stat for incompressible pages" (Jiayuan
   Chen)

   Additional userspace stats reportng to zswap

 - "arch, mm: consolidate empty_zero_page" (Mike Rapoport)

   Some cleanups for our handling of ZERO_PAGE() and zero_pfn

 - "mm/kmemleak: Improve scan_should_stop() implementation" (Zhongqiu
   Han)

   A robustness improvement and some cleanups in the kmemleak code

 - "Improve khugepaged scan logic" (Vernon Yang)

   Improve khugepaged scan logic and reduce CPU consumption by
   prioritizing scanning tasks that access memory frequently

 - "Make KHO Stateless" (Jason Miu)

   Simplify Kexec Handover by transitioning KHO from an xarray-based
   metadata tracking system with serialization to a radix tree data
   structure that can be passed directly to the next kernel

 - "mm: vmscan: add PID and cgroup ID to vmscan tracepoints" (Thomas
   Ballasi and Steven Rostedt)

   Enhance vmscan's tracepointing

 - "mm: arch/shstk: Common shadow stack mapping helper and
   VM_NOHUGEPAGE" (Catalin Marinas)

   Cleanup for the shadow stack code: remove per-arch code in favour of
   a generic implementation

 - "Fix KASAN support for KHO restored vmalloc regions" (Pasha Tatashin)

   Fix a WARN() which can be emitted the KHO restores a vmalloc area

 - "mm: Remove stray references to pagevec" (Tal Zussman)

   Several cleanups, mainly udpating references to "struct pagevec",
   which became folio_batch three years ago

 - "mm: Eliminate fake head pages from vmemmap optimization" (Kiryl
   Shutsemau)

   Simplify the HugeTLB vmemmap optimization (HVO) by changing how tail
   pages encode their relationship to the head page

 - "mm/damon/core: improve DAMOS quota efficiency for core layer
   filters" (SeongJae Park)

   Improve two problematic behaviors of DAMOS that makes it less
   efficient when core layer filters are used

 - "mm/damon: strictly respect min_nr_regions" (SeongJae Park)

   Improve DAMON usability by extending the treatment of the
   min_nr_regions user-settable parameter

 - "mm/page_alloc: pcp locking cleanup" (Vlastimil Babka)

   The proper fix for a previously hotfixed SMP=n issue. Code
   simplifications and cleanups ensued

 - "mm: cleanups around unmapping / zapping" (David Hildenbrand)

   A bunch of cleanups around unmapping and zapping. Mostly
   simplifications, code movements, documentation and renaming of
   zapping functions

 - "support batched checking of the young flag for MGLRU" (Baolin Wang)

   Batched checking of the young flag for MGLRU. It's part cleanups; one
   benchmark shows large performance benefits for arm64

 - "memcg: obj stock and slab stat caching cleanups" (Johannes Weiner)

   memcg cleanup and robustness improvements

 - "Allow order zero pages in page reporting" (Yuvraj Sakshith)

   Enhance free page reporting - it is presently and undesirably order-0
   pages when reporting free memory.

 - "mm: vma flag tweaks" (Lorenzo Stoakes)

   Cleanup work following from the recent conversion of the VMA flags to
   a bitmap

 - "mm/damon: add optional debugging-purpose sanity checks" (SeongJae
   Park)

   Add some more developer-facing debug checks into DAMON core

 - "mm/damon: test and document power-of-2 min_region_sz requirement"
   (SeongJae Park)

   An additional DAMON kunit test and makes some adjustments to the
   addr_unit parameter handling

 - "mm/damon/core: make passed_sample_intervals comparisons
   overflow-safe" (SeongJae Park)

   Fix a hard-to-hit time overflow issue in DAMON core

 - "mm/damon: improve/fixup/update ratio calculation, test and
   documentation" (SeongJae Park)

   A batch of misc/minor improvements and fixups for DAMON

 - "mm: move vma_(kernel|mmu)_pagesize() out of hugetlb.c" (David
   Hildenbrand)

   Fix a possible issue with dax-device when CONFIG_HUGETLB=n. Some code
   movement was required.

 - "zram: recompression cleanups and tweaks" (Sergey Senozhatsky)

   A somewhat random mix of fixups, recompression cleanups and
   improvements in the zram code

 - "mm/damon: support multiple goal-based quota tuning algorithms"
   (SeongJae Park)

   Extend DAMOS quotas goal auto-tuning to support multiple tuning
   algorithms that users can select

 - "mm: thp: reduce unnecessary start_stop_khugepaged()" (Breno Leitao)

   Fix the khugpaged sysfs handling so we no longer spam the logs with
   reams of junk when starting/stopping khugepaged

 - "mm: improve map count checks" (Lorenzo Stoakes)

   Provide some cleanups and slight fixes in the mremap, mmap and vma
   code

 - "mm/damon: support addr_unit on default monitoring targets for
   modules" (SeongJae Park)

   Extend the use of DAMON core's addr_unit tunable

 - "mm: khugepaged cleanups and mTHP prerequisites" (Nico Pache)

   Cleanups to khugepaged and is a base for Nico's planned khugepaged
   mTHP support

 - "mm: memory hot(un)plug and SPARSEMEM cleanups" (David Hildenbrand)

   Code movement and cleanups in the memhotplug and sparsemem code

 - "mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup
   CONFIG_MIGRATION" (David Hildenbrand)

   Rationalize some memhotplug Kconfig support

 - "change young flag check functions to return bool" (Baolin Wang)

   Cleanups to change all young flag check functions to return bool

 - "mm/damon/sysfs: fix memory leak and NULL dereference issues" (Josh
   Law and SeongJae Park)

   Fix a few potential DAMON bugs

 - "mm/vma: convert vm_flags_t to vma_flags_t in vma code" (Lorenzo
   Stoakes)

   Convert a lot of the existing use of the legacy vm_flags_t data type
   to the new vma_flags_t type which replaces it. Mainly in the vma
   code.

 - "mm: expand mmap_prepare functionality and usage" (Lorenzo Stoakes)

   Expand the mmap_prepare functionality, which is intended to replace
   the deprecated f_op->mmap hook which has been the source of bugs and
   security issues for some time. Cleanups, documentation, extension of
   mmap_prepare into filesystem drivers

 - "mm/huge_memory: refactor zap_huge_pmd()" (Lorenzo Stoakes)

   Simplify and clean up zap_huge_pmd(). Additional cleanups around
   vm_normal_folio_pmd() and the softleaf functionality are performed.

* tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (369 commits)
  mm: fix deferred split queue races during migration
  mm/khugepaged: fix issue with tracking lock
  mm/huge_memory: add and use has_deposited_pgtable()
  mm/huge_memory: add and use normal_or_softleaf_folio_pmd()
  mm: add softleaf_is_valid_pmd_entry(), pmd_to_softleaf_folio()
  mm/huge_memory: separate out the folio part of zap_huge_pmd()
  mm/huge_memory: use mm instead of tlb->mm
  mm/huge_memory: remove unnecessary sanity checks
  mm/huge_memory: deduplicate zap deposited table call
  mm/huge_memory: remove unnecessary VM_BUG_ON_PAGE()
  mm/huge_memory: add a common exit path to zap_huge_pmd()
  mm/huge_memory: handle buggy PMD entry in zap_huge_pmd()
  mm/huge_memory: have zap_huge_pmd return a boolean, add kdoc
  mm/huge: avoid big else branch in zap_huge_pmd()
  mm/huge_memory: simplify vma_is_specal_huge()
  mm: on remap assert that input range within the proposed VMA
  mm: add mmap_action_map_kernel_pages[_full]()
  uio: replace deprecated mmap hook with mmap_prepare in uio_info
  drivers: hv: vmbus: replace deprecated mmap hook with mmap_prepare
  mm: allow handling of stacked mmap_prepare hooks in more drivers
  ...
2026-04-15 12:59:16 -07:00
Linus Torvalds
5bdb4078e1 Merge tag 'sched_ext-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext updates from Tejun Heo:

 - cgroup sub-scheduler groundwork

   Multiple BPF schedulers can be attached to cgroups and the dispatch
   path is made hierarchical. This involves substantial restructuring of
   the core dispatch, bypass, watchdog, and dump paths to be
   per-scheduler, along with new infrastructure for scheduler ownership
   enforcement, lifecycle management, and cgroup subtree iteration

   The enqueue path is not yet updated and will follow in a later cycle

 - scx_bpf_dsq_reenq() generalized to support any DSQ including remote
   local DSQs and user DSQs

   Built on top of this, SCX_ENQ_IMMED guarantees that tasks dispatched
   to local DSQs either run immediately or get reenqueued back through
   ops.enqueue(), giving schedulers tighter control over queueing
   latency

   Also useful for opportunistic CPU sharing across sub-schedulers

 - ops.dequeue() was only invoked when the core knew a task was in BPF
   data structures, missing scheduling property change events and
   skipping callbacks for non-local DSQ dispatches from ops.select_cpu()

   Fixed to guarantee exactly one ops.dequeue() call when a task leaves
   BPF scheduler custody

 - Kfunc access validation moved from runtime to BPF verifier time,
   removing runtime mask enforcement

 - Idle SMT sibling prioritization in the idle CPU selection path

 - Documentation, selftest, and tooling updates. Misc bug fixes and
   cleanups

* tag 'sched_ext-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: (134 commits)
  tools/sched_ext: Add explicit cast from void* in RESIZE_ARRAY()
  sched_ext: Make string params of __ENUM_set() const
  tools/sched_ext: Kick home CPU for stranded tasks in scx_qmap
  sched_ext: Drop spurious warning on kick during scheduler disable
  sched_ext: Warn on task-based SCX op recursion
  sched_ext: Rename scx_kf_allowed_on_arg_tasks() to scx_kf_arg_task_ok()
  sched_ext: Remove runtime kfunc mask enforcement
  sched_ext: Add verifier-time kfunc context filter
  sched_ext: Drop redundant rq-locked check from scx_bpf_task_cgroup()
  sched_ext: Decouple kfunc unlocked-context check from kf_mask
  sched_ext: Fix ops.cgroup_move() invocation kf_mask and rq tracking
  sched_ext: Track @p's rq lock across set_cpus_allowed_scx -> ops.set_cpumask
  sched_ext: Add select_cpu kfuncs to scx_kfunc_ids_unlocked
  sched_ext: Drop TRACING access to select_cpu kfuncs
  selftests/sched_ext: Fix wrong DSQ ID in peek_dsq error message
  sched_ext: Documentation: improve accuracy of task lifecycle pseudo-code
  selftests/sched_ext: Improve runner error reporting for invalid arguments
  sched_ext: Documentation: Fix scx_bpf_move_to_local kfunc name
  sched_ext: Documentation: Add ops.dequeue() to task lifecycle
  tools/sched_ext: Fix off-by-one in scx_sdt payload zeroing
  ...
2026-04-15 10:54:24 -07:00
Linus Torvalds
a8e7ef3cec Merge tag 'sound-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
 "Nothing too thrilling here, but we see lots of driver updates and bug
  fixes, including quirk additions and refactoring works, while there
  have been little changes in the core functionality. Here are some
  highlights:

  Core:
   - Add validation for the control API put callback
   - Fixes in compress-offload API timestamp handling
   - Continued ASoC core API cleanups

  ASoC:
   - Add support for bus keepers (for Apple devices in future)
   - Enhancements to the SDCA support, including retaskable jacks
   - Test improvements for Cirrus Logic drivers
   - Lots of fixes for the NXP, nVidia and Qualcomm
   - Support for AMD RPL DMIC, Cirrus Logic CS42L43 and CS47L47, nVidia
     machines with CPCAP and WM8962

  USB-audio:
   - Quirks for Huawei Headset, Focusrite Novation, MV-Silicon, Studio
     1824, Arturia AF16Rig, Hotone Audio, Feaulle Rainbow, PreSonus
     AudioBox, Moondrop Ju Jiu, Scarlett 18i20, etc
   - Extended mixer volume quirk handling
   - UAF and other fixes for us144mkii, 6fire and caiaq drivers

  HD-audio:
   - Add quirks or fixes for Acer, Lenovo, HP, ASUS machines
   - Fixes & cleanups of GPIO helper code

  Misc:
   - Add suspend/resume support for multiple legacy ISA and Apple
     drivers
   - Further regression fixes for ctxfi driver"

* tag 'sound-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (359 commits)
  ALSA: control: Validate buf_len before strnlen() in snd_ctl_elem_init_enum_names()
  ALSA: usb-audio: Fix missing error handling for get_min_max*()
  ALSA: hda/realtek - fixed speaker no sound update
  ALSA: hda/realtek: Add quirk for Acer PT316-51S headset mic
  ALSA: usb-audio: Exclude Scarlett 18i20 1st Gen from SKIP_IFACE_SETUP
  ALSA: hda/realtek: Add quirk for Legion S7 15IMH
  ALSA: hda/realtek: Add quirk for HP Spectre x360 14-ea
  ALSA: caiaq: take a reference on the USB device in create_card()
  ASoC: dt-bindings: rockchip: convert rk3399-gru-sound to DT Schema
  ALSA: sscape: Add suspend and resume support
  ALSA: sscape: Cache per-card resources for board reinitialization
  ALSA: usb-audio: Do not expose sticky mixers
  ALSA: usb-audio: Move volume control resolution check into a function
  ALSA: usb-audio: Add error checks against get_min_max*()
  ALSA: usb-audio: Add quirk for PreSonus AudioBox USB
  ALSA: interwave: guard PM-only restore helpers with CONFIG_PM
  ALSA: usb-audio: Evaluate packsize caps at the right place
  ALSA: sc6000: Restore board setup across suspend
  ALSA: sc6000: Keep the programmed board state in card-private data
  ALSA: 6fire: fix use-after-free on disconnect
  ...
2026-04-15 09:20:49 -07:00
Linus Torvalds
5c0f43e853 Merge tag 'kernel-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull pid_namespace updates from Christian Brauner:

 - pid_namespace: make init creation more flexible

   Annotate ->child_reaper accesses with {READ,WRITE}_ONCE() to protect
   the unlocked readers from cpu/compiler reordering, and enforce that
   pid 1 in a pid namespace is always the first allocated pid (the
   set_tid path already required this).

   On top of that, allow opening pid_for_children before the pid
   namespace init has been created. This lets one process create the pid
   namespace and a different process create the init via setns(), which
   makes clone3(set_tid) usable in all cases evenly and is particularly
   useful to CRIU when restoring nested containers.

   A new selftest covers both the basic create-pidns-then-init flow and
   the cross-process variant, and a MAINTAINERS entry for the pid
   namespace code is added.

 - unrelated signal cleanup: update outdated comment for the removed
   freezable_schedule()

* tag 'kernel-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  signal: update outdated comment for removed freezable_schedule()
  MAINTAINERS: add a pid namespace entry
  selftests: Add tests for creating pidns init via setns
  pid_namespace: allow opening pid_for_children before init was created
  pid: check init is created first after idr alloc
  pid_namespace: avoid optimization of accesses to ->child_reaper
2026-04-14 20:28:40 -07:00
Linus Torvalds
7c8a4671dc Merge tag 'vfs-7.1-rc1.mount.v2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs mount updates from Christian Brauner:

 - Add FSMOUNT_NAMESPACE flag to fsmount() that creates a new mount
   namespace with the newly created filesystem attached to a copy of the
   real rootfs. This returns a namespace file descriptor instead of an
   O_PATH mount fd, similar to how OPEN_TREE_NAMESPACE works for
   open_tree().

   This allows creating a new filesystem and immediately placing it in a
   new mount namespace in a single operation, which is useful for
   container runtimes and other namespace-based isolation mechanisms.

   This accompanies OPEN_TREE_NAMESPACE and avoids a needless detour via
   OPEN_TREE_NAMESPACE to get the same effect. Will be especially useful
   when you mount an actual filesystem to be used as the container
   rootfs.

 - Currently, creating a new mount namespace always copies the entire
   mount tree from the caller's namespace. For containers and sandboxes
   that intend to build their mount table from scratch this is wasteful:
   they inherit a potentially large mount tree only to immediately tear
   it down.

   This series adds support for creating a mount namespace that contains
   only a clone of the root mount, with none of the child mounts. Two
   new flags are introduced:

     - CLONE_EMPTY_MNTNS (0x400000000) for clone3(), using the 64-bit flag space
     - UNSHARE_EMPTY_MNTNS (0x00100000) for unshare()

   Both flags imply CLONE_NEWNS. The resulting namespace contains a
   single nullfs root mount with an immutable empty directory. The
   intended workflow is to then mount a real filesystem (e.g., tmpfs)
   over the root and build the mount table from there.

 - Allow MOVE_MOUNT_BENEATH to target the caller's rootfs, allowing to
   switch out the rootfs without pivot_root(2).

   The traditional approach to switching the rootfs involves
   pivot_root(2) or a chroot_fs_refs()-based mechanism that atomically
   updates fs->root for all tasks sharing the same fs_struct. This has
   consequences for fork(), unshare(CLONE_FS), and setns().

   This series instead decomposes root-switching into individually
   atomic, locally-scoped steps:

	fd_tree = open_tree(-EBADF, "/newroot", OPEN_TREE_CLONE | OPEN_TREE_CLOEXEC);
	fchdir(fd_tree);
	move_mount(fd_tree, "", AT_FDCWD, "/", MOVE_MOUNT_BENEATH | MOVE_MOUNT_F_EMPTY_PATH);
	chroot(".");
	umount2(".", MNT_DETACH);

   Since each step only modifies the caller's own state, the
   fork/unshare/setns races are eliminated by design.

   A key step to making this possible is to remove the locked mount
   restriction. Originally MOVE_MOUNT_BENEATH doesn't support mounting
   beneath a mount that is locked. The locked mount protects the
   underlying mount from being revealed. This is a core mechanism of
   unshare(CLONE_NEWUSER | CLONE_NEWNS). The mounts in the new mount
   namespace become locked. That effectively makes the new mount table
   useless as the caller cannot ever get rid of any of the mounts no
   matter how useless they are.

   We can lift this restriction though. We simply transfer the locked
   property from the top mount to the mount beneath. This works because
   what we care about is to protect the underlying mount aka the parent.
   The mount mounted between the parent and the top mount takes over the
   job of protecting the parent mount from the top mount mount. This
   leaves us free to remove the locked property from the top mount which
   can consequently be unmounted:

	unshare(CLONE_NEWUSER | CLONE_NEWNS)

   and we inherit a clone of procfs on /proc then currently we cannot
   unmount it as:

	umount -l /proc

   will fail with EINVAL because the procfs mount is locked.

   After this series we can now do:

	mount --beneath -t tmpfs tmpfs /proc
	umount -l /proc

   after which a tmpfs mount has been placed beneath the procfs mount.
   The tmpfs mount has become locked and the procfs mount has become
   unlocked.

   This means you can safely modify an inherited mount table after
   unprivileged namespace creation.

   Afterwards we simply make it possible to move a mount beneath the
   rootfs allowing to upgrade the rootfs.

   Removing the locked restriction makes this very useful for containers
   created with unshare(CLONE_NEWUSER | CLONE_NEWNS) to reshuffle an
   inherited mount table safely and MOVE_MOUNT_BENEATH makes it possible
   to switch out the rootfs instead of using the costly pivot_root(2).

* tag 'vfs-7.1-rc1.mount.v2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  selftests/namespaces: remove unused utils.h include from listns_efault_test
  selftests/fsmount_ns: add missing TARGETS and fix cap test
  selftests/empty_mntns: fix wrong CLONE_EMPTY_MNTNS hex value in comment
  selftests/empty_mntns: fix statmount_alloc() signature mismatch
  selftests/statmount: remove duplicate wait_for_pid()
  mount: always duplicate mount
  selftests/filesystems: add MOVE_MOUNT_BENEATH rootfs tests
  move_mount: allow MOVE_MOUNT_BENEATH on the rootfs
  move_mount: transfer MNT_LOCKED
  selftests/filesystems: add clone3 tests for empty mount namespaces
  selftests/filesystems: add tests for empty mount namespaces
  namespace: allow creating empty mount namespaces
  selftests: add FSMOUNT_NAMESPACE tests
  selftests/statmount: add statmount_alloc() helper
  tools: update mount.h header
  mount: add FSMOUNT_NAMESPACE
  mount: simplify __do_loopback()
  mount: start iterating from start of rbtree
2026-04-14 19:59:25 -07:00
Linus Torvalds
91a4855d6c Merge tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Support HW queue leasing, allowing containers to be granted access
     to HW queues for zero-copy operations and AF_XDP

   - Number of code moves to help the compiler with inlining. Avoid
     output arguments for returning drop reason where possible

   - Rework drop handling within qdiscs to include more metadata about
     the reason and dropping qdisc in the tracepoints

   - Remove the rtnl_lock use from IP Multicast Routing

   - Pack size information into the Rx Flow Steering table pointer
     itself. This allows making the table itself a flat array of u32s,
     thus making the table allocation size a power of two

   - Report TCP delayed ack timer information via socket diag

   - Add ip_local_port_step_width sysctl to allow distributing the
     randomly selected ports more evenly throughout the allowed space

   - Add support for per-route tunsrc in IPv6 segment routing

   - Start work of switching sockopt handling to iov_iter

   - Improve dynamic recvbuf sizing in MPTCP, limit burstiness and avoid
     buffer size drifting up

   - Support MSG_EOR in MPTCP

   - Add stp_mode attribute to the bridge driver for STP mode selection.
     This addresses concerns about call_usermodehelper() usage

   - Remove UDP-Lite support (as announced in 2023)

   - Remove support for building IPv6 as a module. Remove the now
     unnecessary function calling indirection

  Cross-tree stuff:

   - Move Michael MIC code from generic crypto into wireless, it's
     considered insecure but some WiFi networks still need it

  Netfilter:

   - Switch nft_fib_ipv6 module to no longer need temporary dst_entry
     object allocations by using fib6_lookup() + RCU.

     Florian W reports this gets us ~13% higher packet rate

   - Convert IPVS's global __ip_vs_mutex to per-net service_mutex and
     switch the service tables to be per-net. Convert some code that
     walks the service lists to use RCU instead of the service_mutex

   - Add more opinionated input validation to lower security exposure

   - Make IPVS hash tables to be per-netns and resizable

  Wireless:

   - Finished assoc frame encryption/EPPKE/802.1X-over-auth

   - Radar detection improvements

   - Add 6 GHz incumbent signal detection APIs

   - Multi-link support for FILS, probe response templates and client
     probing

   - New APIs and mac80211 support for NAN (Neighbor Aware Networking,
     aka Wi-Fi Aware) so less work must be in firmware

  Driver API:

   - Add numerical ID for devlink instances (to avoid having to create
     fake bus/device pairs just to have an ID). Support shared devlink
     instances which span multiple PFs

   - Add standard counters for reporting pause storm events (implement
     in mlx5 and fbnic)

   - Add configuration API for completion writeback buffering (implement
     in mana)

   - Support driver-initiated change of RSS context sizes

   - Support DPLL monitoring input frequency (implement in zl3073x)

   - Support per-port resources in devlink (implement in mlx5)

  Misc:

   - Expand the YAML spec for Netfilter

  Drivers

   - Software:
      - macvlan: support multicast rx for bridge ports with shared
        source MAC address
      - team: decouple receive and transmit enablement for IEEE 802.3ad
        LACP "independent control"

   - Ethernet high-speed NICs:
      - nVidia/Mellanox:
         - support high order pages in zero-copy mode (for payload
           coalescing)
         - support multiple packets in a page (for systems with 64kB
           pages)
      - Broadcom 25-400GE (bnxt):
         - implement XDP RSS hash metadata extraction
         - add software fallback for UDP GSO, lowering the IOMMU cost
      - Broadcom 800GE (bnge):
         - add link status and configuration handling
         - add various HW and SW statistics
      - Marvell/Cavium:
         - NPC HW block support for cn20k
      - Huawei (hinic3):
         - add mailbox / control queue
         - add rx VLAN offload
         - add driver info and link management

   - Ethernet NICs:
      - Marvell/Aquantia:
         - support reading SFP module info on some AQC100 cards
      - Realtek PCI (r8169):
         - add support for RTL8125cp
      - Realtek USB (r8152):
         - support for the RTL8157 5Gbit chip
         - add 2500baseT EEE status/configuration support

   - Ethernet NICs embedded and off-the-shelf IP:
      - Synopsys (stmmac):
         - cleanup and reorganize SerDes handling and PCS support
         - cleanup descriptor handling and per-platform data
         - cleanup and consolidate MDIO defines and handling
         - shrink driver memory use for internal structures
         - improve Tx IRQ coalescing
         - improve TCP segmentation handling
         - add support for Spacemit K3
      - Cadence (macb):
         - support PHYs that have inband autoneg disabled with GEM
         - support IEEE 802.3az EEE
         - rework usrio capabilities and handling
      - AMD (xgbe):
         - improve power management for S0i3
         - improve TX resilience for link-down handling

   - Virtual:
      - Google cloud vNIC:
         - support larger ring sizes in DQO-QPL mode
         - improve HW-GRO handling
         - support UDP GSO for DQO format
      - PCIe NTB:
         - support queue count configuration

   - Ethernet PHYs:
      - automatically disable PHY autonomous EEE if MAC is in charge
      - Broadcom:
         - add BCM84891/BCM84892 support
      - Micrel:
         - support for LAN9645X internal PHY
      - Realtek:
         - add RTL8224 pair order support
         - support PHY LEDs on RTL8211F-VD
         - support spread spectrum clocking (SSC)
      - Maxlinear:
         - add PHY-level statistics via ethtool

   - Ethernet switches:
      - Maxlinear (mxl862xx):
         - support for bridge offloading
         - support for VLANs
         - support driver statistics

   - Bluetooth:
      - large number of fixes and new device IDs
      - Mediatek:
         - support MT6639 (MT7927)
         - support MT7902 SDIO

   - WiFi:
      - Intel (iwlwifi):
         - UNII-9 and continuing UHR work
      - MediaTek (mt76):
         - mt7996/mt7925 MLO fixes/improvements
         - mt7996 NPU support (HW eth/wifi traffic offload)
      - Qualcomm (ath12k):
         - monitor mode support on IPQ5332
         - basic hwmon temperature reporting
         - support IPQ5424
      - Realtek:
         - add USB RX aggregation to improve performance
         - add USB TX flow control by tracking in-flight URBs

   - Cellular:
      - IPA v5.2 support"

* tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1561 commits)
  net: pse-pd: fix kernel-doc function name for pse_control_find_by_id()
  wireguard: device: use exit_rtnl callback instead of manual rtnl_lock in pre_exit
  wireguard: allowedips: remove redundant space
  tools: ynl: add sample for wireguard
  wireguard: allowedips: Use kfree_rcu() instead of call_rcu()
  MAINTAINERS: Add netkit selftest files
  selftests/net: Add additional test coverage in nk_qlease
  selftests/net: Split netdevsim tests from HW tests in nk_qlease
  tools/ynl: Make YnlFamily closeable as a context manager
  net: airoha: Add missing PPE configurations in airoha_ppe_hw_init()
  net: airoha: Fix VIP configuration for AN7583 SoC
  net: caif: clear client service pointer on teardown
  net: strparser: fix skb_head leak in strp_abort_strp()
  net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()
  selftests/bpf: add test for xdp_master_redirect with bond not up
  net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master
  net: airoha: Remove PCE_MC_EN_MASK bit in REG_FE_PCE_CFG configuration
  sctp: disable BH before calling udp_tunnel_xmit_skb()
  sctp: fix missing encap_port propagation for GSO fragments
  net: airoha: Rely on net_device pointer in ETS callbacks
  ...
2026-04-14 18:36:10 -07:00
Linus Torvalds
f5ad410100 Merge tag 'bpf-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Alexei Starovoitov:

 - Welcome new BPF maintainers: Kumar Kartikeya Dwivedi, Eduard
   Zingerman while Martin KaFai Lau reduced his load to Reviwer.

 - Lots of fixes everywhere from many first time contributors. Thank you
   All.

 - Diff stat is dominated by mechanical split of verifier.c into
   multiple components:

    - backtrack.c: backtracking logic and jump history
    - states.c:    state equivalence
    - cfg.c:       control flow graph, postorder, strongly connected
                   components
    - liveness.c:  register and stack liveness
    - fixups.c:    post-verification passes: instruction patching, dead
                   code removal, bpf_loop inlining, finalize fastcall

   8k line were moved. verifier.c still stands at 20k lines.

   Further refactoring is planned for the next release.

 - Replace dynamic stack liveness with static stack liveness based on
   data flow analysis.

   This improved the verification time by 2x for some programs and
   equally reduced memory consumption. New logic is in liveness.c and
   supported by constant folding in const_fold.c (Eduard Zingerman,
   Alexei Starovoitov)

 - Introduce BTF layout to ease addition of new BTF kinds (Alan Maguire)

 - Use kmalloc_nolock() universally in BPF local storage (Amery Hung)

 - Fix several bugs in linked registers delta tracking (Daniel Borkmann)

 - Improve verifier support of arena pointers (Emil Tsalapatis)

 - Improve verifier tracking of register bounds in min/max and tnum
   domains (Harishankar Vishwanathan, Paul Chaignon, Hao Sun)

 - Further extend support for implicit arguments in the verifier (Ihor
   Solodrai)

 - Add support for nop,nop5 instruction combo for USDT probes in libbpf
   (Jiri Olsa)

 - Support merging multiple module BTFs (Josef Bacik)

 - Extend applicability of bpf_kptr_xchg (Kaitao Cheng)

 - Retire rcu_trace_implies_rcu_gp() (Kumar Kartikeya Dwivedi)

 - Support variable offset context access for 'syscall' programs (Kumar
   Kartikeya Dwivedi)

 - Migrate bpf_task_work and dynptr to kmalloc_nolock() (Mykyta
   Yatsenko)

 - Fix UAF in in open-coded task_vma iterator (Puranjay Mohan)

* tag 'bpf-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (241 commits)
  selftests/bpf: cover short IPv4/IPv6 inputs with adjust_room
  bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb
  selftests/bpf: Use memfd_create instead of shm_open in cgroup_iter_memcg
  selftests/bpf: Add test for cgroup storage OOB read
  bpf: Fix OOB in pcpu_init_value
  selftests/bpf: Fix reg_bounds to match new tnum-based refinement
  selftests/bpf: Add tests for non-arena/arena operations
  bpf: Allow instructions with arena source and non-arena dest registers
  bpftool: add missing fsession to the usage and docs of bpftool
  docs/bpf: add missing fsession attach type to docs
  bpf: add missing fsession to the verifier log
  bpf: Move BTF checking logic into check_btf.c
  bpf: Move backtracking logic to backtrack.c
  bpf: Move state equivalence logic to states.c
  bpf: Move check_cfg() into cfg.c
  bpf: Move compute_insn_live_regs() into liveness.c
  bpf: Move fixup/post-processing logic from verifier.c into fixups.c
  bpf: Simplify do_check_insn()
  bpf: Move checks for reserved fields out of the main pass
  bpf: Delete unused variable
  ...
2026-04-14 18:04:04 -07:00
Linus Torvalds
e997ac58ad Merge tag 'linux_kselftest-next-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest updates from Shuah Khan:

 - cpu-hotplug: fix to check if cpu hotplug is supported to avoid
   test failures when cpu hotplug isn't supported.

 - frace: fix to relevant comparisons and path checks in the helper so
   it  handles those patterns without spurious shell warnings.

 - runner.sh: add ktrap support

 - tracing: fix to make --logdir option work again

 - tracing: fix to check awk supports non POSIX strtonum()

 - mqueue: fix incorrectly named settings file to make sure the test
   used the correct timeout value

 - kselftest:
    - fix to treat xpass as successful result
    - add ksft_reset_state()

 - kselftest_harness:
    - validate kselftest exit codes are handled explicitly
    - add detection of invalid mixing of kselftest and harness
      functionality
    - add validation of intermixing of kselftest and harness
      functionality

 - run_kselftest.sh:
    - remove unused $ROOT
    - resolve BASE_DIR with pwd -P to avoid dependency on realpath
      or readlink commands to generate a physical absolute path for
      BASE_DIR
    - allow choosing per-test log directory
    - preserve subtarget failures in all/install

* tag 'linux_kselftest-next-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/ftrace: Quote check_requires comparisons
  selftests: Preserve subtarget failures in all/install
  selftests/run_kselftest.sh: Allow choosing per-test log directory
  selftests/run_kselftest.sh: Resolve BASE_DIR with pwd -P
  selftests/run_kselftest.sh: Remove unused $ROOT
  selftests/cpu-hotplug: Fix check for cpu hotplug not supported
  selftests/mqueue: Fix incorrectly named file
  selftests: Use ktap helpers for runner.sh
  selftests: harness: Validate intermixing of kselftest and harness functionality
  selftests: harness: Detect illegal mixing of kselftest and harness functionality
  selftests: kselftest: Add ksft_reset_state()
  selftests: harness: Validate that explicit kselftest exitcodes are handled
  selftests: kselftest: Treat xpass as successful result
  selftests/tracing: Fix to check awk supports non POSIX strtonum()
  selftests/tracing: Fix to make --logdir option work again
2026-04-14 17:46:12 -07:00
Linus Torvalds
6198c86a97 Merge tag 'linux_kselftest-kunit-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit tool updates from Shuah Khan:

 - terminate kernel under test on SIGINT when it catches SIGINT to make
   sure the TTY isn't messed up and terminate the running kernel

 - recommend --raw_output=all when KTAP header isn't found in the kernel
   output, it's useful to re-run the test with --raw_output=all to find
   out the reasons why the test didn't complete.

 - skip stty when stdin is not a tty to avoid writing noise to stderr.

 - show suites when user runs --list_suites option instead of entire
   list of tests to make the output user friendly and concise.

* tag 'linux_kselftest-kunit-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: tool: Terminate kernel under test on SIGINT
  kunit: tool: skip stty when stdin is not a tty
  kunit: tool: Recommend --raw_output=all if no KTAP found
  kunit: Add --list_suites to show suites
2026-04-14 17:39:42 -07:00
Linus Torvalds
88b29f3f57 Merge tag 'modules-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux
Pull module updates from Sami Tolvanen:
 "Kernel symbol flags:

   - Replace the separate *_gpl symbol sections (__ksymtab_gpl and
     __kcrctab_gpl) with a unified symbol table and a new __kflagstab
     section.

     This section stores symbol flags, such as the GPL-only flag, as an
     8-bit bitset for each exported symbol. This is a cleanup that
     simplifies symbol lookup in the module loader by avoiding table
     fragmentation and will allow a cleaner way to add more flags later
     if needed.

  Module signature UAPI:

   - Move struct module_signature to the UAPI headers to allow reuse by
     tools outside the kernel proper, such as kmod and
     scripts/sign-file.

     This also renames a few constants for clarity and drops unused
     signature types as preparation for hash-based module integrity
     checking work that's in progress.

  Sysfs:

   - Add a /sys/module/<module>/import_ns sysfs attribute to show the
     symbol namespaces imported by loaded modules.

     This makes it easier to verify driver API access at runtime on
     systems that care about such things (e.g. Android).

  Cleanups and fixes:

   - Force sh_addr to 0 for all sections in module.lds. This prevents
     non-zero section addresses when linking modules with 'ld.bfd -r',
     which confused elfutils.

   - Fix a memory leak of charp module parameters on module unload when
     the kernel is configured with CONFIG_SYSFS=n.

   - Override the -EEXIST error code returned by module_init() to
     userspace. This prevents confusion with the errno reserved by the
     module loader to indicate that a module is already loaded.

   - Simplify the warning message and drop the stack dump on positive
     returns from module_init().

   - Drop unnecessary extern keywords from function declarations and
     synchronize parse_args() arguments with their implementation"

* tag 'modules-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux: (23 commits)
  module: Simplify warning on positive returns from module_init()
  module: Override -EEXIST module return
  documentation: remove references to *_gpl sections
  module: remove *_gpl sections from vmlinux and modules
  module: deprecate usage of *_gpl sections in module loader
  module: use kflagstab instead of *_gpl sections
  module: populate kflagstab in modpost
  module: add kflagstab section to vmlinux and modules
  module: define ksym_flags enumeration to represent kernel symbol flags
  selftests/bpf: verify_pkcs7_sig: Use 'struct module_signature' from the UAPI headers
  sign-file: use 'struct module_signature' from the UAPI headers
  tools uapi headers: add linux/module_signature.h
  module: Move 'struct module_signature' to UAPI
  module: Give MODULE_SIG_STRING a more descriptive name
  module: Give 'enum pkey_id_type' a more specific name
  module: Drop unused signature types
  extract-cert: drop unused definition of PKEY_ID_PKCS7
  docs: symbol-namespaces: mention sysfs attribute
  module: expose imported namespaces via sysfs
  module: Remove extern keyword from param prototypes
  ...
2026-04-14 17:16:38 -07:00
Linus Torvalds
ee60c510fb Merge tag 'nolibc-20260412-for-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc
Pull nolibc updates from Thomas Weißschuh:

 - Many new features and optimizations to printf()

 - Rename non-standard symbols to avoid collisions with application code

 - Support for byteswap.h, endian.h, err.h and asprintf()

 - 64-bit dev_t

 - Smaller cleanups and fixes to the code and build system

* tag 'nolibc-20260412-for-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc: (61 commits)
  selftests/nolibc: use gcc 15
  tools/nolibc: support UBSAN on gcc
  tools/nolibc: create __nolibc_no_sanitize_ubsan
  selftests/nolibc: don't skip tests for unimplemented syscalls anymore
  selftests/nolibc: explicitly handle ENOSYS from ptrace()
  tools/nolibc: add byteorder conversions
  tools/nolibc: add the _syscall() macro
  tools/nolibc: move the call to __sysret() into syscall()
  tools/nolibc: rename the internal macros used in syscall()
  selftests/nolibc: only use libgcc when really necessary
  selftests/nolibc: test the memory allocator
  tools/nolibc: check for overflow in calloc() without divisions
  tools/nolibc: add support for asprintf()
  tools/nolibc: use __builtin_offsetof()
  tools/nolibc: use makedev() in fstatat()
  tools/nolibc: handle all major and minor numbers in makedev() and friends
  tools/nolibc: make dev_t 64 bits wide
  tools/nolibc: move the logic of makedev() and friends into functions
  selftests/nolibc: add a test for stat().st_rdev
  selftests/nolibc: add some tests for makedev() and friends
  ...
2026-04-14 17:13:09 -07:00
Linus Torvalds
3203a08c12 Merge tag 'powerpc-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Madhavan Srinivasan:

 - powerpc support for huge pfnmaps

 - Cleanups to use masked user access

 - Rework pnv_ioda_pick_m64_pe() to use better bitmap API

 - Convert powerpc to AUDIT_ARCH_COMPAT_GENERIC

 - Backup region offset update to eflcorehdr

 - Fixes for wii/ps3 platform

 - Implement JIT support for private stack in powerpc

 - Implement JIT support for fsession in powerpc64 trampoline

 - Add support for instruction array and indirect jump in powerpc

 - Misc selftest fixes and cleanups

Thanks to Abhishek Dubey, Aditya Gupta, Alex Williamson, Amit Machhiwal,
Andrew Donnellan, Bartosz Golaszewski, Cédric Le Goater, Chen Ni,
Christophe Leroy (CS GROUP), Hari Bathini, J. Neuschäfer, Mukesh Kumar
Chaurasiya (IBM), Nam Cao, Nilay Shroff, Pavithra Prakash, Randy Dunlap,
Ritesh Harjani (IBM), Shrikanth Hegde, Sourabh Jain, Vaibhav Jain,
Venkat Rao Bagalkote, and Yury Norov (NVIDIA)

* tag 'powerpc-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (47 commits)
  mailmap: Add entry for Andrew Donnellan
  powerpc32/bpf: fix loading fsession func metadata using PPC_LI32
  selftest/bpf: Enable gotox tests for powerpc64
  powerpc64/bpf: Add support for indirect jump
  selftest/bpf: Enable instruction array test for powerpc
  powerpc/bpf: Add support for instruction array
  powerpc32/bpf: Add fsession support
  powerpc64/bpf: Implement fsession support
  selftests/bpf: Enable private stack tests for powerpc64
  powerpc64/bpf: Implement JIT support for private stack
  powerpc: pci-ioda: Optimize pnv_ioda_pick_m64_pe()
  powerpc: pci-ioda: use bitmap_alloc() in pnv_ioda_pick_m64_pe()
  powerpc/net: Inline checksum wrappers and convert to scoped user access
  powerpc/sstep: Convert to scoped user access
  powerpc/align: Convert emulate_spe() to scoped user access
  powerpc/ptrace: Convert gpr32_set_common_user() to scoped user access
  powerpc/futex: Use masked user access
  powerpc/audit: Convert powerpc to AUDIT_ARCH_COMPAT_GENERIC
  cpuidle: powerpc: avoid double clear when breaking snooze
  powerpc/ps3: spu.c: fix enum and Return kernel-doc warnings
  ...
2026-04-14 17:10:15 -07:00
Linus Torvalds
c43267e679 Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
 "The biggest changes are MPAM enablement in drivers/resctrl and new PMU
  support under drivers/perf.

  On the core side, FEAT_LSUI lets futex atomic operations with EL0
  permissions, avoiding PAN toggling.

  The rest is mostly TLB invalidation refactoring, further generic entry
  work, sysreg updates and a few fixes.

  Core features:

   - Add support for FEAT_LSUI, allowing futex atomic operations without
     toggling Privileged Access Never (PAN)

   - Further refactor the arm64 exception handling code towards the
     generic entry infrastructure

   - Optimise __READ_ONCE() with CONFIG_LTO=y and allow alias analysis
     through it

  Memory management:

   - Refactor the arm64 TLB invalidation API and implementation for
     better control over barrier placement and level-hinted invalidation

   - Enable batched TLB flushes during memory hot-unplug

   - Fix rodata=full block mapping support for realm guests (when
     BBML2_NOABORT is available)

  Perf and PMU:

   - Add support for a whole bunch of system PMUs featured in NVIDIA's
     Tegra410 SoC (cspmu extensions for the fabric and PCIe, new drivers
     for CPU/C2C memory latency PMUs)

   - Clean up iomem resource handling in the Arm CMN driver

   - Fix signedness handling of AA64DFR0.{PMUVer,PerfMon}

  MPAM (Memory Partitioning And Monitoring):

   - Add architecture context-switch and hiding of the feature from KVM

   - Add interface to allow MPAM to be exposed to user-space using
     resctrl

   - Add errata workaround for some existing platforms

   - Add documentation for using MPAM and what shape of platforms can
     use resctrl

  Miscellaneous:

   - Check DAIF (and PMR, where relevant) at task-switch time

   - Skip TFSR_EL1 checks and barriers in synchronous MTE tag check mode
     (only relevant to asynchronous or asymmetric tag check modes)

   - Remove a duplicate allocation in the kexec code

   - Remove redundant save/restore of SCS SP on entry to/from EL0

   - Generate the KERNEL_HWCAP_ definitions from the arm64 hwcap
     descriptions

   - Add kselftest coverage for cmpbr_sigill()

   - Update sysreg definitions"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (109 commits)
  arm64: rsi: use linear-map alias for realm config buffer
  arm64: Kconfig: fix duplicate word in CMDLINE help text
  arm64: mte: Skip TFSR_EL1 checks and barriers in synchronous tag check mode
  arm64/sysreg: Update ID_AA64SMFR0_EL1 description to DDI0601 2025-12
  arm64/sysreg: Update ID_AA64ZFR0_EL1 description to DDI0601 2025-12
  arm64/sysreg: Update ID_AA64FPFR0_EL1 description to DDI0601 2025-12
  arm64/sysreg: Update ID_AA64ISAR2_EL1 description to DDI0601 2025-12
  arm64/sysreg: Update ID_AA64ISAR0_EL1 description to DDI0601 2025-12
  arm64/hwcap: Generate the KERNEL_HWCAP_ definitions for the hwcaps
  arm64: kexec: Remove duplicate allocation for trans_pgd
  ACPI: AGDI: fix missing newline in error message
  arm64: Check DAIF (and PMR) at task-switch time
  arm64: entry: Use split preemption logic
  arm64: entry: Use irqentry_{enter_from,exit_to}_kernel_mode()
  arm64: entry: Consistently prefix arm64-specific wrappers
  arm64: entry: Don't preempt with SError or Debug masked
  entry: Split preemption from irqentry_exit_to_kernel_mode()
  entry: Split kernel mode logic from irqentry_{enter,exit}()
  entry: Move irqentry_enter() prototype later
  entry: Remove local_irq_{enable,disable}_exit_to_user()
  ...
2026-04-14 16:48:56 -07:00
Jakub Kicinski
35c2c39832 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Merge in late fixes in preparation for the net-next PR.

Conflicts:

include/net/sch_generic.h
  a6bd339dbb ("net_sched: fix skb memory leak in deferred qdisc drops")
  ff2998f29f ("net: sched: introduce qdisc-specific drop reason tracing")
https://lore.kernel.org/adz0iX85FHMz0HdO@sirena.org.uk

drivers/net/ethernet/airoha/airoha_eth.c
  1acdfbdb51 ("net: airoha: Fix VIP configuration for AN7583 SoC")
  bf3471e6e6 ("net: airoha: Make flow control source port mapping dependent on nbq parameter")

Adjacent changes:

drivers/net/ethernet/airoha/airoha_ppe.c
  f44218cd5e ("net: airoha: Reset PPE cpu port configuration in airoha_ppe_hw_init()")
  7da62262ec ("inet: add ip_local_port_step_width sysctl to improve port usage distribution")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-14 12:04:00 -07:00
Linus Torvalds
f21f7b5162 Merge tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull vdso updates from Thomas Gleixner:

 - Make the handling of compat functions consistent and more robust

 - Rework the underlying data store so that it is dynamically allocated,
   which allows the conversion of the last holdout SPARC64 to the
   generic VDSO implementation

 - Rework the SPARC64 VDSO to utilize the generic implementation

 - Mop up the left overs of the non-generic VDSO support in the core
   code

 - Expand the VDSO selftest and make them more robust

 - Allow time namespaces to be enabled independently of the generic VDSO
   support, which was not possible before due to SPARC64 not using it

 - Various cleanups and improvements in the related code

* tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits)
  timens: Use task_lock guard in timens_get*()
  timens: Use mutex guard in proc_timens_set_offset()
  timens: Simplify some calls to put_time_ns()
  timens: Add a __free() wrapper for put_time_ns()
  timens: Remove dependency on the vDSO
  vdso/timens: Move functions to new file
  selftests: vDSO: vdso_test_correctness: Add a test for time()
  selftests: vDSO: vdso_test_correctness: Use facilities from parse_vdso.c
  selftests: vDSO: vdso_test_correctness: Handle different tv_usec types
  selftests: vDSO: vdso_test_correctness: Drop SYS_getcpu fallbacks
  selftests: vDSO: vdso_test_gettimeofday: Remove nolibc checks
  Revert "selftests: vDSO: parse_vdso: Use UAPI headers instead of libc headers"
  random: vDSO: Remove ifdeffery
  random: vDSO: Trim vDSO includes
  vdso/datapage: Trim down unnecessary includes
  vdso/datapage: Remove inclusion of gettimeofday.h
  vdso/helpers: Explicitly include vdso/processor.h
  vdso/gettimeofday: Add explicit includes
  random: vDSO: Add explicit includes
  MIPS: vdso: Explicitly include asm/vdso/vdso.h
  ...
2026-04-14 10:53:44 -07:00
Daniel Borkmann
1e822171ba selftests/net: Add additional test coverage in nk_qlease
Add further netkit queue-lease coverage for netns lifecycle of the guest
and physical halves, channel resize across active leases, single-device
and multi-lessee scenarios, L3 mode operation, lease capacity exhaustion,
and corner-cases of e.g. queue-create rejection paths. Also make the tests
more robust by removing the time.sleep(0.1) after netns deletion and turn
them into a wait loop.

Full test run:

  # ./nk_qlease.py
  TAP version 13
  1..45
  ok 1 nk_qlease.test_remove_phys
  ok 2 nk_qlease.test_double_lease
  ok 3 nk_qlease.test_virtual_lessor
  ok 4 nk_qlease.test_phys_lessee
  ok 5 nk_qlease.test_different_lessors
  ok 6 nk_qlease.test_queue_out_of_range
  ok 7 nk_qlease.test_resize_leased
  ok 8 nk_qlease.test_self_lease
  ok 9 nk_qlease.test_create_tx_type
  ok 10 nk_qlease.test_create_primary
  ok 11 nk_qlease.test_create_limit
  ok 12 nk_qlease.test_link_flap_phys
  ok 13 nk_qlease.test_queue_get_virtual
  ok 14 nk_qlease.test_remove_virt_first
  ok 15 nk_qlease.test_multiple_leases
  ok 16 nk_qlease.test_lease_queue_tx_type
  ok 17 nk_qlease.test_invalid_netns
  ok 18 nk_qlease.test_invalid_phys_ifindex
  ok 19 nk_qlease.test_multi_netkit_remove_phys
  ok 20 nk_qlease.test_single_remove_phys
  ok 21 nk_qlease.test_link_flap_virt
  ok 22 nk_qlease.test_phys_queue_no_lease
  ok 23 nk_qlease.test_same_ns_lease
  ok 24 nk_qlease.test_resize_after_unlease
  ok 25 nk_qlease.test_lease_queue_zero
  ok 26 nk_qlease.test_release_and_reuse
  ok 27 nk_qlease.test_veth_queue_create
  ok 28 nk_qlease.test_two_netkits_same_queue
  ok 29 nk_qlease.test_l3_mode_lease
  ok 30 nk_qlease.test_single_double_lease
  ok 31 nk_qlease.test_single_different_lessors
  ok 32 nk_qlease.test_cross_ns_netns_id
  ok 33 nk_qlease.test_delete_guest_netns
  ok 34 nk_qlease.test_move_guest_netns
  ok 35 nk_qlease.test_resize_phys_no_reduction
  ok 36 nk_qlease.test_delete_one_netkit_of_two
  ok 37 nk_qlease.test_bind_rx_leased_phys_queue
  ok 38 nk_qlease.test_resize_phys_shrink_past_leased
  ok 39 nk_qlease.test_resize_virt_not_supported
  ok 40 nk_qlease.test_lease_devices_down
  ok 41 nk_qlease.test_lease_capacity_exhaustion
  ok 42 nk_qlease.test_resize_phys_up
  ok 43 nk_qlease.test_multi_ns_lease
  ok 44 nk_qlease.test_multi_ns_delete_one
  ok 45 nk_qlease.test_move_phys_netns
  # Totals: pass:45 fail:0 xfail:0 xpass:0 skip:0 error:0

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20260413220809.604592-4-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-14 08:17:02 -07:00
Daniel Borkmann
e254ffb950 selftests/net: Split netdevsim tests from HW tests in nk_qlease
As pointed out in 3d2c3d2eea ("selftests: net: py: explicitly forbid
multiple ksft_run() calls"), ksft_run() cannot be called multiple times.

Move the netdevsim-based queue lease tests to selftests/net/ so that
each file has exactly one ksft_run() call.

The HW tests (io_uring ZC RX, queue attrs, XDP with MP, destroy) remain
in selftests/drivers/net/hw/.

Fixes: 65d657d806 ("selftests/net: Add queue leasing tests with netkit")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/netdev/20260409181950.7e099b6c@kernel.org
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20260413220809.604592-3-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-14 08:17:01 -07:00
Jiayuan Chen
8dd1bdde38 selftests/bpf: add test for xdp_master_redirect with bond not up
Add a selftest that reproduces the null-ptr-deref in
bond_rr_gen_slave_id() when XDP redirect targets a bond device in
round-robin mode that was never brought up. The test verifies the fix
by ensuring no crash occurs.

Test setup:
- bond0: active-backup mode, UP, with native XDP (enables
  bpf_master_redirect_enabled_key globally)
- bond1: round-robin mode, never UP
- veth1: slave of bond1, with generic XDP (XDP_TX)
- BPF_PROG_TEST_RUN with live frames triggers the redirect path

Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Link: https://patch.msgid.link/20260411005524.201200-3-jiayuan.chen@linux.dev
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-04-14 10:39:24 +02:00
Christian Brauner
cad3bf1c33 selftests/namespaces: remove unused utils.h include from listns_efault_test
Remove the inclusion of ../filesystems/utils.h from listns_efault_test.c.
The test doesn't use any symbols from that header. Including it alongside
../pidfd/pidfd.h causes a build failure because both headers define
wait_for_pid() with conflicting linkage:

  ../filesystems/utils.h:  extern int wait_for_pid(pid_t pid);
  ../pidfd/pidfd.h:        static inline int wait_for_pid(pid_t pid)

All symbols the test actually uses (create_child, read_nointr,
write_nointr, sys_pidfd_send_signal) come from pidfd.h.

Reported-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/all/acPV19IY3Gna6Ira@sirena.org.uk
Fixes: 07d7ad46da ("selftests/namespaces: test for efault")
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-04-14 09:31:18 +02:00
Christian Brauner
660c09404c selftests/fsmount_ns: add missing TARGETS and fix cap test
Add missing top-level kselftest TARGETS entries for empty_mntns and
fsmount_ns so that 'make kselftest' discovers and runs these tests.

Fix requires_cap_sys_admin test which always SKIPped because fsopen()
was called after enter_userns(), where CAP_SYS_ADMIN in the mount
namespace's user_ns is unavailable. Move fsopen/fsconfig before fork so
the configured fs_fd is inherited by the child, which then only needs to
call fsmount() after dropping privileges.

Fixes: 3ac7ea91f3 ("selftests: add FSMOUNT_NAMESPACE tests")
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-04-14 09:31:07 +02:00
Christian Brauner
d38aa6cdee selftests/empty_mntns: fix wrong CLONE_EMPTY_MNTNS hex value in comment
CLONE_EMPTY_MNTNS is (1ULL << 37) = 0x2000000000ULL, not 0x400000000ULL.

Fixes: 5b8ffd63fb ("selftests/filesystems: add clone3 tests for empty mount namespaces")
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-04-14 09:30:57 +02:00
Christian Brauner
1a398a2378 selftests/empty_mntns: fix statmount_alloc() signature mismatch
empty_mntns.h includes ../statmount/statmount.h which provides a
4-argument statmount_alloc(mnt_id, mnt_ns_id, mask, flags), but then
redefines its own 3-argument version without the flags parameter. This
causes a build failure due to conflicting types.

Remove the duplicate definition from empty_mntns.h and update all
callers to pass 0 for the flags argument.

Fixes: 32f54f2bbc ("selftests/filesystems: add tests for empty mount namespaces")
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-04-14 09:30:48 +02:00
Christian Brauner
a27e464262 selftests/statmount: remove duplicate wait_for_pid()
Remove the local static wait_for_pid() definition from
statmount_test_ns.c as it conflicts with the extern declaration in
utils.h. The identical function is already provided by utils.c.

Fixes: 3ac7ea91f3 ("selftests: add FSMOUNT_NAMESPACE tests")
Cc: <stable@kernel.org> # mainline only
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-04-14 09:30:31 +02:00
Linus Torvalds
1334d2a3b3 Merge tag 'gpio-updates-for-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
 "For this merge window we have two new drivers: support for
  GPIO-signalled ACPI events on Intel platforms and a generic
  GPIO-over-pinctrl driver using the ARM SCMI protocol for
  controlling pins.

  Several things have been reworked in GPIO core: we unduplicated GPIO
  hog handling, reduced the number of SRCU locks and dereferences,
  improved support for software-node-based lookup and removed more
  legacy code after converting remaining users to modern alternatives.

  There's also a number of driver reworks and refactoring, documentation
  updates, some bug-fixes and new tests.

  GPIO core:
   - defer probe on software node lookups when the remote software node
     exists but has not been registered as a firmware node yet
   - unify GPIO hog handling by moving code duplicated in OF and ACPI
     modules into GPIO core and allow setting up hogs with software
     nodes
   - allow matching GPIO controllers by secondary firmware node if
     matching by primary does not succeed
   - demote deferral warnings to debug level as they are quite normal
     when using software nodes which don't support fw_devlink yet
   - disable the legacy GPIO character device uAPI v1 supprt in Kconfig
     by default
   - rework several core functions in preparation for the upcoming
     Revocable helper library for protecting resources against sudden
     removal, this reduces the number of SRCU dereferences in GPIO core
   - simplify file descriptor logic in GPIO character device code by
     using FD_PREPARE()
   - introduce a header defining symbols used by both GPIO consumers and
     providers to avoid having to include provider-specific headers from
     drivers which only consume GPIOs
   - replace snprintf() with strscpy() where formatting is not required

  New drivers:
   - add the gpio-by-pinctrl generic driver using the ARM SCMI protocol
     to control GPIOs (along with SCMI changes pulled from the pinctrl
     tree)
   - add a driver providing support for handling of platform events via
     GPIO-signalled ACPI events (used on Intel Nova Lake and later
     platforms)

  Driver changes:
   - extend the gpio-kempld driver with support for more recent models,
     interrupts and setting/getting multiple values at once
   - improve interrupt handling in gpio-brcmstb
   - add support for multi-SoC systems in gpio-tegra186
   - make sure we return correct values from the .get() callbacks in
     several GPIO drivers by normalizing any values other than 0, 1 or
     negative error numbers
   - use flexible arrays in several drivers to reduce the number of
     required memory allocations
   - simplify synchronous waiting for virtual drivers to probe and
     remove the dedicated, a bit overengineered helper library
     dev-sync-probe
   - remove unneeded Kconfig dependencies on OF_GPIO in several drivers
     and subsystems
   - convert the two remaining users of of_get_named_gpio() to using
     GPIO descriptors and remove the (no longer used) function along
     with the header that declares it
   - add missing includes in gpio-mmio
   - shrink and simplify code in gpio-max732x by using guard(mutex)
   - remove duplicated code handling the 'ngpios' property from
     gpio-ts4800, it's already handled in GPIO core
   - use correct variable type in gpio-aspeed
   - add support for a new model in gpio-realtek-otto
   - allow to specify the active-low setting of simulated hogs over the
     configfs interface (in addition to existing devicetree support) in
     gpio-sim

  Bug fixes:
   - clear the OF_POPULATED flag on hog nodes in GPIO chip remove path
     on OF systems
   - fix resource leaks in error path in gpiochip_add_data_with_key()
   - drop redundant device reference in gpio-mpsse

  Tests:
   - add selftests for use-after-free cases in GPIO character device
     code

  DT bindings:
   - add a DT binding document for SCMI based, gpio-over-pinctrl devices
   - fix interrupt description in microchip,mpfs-gpio
   - add new compatible for gpio-realtek-otto
   - describe the resets of the mpfs-gpio controller
   - fix maintainer's email in gpio-delay bindings
   - remove the binding document for cavium,thunder-8890 as the
     corresponding device is bound over PCI and not firmware nodes

  Documentation:
   - update the recommended way of converting legacy boards to using
     software nodes for GPIO description
   - describe GPIO line value semantics
   - misc updates to kerneldocs

  Misc:
   - convert OMAP1 ams-delta board to using GPIO hogs described with
     software nodes"

* tag 'gpio-updates-for-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (79 commits)
  gpio: swnode: defer probe on references to unregistered software nodes
  dt-bindings: gpio: cavium,thunder-8890: Remove DT binding
  Documentation: gpio: update the preferred method for using software node lookup
  gpio: gpio-by-pinctrl: s/used to do/is used to do/
  gpio: aspeed: fix unsigned long int declaration
  gpio: rockchip: convert to dynamic GPIO base allocation
  gpio: remove dev-sync-probe
  gpio: virtuser: stop using dev-sync-probe
  gpio: aggregator: stop using dev-sync-probe
  gpio: sim: stop using dev-sync-probe
  gpio: Add Intel Nova Lake ACPI GPIO events driver
  gpiolib: Make deferral warnings debug messages
  gpiolib: fix hogs with multiple lines
  gpio: fix up CONFIG_OF dependencies
  gpio: gpio-by-pinctrl: add pinctrl based generic GPIO driver
  gpio: dt-bindings: Add GPIO on top of generic pin control
  firmware: arm_scmi: Allow PINCTRL_REQUEST to return EOPNOTSUPP
  pinctrl: scmi: ignore PIN_CONFIG_PERSIST_STATE
  pinctrl: scmi: Delete PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS support
  pinctrl: scmi: Add SCMI_PIN_INPUT_VALUE
  ...
2026-04-13 20:10:58 -07:00
Linus Torvalds
4793dae01f Merge tag 'driver-core-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
 "debugfs:
   - Fix NULL pointer dereference in debugfs_create_str()
   - Fix misplaced EXPORT_SYMBOL_GPL for debugfs_create_str()
   - Fix soundwire debugfs NULL pointer dereference from uninitialized
     firmware_file

  device property:
   - Make fwnode flags modifications thread safe; widen the field to
     unsigned long and use set_bit() / clear_bit() based accessors
   - Document how to check for the property presence

  devres:
   - Separate struct devres_node from its "subclasses" (struct devres,
     struct devres_group); give struct devres_node its own release and
     free callbacks for per-type dispatch
   - Introduce struct devres_action for devres actions, avoiding the
     ARCH_DMA_MINALIGN alignment overhead of struct devres
   - Export struct devres_node and its init/add/remove/dbginfo
     primitives for use by Rust Devres<T>
   - Fix missing node debug info in devm_krealloc()
   - Use guard(spinlock_irqsave) where applicable; consolidate unlock
     paths in devres_release_group()

  driver_override:
   - Convert PCI, WMI, vdpa, s390/cio, s390/ap, and fsl-mc to the
     generic driver_override infrastructure, replacing per-bus
     driver_override strings, sysfs attributes, and match logic; fixes a
     potential UAF from unsynchronized access to driver_override in bus
     match() callbacks
   - Simplify __device_set_driver_override() logic

  kernfs:
   - Send IN_DELETE_SELF and IN_IGNORED inotify events on kernfs file
     and directory removal
   - Add corresponding selftests for memcg

  platform:
   - Allow attaching software nodes when creating platform devices via a
     new 'swnode' field in struct platform_device_info
   - Add kerneldoc for struct platform_device_info

  software node:
   - Move software node initialization from postcore_initcall() to
     driver_init(), making it available early in the boot process
   - Move kernel_kobj initialization (ksysfs_init) earlier to support
     the above
   - Remove software_node_exit(); dead code in a built-in unit

  SoC:
   - Introduce of_machine_read_compatible() and of_machine_read_model()
     OF helpers and export soc_attr_read_machine() to replace direct
     accesses to of_root from SoC drivers; also enables
     CONFIG_COMPILE_TEST coverage for these drivers

  sysfs:
   - Constify attribute group array pointers to
     'const struct attribute_group *const *' in sysfs functions,
     device_add_groups() / device_remove_groups(), and struct class

  Rust:
   - Devres:
      - Embed struct devres_node directly in Devres<T> instead of going
        through devm_add_action(), avoiding the extra allocation and the
        unnecessary ARCH_DMA_MINALIGN alignment

   - I/O:
      - Turn IoCapable from a marker trait into a functional trait
        carrying the raw I/O accessor implementation (io_read /
        io_write), providing working defaults for the per-type Io
        methods
      - Add RelaxedMmio wrapper type, making relaxed accessors usable in
        code generic over the Io trait
      - Remove overloaded per-type Io methods and per-backend macros
        from Mmio and PCI ConfigSpace

   - I/O (Register):
      - Add IoLoc trait and generic read/write/update methods to the Io
        trait, making I/O operations parameterizable by typed locations
      - Add register! macro for defining hardware register types with
        typed bitfield accessors backed by Bounded values; supports
        direct, relative, and array register addressing
      - Add write_reg() / try_write_reg() and LocatedRegister trait
      - Update PCI sample driver to demonstrate the register! macro

         Example:

         ```
             register! {
                 /// UART control register.
                 CTRL(u32) @ 0x18 {
                     /// Receiver enable.
                     19:19   rx_enable => bool;
                     /// Parity configuration.
                     14:13   parity ?=> Parity;
                 }

                 /// FIFO watermark and counter register.
                 WATER(u32) @ 0x2c {
                     /// Number of datawords in the receive FIFO.
                     26:24   rx_count;
                     /// RX interrupt threshold.
                     17:16   rx_water;
                 }
             }

             impl WATER {
                 fn rx_above_watermark(&self) -> bool {
                     self.rx_count() > self.rx_water()
                 }
             }

             fn init(bar: &pci::Bar<BAR0_SIZE>) {
                 let water = WATER::zeroed()
                     .with_const_rx_water::<1>(); // > 3 would not compile
                 bar.write_reg(water);

                 let ctrl = CTRL::zeroed()
                     .with_parity(Parity::Even)
                     .with_rx_enable(true);
                 bar.write_reg(ctrl);
             }

             fn handle_rx(bar: &pci::Bar<BAR0_SIZE>) {
                 if bar.read(WATER).rx_above_watermark() {
                     // drain the FIFO
                 }
             }

             fn set_parity(bar: &pci::Bar<BAR0_SIZE>, parity: Parity) {
                 bar.update(CTRL, |r| r.with_parity(parity));
             }
         ```

   - IRQ:
      - Move 'static bounds from where clauses to trait declarations for
        IRQ handler traits

   - Misc:
      - Enable the generic_arg_infer Rust feature
      - Extend Bounded with shift operations, single-bit bool
        conversion, and const get()

  Misc:
   - Make deferred_probe_timeout default a Kconfig option
   - Drop auxiliary_dev_pm_ops; the PM core falls back to driver PM
     callbacks when no bus type PM ops are set
   - Add conditional guard support for device_lock()
   - Add ksysfs.c to the DRIVER CORE MAINTAINERS entry
   - Fix kernel-doc warnings in base.h
   - Fix stale reference to memory_block_add_nid() in documentation"

* tag 'driver-core-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (67 commits)
  bus: fsl-mc: use generic driver_override infrastructure
  s390/ap: use generic driver_override infrastructure
  s390/cio: use generic driver_override infrastructure
  vdpa: use generic driver_override infrastructure
  platform/wmi: use generic driver_override infrastructure
  PCI: use generic driver_override infrastructure
  driver core: make software nodes available earlier
  software node: remove software_node_exit()
  kernel: ksysfs: initialize kernel_kobj earlier
  MAINTAINERS: add ksysfs.c to the DRIVER CORE entry
  drivers/base/memory: fix stale reference to memory_block_add_nid()
  device property: Document how to check for the property presence
  soundwire: debugfs: initialize firmware_file to empty string
  debugfs: fix placement of EXPORT_SYMBOL_GPL for debugfs_create_str()
  debugfs: check for NULL pointer in debugfs_create_str()
  driver core: Make deferred_probe_timeout default a Kconfig option
  driver core: simplify __device_set_driver_override() clearing logic
  driver core: auxiliary bus: Drop auxiliary_dev_pm_ops
  device property: Make modifications of fwnode "flags" thread safe
  rust: devres: embed struct devres_node directly
  ...
2026-04-13 19:03:11 -07:00
Linus Torvalds
d568788baa Merge tag 'hardening-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:

 - randomize_kstack: Improve implementation across arches (Ryan Roberts)

 - lkdtm/fortify: Drop unneeded FORTIFY_STR_OBJECT test

 - refcount: Remove unused __signed_wrap function annotations

* tag 'hardening-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  lkdtm/fortify: Drop unneeded FORTIFY_STR_OBJECT test
  refcount: Remove unused __signed_wrap function annotations
  randomize_kstack: Unify random source across arches
  randomize_kstack: Maintain kstack_offset per task
2026-04-13 17:52:29 -07:00
Linus Torvalds
cea4a90faf Merge tag 'seccomp-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp update from Kees Cook:

 - selftests: Add hard-coded __NR_uprobe for x86_64 (Oleg Nesterov)

* tag 'seccomp-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  selftests/seccomp: Add hard-coded __NR_uprobe for x86_64
2026-04-13 17:45:25 -07:00
Linus Torvalds
d142ab35ee Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull CRC updates from Eric Biggers:

 - Several improvements related to crc_kunit, to align with the standard
   KUnit conventions and make it easier for developers and CI systems to
   run this test suite

 - Add an arm64-optimized implementation of CRC64-NVME

 - Remove unused code for big endian arm64

* tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
  lib/crc: arm64: Simplify intrinsics implementation
  lib/crc: arm64: Use existing macros for kernel-mode FPU cflags
  lib/crc: arm64: Drop unnecessary chunking logic from crc64
  lib/crc: arm64: Assume a little-endian kernel
  lib/crc: arm64: add NEON accelerated CRC64-NVMe implementation
  lib/crc: arm64: Drop check for CONFIG_KERNEL_MODE_NEON
  crypto: crc32c - Remove another outdated comment
  crypto: crc32c - Remove more outdated usage information
  kunit: configs: Enable all CRC tests in all_tests.config
  lib/crc: tests: Add a .kunitconfig file
  lib/crc: tests: Add CRC_ENABLE_ALL_FOR_KUNIT
  lib/crc: tests: Make crc_kunit test only the enabled CRC variants
2026-04-13 17:36:04 -07:00
Linus Torvalds
370c388319 Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library updates from Eric Biggers:

 - Migrate more hash algorithms from the traditional crypto subsystem to
   lib/crypto/

   Like the algorithms migrated earlier (e.g. SHA-*), this simplifies
   the implementations, improves performance, enables further
   simplifications in calling code, and solves various other issues:

     - AES CBC-based MACs (AES-CMAC, AES-XCBC-MAC, and AES-CBC-MAC)

         - Support these algorithms in lib/crypto/ using the AES library
           and the existing arm64 assembly code

         - Reimplement the traditional crypto API's "cmac(aes)",
           "xcbc(aes)", and "cbcmac(aes)" on top of the library

         - Convert mac80211 to use the AES-CMAC library. Note: several
           other subsystems can use it too and will be converted later

         - Drop the broken, nonstandard, and likely unused support for
           "xcbc(aes)" with key lengths other than 128 bits

         - Enable optimizations by default

     - GHASH

         - Migrate the standalone GHASH code into lib/crypto/

         - Integrate the GHASH code more closely with the very similar
           POLYVAL code, and improve the generic GHASH implementation to
           resist cache-timing attacks and use much less memory

         - Reimplement the AES-GCM library and the "gcm" crypto_aead
           template on top of the GHASH library. Remove "ghash" from the
           crypto_shash API, as it's no longer needed

         - Enable optimizations by default

     - SM3

         - Migrate the kernel's existing SM3 code into lib/crypto/, and
           reimplement the traditional crypto API's "sm3" on top of it

         - I don't recommend using SM3, but this cleanup is worthwhile
           to organize the code the same way as other algorithms

 - Testing improvements:

     - Add a KUnit test suite for each of the new library APIs

     - Migrate the existing ChaCha20Poly1305 test to KUnit

     - Make the KUnit all_tests.config enable all crypto library tests

     - Move the test kconfig options to the Runtime Testing menu

 - Other updates to arch-optimized crypto code:

     - Optimize SHA-256 for Zhaoxin CPUs using the Padlock Hash Engine

     - Remove some MD5 implementations that are no longer worth keeping

     - Drop big endian and voluntary preemption support from the arm64
       code, as those configurations are no longer supported on arm64

 - Make jitterentropy and samples/tsm-mr use the crypto library APIs

* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (66 commits)
  lib/crypto: arm64: Assume a little-endian kernel
  arm64: fpsimd: Remove obsolete cond_yield macro
  lib/crypto: arm64/sha3: Remove obsolete chunking logic
  lib/crypto: arm64/sha512: Remove obsolete chunking logic
  lib/crypto: arm64/sha256: Remove obsolete chunking logic
  lib/crypto: arm64/sha1: Remove obsolete chunking logic
  lib/crypto: arm64/poly1305: Remove obsolete chunking logic
  lib/crypto: arm64/gf128hash: Remove obsolete chunking logic
  lib/crypto: arm64/chacha: Remove obsolete chunking logic
  lib/crypto: arm64/aes: Remove obsolete chunking logic
  lib/crypto: Include <crypto/utils.h> instead of <crypto/algapi.h>
  lib/crypto: aesgcm: Don't disable IRQs during AES block encryption
  lib/crypto: aescfb: Don't disable IRQs during AES block encryption
  lib/crypto: tests: Migrate ChaCha20Poly1305 self-test to KUnit
  lib/crypto: sparc: Drop optimized MD5 code
  lib/crypto: mips: Drop optimized MD5 code
  lib: Move crypto library tests to Runtime Testing menu
  crypto: sm3 - Remove 'struct sm3_state'
  crypto: sm3 - Remove the original "sm3_block_generic()"
  crypto: sm3 - Remove sm3_base.h
  ...
2026-04-13 17:31:39 -07:00
Linus Torvalds
7fe6ac157b Merge tag 'for-7.1/block-20260411' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block updates from Jens Axboe:

 - Add shared memory zero-copy I/O support for ublk, bypassing per-I/O
   copies between kernel and userspace by matching registered buffer
   PFNs at I/O time. Includes selftests.

 - Refactor bio integrity to support filesystem initiated integrity
   operations and arbitrary buffer alignment.

 - Clean up bio allocation, splitting bio_alloc_bioset() into clear fast
   and slow paths. Add bio_await() and bio_submit_or_kill() helpers,
   unify synchronous bi_end_io callbacks.

 - Fix zone write plug refcount handling and plug removal races. Add
   support for serializing zone writes at QD=1 for rotational zoned
   devices, yielding significant throughput improvements.

 - Add SED-OPAL ioctls for Single User Mode management and a STACK_RESET
   command.

 - Add io_uring passthrough (uring_cmd) support to the BSG layer.

 - Replace pp_buf in partition scanning with struct seq_buf.

 - zloop improvements and cleanups.

 - drbd genl cleanup, switching to pre_doit/post_doit.

 - NVMe pull request via Keith:
      - Fabrics authentication updates
      - Enhanced block queue limits support
      - Workqueue usage updates
      - A new write zeroes device quirk
      - Tagset cleanup fix for loop device

 - MD pull requests via Yu Kuai:
      - Fix raid5 soft lockup in retry_aligned_read()
      - Fix raid10 deadlock with check operation and nowait requests
      - Fix raid1 overlapping writes on writemostly disks
      - Fix sysfs deadlock on array_state=clear
      - Proactive RAID-5 parity building with llbitmap, with
        write_zeroes_unmap optimization for initial sync
      - Fix llbitmap barrier ordering, rdev skipping, and bitmap_ops
        version mismatch fallback
      - Fix bcache use-after-free and uninitialized closure
      - Validate raid5 journal metadata payload size
      - Various cleanups

 - Various other fixes, improvements, and cleanups

* tag 'for-7.1/block-20260411' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (146 commits)
  ublk: fix tautological comparison warning in ublk_ctrl_reg_buf
  scsi: bsg: fix buffer overflow in scsi_bsg_uring_cmd()
  block: refactor blkdev_zone_mgmt_ioctl
  MAINTAINERS: update ublk driver maintainer email
  Documentation: ublk: address review comments for SHMEM_ZC docs
  ublk: allow buffer registration before device is started
  ublk: replace xarray with IDA for shmem buffer index allocation
  ublk: simplify PFN range loop in __ublk_ctrl_reg_buf
  ublk: verify all pages in multi-page bvec fall within registered range
  ublk: widen ublk_shmem_buf_reg.len to __u64 for 4GB buffer support
  xfs: use bio_await in xfs_zone_gc_reset_sync
  block: add a bio_submit_or_kill helper
  block: factor out a bio_await helper
  block: unify the synchronous bi_end_io callbacks
  xfs: fix number of GC bvecs
  selftests/ublk: add read-only buffer registration test
  selftests/ublk: add filesystem fio verify test for shmem_zc
  selftests/ublk: add hugetlbfs shmem_zc test for loop target
  selftests/ublk: add shared memory zero-copy test
  selftests/ublk: add UBLK_F_SHMEM_ZC support for loop target
  ...
2026-04-13 15:51:31 -07:00
Linus Torvalds
b8f82cb0d8 Merge tag 'landlock-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux
Pull Landlock update from Mickaël Salaün:
 "This adds a new Landlock access right for pathname UNIX domain sockets
  thanks to a new LSM hook, and a few fixes"

* tag 'landlock-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: (23 commits)
  landlock: Document fallocate(2) as another truncation corner case
  landlock: Document FS access right for pathname UNIX sockets
  selftests/landlock: Simplify ruleset creation and enforcement in fs_test
  selftests/landlock: Check that coredump sockets stay unrestricted
  selftests/landlock: Audit test for LANDLOCK_ACCESS_FS_RESOLVE_UNIX
  selftests/landlock: Test LANDLOCK_ACCESS_FS_RESOLVE_UNIX
  selftests/landlock: Replace access_fs_16 with ACCESS_ALL in fs_test
  samples/landlock: Add support for named UNIX domain socket restrictions
  landlock: Clarify BUILD_BUG_ON check in scoping logic
  landlock: Control pathname UNIX domain socket resolution by path
  landlock: Use mem_is_zero() in is_layer_masks_allowed()
  lsm: Add LSM hook security_unix_find
  landlock: Fix kernel-doc warning for pointer-to-array parameters
  landlock: Fix formatting in tsync.c
  landlock: Improve kernel-doc "Return:" section consistency
  landlock: Add missing kernel-doc "Return:" sections
  selftests/landlock: Fix format warning for __u64 in net_test
  selftests/landlock: Skip stale records in audit_match_record()
  selftests/landlock: Drain stale audit records on init
  selftests/landlock: Fix socket file descriptor leaks in audit helpers
  ...
2026-04-13 15:42:19 -07:00
Linus Torvalds
ef3da345cc Merge tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
 "Features:
   - coredump: add tracepoint for coredump events
   - fs: hide file and bfile caches behind runtime const machinery

  Fixes:
   - fix architecture-specific compat_ftruncate64 implementations
   - dcache: Limit the minimal number of bucket to two
   - fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START
   - fs/mbcache: cancel shrink work before destroying the cache
   - dcache: permit dynamic_dname()s up to NAME_MAX

  Cleanups:
   - remove or unexport unused fs_context infrastructure
   - trivial ->setattr cleanups
   - selftests/filesystems: Assume that TIOCGPTPEER is defined
   - writeback: fix kernel-doc function name mismatch for wb_put_many()
   - autofs: replace manual symlink buffer allocation in autofs_dir_symlink
   - init/initramfs.c: trivial fix: FSM -> Finite-state machine
   - fs: remove stale and duplicate forward declarations
   - readdir: Introduce dirent_size()
   - fs: Replace user_access_{begin/end} by scoped user access
   - kernel: acct: fix duplicate word in comment
   - fs: write a better comment in step_into() concerning .mnt assignment
   - fs: attr: fix comment formatting and spelling issues"

* tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (28 commits)
  dcache: permit dynamic_dname()s up to NAME_MAX
  fs: attr: fix comment formatting and spelling issues
  fs: hide file and bfile caches behind runtime const machinery
  fs: write a better comment in step_into() concerning .mnt assignment
  proc: rename proc_notify_change to proc_setattr
  proc: rename proc_setattr to proc_nochmod_setattr
  affs: rename affs_notify_change to affs_setattr
  adfs: rename adfs_notify_change to adfs_setattr
  hfs: update comments on hfs_inode_setattr
  kernel: acct: fix duplicate word in comment
  fs: Replace user_access_{begin/end} by scoped user access
  readdir: Introduce dirent_size()
  coredump: add tracepoint for coredump events
  fs: remove do_sys_truncate
  fs: pass on FTRUNCATE_* flags to do_truncate
  fs: fix archiecture-specific compat_ftruncate64
  fs: remove stale and duplicate forward declarations
  init/initramfs.c: trivial fix: FSM -> Finite-state machine
  autofs: replace manual symlink buffer allocation in autofs_dir_symlink
  fs/mbcache: cancel shrink work before destroying the cache
  ...
2026-04-13 14:20:11 -07:00
Linus Torvalds
07c3ef5822 Merge tag 'vfs-7.1-rc1.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull clone and pidfs updates from Christian Brauner:
 "Add three new clone3() flags for pidfd-based process lifecycle
  management.

  CLONE_AUTOREAP:

     CLONE_AUTOREAP makes a child process auto-reap on exit without ever
     becoming a zombie. This is a per-process property in contrast to
     the existing auto-reap mechanism via SA_NOCLDWAIT or SIG_IGN for
     SIGCHLD which applies to all children of a given parent.

     Currently the only way to automatically reap children is to set
     SA_NOCLDWAIT or SIG_IGN on SIGCHLD. This is a parent-scoped
     property affecting all children which makes it unsuitable for
     libraries or applications that need selective auto-reaping of
     specific children while still being able to wait() on others.

     CLONE_AUTOREAP stores an autoreap flag in the child's
     signal_struct. When the child exits do_notify_parent() checks this
     flag and causes exit_notify() to transition the task directly to
     EXIT_DEAD. Since the flag lives on the child it survives
     reparenting: if the original parent exits and the child is
     reparented to a subreaper or init the child still auto-reaps when
     it eventually exits. This is cleaner than forcing the subreaper to
     get SIGCHLD and then reaping it. If the parent doesn't care the
     subreaper won't care. If there's a subreaper that would care it
     would be easy enough to add a prctl() that either just turns back
     on SIGCHLD and turns off auto-reaping or a prctl() that just
     notifies the subreaper whenever a child is reparented to it.

     CLONE_AUTOREAP can be combined with CLONE_PIDFD to allow the parent
     to monitor the child's exit via poll() and retrieve exit status via
     PIDFD_GET_INFO. Without CLONE_PIDFD it provides a fire-and-forget
     pattern. No exit signal is delivered so exit_signal must be zero.
     CLONE_THREAD and CLONE_PARENT are rejected: CLONE_THREAD because
     autoreap is a process-level property, and CLONE_PARENT because an
     autoreap child reparented via CLONE_PARENT could become an
     invisible zombie under a parent that never calls wait().

     The flag is not inherited by the autoreap process's own children.
     Each child that should be autoreaped must be explicitly created
     with CLONE_AUTOREAP.

  CLONE_NNP:

     CLONE_NNP sets no_new_privs on the child at clone time. Unlike
     prctl(PR_SET_NO_NEW_PRIVS) which a process sets on itself,
     CLONE_NNP allows the parent to impose no_new_privs on the child at
     creation without affecting the parent's own privileges.
     CLONE_THREAD is rejected because threads share credentials.
     CLONE_NNP is useful on its own for any spawn-and-sandbox pattern
     but was specifically introduced to enable unprivileged usage of
     CLONE_PIDFD_AUTOKILL.

  CLONE_PIDFD_AUTOKILL:

     This flag ties a child's lifetime to the pidfd returned from
     clone3(). When the last reference to the struct file created by
     clone3() is closed the kernel sends SIGKILL to the child. A pidfd
     obtained via pidfd_open() for the same process does not keep the
     child alive and does not trigger autokill - only the specific
     struct file from clone3() has this property. This is useful for
     container runtimes, service managers, and sandboxed subprocess
     execution - any scenario where the child must die if the parent
     crashes or abandons the pidfd or just wants a throwaway helper
     process.

     CLONE_PIDFD_AUTOKILL requires both CLONE_PIDFD and CLONE_AUTOREAP.
     It requires CLONE_PIDFD because the whole point is tying the
     child's lifetime to the pidfd. It requires CLONE_AUTOREAP because a
     killed child with no one to reap it would become a zombie - the
     primary use case is the parent crashing or abandoning the pidfd so
     no one is around to call waitpid(). CLONE_THREAD is rejected
     because autokill targets a process not a thread.

     If CLONE_NNP is specified together with CLONE_PIDFD_AUTOKILL an
     unprivileged user may spawn a process that is autokilled. The child
     cannot escalate privileges via setuid/setgid exec after being
     spawned. If CLONE_PIDFD_AUTOKILL is specified without CLONE_NNP the
     caller must have have CAP_SYS_ADMIN in its user namespace"

* tag 'vfs-7.1-rc1.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  selftests: check pidfd_info->coredump_code correctness
  pidfds: add coredump_code field to pidfd_info
  kselftest/coredump: reintroduce null pointer dereference
  selftests/pidfd: add CLONE_PIDFD_AUTOKILL tests
  selftests/pidfd: add CLONE_NNP tests
  selftests/pidfd: add CLONE_AUTOREAP tests
  pidfd: add CLONE_PIDFD_AUTOKILL
  clone: add CLONE_NNP
  clone: add CLONE_AUTOREAP
2026-04-13 13:27:11 -07:00
Linus Torvalds
c8db08110c Merge tag 'vfs-7.1-rc1.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs xattr updates from Christian Brauner:
 "This reworks the simple_xattr infrastructure and adds support for
  user.* extended attributes on sockets.

  The simple_xattr subsystem currently uses an rbtree protected by a
  reader-writer spinlock. This series replaces the rbtree with an
  rhashtable giving O(1) average-case lookup with RCU-based lockless
  reads. This sped up concurrent access patterns on tmpfs quite a bit
  and it's an overall easy enough conversion to do and gets rid or
  rwlock_t.

  The conversion is done incrementally: a new rhashtable path is added
  alongside the existing rbtree, consumers are migrated one at a time
  (shmem, kernfs, pidfs), and then the rbtree code is removed. All three
  consumers switch from embedded structs to pointer-based lazy
  allocation so the rhashtable overhead is only paid for inodes that
  actually use xattrs.

  With this infrastructure in place the series adds support for user.*
  xattrs on sockets. Path-based AF_UNIX sockets inherit xattr support
  from the underlying filesystem (e.g. tmpfs) but sockets in sockfs -
  that is everything created via socket() including abstract namespace
  AF_UNIX sockets - had no xattr support at all.

  The xattr_permission() checks are reworked to allow user.* xattrs on
  S_IFSOCK inodes. Sockfs sockets get per-inode limits of 128 xattrs and
  128KB total value size matching the limits already in use for kernfs.

  The practical motivation comes from several directions. systemd and
  GNOME are expanding their use of Varlink as an IPC mechanism.

  For D-Bus there are tools like dbus-monitor that can observe IPC
  traffic across the system but this only works because D-Bus has a
  central broker.

  For Varlink there is no broker and there is currently no way to
  identify which sockets speak Varlink. With user.* xattrs on sockets a
  service can label its socket with the IPC protocol it speaks (e.g.,
  user.varlink=1) and an eBPF program can then selectively capture
  traffic on those sockets. Enumerating bound sockets via netlink
  combined with these xattr labels gives a way to discover all Varlink
  IPC entrypoints for debugging and introspection.

  Similarly, systemd-journald wants to use xattrs on the /dev/log socket
  for protocol negotiation to indicate whether RFC 5424 structured
  syslog is supported or whether only the legacy RFC 3164 format should
  be used.

  In containers these labels are particularly useful as high-privilege
  or more complicated solutions for socket identification aren't
  available.

  The series comes with comprehensive selftests covering path-based
  AF_UNIX sockets, sockfs socket operations, per-inode limit
  enforcement, and xattr operations across multiple address families
  (AF_INET, AF_INET6, AF_NETLINK, AF_PACKET)"

* tag 'vfs-7.1-rc1.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  selftests/xattr: test xattrs on various socket families
  selftests/xattr: sockfs socket xattr tests
  selftests/xattr: path-based AF_UNIX socket xattr tests
  xattr: support extended attributes on sockets
  xattr,net: support limited amount of extended attributes on sockfs sockets
  xattr: move user limits for xattrs to generic infra
  xattr: switch xattr_permission() to switch statement
  xattr: add xattr_permission_error()
  xattr: remove rbtree-based simple_xattr infrastructure
  pidfs: adapt to rhashtable-based simple_xattrs
  kernfs: adapt to rhashtable-based simple_xattrs with lazy allocation
  shmem: adapt to rhashtable-based simple_xattrs with lazy allocation
  xattr: add rhashtable-based simple_xattr infrastructure
  xattr: add rcu_head and rhash_head to struct simple_xattr
2026-04-13 10:10:28 -07:00
Cao Ruichuang
f8e0a5a174 selftests/ftrace: Quote check_requires comparisons
check_requires() compares requirement strings that can contain shell
pattern characters such as '[' and ']'. Under /bin/sh, the unquoted
test expressions can emit 'unexpected operator' warnings while parsing
README-backed requirements.

Quote the relevant comparisons and path checks so the helper handles
those patterns without spurious shell warnings.

Validated by rerunning fprobe_syntax_errors.tc and confirming the
previous '/bin/sh: unexpected operator' lines disappear from the
detailed ftracetest log.

Signed-off-by: Cao Ruichuang <create0818@163.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20260408043212.8063-1-create0818@163.com
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2026-04-13 11:05:39 -06:00
Ricardo B. Marlière
7e47389142 selftests: Preserve subtarget failures in all/install
Track failures explicitly in the top-level selftests all/install loops.

The current code multiplies `ret` by each sub-make exit status. For
example, with `TARGETS=net`, the implicit `net/lib` dependency runs after
`net`, so a failed `net` build can be followed by a successful `net/lib`
build and reset the final result to success.

Set `ret` to 1 on any non-zero sub-make exit code and keep it sticky, so
the top-level make returns failure when any selected selftest target
fails.

Signed-off-by: Ricardo B. Marlière <rbm@suse.com>
Link: https://lore.kernel.org/r/20260320-selftests-fixes-v1-5-79144f76be01@suse.com
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2026-04-13 11:05:39 -06:00
Ricardo B. Marlière
d6ea9f404b selftests/run_kselftest.sh: Allow choosing per-test log directory
The --per-test-log option currently hard-codes /tmp. However, the system
under test will most likely have tmpfs mounted there. Since it's not clear
which filenames the log files will have, the user should be able to specify
a persistent directory to store the logs. Keeping those logs are important
because the run_kselftest.sh runner will only yield KTAP output, trimming
information that is otherwise available through running individual tests
directly.

Allow --per-test-log to take an optional directory argument. Keep the
existing behaviour when the option is passed without an argument, but if
a directory is provided, create it if needed, reject non-directory paths
and non-writable directories, canonicalize it, and have runner.sh write
per-test logs there instead of /tmp.

This also makes relative paths safe by resolving them before the runner
changes into a collection directory.

Signed-off-by: Ricardo B. Marlière <rbm@suse.com>
Link: https://lore.kernel.org/r/20260320-selftests-fixes-v1-4-79144f76be01@suse.com
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2026-04-13 11:05:39 -06:00
Ricardo B. Marlière
a82e076f4a selftests/run_kselftest.sh: Resolve BASE_DIR with pwd -P
run_kselftest.sh only needs to canonicalize the directory containing the
script itself. Use shell-native path resolution for that by changing into
the directory and calling pwd -P.

This avoids depending on either realpath or readlink -f while still
producing a physical absolute path for BASE_DIR.

Signed-off-by: Ricardo B. Marlière <rbm@suse.com>
Link: https://lore.kernel.org/r/20260320-selftests-fixes-v1-3-79144f76be01@suse.com
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2026-04-13 11:05:39 -06:00
Linus Torvalds
28483203f7 Merge tag 'rcu.2026.03.31a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Joel Fernandes:
 "NOCB CPU management:

   - Consolidate rcu_nocb_cpu_offload() and rcu_nocb_cpu_deoffload() to
     reduce code duplication

   - Extract nocb_bypass_needs_flush() helper to reduce duplication in
     NOCB bypass path

  rcutorture/torture infrastructure:

   - Add NOCB01 config for RCU_LAZY torture testing

   - Add NOCB02 config for NOCB poll mode testing

   - Add TRIVIAL-PREEMPT config for textbook-style preemptible RCU
     torture

   - Test call_srcu() with preemption both disabled and enabled

   - Remove kvm-check-branches.sh in favor of kvm-series.sh

   - Make hangs more visible in torture.sh output

   - Add informative message for tests without a recheck file

   - Fix numeric test comparison in srcu_lockdep.sh

   - Use torture_shutdown_init() in refscale and rcuscale instead of
     open-coded shutdown functions

   - Fix modulo-zero error in torture_hrtimeout_ns().

  SRCU:

   - Fix SRCU read flavor macro comments

   - Fix s/they disables/they disable/ typo in srcu_read_unlock_fast()

  RCU Tasks:

   - Document that RCU Tasks Trace grace periods now imply RCU grace
     periods

   - Remove unnecessary smp_store_release() in cblist_init_generic()"

* tag 'rcu.2026.03.31a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux:
  rcutorture: Test call_srcu() with preemption disabled and not
  rcu: Add BOOTPARAM_RCU_STALL_PANIC Kconfig option
  torture: Avoid modulo-zero error in torture_hrtimeout_ns()
  rcu/nocb: Extract nocb_bypass_needs_flush() to reduce duplication
  rcu/nocb: Consolidate rcu_nocb_cpu_offload/deoffload functions
  rcu-tasks: Remove unnecessary smp_store_release() in cblist_init_generic()
  rcutorture: Add NOCB02 config for nocb poll mode testing
  rcutorture: Add NOCB01 config for RCU_LAZY torture testing
  rcu-tasks: Document that RCU Tasks Trace grace periods now imply RCU grace periods
  srcu: Fix s/they disables/they disable/ typo in srcu_read_unlock_fast()
  srcu: Fix SRCU read flavor macro comments
  rcuscale: Ditch rcu_scale_shutdown in favor of torture_shutdown_init()
  refscale: Ditch ref_scale_shutdown in favor of torture_shutdown_init()
  rcutorture: Fix numeric "test" comparison in srcu_lockdep.sh
  torture: Print informative message for test without recheck file
  torture: Make hangs more visible in torture.sh output
  kvm-check-branches.sh: Remove in favor of kvm-series.sh
  rcutorture: Add a textbook-style trivial preemptible RCU
2026-04-13 09:36:45 -07:00
Marc Harvey
d3870724eb selftests: net: Add tests for team driver decoupled tx and rx control
Use ping and tcpdump to verify that independent rx and tx enablement
of team driver member interfaces works as intended.

Signed-off-by: Marc Harvey <marcharvey@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260409-teaming-driver-internal-v7-10-f47e7589685d@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-04-13 15:09:49 +02:00
Marc Harvey
10407eebe8 selftests: net: Add test for enablement of ports with teamd
There are no tests that verify enablement and disablement of team driver
ports with teamd. This should work even with changes to the enablement
option, so it is important to test.

This test sets up an active-backup network configuration across two
network namespaces, and tries to send traffic while changing which
link is the active one.

Also increase the team test timeout to 300 seconds, because gracefully
killing teamd can take 30 seconds for each instance.

Signed-off-by: Marc Harvey <marcharvey@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260409-teaming-driver-internal-v7-5-f47e7589685d@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-04-13 15:09:49 +02:00