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DMA_HEAP_IOCTL_ALLOC allocates a dma-buf and installs an fd into the
caller's fd table via dma_buf_fd() -> fd_install() before
dma_heap_ioctl() copies the result back to userspace. If the trailing
copy_to_user() fails, userspace never learns the fd number, but the
fd (and the underlying dma-buf reference) are already visible to
other threads in the same process and are leaked for the lifetime of
the process.
The obvious "close it on the failure path" fix is unsafe: once
fd_install() has run, another thread can already dup() the fd, send
it via SCM_RIGHTS, or close() it and let its number be reused, so a
subsequent close_fd() from the ioctl path can operate on an unrelated
file. This was pointed out by Christian König on v1 [1].
Restructure the allocation path so that fd_install() is the last,
unfailable step of a successful ioctl:
1. heap->ops->allocate() creates the dma_buf.
2. get_unused_fd_flags() reserves an fd number in the caller's
fd table without publishing it, so
no other thread can observe it.
3. copy_to_user() delivers the fd number to userspace;
on failure the fd is returned with
put_unused_fd() and the dma_buf
reference is dropped with
dma_buf_put(), leaving no user-
visible state behind.
4. dma_buf_fd_install() publishes the fd and emits the
trace_dma_buf_fd tracepoint -- from
here on the ioctl cannot fail.
A new dma_buf_fd_install() helper is introduced in dma-buf.c to wrap
fd_install() together with the DMA_BUF_TRACE() call, preserving the
export tracing that dma_buf_fd() provides. dma_heap_ioctl_allocate()
is refactored to return the struct dma_buf * directly (returning
ERR_PTR on failure) so the caller holds the dmabuf reference across
steps 3 and 4.
The failure at step 3 is easily reachable from userspace: pass a
struct dma_heap_allocation_data that lives in a page whose protection
is flipped to PROT_READ between copy_from_user() and copy_to_user()
(e.g. via mprotect()). Before this change each such ioctl leaks one
dmabuf fd; after it, the fd table is unchanged on failure and only
/dev/dma_heap/<name> remains open.
No UAPI or heap-driver interface change.
[1] https://lore.kernel.org/dri-devel/175e98de-f414-47d7-81c1-c0fe0a8f7f62@amd.com/
Fixes: c02a81fba74f ("dma-buf: Add dma-buf heaps framework")
Cc: stable@vger.kernel.org
Reviewed-by: T.J. Mercier <tjmercier@google.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Baineng Shou <shoubaineng@gmail.com>
Link: https://lore.kernel.org/r/20260817050457.1005285-2-shoubaineng@gmail.com
Signed-off-by: Christian König <christian.koenig@amd.com>
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Revert commit 1b0866874833 ("locking: Switch to _irq_{disable,enable}()
variants in cleanup guards").
While the guards are properly nested, not all wrapped code is nice, as already
highlighted by that fair.c hunk.
Syzbot found another instance of this pattern in posix_timer_delete(), which
does spin_unlock_irq()+spin_lock_irq() inside scoped_guard(spinlock_irq).
Combined with this patch, that goes sideways most spectacular.
Undo this until we've developed stronger tools / debug for such issues.
Fixes: 1b0866874833 ("locking: Switch to _irq_{disable,enable}() variants in cleanup guards")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260824105523.GA4121620%40noisy.programming.kicks-ass.net
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Fix IWYU issues:
/tmp/next/build/include/linux/io_uring_types.h:56:32: error: 'ITER_DEST'
undeclared here (not in a function)
56 | IO_BUF_DEST = 1 << ITER_DEST,
| ^~~~~~~~~
/tmp/next/build/include/linux/io_uring_types.h:57:32: error: 'ITER_SOURCE'
undeclared here (not in a function)
57 | IO_BUF_SOURCE = 1 << ITER_SOURCE,
| ^~~~~~~~~~~
Fixes: 95961b72c57b2 ("io_uring/rsrc: rename and export IO_IMU_DEST / IO_IMU_SOURCE")
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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Add a drm_warn_ratelimited() macro to complement the existing
drm_err_ratelimited(), providing rate-limited logging at warning level
for drivers that need it.
Signed-off-by: Dawid Osuchowski <dawid.osuchowski@linux.intel.com>
Reviewed-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Link: https://patch.msgid.link/20260820104811.803146-2-dawid.osuchowski@linux.intel.com
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https://gitlab.freedesktop.org/drm/msm into drm-next
Changes for v7.3
Bindings:
- Added Shikra support
- Document a840, a704, a722
Core:
- Use drm_client buffers for fbdev emulation
- teardown fixes
- ARM32 DMA fixup
- Remove objects from evict list when re-validated
- Bunch of corner case and error path fixes
DPU:
- Dropped dev_pm_opp_set_rate(0) preventing burnout
- Fixed SSPP offsets of Kaanapali
DP:
- Dropped dev_pm_opp_set_rate(0) preventing burnout
- Cleaned up core code in preparation for MST support
- Fixed prepare() to let Pipewire continue in case of the unplugged cable
GPU:
- Add support for a704
- Add support for a722
HDMI:
- Simplifed register access
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rob Clark <rob.clark@oss.qualcomm.com>
Link: https://patch.msgid.link/CACSVV02Kp=J+w_RjEJbBbQnBYRb+SWdwMvVbCaAL70bq9EBagQ@mail.gmail.com
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git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Paul McKenney:
"Make expedited grace periods expedite normal RCU callbacks
Miscellaneous fixes:
- Improve diagnostic output with character task states
- Mark accesses to inform KCSAN of concurrency design
- Move from kmalloc() to kmalloc_obj()
- Documentation updates
- Improve handling of RCU deferred quiescent states
- Clean up unused function arguments and structure fields
- Reduce show_rcu_gp_kthreads() stack space
Tasks RCU updates:
- Clean up after SRCU re-implementation of Tasks Trace RCU
- Mark accesses to inform KCSAN of concurrency design
- Add ->lazy_timer status to diagnostic output
- Remove an unnecessary memory barrier
- Fix a data race, courtesy of KCSAN
- Documentation updates
- Convert cond_resched_tasks_rcu_qs() from macro to static inline
function
SRCU updates:
- Add Rust helpers for SRCU
- Avoid losing queued work at cleanup_srcu_struct() time
Torture-test updates:
- Preparation work for immediate RCU priority deboosting
- Test RCU readers from real interrupt handlers (as opposed to
softirq)
- Simplify code through use of cpumask_next_wrap()
- Improve diagnostic output with character task states
- Add rcutorture.nwriters parameter to allow lightweight stall
testing, and rcutorture.stall_only to make doing so easier
- Test an RCU Tasks Trace grace period implying an RCU grace period
- Make RCU Tasks Trace torturing track reader batches
- Fix a data race, courtesy of KCSAN
- Plug a shuffle_tmp_mask memory leak on kthread spawn failure"
* tag 'rcu.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (59 commits)
rcu: Add closing parenthesis in comment in rcu_read_unlock_strict()
rcutorture: Make {,s}rcu_read_delay() better handle forward-progress testing
rcutorture: Announce declining to forward-progress test
torture: Don't leak shuffle_tmp_mask when shuffler kthread fails to start
rcutorture: Use this_cpu_inc() for rcu_torture_count[] and rcu_torture_batch[]
rcutorture: Make RCU Tasks Trace track Reader Batches
rcutorture: Test RCU Tasks Trace GP implying RCU GP
rcutorture: Add a stall_only module parameter
rcutorture: Add nwriters module parameter
rcutorture: Use task_state_to_char() for task-state reporting
rcutorture: Use cpumask_next_wrap() in rcu_torture_preempt()
rcutorture: Test RCU readers from hardware interrupt handlers
rcutorture: Check for immediate deboosting at reader end
srcu: Queue sdp->work when the delay timer is successfully deleted
rcu-tasks: Convert cond_resched_tasks_rcu_qs() to static inline
rcu-tasks: Fix some comments for call_rcu_tasks() and call_rcu_tasks_rude()
rcu-tasks: Rename tasks_rcu_exit_srcu_stall_timer to tasks_rcu_exit_stall_timer
rcu: Mark interrupts-enabled accesses to rdp->cpu_no_qs.s
rcu: Reduce stack usage in show_rcu_gp_kthreads()
rcu: Mark accesses to ->rcu_urgent_qs and ->rcu_need_heavy_qs
...
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In Hyper-V versions prior to WS2016/Win10, Hyper-V synthetic timers
interrupt the guest by delivering a message that is initially handled
by the Linux VMBus driver. Starting with WS2016/Win10, Hyper-V can
deliver stimer interrupts directly to an assigned interrupt vector
without involving the VMBus driver. This is called "Direct Mode".
With the overall removal of Linux support for running on Hyper-V
hosts earlier than WS2016 and Windows 10, it's no longer necessary
to support the legacy message-based delivery. Remove that delivery
mechanism and always use Direct Mode. If for some reason, the
Hyper-V host does not enumerate Direct Mode, output an error
message but continue to run using the LAPIC timer instead of an
stimer.
With these changes, the VMBus driver no longer calls the stimer
interrupt service routine. This removal has a broader benefit in
unblocking the disentangling of VMBus code and stimer code, as
they should be independent of each other. The final disentangling
will come as a follow-on patch set.
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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Linux code for running as a Hyper-V guest includes special cases for
running on Hyper-V in WS2012/2012R2 and Windows 8/8.1. These versions
were initially released 14 years ago, and official support ended in 2023
(unless a customer has contracted for extended security updates). Given
the release of subsequent versions with improved functionality, there's
no need to continue to support the latest Linux kernels on these versions
of Hyper-V. If someone is running Linux on one of these older Hyper-V
versions and doesn't want to upgrade, they can continue to do so as
presumably they don't want upgrade the Linux version either.
Simplify Linux code by removing special cases for running on these
old versions of Hyper-V. Remove the negotiation of the VMBus protocol
versions for WS2012/Win8, and remove special case code based on those
VMBus protocol versions. Also update the balloon and snapshot drivers
to no longer negotiate driver-specific protocol versions for these
older Hyper-V versions, and remove any related special cases.
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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On CoCo VMs without confidential VMBus, the netvsc send and receive buffers
must be made host-visible by decrypting them. These buffers are vmalloc'ed,
but set_memory_decrypted()/encrypted() do not work on vmalloc'ed memory.
This use case is (so far) unique to netvsc, so solve it locally rather than
changing the set_memory() or allocation APIs.
Add vmbus_alloc_buffer()/vmbus_free_buffer() to the VMBus core. When the
guest's isolation model requires it, allocate the buffer as a list of
physically-contiguous chunks via alloc_pages_node(), starting at
MAX_PAGE_ORDER and falling back to smaller orders so the allocation still
succeeds under memory fragmentation. Each chunk is decrypted in place via
set_memory_decrypted() on its direct-map address, and the chunks are then
stitched into a single virtually-contiguous range with vmap(). Buffers that
do not need decryption keep using vzalloc().
To free the buffer, vmbus_free_buffer() calls vunmap() on the range then
re-encrypts and frees each chunk individually; any chunk that fails
re-encryption is leaked to prevent accidentally freeing decrypted memory.
This approach minimizes scattering of decrypted 4 KiB pages through the
kernel direct map and the resulting shattering of large page mappings.
Signed-off-by: Kameron Carr <kameroncarr@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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Add a new vmbus_establish_gpadl_caller_decrypted() for callers that want to
decrypt their own buffers. Add a new hv_gpadl_type,
HV_GPADL_BUFFER_DECRYPTED, to communicate the decryption status of the
buffer.
No functional change for existing callers.
Signed-off-by: Kameron Carr <kameroncarr@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux
Pull I3C updates from Alexandre Belloni:
"A new driver this cycle, for the AMD AXI I3C controller.
There are also new features such as IBI wakeup support, SETAASA device
discovery and ACPI support for the the DAA methods, meaning we can now
communicate with the SPD devices on DDR5 modules.
New driver:
- AMD AXI I3C master controller
Subsystem:
- I3C Common Command Code (CCC) handling improvements, especially
around GET CCCs
- SETAASA device discovery support
- ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
well as I2C devices on I3C bus
- IBI-based wakeup support
Drivers:
- dw: SETAASA support
- mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
controller support, PIO queue management support for HCI v1.2
- renesas: improve suspend to RAM support, add runtime PM support"
* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
i3c: dw: reduce do_daa time if there's no client
i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
i3c: dw: rename "pclk" to "apb" to match dt-binding
i3c: dw: make struct dw_i3c_cmd smaller
i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
i3c: renesas: Don't register devices when ENTDAA times out
i3c: master: dw-i3c-master: fix OD timing for first broadcast
i3c: mipi-i3c-hci: Advertise IBI wakeup capability
i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
i3c: master: Reject IBI requests from non-IBI-capable devices
i3c: master: Add helper to query bus wakeup requirements
i3c: master: Report wakeup events for IBIs
i3c: master: Support IBI-based wakeup capability
i3c: master: Fix potential UAF in i3c_device_match()
i3c: master: Fix potential UAF in i3c_device_uevent()
i3c: Make dev->desc locking assumptions explicit
i3c: master: Fix use-after-free of master->this
...
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git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI updates from Bjorn Helgaas:
"Resource management:
- Add hotplug reservation only once (not at each level of the
hierarchy) so bridge windows don't grow more than necessary (Ilpo
Järvinen)
Driver binding:
- Rework device matching so device ID lifetime only needs to cover
the probe path since dynamic IDs can be removed at any time (Gary
Guo)
Error handling:
- Update mappings of AER errors to agent & layer and log them for
each individual error when multiple errors detected (Lukas Wunner)
- Log Error Source only once, not twice in separate messages (Lukas
Wunner)
- Emit TLP Log only for unmasked errors (Lukas Wunner)
- Support Advisory Non-Fatal Errors (Lukas Wunner)
- Allow DPC on all Downstream Ports, not just Root Ports, when OS
controls AER (Darshit Shah)
ASPM:
- Program the same ASPM Control values for every function of
multi-function devices, as recommended by the PCIe spec (Krishna
Chaitanya Chundru)
- Avoid L0s for Realtek RTS525A, where it causes an AER interrupt
storm (Max Lee)
- Avoid ASPM L0s, L1, and L1 PM Substates based on 'aspm-no-l0s',
'aspm-no-l1' [1], and 'aspm-no-l1ss' DT properties (Krishna
Chaitanya Chundru)
Power management:
- Allow D3 for native hotplug-capable Root Ports on non-x86 platforms
(we avoid D3 for these ports on x86 because some old platforms
didn't validate it) (Manivannan Sadhasivam)
- Allow portdrv to claim Ports even if they don't support services
(AER, PME, DPC, hotplug, etc) so it can do power management (Brian
Norris)
Power control:
- Add support for PCIe WAKE# interrupt when described via DT (Krishna
Chaitanya Chundru)
- For the TC9563 PCIe switch:
- Take a reference on the I2C adapter to avoid uninterruptible
hang when unloading an I2C module while in-use (Johan Hovold)
- Update DT binding and driver to restrict Tx Amplitude, DFE and
N_FTS to USP, DSP1 and DSP2 (Manivannan Sadhasivam)
- Power off only external-facing ports (DSP1, DSP2), leaving USP
and DSP3 (aka VDSP) powered up (Manivannan Sadhasivam)
- Move integrated MAC Endpoint out of the list of internal ports
and configure it separately (Manivannan Sadhasivam)
Virtualization:
- Add ACS quirk for Pericom PI7C9X2G608 switches (Tim Harvey)
- Fix a long-standing bug in the Intel PCH Root Port MPC ACS quirk
that didn't update the intended INTEL_MPC_REG_IRBNCE bit because it
used a 16-bit config write when a 32-bit write was intended
(Mohamad Raizudeen)
Procfs:
- Avoid spurious runtime PM wakeup on config space accesses that are
outside config space and fail before reaching PCI (Krzysztof
Wilczyński)
- Warn on user-space writes to kernel-exclusive config space regions,
as we already do for sysfs (Krzysztof Wilczyński)
- Check credentials of opener, not reader, for config space reads, as
we already do for sysfs (Krzysztof Wilczyński)
Sysfs:
- In pci_write_legacy_io(), avoid out-of-bounds reads from the user
buffer and fix incorrect ioport write data (1-byte writes on
little-endian powerpc, 2- and 4-byte writes on big-endian powerpc)
(Krzysztof Wilczyński)
- In pci_read_legacy_io(), fix incorrect ioport read data for 2- and
4-byte reads on big-endian powerpc (Krzysztof Wilczyński)
- Fix I/O port accessor argument order in Alpha pci_legacy_write()
(Krzysztof Wilczyński)
- Avoid spurious runtime PM wakeup on config space accesses that are
outside config space and fail before reaching PCI (Krzysztof
Wilczyński)
- Return -EINVAL, not -ENODEV, for mmap of I/O BAR that fails because
the arch doesn't support it, as we do for procfs (Krzysztof
Wilczyński)
- Check for LOCKDOWN_PCI_ACCESS for legacy_io and legacy_mem, as we
do for other config space accessors (Krzysztof Wilczyński)
Peer-to-peer DMA:
- Add Nvidia Vera Rubin to list of platforms that support P2PDMA
(Leon Romanovsky)
Endpoint framework:
- Check doorbell SUCCESS bit in pci_endpoint_test to avoid treating
some failures as successes (Niklas Cassel)
- Fail doorbell test when the trigger IRQ is missed (Niklas Cassel)
New native PCIe controller drivers:
- Add DT binding and driver for NVIDIA Tegra264 (Thierry Reding)
Native PCIe controllers:
- Use common wait time definitions for PCIe link monitoring instead
of defining driver-private duplicates (Thierry Reding)
Generic host bridge driver:
- Fix NULL pointer dereference that caused enumeration failures on
32-bit CAM systems (Steffen Persvold)
Amlogic Meson PCIe controller driver:
- Correct the PERST# GPIO state so it remains asserted until power
and REFCLK become stable to fix enumeration failure (Ronald
Claveau)
ASPEED PCIe controller driver:
- Switch to irq_domain_create_linear() so we can obsolete
irq_domain_add_linear() (Jiri Slaby)
Cadence PCIe controller driver:
- Add MODULE_DEVICE_TABLE to generate module aliases for OF-based
module autoloading (Pengpeng Hou)
- Add debugfs 'ltssm_status' file for LGA- and HPA-based Cadence
controllers (Hans Zhang)
- Support up to x4 (not x2) lanes for J200 (Takuma Fujiwara)
- Fix host/endpoint dependencies for cadence-plat driver to fix link
error when cadence-plat is built-in but the host or endpoint driver
is modular (Aksh Garg)
Freescale i.MX6 PCIe controller driver:
- Add imx6 intr/aer/pme interrupt lines for i.MX95 (Richard Zhu)
- Remove PERST# checking from pci_host_common_parse_port() so callers
can decide whether to fall back to legacy DT binding with PERST# in
the host bridge (Sherry Sun)
- Fix build issues when PCI_PWRCTRL_GENERIC or PCI_HOST_COMMON is a
module (Arnd Bergmann)
- Create pwrctrl devices only once by doing it from imx_pcie_probe()
instead of imx_pcie_host_init(), which is used during both probe
and resume (Sherry Sun)
- Use 'dw_pcie_rp->skip_pwrctrl_off' to avoid powering off devices
during suspend to preserve wakeup capability (Sherry Sun)
- Add runtime PM support for i.MX95 to allow dynamic power management
when the link is idle (Richard Zhu)
Intel VMD host bridge driver:
- Support device ID 0x28C1 and assume that BIOS has already
enumerated the hierarchy below VMD and stored bus range info for OS
to use (Nirmal Patel)
- Add support for VMCONFIG BUS_RESTRICT_CFG=3, which makes it
possible to enumerate downstream devices on Intel Arrow Lake-HX
systems and probably others (Ali Alaei)
- Pay attention to _OSC negotiation for VMD hierarchy only when
running on bare metal, not when running in a VM (Nirmal Patel)
- Add Nova Lake (NVL) and Dunlow (DNL) Device IDs (Szymon Durawa)
MediaTek PCIe controller driver:
- Add support for PCIe controller in EcoNet EN7528 and EN751221 SoCs
(Caleb James DeLisle)
MediaTek PCIe Gen3 controller driver:
- Add mediatek-gen3 'memory-region' for restricted DMA buffer
(Chen-Yu Tsai)
NVIDIA Tegra264 PCIe controller driver:
- Distinguish Tegra264 C0 PCIe controller for internal GPU from C1-C5
controllers so the unit address matches the first 'reg' entry
(Thierry Reding)
- Add Tegra264 Root Port stanzas to prepare for generic WAKE#
handling (Thierry Reding)
Qualcomm PCIe controller driver:
- Add IPQ9650 compatible with global interrupt (Kathiravan
Thirumoorthy)
- Add IPQ5210 compatible with IPQ9574 fallback (Varadarajan
Narayanan)
- Add DT binding and driver support for Hawi SoC (Matthew Leung)
- Skip PERST# GPIOs provided by downstream PCIe devices, which should
be handled by drivers of those devices (Manivannan Sadhasivam)
- Stop advertising Attention Button Present (no Qcom SoCs support
Attention Buttons) so pciehp can use Presence Detect Changed events
(Qiang Yu)
Renesas R-Car PCIe controller driver:
- Add rcar-gen4-pci-host optional 'msi-parent' for GIT ITS (Marek
Vasut)
- When MSI is enabled but iMSI-RX is not used, configure AXIINTC to
allow GIT ITS to handle MSI (Marek Vasut)
- Refactor GIC600 implementation to make it easier to add platforms
that only support 32-bit addressing (Marek Vasut)
- Add Renesas R-Car Gen4 S4/V4H/V4M to the list of GIC600
integrations that only support 32-bit addressing (Marek Vasut)
Renesas RZ/G3S PCIe controller driver:
- Add DT binding and driver support for RZ/V2H(P) SoC, which contains
two PCIe controllers, configured either as a single x4 link or two
independent x2 link controllers (Lad Prabhakar)
SpacemiT K1 PCIe controller driver:
- Add missing MODULE_DEVICE_TABLE() to generate module alias info for
OF-based module autoloading (Pengpeng Hou)
StarFive PCIe controller driver:
- Fix resource leaks on error paths in host_init() (Ali Tariq)
- Fix runtime PM handling and teardown ordering to avoid register
access while power or clocks are disabled (Ali Tariq)
- Check for runtime PM resume failure to avoid register access while
power or clocks are disabled (Ali Tariq)
Synopsys DesignWare PCIe controller driver:
- Add LECARC PMU IDs to the DWC RAS/DES VSEC list so it can take
advantage of the existing debugfs support for silicon debug, error
injection, and event counters (Brett Zhou)
- Factor pcie_valid_speed() and pci_bus_speed2lnkctl2() out of bwctrl
so they can be shared by the DWC core (Hans Zhang)
- Flush MSI writes from endpoint before unmapping the iATU, as we
already do for MSI-X writes (Niklas Cassel)
- Unmap MSI iATU window before mapping MSI-X window, to avoid a
subsequent MSI write using a disabled aperture and losing the
interrupt (Niklas Cassel)
- Change endpoint .pre_init() and .init() callbacks to return errors
and handle them (Marek Vasut)
UltraRISC PCIe controller driver:
- Add 'core', 'dbi', and 'aux' clocks to DT binding and manage them
in the driver (Jia Wang)
- Use module_platform_driver() since this may be built as a module,
though not removable because IRQs can't be safely disposed (Jia
Wang)
MicroSemi Switchtec management driver:
- Add Microchip PCI1008 device ID and include it in NTB DMA alias
quirk (Logan Gunthorpe)
Miscellaneous:
- Document how to write PCI Host Controller drivers (Manivannan
Sadhasivam)
- Fix typos in documentation (D'Orus Tsitera)
- Use %pe format specifier to print error pointers so we get symbolic
errname when available (Krzysztof Wilczyński)"
* tag 'pci-v7.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (124 commits)
PCI: vmd: Add Nova Lake (NVL) and Dunlow (DNL) Device IDs
PCI: tegra264: Add Tegra264 support
dt-bindings: PCI: tegra264: Switch to PCIe Root Port bindings
dt-bindings: PCI: tegra264: Strictly distinguish C0 from C1-C5
PCI/AER: Support Advisory Non-Fatal Errors
PCI: Fix 32-bit config write in Intel PCH Root Port MPC ACS quirk
PCI: dwc: Handle return value from endpoint .pre_init callback
PCI: dwc: Handle return value from endpoint .init callback
PCI: dwc: Add PCI ID for LECARC PCIe PMU
PCI/ASPM: Mask ASPM states based on Devicetree properties
PCI/ASPM: Disable/restore ASPM on every function for multi-function devices
Documentation: PCI: Document how to write PCI Host Controller drivers
PCI/ASPM: Use pcie_capability_clear_and_set_word() for ASPM disable/restore
PCI: Add support for PCIe WAKE# interrupt
PCI: Allow D3 for native hotplug-capable Root Ports on non-x86 platforms
dt-bindings: PCI: Correct white-space style
PCI/ASPM: Avoid L0s for Realtek RTS525A
PCI: ultrarisc: Use module_platform_driver()
PCI: ultrarisc: Get and enable DP1000 PCIe controller clocks
dt-bindings: PCI: ultrarisc: Add required DP1000 PCIe clocks
...
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syzbot reported KCSAN write-write races when two tasks concurrently
update the same map value. Both accesses reach the ordinary memcpy()
paths in bpf_obj_memcpy() through copy_map_value().
Unlocked in-place updates of published map values are intentionally not
serialized and may produce torn values. Callers requiring consistency
must provide synchronization appropriate for the map type.
bpf_long_memcpy() already annotates the same behavior for long-aligned
copies.
Annotate the ordinary memcpy() sites in bpf_obj_memcpy() with
data_race(), matching bpf_long_memcpy(). This documents the existing
concurrency semantics and suppresses KCSAN reports for these intentional
races without changing synchronization or map update behavior.
Reported-by: syzbot+44044637ef892e79ca2b@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=44044637ef892e79ca2b
Signed-off-by: Quanye Yang <quanyeyang@proton.me>
Link: https://lore.kernel.org/bpf/20260822-bpf-kcsan-obj-memcpy-v3-1-4227b2edd8b4@proton.me
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc architecture updates from Helge Deller:
- Drop PER_HPUX personality from UAPI headers
- Infinite loop fix when parsing IRQ value in eisa code
- Switch to use asm-generic/serial.h
- Prevent possible unaligned asm code in head.S
* tag 'parisc-for-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: eisa: Fix infinite loop when parsing invalid IRQ value
parisc: Fix alignment of asm statements in head.S
parisc: eisa_eeprom: Add missing MODULE_DESCRIPTION()
parisc: Use asm-generic/serial.h
parisc: sba_iommu: Remove dead DEBUG_DMB_TRAP code
UAPI: Drop PER_HPUX personality
parisc: superio: Spelling s/Peterson/Petersen/
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Vasily Gorbik:
- Add a cpuidle driver with polling and enabled wait states using the
existing CPU idle infrastructure and idle governor to improve latency
for frequent sleep/wakeup cycles. Remove the obsolete tick delay
heuristic and generic arch_needs_cpu() hook. Add the corresponding
driver entry to MAINTAINERS
- Add kCFI support using the generic support provided by Clang
- Enable Clang CONTEXT_ANALYSIS for various architecture code and for
char, PCI, CIO and virtio drivers. Add required lock annotations,
exclude unsupported mm helpers and remove conditional PCI locking
- Fix secure storage access exception handling and reintroduce
DCACHE_WORD_ACCESS previously removed as a workaround
- Fix cpum_cf perf crashes when CPUs are brought online while per-task
events are active. Allocate and remove per-CPU counter data from CPU
hotplug callbacks
- Fix a deadlock when an s390dbf debug area is unregistered while one
of its debugfs files is being written to
- Fix MVIY_PERCPU() with binutils older than 2.39, where an assembler
macro silently omitted an instruction needed to repair interrupted
operations after CPU migration
- Remove/replace cond_resched() calls which are no-ops with the
supported s390 preemption models
- Fix AP queue depth and maximum message length decoding according to
the architecture. Current hardware is not affected, but future
hardware could report values which were handled incorrectly
- Reflect the configured CPU state in cpu_enabled_mask so deconfigured
CPUs are not presented as available for onlining
- Restore the vDSO GNU_EH_FRAME program header which was lost when the
build switched to direct linker invocation, and mark it read-only
- Add SCLP action qualifiers used by Spyre for card initialization,
recoverable error and telemetry reporting
- Move KMSAN interrupt flag helpers out of line to fix
-Wstatic-in-inline build warnings
- Use level-specific page table entry accessors for hugetlb entries and
ptep_get() when accessing crashed kernel memory in kdump
- Make forced AP bus rescans killable so that a user process blocked
behind an ongoing scan can still be terminated with SIGKILL
- Rework pkey ioctl error paths to remove duplicated cleanup code and
avoid freeing error pointers
- Allow the protected guest SWIOTLB buffer to be allocated outside the
first 2GB. Also enable dynamic SWIOTLB growth and the coherent atomic
pool fallback to improve I/O behavior when the initial pool is
exhausted
- Add program check statistics and spinlock contention tracepoints.
Increase the lockdep chain capacity to keep lockdep enabled for
complex code paths such as btrfs
- Simplify IPL, trap and syscall code and remove the obsolete
unistd_32.h generation entry
* tag 's390-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (59 commits)
s390/percpu: Fix MVIY_PERCPU() with older binutils
s390/debug: Fix deadlock during unregister
s390/cpum_cf: Handle CPU hotplug via prepare/dead callbacks
s390: Enable CONTEXT_ANALYSIS for various directories
s390/mm: Add __context_unsafe() attribute to gmap helper functions
s390/mm: Add __context_unsafe() attribute to do_secure_storage_access()
s390/sysinfo: Add context analysis attributes
s390/irqflags: Add out-of-line definitions of arch_local_irq_*() for KMSAN
s390/virtio: Enable CONTEXT_ANALYSIS
s390/cio: Enable CONTEXT_ANALYSIS
s390/vfio_ccw: Add __must_hold() attribute to vfio_ccw_sch_quiesce()
s390/pci: Enable CONTEXT_ANALYSIS
s390/pci: Rework __zpci_event_availability() to remove conditional locking
s390/pci: Rework __zpci_event_error() to remove conditional locking
s390/char: Enable CONTEXT_ANALYSIS
s390/con3215: Add __must_hold() attribute to raw3215_make_room()
s390/ap: Fix MAPML computation
s390/cio: Remove cond_resched() calls
s390: Remove cond_resched() calls
KVM: s390: Remove cond_resched() calls
...
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git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI updates from Ard Biesheuvel:
- Set a timeout for EFI runtime service completions, and declare the
firmware wedged if it is exceeded. Note that this requires special
handling in case the firmware does return after all
- Rate limit the efivarfs statfs() handler as the QueryVariableInfo()
runtime service can be costly
- Sanity check the size of struct properties_header on Mac/x86
- Tweak the prototype of efi_guid_to_str()
* tag 'efi-next-for-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efivarfs: Rate limit statfs() handler
efi: apple-properties: validate setup data header length
efi: make efi_guid_to_str() take a const GUID pointer
efi/runtime-wrappers: retire the worker if a wedged call ever returns
efi/runtime-wrappers: honour EFI_RUNTIME_SERVICES in the non-blocking paths
efi/runtime-wrappers: bound the wait for EFI runtime service calls
efi/runtime-wrappers: check EFI_RUNTIME_SERVICES before using efi_rts_work
efi/runtime-wrappers: handle queue_work() failure with goto exit
efi/runtime-wrappers: factor out efi_rts_park_worker()
efi: fix stale reference to efi_recover_from_page_fault()
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git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux
Pull more liveupdate updates from Mike Rapoport:
"Make boot time huge page allocation work nicely with kexec handover.
Today allocation of gigantic pages in HugeTLB cannot work reliably
with kexec handover (KHO):
- HugeTLB allocates gigantic pages using memblock and autoscaling of
KHO scratch accounts for these allocations. When gigantic pages
occupy half of the memory of more, KHO fails to allocate its
scratch memory.
- After kexec handover, memblock allocations exclusively use KHO
scratch that is not supposed to contain preserved memory. This
essentially blocks preservation of HugeTLB with gigantic pages.
Extend early memory pools available for KHO kernel with areas that are
guaranteed not to contain preserved memory"
* tag 'liveupdate-v7.3-rc1-20260823' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux: (21 commits)
kho: exclude hugetlb memory from scratch size calculation
memblock: add memblock_reserved_hugetlb_size()
memblock: make HugeTLB bootmem allocation work with KHO
memblock: always include KHO headers
kho: extend scratch
mm/mm_init: don't rely on memblock to get KHO scratch migratetype
kho: initialize preserved memory map radix tree earlier
kho: initialize kho_scratch pointer earlier in boot
kho: expose kho_scratch_overlap() to kexec_handover.h
kho: add kho_radix_init_tree()
kho: allow destroying KHO radix tree
kho: allow early-boot usage of the KHO radix tree
kho: add data argument to radix walk callback
kho: add callback for table pages
kho: add a struct for radix callbacks
kho: move all memory retrieval logic to kho_mem_retrieve()
kho: store incoming radix tree in kho_in
kho: disallow wide keys in radix tree
kho: make radix max key width more obvious
kho: generalize radix tree APIs
...
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git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull mtd updates from Miquel Raynal:
"Raw NAND changes:
- Sunxi: Support added for the H616 compatible
- Qcom: Support added for the MDM9607 compatible
- Support for the Toshiba TC58NVG1S3H part
- GPMI: New debugfs entry to expose the chip geometry
- PL353: Timing updates and software ECC support have been fixed
SPI NAND changes:
- fmsh: Support added for FM25G{01,02}B chips
- HeYangTek: Support added for HYF1GQ4UDACAE
Aside from these main changes, there is a high load of misc fixes and
hardening changes, and exceptionally no SPI NOR change"
* tag 'mtd/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (30 commits)
mtd: rawnand: sunxi: fix H6/H616 controller timings
mtd: rawnand: sunxi: describe tADL and tWHR delays
mtd: rawnand: sunxi: group controller delay tables
mtd: maps: remove dead select of MTD_CFI_BE_BYTE_SWAP
mtd: rawnand: gpmi: add debugfs entry for BCH geometry
mtd: rawnand: validate ONFI extended parameter page sections
mtd: rawnand: sunxi: add H616 MBUS DMA support
mtd: spinand: fmsh: fix FM25G01B/FM25G02B Quad I/O read dummy cycles
mtd: part: reject MTDPART_OFS_RETAIN in mtd_add_partition()
mtd: mpc5121_nfc: use platform for irq and ioremap
mtd: mtdoops: free page bitmap when the backing MTD is removed
mtd: mtdswap: Avoid freeing registered blktrans device twice
mtd: afs: validate v2 image info bounds
mtd: intel-dg: Fix runtime PM error path in probe
mtd: nand-omap2: Move omap_nand_ids[] to raw nand driver
mtd: rawnand: add Toshiba TC58NVG1S3H
mtd: nand: realtek-ecc: add missing MODULE_DEVICE_TABLE()
mtd: rawnand: qcom: Add MDM9607 compatible
mtd: rawnand: qcom: Make has_onfi_read_op separate from qpic_version2
mtd: rawnand: qcom: Make "aon" clock optional
...
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- "ocfs2/dlm: bound peer-controlled lengths in the o2dlm" (Bryam
Vargas)
Validate and bound all input lengths and count fields in the o2dlm
migration and recovery receive handlers to prevent memory corruption
and kernel panics from malformed cluster messages
- "ocfs2: validate xattr entry bounds" (Cen Zhang)
Validate OCFS2 extended attribute entry name and value bounds during
metadata reads to prevent out-of-range memory accesses during
retrieval or listing operations.
- "taskstats: fix cgroupstats invalid fd handling and add selftests"
(Yiyang Chen)
Return -EBADF when cgroupstats receives an invalid file descriptor to
prevent caller hangs and misleading success ACKs. Add a kselftest to
validate valid cgroup v1 queries and verify proper error handling
across different Netlink flag combinations.
- "misc lib/raid/ improvements v2" (Christoph Hellwig)
Improve benchmark-based algorithm selection for the XOR and RAID6
libraries, add KUnit benchmark tests, and cleanup minor
implementation details.
- "ocfs2: cluster: o2hb_region_pin() fixes" (Joseph Qi)
Fix sleeping-in-atomic, lock order inversion and error-path cleanup
bugs in o2hb_region_pin() by releasing o2hb_live_lock across sleeping
configfs_depend_item() calls and using unlocked variants from
callback context. Ensure failed pin attempts properly decrement user
counts and unpin partially initialized heartbeat regions to prevent
memory leaks and unprotected states.
- "lib/ucs2_string.c: fix out-of-bounds read in ucs2_strnlen()"
(Vincent Mailhol)
Fix an off-by-one which could cause an out-of-bounds read.
- "ocfs2: harden heartbeat teardown races" (Cen Zhang)
Fix two OCFS2 heartbeat/o2net teardown races found by KASAN.
- "taskstats: tidy up the cpumask command path" *Bradley Morgan)
make two small cleanups in kernel/taskstats.c.
- "ocfs2: validate active orphan slots during inode read" (ZhengYuan
Huang)
Validate active ordinary and append-DIO orphan slots read from OCFS2
dinodes at the metadata boundary to prevent corrupted slot indices
from causing out-of-bounds array accesses.
- "ocfs2: bound-check both readdir re-validation scans" (Zhan Xusheng)
Enforce strict boundary checks on directory entry record lengths and
offset calculations during OCFS2 directory re-scans to prevent
out-of-bounds memory reads and directory position corruption.
* tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (95 commits)
mailmap: fix bouncing address for Taniya Das
ocfs2: bound-check dir entries in the inline-data re-validation scan
ocfs2: bound-check dir entries in the readdir re-validation scan
squashfs: avoid thundering-herd cache wakeups
prctl: fix PR_SET_MM_AUXV losing the forced AT_NULL terminator
mailmap: update email address for Linfeng Sun
lib/interval_tree: fix allocation warning messages
checkpatch: add NOKPROBE_SYMBOL to the whitelist of lines that can occur immediately after functions
Squashfs: check block offset is not negative
signal: factor out the kernel reserved si_code check
ocfs2: fix readdir position truncation on 32-bit kernels
ocfs2: fix cached cluster count after suballocator reclaim
ocfs2: fix circular locking dependency in ocfs2_init_acl()
ocfs2: validate DIO orphan slot during inode read
ocfs2: validate orphan slot during inode read
selftests/prctl: fix non-anonymous VMA mapping in set-anon-vma-name test
MAINTAINERS: add IRC and patchwork for LTP
include/linux/list.h: mark list_add and __list_add as __always_inline
tools/mm: prevent page_owner_sort from truncating input
hung_task: update DETECT_HUNG_TASK_BLOCKER Kconfig help
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
- Add missing cpus_read_lock locking to rebuild_sched_domains()
(Sebastian Andrzej Siewior)
- Fix division by zero bug in tg_cpus() that can be triggered with
empty cpusets (Jake Steinman)
* tag 'sched-urgent-2026-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Floor tg_cpus() at 1
sched/topology: Add a cpus_read_lock to rebuild_sched_domains()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex fixes from Ingo Molnar:
- Enforce that the private futex owner shares the mm when attaching
(Kyle Zeng, Thomas Gleixner)
- Fix race on the initial mm->futex.phash.ref allocation (Hyunwoo Kim)
- Fix might_sleep() warning in futex_pivot_pending() (Peter Zijlstra)
* tag 'locking-urgent-2026-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Fix might_sleep() warning in futex_pivot_pending()
futex: Fix race on the initial mm->futex.phash.ref allocation
futex: Clean up the redundant exit/exec functions
futex/pi: Plug private futex exec() race
futex: Sanitize and document task_struct::futex::state transitions
futex/pi: Reject cross-mm private futex owners
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irqchip driver fixes from Ingo Molnar:
- Fix potential loss of interrupt in the renesas-rzg2l irqchip driver
(Biju Das)
- Fix a series of mostly corner case & error handling bugs in the
gic-v5 irqchip driver (Lorenzo Pieralisi)
- Fix hardware probing on the ast2700-intc irqchip driver (Michael
Pesa)
- Fix endianness bug on the Realtek Interrupt Controller (Rustam
Adilov)
- Fix incorrect sleeping allocation in critical section in the
ast2700-intc irqchip driver (Ryan Chen)
- Fix two bugs in the GICv5 irqchip driver: clear IRQ affinity properly
on teardown, and fix IRQ serialization bug on disabling the IRQ
(Sascha Bischoff)
* tag 'irq-urgent-2026-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/irq-realtek-rtl: Use readl_be()/writel_be() instead of readl()/writel()
irqchip/gic-v5: Defer default SPI and LPI IAFFID programming
irqchip/gic-v5: Use logical cpu 0 irs_data for dynamic IST allocation
irqchip/gic-v5: Release IRS iomem region on driver init failure
irqchip/gic-v5: Fix gicv5_init_common() error paths
irqchip/gic-v5: Disable IRSes on probe failures
irqchip/gic-v5: Check for NULL LPI domain on domain teardown
irqchip/gic-v5: Check get_logical_index() return value in MADT IAFFID parsing
irqchip/gic-v5: Synchronize CPU interface disable
irqchip/gic-v5: Clear per-CPU IRS data on teardown
irqchip/ast2700-intc: Disable all interrupt merge banks on probe
irqchip/ast2700-intc: Avoid allocating in the irq_domain activate() callback
irqchip/renesas-rzg2l: Fix loss of interrupt
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git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode
Pull unicode updates from Gabriel Krisman Bertazi:
"Two minor fixes:
- Remove the normalization function that we no longer use (David Alan
Gilbert))
- Fix a parsing issue in the encoding version argument passed by
filesystems (me)"
* tag 'unicode-for-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode:
unicode: Properly reject invalid encoding version strings
utf8: Remove unused utf8_normalize
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tcp_select_initial_window() assumes that callers never pass an MSS
smaller than 1, but route-derived advmss values can violate that
assumption.
A too-small explicit RTAX_ADVMSS is one way to get there, but it is not
the only one. The same divide-by-zero can also be reached through the
"default advmss" path when RTAX_ADVMSS is left at 0 and the effective
advmss is later driven down by route MTU and min_adv_mss.
Introduce a tcp_dst_advmss() helper that clamps route advmss to
TCP_MIN_MSS before TCP consumes it, and use it in the TCP paths that
derive advmss from dst metrics. This keeps the effective MSS from
dropping to zero before tcp_select_initial_window() rounds the receive
window.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Reported-by: Vega <vega@nebusec.ai>
Signed-off-by: Yong Wang <edragain@163.com>
Signed-off-by: Ren Wei <weir@nebusec.ai>
Link: https://patch.msgid.link/251eaf8277fa7c66364c9815c5da01662d269181.1787074852.git.edragain@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/sergeh/linux
Pull capabilities update from Serge Hallyn:
"Just one trivial patch which corrects two comments to avoid kernel-doc
warnings"
* tag 'caps-pr-20260820' of git://git.kernel.org/pub/scm/linux/kernel/git/sergeh/linux:
capability: remove non-kernel-doc comments
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Under heavy workloads or during background GC/fallocate operations,
nat_tree_lock can experience high lock contention between background
readers (e.g. f2fs_get_node_info() in gc_data_segment) and writers
(e.g. flush_nat_entries, set_node_addr, shrinker).
[375067.327986][T13777] schedule+0x4c/0x114
[375067.327997][T13777] f2fs_get_node_info+0x438/0x5c4
[375067.328002][T13777] f2fs_get_inode_page+0x1e0/0x3f0
[375067.328013][T13777] f2fs_iget+0x88/0x1180
[375067.328024][T13777] f2fs_lookup+0x168/0x3a8
[375067.328035][T13777] path_openat+0xa28/0x1b04
[375067.328046][T13777] do_filp_open+0xac/0x130
[375067.328056][T13777] do_sys_openat2+0x140/0x21c
[375067.328066][T13777] __arm64_sys_openat+0x70/0x9c
[375067.330299][T13777] schedule+0x4c/0x114
[375067.330310][T13777] schedule_preempt_disabled+0x24/0x40
[375067.330321][T13777] rwsem_down_write_slowpath+0x3b4/0x9d0
[375067.330332][T13777] down_write+0x98/0x170
[375067.330343][T13777] set_node_addr+0x74/0x4b4
[375067.330354][T13777] f2fs_new_node_page+0xb0/0x280
[375067.330444][T13777] f2fs_new_inode_page+0x3c/0x64
[375067.330455][T13777] f2fs_init_inode_metadata+0x4c/0x47c
[375067.330461][T13777] f2fs_add_regular_entry+0x258/0x5b8
[375067.330471][T13777] f2fs_add_dentry+0x100/0x158
[375067.330476][T13777] f2fs_do_add_link+0x84/0x140
[375067.330487][T13777] f2fs_create+0xec/0x250
[375067.331759][T13777] schedule+0x4c/0x114
[375067.331770][T13777] f2fs_down_read+0x9c/0xc4
[375067.331781][T13777] f2fs_need_inode_block_update+0x20/0x10c
[375067.331792][T13777] f2fs_do_sync_file+0x478/0x830
[375067.331802][T13777] f2fs_sync_file+0x2c/0x40
This patch converts nat_tree_lock to use the f2fs_{down,up}_{read,write}_trace
infrastructure.
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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- Use common wait time definitions for PCIe link monitoring instead of
defining driver-private duplicates (Thierry Reding)
- Add LECARC PMU IDs to the DWC RAS/DES VSEC list so it can take advantage
of the existing debugfs support for silicon debug, error injection, and
event counters (Brett Zhou)
* pci/controller/misc:
PCI: dwc: Add PCI ID for LECARC PCIe PMU
PCI: Use standard wait times for PCIe link monitoring
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- Support device ID 0x28C1 and assume that BIOS has already enumerated the
hierarchy below VMD and stored bus range info for OS to use (Nirmal
Patel)
- Add support for VMCONFIG BUS_RESTRICT_CFG=3, which makes it possible to
enumerate downstream devices on Intel Arrow Lake-HX systems and probably
others (Ali Alaei)
- Observe _OSC negotiation for VMD hierarchy only when running on bare
metal, not when running in a VM (Nirmal Patel)
- Add Nova Lake (NVL) and Dunlow (DNL) Device IDs (Szymon Durawa)
* pci/controller/vmd:
PCI: vmd: Add Nova Lake (NVL) and Dunlow (DNL) Device IDs
PCI: vmd: Only copy root bridge _OSC control flags in bare metal OS
PCI: vmd: Handle BUS_RESTRICT_CFG value 3 for Arrow Lake-HX
PCI: vmd: Add feature to scan BIOS-enumerated devices
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- Fix NULL pointer dereference that caused enumeration failures on 32-bit
CAM systems (Steffen Persvold)
* pci/controller/host-generic:
PCI: host-generic: Fix NULL pointer dereference on 32-bit CAM systems
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* pci/controller/root-port-reset:
misc: pci_endpoint_test: Add AER error handlers
PCI: dw-rockchip: Implement .reset_root_port() and use for link down
PCI: qcom: Implement .reset_root_port() and use for link down
PCI: host-common: Add link down handling for Root Ports
PCI/ERR: Add support for resetting the Root Ports in a platform-specific way
PCI: dwc: ep: Clear MSI iATU mapping in dw_pcie_ep_cleanup()
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- Add support for PCIe WAKE# interrupt when described via DT (Krishna
Chaitanya Chundru)
* pci/wake:
PCI: Add support for PCIe WAKE# interrupt
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git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux
Pull module updates from Petr Pavlu:
- Remove unnecessary module::args. Nowadays, no parameter-handling code
points into the module::args buffer. The last user of module::args in
xtensa/simdisk is updated and the data is then removed
- Add Rust support for boolean parameters. This will initially be used
by the Rust null block driver
- Fix clearing the current charp parameter value when setting a new one
fails due to an allocation failure
- Improve the debugging code for kmod (request_module()) duplicates.
Fix a potential use-after-free when waiting on a duplicate request
and make several general improvements to the code
- Fix the symbol size returned when looking up a data symbol through
kallsyms
- Smaller fixes and cleanups
* tag 'modules-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux:
params: fix charp corruption on allocation failure
module: validate string table section types
module/dups: Clean up includes
module/dups: Use strcmp() to compare module names
module/dups: Use scope-based cleanup helpers
module/dups: Avoid unnecessary kmod_dup_req allocations
module/dups: Fix use-after-free in kmod_dup_req lifetime handling
module/dups: Inform duplicate requests about the result directly
rust: module_param: support bool parameters
rust: module_param: return value by copy from `value`
module: Remove unnecessary module::args
xtensa/simdisk: Avoid referring to module::args
module: Remove unused DISCARD_EH_FRAME definition from module.lds.S
module: procfs: use matching type for accumulator in module_total_size()
module: use strscpy() to copy module names in stats and dup tracking
params: fix path of /sys/module/XYZ/parameters/ in comment
module/kallsyms: fix nextval for data symbol lookup
|
|
Pull MIPS updates from Thomas Bogendoerfer:
- switch gpio code to use swnodes
- rework of TXX9 gpio code
- enable multi-vpe for econet
- cleanups and fixes
* tag 'mips_7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
mips: dts: econet: Describe dual-VPE 34Kc processor
mips: econet: add multi-vpe capability to EN751221
MIPS: ptrace: Fix syscall skipping via PTRACE_SYSCALL
mips: remove dead select
MIPS: BCM47XX: Convert buttons to software nodes
ssb: gpio: Add and register software node for GPIO controller
bcma: gpio: Add and register software node for GPIO controller
MIPS: ip22-gio: Drop #include of <linux/mod_devicetable.h>
MIPS: TXX9: Clean up txx9_iocled_init()
MIPS: TXX9: Convert gpio_txx9 to dynamic GPIO base allocation
MIPS: TXX9: Drop GPIOLIB_LEGACY select
MIPS: TXX9: Use GPIO lookup table for iocled LEDs
MIPS: TXX9: Reduce TXX9_IOCLED_MAXLEDS to 3
MIPS: TXX9: rbtx4927: Use GPIO lookup table for TXx9 LEDs
MIPS: TXX9: rbtx4927: Use GPIO lookup table for SIO DTR
MIPS: TXX9: Remove txx9_7segled_*() forward declarations
MIPS: TXX9: Remove tx4938_spi_init() and txx9_spi_init()
MIPS: kernel: proc: Use two seq_putc() calls in show_cpuinfo()
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git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux
Pull Landlock update from Mickaël Salaün:
"This improves observability with Landlock tracepoints support, which
required some refactoring for dedicated domain types and common
helpers shared with audit code.
A LANDLOCK_RESTRICT_SELF_NO_NEW_PRIVS flag is also added to improve
process-wide domain enforcement consistency.
Whiteout files are now correctly handled and tested, and a few other
fixes"
* tag 'landlock-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: (34 commits)
landlock: Document tracepoints
selftests/landlock: Add landlock_enforce_domain trace tests
selftests/landlock: Add scope and ptrace tracepoint tests
selftests/landlock: Add network tracepoint tests
selftests/landlock: Add filesystem tracepoint tests
selftests/landlock: Add trace event test infrastructure and tests
landlock: Add tracepoints for ptrace and scope denials
landlock: Add landlock_deny_access_fs and landlock_deny_access_net
landlock: Add tracepoints for rule checking
landlock: Add landlock_enforce_domain tracepoint
landlock: Add create_domain and free_domain tracepoints
landlock: Add landlock_add_rule_fs and landlock_add_rule_net tracepoints
landlock: Add create_ruleset and free_ruleset tracepoints
landlock: Consolidate access-right and scope names in a shared header
landlock: Decouple the per-denial logging decision from CONFIG_AUDIT
landlock: Split denial logging from audit into common framework
landlock: Split struct landlock_domain from struct landlock_ruleset
landlock: Move domain query functions to domain.c
landlock: Prepare ruleset and domain type split
samples/landlock: Add LANDLOCK_RESTRICT_SELF_NO_NEW_PRIVS to sampler
...
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git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
"Power-supply core:
- Add PbAc, NiZn, RAM, and ZnAr battery chemistry types
- Create LED triggers based on properties instead of device type
- Provide power_supply_get_system_batteries() for usage with USB-C
- Add registration init callback for race-free device setup
Power-supply drivers:
- new TI BQ25630 charger driver
- new SG Micro sgm41542 charger driver
- bq257xx: Add support for BQ25792
- max8903: add DC and USB input current-limit controls
- max17042_battery: Initialize MAX17055 from battery info
- sbs-battery: map newly introduced battery chemistries
- drop extra error messages for IRQ request failures
- lot's of driver removal race condition fixes
- misc small cleanups and fixes
Reset drivers:
- add MCF5441x RCM power-on reason driver
- misc small cleanups and fixes"
* tag 'for-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (115 commits)
power: supply: bq27xxx: bq27z561: fix invalid AverageEnergy address
power: supply: bq27xxx: bq28z610: fix invalid AverageEnergy address
power: supply: bq27xxx: bq27520g4: fix REG_TTES address
power: supply: max17040: synchronize work cancellation on suspend
power: supply: lp8727: fix use-after-free in lp8727_release_irq()
power: supply: bq256xx: drain usb_work before freeing the charger
power: supply: qcom_battmgr: fix battery chemistry strncmp length
power: supply: bd99954: Drop bad register fields
power: supply: bd71828: Do not hide errors
power: supply: bd71828: Drop duplicate power-supply property
power: supply: bd71828: Fix current direction
power: supply: bd71815: Fix temperature reading
power: supply: add stubs for notifier registration helpers
power: supply: ucs1002: fix use-after-free on remove
power: supply: lp8788-charger: fix use-after-free on remove
power: supply: ab8500_fg: fix use-after-free on remove
power: supply: bq24257: fix use-after-free on remove
power: supply: qcom_battmgr: fix use-after-free
power: supply: max17040: drop incorrect I2C functionality check
power: supply: charger-manager: register regulators before exposing sysfs
...
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Pull MMC updates from Ulf Hansson:
"MMC core:
- Reject invalid perdev_minors for the block device before division
- Document DT fixed-layout NVMEM provider support for eMMC cards
MMC host:
- Convert a couple of plain text DT bindings to the yaml format
- bcm2835: DMA mapping improvements
- cqhci: Fix sparse warnings for endian conversions
- dw_mmc: Stop and complete DMA also in busy state
- dw_mmc-rockchip: Add support for the RV1106 variant
- litex_mmc: Add dynamic bus width support
- moxart: Propagate error for DMA completion timeout
- pxamci: Remove PXA remnants for the PXA93x support
- rtsx_usb_sdmmc: Avoid USB I/O in runtime autosuspend
- rtsx_usb_sdmmc: Suppress false CD after init timeout
- sdhci_am654: Add Judith Mendez as maintainer
- sdhci-esdhc-mcf: Do not use readl()/writel() on ColdFire
- sdhci-msm: Extend the DT bindings for ICE
- sdhci-tegra: Add support for Tegra264/Tegra238 variants
- sunxi: Add support for the Allwinner A733 variant
- via-sdmmc: Clean up card detect work at remove and in probe error path"
* tag 'mmc-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (35 commits)
ARM: PXA: Fix build error for PXA93x
dt-bindings: mmc: sunxi: add compatible string for Allwinner A733 MMC0/1/2
dt-bindings: mmc: Document fixed-layout NVMEM provider support
mmc: sdhci-tegra: Add Tegra264 SoC data
dt-bindings: mmc: tegra: Document Tegra264 SDHCI
mmc: sdhci-tegra: Add Tegra238 SoC data
dt-bindings: mmc: tegra: Document Tegra238 SDHCI
mmc: omap_hsmmc: use platform_get_irq_optional for wake IRQ
mmc: via-sdmmc: cancel card-detect work on remove
mmc: via-sdmmc: stop card-detect handling on probe failure
mmc: moxart: use platform helpers for resource and IRQ
mmc: host: Remove redundant dev_err()/dev_err_probe()
mmc: bcm2835: DMA mapping improvements
mmc: dw_mmc: move declaration of dw_mci_pmops
dt-bindings: mmc: rockchip-dw-mshc: Add RV1106 compatible
mmc: rtsx_usb_sdmmc: suppress false CD after init timeout
misc: rtsx_usb: avoid USB I/O in runtime autosuspend
mmc: sdhci-of-dwcmshc: Log eMMC reset calls
mmc: block: reject invalid perdev_minors before division
mmc: sdhci-of-ma35d1: add missing MODULE_DEVICE_TABLE()
...
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Pull RDMA updates from Jason Gunthorpe:
"About the normal size, still a lot of AI bug fixes and so on, but some
interesting new functionality too:
- Assorted locking, bounds-checking, cleanup, and error-path fixes
across UCMA/CMA, bng_re, bnxt_re, cxgb4, EFA, ERDMA, HFI1, HNS,
ionic, iRDMA, mlx4/mlx5, RXE, SIW, SRP/SRPT, and iSER target.
- netlink report for max # of supported resources
- get_zeroed_page()/etc removal
- Robust udata for ionic
- Allow unique RDMA device names per network namespace
- Completion counters and v2 admit queue support for EFA
- UC QP support for MANA
- Completion timestamps for ionic
- Harden uverbs data validation and resource lifetime handling,
fixing several core use-after-free conditions.
- bnxt_re toggle-page ownership and lifetime bug fixes
- dmabuf SRQ support for mlx5"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (160 commits)
RDMA/ucma: Allow path records to exactly fit the output buffer
RDMA/uverbs: Guard legacy bundles without method_elm
RDMA/efa: Add support for 128B admin v2 SQ entry
RDMA/efa: Generalize the admin SQ
RDMA/efa: Decouple admin command payload from admin header
RDMA/rxe: Fix OOB in free_rd_atomic_resources()
RDMA/cma: Fix WARNING in res_to_rt
RDMA/cxgb4: Free debugfs on registration failure
RDMA/cxgb4: Cancel reg_work before freeing device on remove
RDMA/ucma: Lock the handler in ucma_set_ib_path()
RDMA/ucma: Lock the handler in ucma_write_cm_event()
RDMA/erdma: restrict the driver to little-endian systems
RDMA/ionic: Embed counter driver data in rdma_counter allocation
RDMA/ionic: Cap eq_count to the eth driver's interrupt vector budget
RDMA/siw: Fix use-after-free in siw_accept()
IB/isert: post the full-feature receive buffers after session registration
IB/isert: delay the final Login Response until the session is registered
RDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ
RDMA/erdma: Hold QP references for AE and CM processing
RDMA/erdma: Hold CQ references when processing EQ events
...
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Pull SCSI updates from James Bottomley:
"One new driver: leapraid (similar to mpi3mr but OK'd by Broadcom). The
usual suspects for driver updates (ufs, qla2xxx, smartpqi, zfcp, fnic,
ibmvfc) plus a few small core updates: a fix for an uninitialized sg
list pad bytes plus the removal of the dma mask check for max sectors.
The big update in the sd driver is mostly code refactoring for obscure
error leg handling"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (195 commits)
scsi: fnic: Fix built-in NVMe/FC build
scsi: fnic: Fix invalid comparison for error
scsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables()
scsi: zfcp: Enable CONTEXT_ANALYSIS
scsi: zfcp: Add __must_hold() attribute to zfcp_qdio_sbal_get()
scsi: fnic: Use GFP_ATOMIC for VLAN alloc under spinlock
scsi: storvsc: Support manual scans for all Hyper-V targets
scsi: sd: Fix sd_done() sense handling condition
scsi: sd: Fix special_vec mempool leak when scsi_alloc_sgtables() fails
scsi: sd: Fix error handling in sd_probe() after large pool creation failure
scsi: leapraid: Add driver documentation
scsi: leapraid: Add new SCSI driver
scsi: ufs: Add support for the aggregated read query opcode
scsi: ufs: Use unsigned types for the BSG query
scsi: ibmvfc: Fix spelling mistake "Deleteing" -> "Deleting"
scsi: qla2xxx: Update version to 12.00.00.2607b2
scsi: qla2xxx: Bound i2c->length in I2C bsg handlers
scsi: qla2xxx: Zero SFP DMA buffer in FRU/I2C bsg handlers
scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]
scsi: qla2xxx: Zero-init bsg stack buffers to avoid info leak
...
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Relax btf_distill_func_proto() to accept a by-value struct or union that
the R0:R2 convention added in earlier patches can carry:
- a struct or union larger than 8 and up to 16 bytes, returned in the
R0:R2 register pair, matching what LLVM emits for the BPF target;
- a struct or union up to 8 bytes, returned in R0 alone.
A >8 byte scalar (__int128) was already accepted and is unchanged.
Everything else stays rejected: a return type larger than 16 bytes, and any
type that __get_type_size() cannot return in registers at all (e.g. an
array), which it already reports as ret < 0.
btf_validate_return_type() is relaxed as well, so that it accepts a
by-value struct or union up to 16 bytes in addition to void and scalars.
With btf_distill_func_proto() and btf_validate_return_type() relaxed, the
verifier, JIT, precision-backtracking and live-register support from the
earlier patches becomes reachable: <=16 byte aggregate return values now
work end to end.
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://patch.msgid.link/20260819055314.3298664-1-yonghong.song@linux.dev
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
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LLVM 23 returns an __int128, or a struct/union larger than 8 bytes and no
larger than 16 bytes, in the BPF R0:R2 register pair. The previous patch
added the shared helpers describing that convention; wire up the JIT side
so that the second half of the return value actually lands in R2.
Placing the second return half into R2 is possible on any JIT, but it needs
architecture-specific JIT work. Rather than requiring every JIT to
implement it at once, add a bpf_jit_supports_kfunc_ret_reg_pair()
capability, defaulting to false in the generic core; an architecture opts
in once its JIT handles the R0:R2 pair, and the remaining ones are left for
future work. Only the x86-64, arm64 and riscv64 JITs opt in so far.
On arm64 and riscv64 the native second return register is already BPF R2
(x1 in bpf2a64[] and a1 in regmap[] respectively), so the upper half needs
no move at all, unlike x86-64's RDX->RSI. The lower half is covered by the
move into BPF R0 that those JITs already emit after every call, from x0
into x8 and from a0 into a5. This has been tested on x86-64 and arm64. The
riscv64 path is expected to work by the same register-mapping reasoning as
arm64 but has not been tested.
bpf_add_kfunc_call() also rejects a kfunc that is marked KF_FASTCALL and
returns more than 8 bytes. The bpf_fastcall contract implemented by
mark_fastcall_pattern_for_call() assumes a call clobbers R0 plus the
registers holding its arguments, so a return in the R0:R2 pair would
clobber an R2 the caller expects the fastcall pattern to preserve. Such
a kfunc is rejected with -EOPNOTSUPP as well.
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://patch.msgid.link/20260819055254.3295610-1-yonghong.song@linux.dev
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
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LLVM 23 added support for returning a value in two registers for an
__int128, or a struct/union whose size is greater than 8 but not more than
16 bytes: such a value comes back in the R0:R2 register pair, with R2
holding the upper half. See LLVM patches [1] and [2].
Later patches teach the JIT, live register analysis and the verifier itself
about that convention. They need to answer the same question: does this
subprogram return its value in a register pair? Add bpf_ret_reg_pair() up
front so it can be used in subsequent patches. It is answered from a
per-subprogram flag that bpf_compute_subprog_ret_regs() derives once from
the BTF prototype.
jit_requested only says that the JIT is enabled, not that it succeeded:
bpf_fixup_call_args() falls back to the interpreter when bpf_jit_subprogs()
fails with anything other than -EFAULT. So jit_required is still set once
the pair is modelled, which turns that fallback into a load failure rather
than a silent divergence from what was verified.
[1] https://github.com/llvm/llvm-project/pull/190894
[2] https://github.com/llvm/llvm-project/pull/206876
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://patch.msgid.link/20260819055249.3295283-1-yonghong.song@linux.dev
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
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BPF_F_CPU stores the target CPU ID in the upper 32 bits of the map
operation flags. bpf_map_check_op_flags() currently compares that ID
with num_possible_cpus(), which is the number of possible CPUs rather
than a bound on CPU IDs.
On an arm64 QEMU guest with a CPU device-tree hole, the possible CPU
mask was 0,2-3. A userspace program using raw bpf() syscalls creates
a BPF_MAP_TYPE_PERCPU_ARRAY and performs update and lookup operations
for each CPU by setting BPF_F_CPU and the CPU ID in the flags.
With the old check, CPU 1 is incorrectly accepted while valid CPU 3 is
rejected with -ERANGE. The CPU 1 update then reaches the per-CPU map
access path and triggers:
Unable to handle kernel paging request at virtual address ...
pc : __pi_memcpy_generic+0x5c/0x22c
lr : bpf_percpu_array_update+0x2dc/0x2e8
Call trace:
__pi_memcpy_generic
bpf_map_update_value
map_update_elem
__sys_bpf
Check the CPU ID against nr_cpu_ids and cpu_possible() instead. This
rejects CPU IDs outside the valid range and CPUs absent from the
possible mask, while allowing valid sparse CPU IDs.
Fixes: 2b421662c788 ("bpf: Introduce BPF_F_CPU and BPF_F_ALL_CPUS flags")
Signed-off-by: Hui Su <sh_def@163.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Leon Hwang <leon.hwang@linux.dev>
Link: https://lore.kernel.org/bpf/20260813160858.1042834-3-sh_def@163.com
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev updates from Helge Deller:
"The usual bunch of many small fixes in various fbdev drivers, but
more interestingly the Vodoo3/4/5 cards will now be initialized even
without PC BIOS support and vintage Atari computers gain more color
depths and console acceleration on SuperVidel's SuperBlitter chips.
New features:
- Allow Vodoo3/4/5 card to be initialized without PC-BIOS (Daniel
Palmer)
- Add support for SuperVidel's SuperBlitter (Miro Kropacek)
- Add further video bit depths (Miro Kropacek)
- Detect default graphics card for console output on sticon/parisc
(Helge Deller)
Fixes:
- kyro: Validate overlay viewport coordinates (Danila Chernetsov)
- platinumfb: add error checking for ioremap calls (BingKun Yue)
- ssd1307fb: damage callback fixes (Hui Su)
- maxine: fix 64-bit build error and code cleanups (Randy Dunlap)
- omapfb: panel-dsi-cm: initialize lock before registering display
(Runyu Xiao)
- core: Clamp total_size to smem_len in read/write functions
(Mingyu Wang)
- uvesafb, tdxfb: failure path cleanups (Myeonghun Pak)
- udlfb: validate DisplayLink vendor descriptor items before usage
(Pengpeng Hou)
Cleanups:
- Convert multiple drivers to managed PCI and ioremap API (Shixiong Ou)
- Remove redundant dev_err() from multiple drivers (Pan Chuang)
- omap2: do not copy isr table (Andreas Kemnade)
- pvr2fb: correct user pointer annotation and sentinel initializer
(Florian Fuchs)
- mb862xxfb: silence possibly unused functions (Helge Deller)
- au1100fb: drop unneeded semicolon (Julia Lawall)
- clps711x-fb: remove unreachable code (Karl Mehltretter)
- viafb: refactor strcpy call (Ajith P V)
- sstfb: add missing MODULE_DEVICE_TABLE() (Pengpeng Hou)
- mb862xx: replace dead Kconfig select with dependency (Julian Braha)
Documentation fixes:
- fonts: fixup font.h kernel-doc warnings (Randy Dunlap)"
* tag 'fbdev-for-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: (43 commits)
fbdev: atafb: Add support for SuperVidel's SuperBlitter
fbdev: atafb: Add support for further video bit depths on atafb:external
fbdev: atafb: Give atafb proper parent
fbdev: omapfb: panel-dsi-cm: initialize lock before registering display
fbdev: viafb: refactor strcpy and viafb_name
fbdev: platinumfb: add error checking for ioremap calls
fbdev: maxine: use MODULE_LICENSE() unconditionally
fbdev: maxine: fix maxinefb_init() return value
fbdev: maxine: fix 64-bit build error
fbdev: maxine: elide an unused function
fbdev: maxine: make functions static
fbdev: atyfb: Convert to managed PCI and ioremap API
fbdev: matrox: Convert to managed PCI and ioremap API
fbdev: savage: Convert to managed PCI and ioremap API
fbdev: nvidia: Convert to managed PCI and ioremap API
fbdev: aty128fb: Convert to managed PCI and ioremap API
fbdev: clps711x-fb: Remove unreachable unregister_framebuffer() call
fbdev: mb862xxfb: Silence possibly unused functions
sticon/parisc: Detect default STI graphics card for console output
fbdev: ssd1307fb: defer I2C transfers from damage callbacks
...
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Pull drm updates from Dave Airlie:
"Highlights:
- dmemcg eviction support is good for low VRAM things like Steam
Machine
- AMD adds gfx6-8 modifier support for older GPUs that enables a
bunch of wayland stuff
- i915/xe has some new hw support but also a lot of display
refactoring
Everything:
perf:
- export perf_allow_ APIs for xe
udmabuf:
- remove default size limit of 64MB
rust:
- i/o rework (signed tag from driver-core tree)
- add registration guard and registration data
- fix unbounded lifetimes in ioctl handler args
- fix a drm_dev_register race
- gem_shmem: add DmaResvGuard helper
- gpuvm: require send/sync for driver data
- implement send/sync for GpuVaAlloc and GpuVmBo
- add SmContext lifetime
- rename dma_handle to dma_address
- change pci_sriov_get_totalvfs return to unsigned int
core:
- create drm_of_get_panel_orientation
- send per-connector hotplug events
- add thunderbolt UBHR tunneling support
connector:
- add color format property
dmem:
- introduce a peak file
- accept one region per limit
- add dmemcg support for eviction
gpusvm:
- reorg code to give drivers more flexibility
atomic:
- add create_state callback and helper
- add documentation on atomic commit lifetime
buddy:
- add per-order free
- add used block scoreboard
- fix UAF
- test buffer clearance on resume
- add phys_addr->block helper
gem:
- drop DRIVER_GEM_GPUVA flag
ttm:
- be more aggressive allocating below protection limit
sched:
- add test suite for concurrent job submissions
hdmi:
- hook the color format property in helpers
mipi-dsi:
- add MIPI_DSI_MODE_DSC_ALL_SLICES_IN_PKT
bridge:
- add atomic create callbacks
- drop atomic reset
- display-connector: don't autoenable HPD IRQ
- trigger initial HPD for DP
- ti-sn65dsi83: remove NO_HFP and NO_HBP mode flags
- analogix_dp: switch to DP link training helpers
dp:
- add support for DSC max delta BPP
edid:
- parse panel type from DisplayID 2.x Display Parameters
sysfb:
- improve panel, stride, framebuffer size validation
panel:
- implement ref counting for struct drm_panel
- himax-hx83121a: add backlight regulator support
- novatek-nt36672a: Inline panel init sequences
- visionox-vtdr6130: enable DSC
- novatek-nt37801: Use mipi_dsi_*_multi() functions
- samsung-s6d16d0: Fix prepare error handling
- support Novatek NT36536 plus DT bindings
- sofef00: fix backlight updates
- osd101t2587: use mipi_dsi_*_multi interface
- panel-edp: adjust timing for AUO displays
- panel-lvds: support Opto Logic SCX1001511GGC49
- panel-simple: support Kyocera tcg070wvlq
- panel-edp: quirks
- AUO B116XAT04.3, CMN N116BCP-EA2, CSW MNB601LS1-8
- BOE NV116WH2-M30, BOE NT116WHM-N21, BOE NV116FH1-M31
- BOE NV116FH1-M30, NV140FHM-N5B, TM156VDXP25
- BOE NE160QDM-NY1, MB116AS01
- new:
- Samsung ATNA40HQ08-0, Anbernic TD4310
- Chipone ICNA35XX, Ilitek ILI9488
- Ilitek ILI7807S, Renesas R63419
- MNE001BS6-2, MNF601BS4-1, Sharp LQ120P1JX51
virtio:
- add support for save/restore virtio_gpu_objects
- abort vq wait on device removal
amdgpu:
- add color format DRM property
- initial compute pipe reset support
- add GFX 6-8 modifier support
- initial DCN 6.0.0 support
- dmemcg eviction support
- improved boundary checking for bios parsing
- RAS updates and rework
- VCN secure submission fixes
- 8K panel fix
- Display KUNIT tests
- parse panel type from DisplayID
- Align IP discovery to pci device lifetime
- SOC15 register macro cleanups
- UVD memory placement fixes
- GFX9 mode2 reset fixes
- drop unnecessary BUG/BUG_ON
- GFX8 soft reset rework
- enable soft reset on GFX8
- PSP/SMU 15.0.9 update
- VI ASPM fix
- userq fixes
- amdgpu_vm_get_task_info_pasid lifetime fix
- DC CACP support
- change system_unbound_wq with system_dfl_wq
- Loosen VFCT bios parsing to deal with pci=realloc
- SI/SMU7 AC/DC switch fix
- VM fence handling fix
- GEM close optimisation
- Apple Studio Display fixes
- DC FRL fixes
amdkfd:
- initial compute pipe reset support
- allow applications to opt out of sigbus on fatal errors
- improve CRIU boundary checks
- MQD handling rework
- move TBA/TMA from system to device memory
- avoid topology-lock in kfd_mmap
- SVM eviction fixes
radeon:
- fix unset CONFIG_ACPI build
i915:
- Novalake (NVL display version 35) timing generator enabling
- NVL DC3CO enabling
- enable UBHR link rates on thunderbolt tunnels
- Reduce Xe3+ PM demand peak bandwidth
- enable pipe DMC error interrupts for display 30+
- add kunit tests for DP link config selection
- refactor and document DP link recovery
- i915/xe driver display probe/remove/suspend/resume/shutdown cleanup
and unification
- i915/xe display runtime PM unified
- Break i915 and xe panic dependency on struct intel_framebuffer
- Streamline Pre/Post-CSC LUT loops
- drop TGL DC3DO support
- CDCLK santization
- fix HDMI scrambling enable
- fix phys bo pread/pwrite with offset
- add missing nospec on parallel submit slot
- fix some NULL derefs
xe:
- drop force_execlist module param
- gate observation streams with perf_allow_cpu
- skip FORCE_WC and vm_bound check for external dma-bufs
- dmemcg eviction support
- remove unused NVL-S GuC
- TLB invalidation improvements
- NVL-S updated PCI-IDs and w/a
- madvise: optimise invalidation path
- fix infinite gt-reset loop in timeout recovery
- update TTM device benefical_order
- wait on external BO kernel fences in exec ioctl
- add/use more KLV helpers
- sriov: disable display in admin only PF mode
- add RAS GPU health indicator
- optimise TTM populate for DONTNEED BO
- drop force_probe for NVL-s
- add debugfs for pcode info
amdxdna:
- disable device buffer export
nova:
- build nova-core/nova-drm from drivers/gpu
- export nova-core rust symbols (workaround)
- GSP boot process consolidation
- Boot GSP with vGPU enabled
- TLV firmware image format support
- Hopper/Blackwell fixes and cleanups
- I/O projection adoption
tyr:
- firmware loading and MCU boot
- add generic slot manager + MMU
- GPU VM support ARM64 LPAE page tables
- add kernel buffer object for internal allocations
- add parser for Mali CSF
- add MCU booting
nouveau:
- race fixes
- check instmem iomapping at first use
- add dmemcg support
- expose NVDEC channels
- add scanline position/head state support for GSP
qxl:
- convert simple encoder to regular
ethosu:
- add perf counter support
etnaviv:
- force flush on power register ops
msm:
- support DSC configuration with slice_per_pkt > 1
mxsfb:
- fix disable sequence
panthor:
- support sparse mappings
rockchip:
- switch away from simple helpers
- support YUV background color
- fix layer config timeout
- add edp support for rk3576
- add batch command submission function
rocket:
- error handling and NULL ptr deref fixes
sun4i:
- switch away from simple helpers
imagination:
- mark BXM-4-64 MC1 as support
host1x:
- support tegra264
tegra:
- add DSI for tegra 20/30
v3d:
- reduce PM runtime autosuspend delay
- scheduler fixes and refactoring
- deprecate v3d 3.3 and 4.1
- validate CPU job query boundaries
hibmc:
- improve plane format handling
- switch to gem shmem
mediatek:
- cec: correct compat for mt7623-8167?
exynos:
- remove simple dependency
- add error handling to encoder paths
- take i2c adapter module reference"
* tag 'drm-next-2026-08-20' of https://gitlab.freedesktop.org/drm/kernel: (2074 commits)
drm/xe/mcr: Take vcs1/vecs1 into account for first media slice
drm/xe: Fix a bug in pc_adjust_freq_bounds()
drm/xe: Fix xe_device_probe() failure
drm/xe/drm_ras: Move has_drm_ras check to drm_ras layer
drm/xe/ras: Fix boot-time ras error processing
drm/amd/display: make DC_RUN_WITH_PREEMPTION_ENABLED misuse a build error
drm/amd/pm: silence uninitialized variable warnings
drm/amdgpu: skip BOs being torn down during GTT recovery
drm/amdgpu: Reject UVD message with invalid number of h265 refs
drm/amdgpu: keep PRT mappings off the vm_bo state lists
drm/amdgpu: fix nbif 6.3.1 l1 low power not functional
drm/amd/display: fix BT.2020 YCbCr output CSC matrices for DCE
drm/amd/display: fix BT.2020 YCbCr limited output CSC matrix
drm/amdgpu: Implement insert_end for VCE 3
drm/amdgpu: Fix UVD min buffer sizes
drm/amdgpu: Fix UVD decode image min size calculation
drm/amdgpu: Fix UVD dpb min size calculation for H264
drm/amdgpu: Reject UVD message with dimensions above 4096
drm/amdgpu: check ASPM on the dGPU host link
drm/radeon: fix autosuspend cleanup during teardown
...
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drm_gem_reset_shadow_plane() is no longer used: all callers now go
through drm_gem_create_shadow_plane_state() via the
atomic_create_state hook. Remove it.
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260814-drm-no-more-plane-reset-v2-5-82d2963dd134@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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DRM_GEM_SHADOW_PLANE_FUNCS currently sets .reset to
drm_gem_reset_shadow_plane. Since
drm_gem_create_shadow_plane_state() now exists and only handles
pristine state allocation without conflating it with hardware or
suspend/resume reset, switch the macro to use .atomic_create_state
instead.
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260814-drm-no-more-plane-reset-v2-4-82d2963dd134@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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drm_gem_simple_kms_reset_shadow_plane() implements the reset_plane
hook for simple-kms shadow-buffered planes. Since the reset hook
conflates initial state creation with hardware and software reset
during suspend/resume, convert it to the create_plane_state pattern.
Replace it with drm_gem_simple_kms_create_shadow_plane_state(), which
implements the create_plane_state hook using
drm_gem_create_shadow_plane_state(). Update
DRM_GEM_SIMPLE_DISPLAY_PIPE_SHADOW_PLANE_FUNCS accordingly.
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260814-drm-no-more-plane-reset-v2-3-82d2963dd134@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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The GEM shadow-plane helpers only expose reset functions
(drm_gem_reset_shadow_plane and __drm_gem_reset_shadow_plane) that
handle both the initial state allocation and the reset path. The new
atomic_create_state hook requires a function that only allocates and
initializes a pristine state without any side effect.
Create __drm_gem_shadow_plane_state_init() to initialize a
pre-allocated shadow plane state, and
drm_gem_create_shadow_plane_state() to allocate and initialize one
from scratch.
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260814-drm-no-more-plane-reset-v2-2-82d2963dd134@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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The simple-kms helper provides a reset_plane hook to let drivers
override the default plane reset. However, the reset hook is
overloaded: it is used to create the initial software state at probe
time, but also to reset both the hardware and software state during
suspend/resume. These two roles have different expectations, and
reset is not fallible which makes error handling difficult.
The atomic_create_state pattern was introduced to untangle this by
providing a hook that only allocates and initializes a pristine state
without any side effect.
Add a create_plane_state hook to struct
drm_simple_display_pipe_funcs. When provided,
drm_simple_kms_plane_reset() will use it to allocate a fresh state,
falling back to reset_plane and then to the default
drm_atomic_helper_plane_reset().
This will allow simple-kms drivers to be converted to the
atomic_create_state pattern.
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260814-drm-no-more-plane-reset-v2-1-82d2963dd134@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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struct ns_common overlays struct ns_tree with the rcu_head used by kfree_rcu().
That lets the deferred-free machinery overwrite ns_id and __ns_ref_active as
soon as a namespace is queued for freeing, even though nsfs tree walkers may
still read those fields under RCU after ns_tree_remove(). KASAN reports slab
UAF.
Keep the tree state and deferred-free callback storage separate. Namespace tree
readers can then continue to validate and take references until the grace
period has elapsed.
Signed-off-by: Jérémy Jean <Jeremy.Jean@oss.cyber.gouv.fr>
Link: https://patch.msgid.link/20260814102005.1939777-1-Jeremy.Jean@oss.cyber.gouv.fr
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
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