kernel/linux.git/drivers/gpu/drm/i915, branch v7.2-rc2

drm/i915/bios: range check LFP Data Block panel_type2

2026-07-01T06:12:33+00:00

While the panel_type from LFP Data Block is range checked, panel_type2 is not. Add a few helpers for range checking, and use them to not only check panel_type2, but also improve clarity and correctness in the panel type selection. Discovered using AI-assisted static analysis confirmed by Intel Product Security. v2: - Fix commit message typo (Michał) - Add is_panel_type_pnp() (Ville) Reported-by: Martin Hodo Fixes: 6434cf630086 ("drm/i915/bios: calculate panel type as per child device index in VBT") Cc: stable@vger.kernel.org # v6.0+ Cc: Animesh Manna Cc: Ville Syrjälä Reviewed-by: Michał Grzelak # v1 Reviewed-by: Ville Syrjälä Link: https://patch.msgid.link/20260626140155.1389655-1-jani.nikula@intel.com Signed-off-by: Jani Nikula (cherry picked from commit c9ebe5d2f25729d6cfbbb1235d640bf67f9275df) Signed-off-by: Joonas Lahtinen

drm/i915/vrr: require valid min/max vfreq for VRR

2026-07-01T06:12:30+00:00

Ensure the EDID provided min/max vfreq are valid. Most scenarios are already covered (by coincidence) through the checks in intel_vrr_is_capable() and intel_vrr_is_in_range(), but be more explicit about it. At worst, a zero min_vfreq could lead to a division by zero in intel_vrr_compute_vmax(). Discovered using AI-assisted static analysis confirmed by Intel Product Security. Reported-by: Martin Hodo Fixes: 117cd09ba528 ("drm/i915/display/dp: Compute VRR state in atomic_check") Cc: stable@vger.kernel.org # v5.12+ Cc: Ankit Nautiyal Reviewed-by: Ankit Nautiyal Link: https://patch.msgid.link/20260625131040.1051272-1-jani.nikula@intel.com Signed-off-by: Jani Nikula (cherry picked from commit 1765cf59f517b02f3b0591fe5120930d08bddeb6) Signed-off-by: Joonas Lahtinen

drm/i915/hdcp: require monotonically increasing seq_num_v

2026-06-30T06:35:52+00:00

The HDCP 2.2 specification requires the seq_num_v to be monotonically increasing, and repeated seq_num_v needs to be treated as an integrity failure. Make it so. For the first message, seq_num_v must be zero, and is already checked. We can only check for less-than-or-equal for the subsequent messages, where hdcp2_encrypted is true. Discovered using AI-assisted static analysis confirmed by Intel Product Security. Reported-by: Martin Hodo Fixes: d849178e2c9e ("drm/i915: Implement HDCP2.2 repeater authentication") Cc: stable@vger.kernel.org # v5.2+ Cc: Suraj Kandpal Reviewed-by: Suraj Kandpal Link: https://patch.msgid.link/20260625104407.1025614-1-jani.nikula@intel.com Signed-off-by: Jani Nikula (cherry picked from commit 58a224375c81179b52558c53d8857b93196d2687) Signed-off-by: Joonas Lahtinen

drm/i915/hdcp: check streams[] bounds before overflow

2026-06-30T06:35:49+00:00

The data->streams[] overflow check is done after the buffer overflow has already happened. Move the overflow check before the write. Side note, emitting a warning splat with a backtrace might be overkill here, but prefer not changing the behaviour other than not doing the overrun. Discovered using AI-assisted static analysis confirmed by Intel Product Security. Reported-by: Martin Hodo Fixes: e03187e12cae ("drm/i915/hdcp: MST streams support in hdcp port_data") Cc: stable@vger.kernel.org # v5.12+ Cc: Anshuman Gupta Cc: Suraj Kandpal Reviewed-by: Suraj Kandpal Link: https://patch.msgid.link/20260625170304.1104723-1-jani.nikula@intel.com Signed-off-by: Jani Nikula (cherry picked from commit 9284ab3b6e776c315883ac2611283d263c9460fd) Signed-off-by: Joonas Lahtinen

drm/i915: Return NULL on error in active_instance

2026-06-30T06:35:45+00:00

Avoid returning &node->base when node is NULL due to OOM during GFP_ATOMIC allocation. Discovered using AI-assisted static analysis confirmed by Intel Product Security. Reported-by: Martin Hodo Fixes: bfaae47db3c0 ("drm/i915: make lockdep slightly happier about execbuf.") Cc: Maarten Lankhorst Cc: Thomas Hellström Cc: Simona Vetter Cc: # v5.13+ Signed-off-by: Joonas Lahtinen Reviewed-by: Sebastian Brzezinka Reviewed-by: Maarten Lankhorst Link: https://patch.msgid.link/20260624090940.74840-1-joonas.lahtinen@linux.intel.com (cherry picked from commit 6029bc064f0b1bac184203a50fbaaf070fa18832) Signed-off-by: Joonas Lahtinen

Merge tag 'drm-next-2026-06-27' of https://gitlab.freedesktop.org/drm/kernel

2026-06-26T23:41:30+00:00

Pull drm merge window fixes from Dave Airlie: "This is the merge window fixes from our next tree, i915/xe and amdgpu make up all of it. I've got a separate fixes pull from our fixes branch arriving after this. i915: - Fix corrupted display output on GLK, #16209 - Add missing Spectre mitigation for parallel submit IOCTL - MTL+ fix for DP resume - clear CRTC blobs after dropping refs - fix sharpness filter on DP MST xe: - Set TTM beneficial order to 9 in Xe - Several error path cleanups - Fix TDR for unstarted jobs on kernel queues - Several TLB invalidation fixes related to suspending LR queues - Some small RAS fixes - Multi-queue suspend fix for LR queues - Revert inclusion of NVL_S firmware amdgpu: - devcoredump fixes - SMU15 fix - Various irq put/get imbalance cleanup fixes - 8K panel fix - DCN3.5 fix - lockdep fix - Cleaner shader sysfs IB overflow fix - Async flip fixes - GET_MAPPING_INFO fix - CP_GFX_SHADOW fix - Ctx pstate handling fix - GTT bo move handling fixes - Old UVD BO placement fixes - GC9 mode2 reset fix - IH6.1 version fix - Soft IH ring fix amdkfd: - Fix doorbell/mmio double unpin on free - CRIU fixes - SMI event fixes - Sysfs teardown fix - Various boundary checking fixes - Various error checking fixes - SVM fix" * tag 'drm-next-2026-06-27' of https://gitlab.freedesktop.org/drm/kernel: (52 commits) drm/i915/cdclk: Fix up CDCLK_FREQ_DECIMAL without a full PLL re-enable drm/i915/gem: Add missing nospec on parallel submit slot drm/amdgpu: Use system unbound workqueue for soft IH ring amdgpu/ih6.1: Fix minor version drm/amdkfd: Use exclusive bounds for SVM split alignment checks drm/amdgpu/gfx9: Fix Ring and IB test fail after mode2 drm/amdgpu/uvd: Fix forcing MSG, FB BOs into VCPU segment when it isn't at 0 (v2) drm/amdgpu/uvd: Place VCPU BO only in VRAM for UVD 4.x and older drm/amdgpu: Fix amdgpu_bo_move() when old_mem and new_mem are both GTT drm/amdgpu: Respect placement requirements in amdgpu_gtt_mgr functions drm/amdgpu: Fix context pstate override handling drm/amdkfd: Use memdup_array_user to copy data from/to user space at kfd ioctls drm/amdkfd: check find_first_zero_bit before __set_bit on kfd->doorbell_bitmap drm/amdkfd: Let driver decide buffer size at AMDKFD_IOC_GET_DMABUF_INFO ioctl drm/amdgpu: fix recursive ww_mutex acquire in amdgpu_devcoredump_format drm/amdgpu: convert amdgpu_vm_lock_by_pasid() to drm_exec drm/amdgpu: Don't use UTS_RELEASE directly drm/amdkfd: Fix NULL deref during sysfs teardown drm/amdgpu: validate CP_GFX_SHADOW chunk size in CS pass1 drm/amdgpu: check amdgpu_vm_bo_find() result in GET_MAPPING_INFO ...

drm/i915/cdclk: Fix up CDCLK_FREQ_DECIMAL without a full PLL re-enable

2026-06-24T10:53:32+00:00

The GOP (and even Bspec on some platforms) is a bit inconsistent on what the CDCLK_FREQ_DECIMAL divider should be. Currently any mismatch there causes a full CDCLK PLL disable+re-enable, which we really don't want to do if any displays are currently active. Let's instead just reprogram CDCLK_FREQ_DECIMAL when that is the only thing amiss. For any other (more serious) mismatch we still punt to the full PLL reprogramming. We also need to tweak the bxt_cdclk_cd2x_pipe() stuff a bit to consistently select pipe==NONE since we have no idea which pipes are enabled at this point. Since we're not actually changing the CDCLK frequency here we don't need to sync the update to any pipe. Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/work_items/16209 Signed-off-by: Ville Syrjälä Link: https://patch.msgid.link/20260612173653.7830-2-ville.syrjala@linux.intel.com Reviewed-by: Michał Grzelak (cherry picked from commit 3f9de66f8acbf8ff45a91b4920605ed10c6b7c06) Fixes: ba91b9eecb47 ("drm/i915/cdclk: Decouple cdclk from state->modeset") Fixes: d66a21947e21 ("drm/i915/bxt: Sanitize CDCLK to fix breakage during S4 resume") Fixes: c73666f394fc ("drm/i915/skl: If needed sanitize bios programmed cdclk") Cc: # v4.5+ Signed-off-by: Joonas Lahtinen

drm/i915/gem: Add missing nospec on parallel submit slot

2026-06-23T08:36:28+00:00

Add missing Spectre mitigation for userspace controlled parallel submission slot. Discovered using AI-assisted static analysis confirmed by Intel Product Security. Reported-by: Martin Hodo Fixes: e5e32171a2cf ("drm/i915/guc: Connect UAPI to GuC multi-lrc interface") Cc: Matthew Brost Cc: Tvrtko Ursulin Signed-off-by: Joonas Lahtinen Reviewed-by: Matthew Brost Reviewed-by: Tvrtko Ursulin Cc: # v5.16+ Link: https://patch.msgid.link/20260622132539.165558-1-joonas.lahtinen@linux.intel.com (cherry picked from commit 15b9353deff3cf72331c387780de3cf9c316b643) Signed-off-by: Joonas Lahtinen

Merge tag 'drm-next-2026-06-17' of https://gitlab.freedesktop.org/drm/kernel

2026-06-17T09:21:00+00:00

Pull drm updates from Dave Airlie: "Highlights: - xe: add initial CRI platform support - amdgpu: initial HDMI 2.1 FRL support - rust: add some new type concepts for device lifetimes - scheduler: moves to a fair algorithm and lots of cleanups But it's mostly the usual mountain of changes across the board. core: - add docbook for DRM_IOCTL_SYNCOBJ_EVENTFD - change signature of drm_connector_attach_hdr_output_metadata_property - dedup counter and timestamp retrieval in vblank code - parse AMD VSDB v3 in CTA extension blocks - add P230, Y7, XYYY2101010, T430, XVUY210101010 formats - don't call drop master on file close if not master - use drm_printf_indent in atomic / bridge - fix 32b format descriptions - docs: fix toctree - hdmi: add common TMDS character rates - fix drm_syncobj_find_fence leak rust: - introduce Higher-Ranked lifetime types - replace drvdata with scoped registration data - add GPUVM immediate mode abstraction for rust GPU drivers - introduce DeviceContext type state for drm::Device bridge: - clarify drm_bridge_get/put - create drm_get_bridge_by_endpoint and use it - analogix_dp: add panel probing - ite-it6211 - use drm audio hdmi helpers buddy: - add lockdep annotations dp: - add PR and VRR updates - mst: fix buffer overflows - add Adaptive Sync SDP decoding support - fix OOB reads in dp-mst ttm: - bump fpfn/lpfn to 64-bit scheduler: - change default to fair scheduler - map runqueue 1:1 with scheduler dma-buf: - port selftests to kunit - convert dma-buf system/heap allocators to module - add separate DMABUF_HEAPS_SYSTEM_CC_SHARED Kconfig udmabuf: - revert hugetlb support - fix error with CONFIG_DMA_API_DEBUG dma-fence: - fix tracepoints lifetime - remove unused signal on any support ras: - add clear error counter netlink command to drm ras gpusvm: - reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges - use IOVA allocations pagemap: - use IOVA allocations panels: - update to use ref counts - add support for CSW PNB601LS1-2, LGD LP116WHA-SPB1 - add support for waveshare panels - CMN N116BCN-EA1, CMN N140HCA-EEK, IVO M140NWFQ R5, - IVO, R140NWFW R0, BOE NT140*, BOE NV133FHM-N4F, - AUO B140*, AUO B133HAN06.6 and AUO B116XTN02.3 eDP panels - Surface Pro 12 Panel xe: - add CRI PCI-IDs - debugfs add multi-lrc info - engine init cleanup - PF fair scheduling auto provisioning - system controller support for CRI/Xe3p - PXP state machine fixes - Reset/wedge/unload corner case fixes - Wedge path memory allocation fixes - PAT type cleanups - Reject unsafe PAT for CPU cached memory - OA improvements for CRI device memory - kernel doc syntax in xe headers - xe_drm.h documentation fixes - include guard cleanups - VF CCS memory pool - i915/xe step unification - Xe3p GT tuning fixes - forcewake cleanup in GT and GuC - admin-only PF mode - enable hwmon energy attributes for CRI - enable GT_MI_USER_INTERRUPT - refactor emit functions - oa workarounds - multi_queue: allow QUEUE_TIMESTAMP register - convert stolen memory to ttm range manager - use xe2 style blitter as a feature flag - make drm_driver const - add/use IRQ page to HW engine definition - fix oops when display disabled i915: - enable PIPEDMC_ERROR interrupt - more common display code refactoring - restructure DP/HDMI sink format handling - eliminate FB usage from lowlevel pinning code - panel replay bw optimization - integrate sharpness filter into the scaler - new fb_pin abstraction for xe/i915 fb transparent handling - skip inactive MST connectors on HDCP - start switching to display specific registers - use polling when irq unavailable - Adaptive-sync SDP prep amdgpu: - use drm_display_info for AMD VSDB data - Initial HDMI 2.1 FRL support - Initial DCN 4.2.1 support - GART fixes for non-4k pages - GC 11.5.6/SDMA 6.4.0/and other new IPs - GFX9/DCE6/Hawaii/SDMA4/GART/Userq fixes - Finish support for using multiple SDMA queues for TTM operations - SWSMU updates - GC 12.1 updates - SMU 15.0.8 updates - DCN 4.2 updates - DC type conversion fixes - Enable DC power module - Replay/PSR updates - SMU 13.x updates - Compute queue quantum MQD updates - ASPM fix - Align VKMS with common implementation - DC analog support fixes - UVD 3 fixes - TCC harvesting fixes for SI - GC 11 APU module reload fix - NBIO 6.3.2 support - IH 7.1 updates - DC cursor fixes - VCN/JPEG user fence fixes - DC support for connectors without DDC - Prefer ROM BAR for default VGA device - DC bandwidth fixes - Add PTL support for profiler - Introduce dc_plane_cm and migrate surface update color path - Add FRL registers for HDMI 2.1 - Restructure VM state machine - Auxless ALPM support - GEM_OP locking/warning fixes - switch to system_dfl_wq amdkfd: - GPUVM TLB flush fix - Hotplug fix - Boundary check fixes - SVM fixes - CRIU fixes - add profiler API - MES 12.1 updates msm: - core: - fix shrinker documentation - IFPC enabled for gen8 - PERFCNTR_CONFIG ioctl support - GPU: - reworked UBWC handling - a810 support - MDSS: - add support for Milos platform - reworked UBWC handling - DisplayPort: - reworked HPD handling as prep for MST - DPU: - Milos platform support - reworked UBWC handling - DSI: - Milos platform support nova: - Hopper/Blackwell enablement (GH100/GB100/GB202) - FSP support - 32-bit firmware support - HAL functions - refactor GSP boot/unload - GA100 support - VBIOS hardening/refactoring - Adopt higher order lifetime types tyr: - define register blocks - add shmem backed GEM objects - adopt higher order lifetime types - move clock cleanup into Drop radeon: - Hawaii SMU fixes - CS parser fix - use struct drm_edid instead of edid amdxdna: - export per-client BO memory via fdinfo - AIE4 device support - support medium/lower power modes - expandable device heap support - revert read-only user-pointer BO mappings ivpu: - support frequency limiting panthor: - enable GEM shrinker support - add eviction and reclaim info to fdinfo v3d: - enable runtime PM mgag200: - support XRGB1555 + C8 ast: - support XRGB1555 + C8 - use constants for lots of registers - fix register handling imagination: - fence handling refactoring nouveau: - fix sched double call - expose VBIOS on GSP-RM systems - add GA100 support virtio: - add VIRTIO_GPU_F_BLOB_ALIGNMENT flag - add deferred mapping support gud: - add RCade Display Adapter hibmc: - fix no connectors usage mediatek: - hdmi: convert error handling - simplify mtk_crtc allocation exynos: - move fbdev emulation to drm client buffers - use drm format helpers for geometry/size - adopt core DMA tracking - fix framebuffer offset handling renesas: - add RZ/T2H SOC support versilicon: - add cursor plane support tegra: - use drm client for framebuffer" * tag 'drm-next-2026-06-17' of https://gitlab.freedesktop.org/drm/kernel: (1731 commits) dma-buf: move system_cc_shared heap under separate Kconfig accel/amdxdna: Clear sva pointer after unbind agp/amd64: Fix broken error propagation in agp_amd64_probe() accel/amdxdna: Require carveout when PASID and force_iova are disabled drm/amdkfd: always resume_all after suspend_all drm/amdgpu/gfx: move fault and EOP IRQ get/put to hw_init/hw_fini drm/amd/display: Consult MCCS FreeSync cap only if requested & supported drm/amd/pm: Use strscpy in profile mode parsing drm/amdkfd: Fix infinite loop parsing CRAT with zero subtype length drm/amdkfd: fix sysfs topology prop length on buffer truncation drm/amdgpu: drop retry loop in amdgpu_hmm_range_get_pages drm/amd/pm: bound OD parameter parsing to stack array size drm/amd/pm: Stop pp_od_clk_voltage emit at PAGE_SIZE drm/amdkfd: Unwind debug trap enable on copy_to_user failure drm/amdgpu: validate the mes firmware version for gfx12.1 drm/amdgpu: validate the mes firmware version for gfx12 drm/amdgpu: compare MES firmware version ucode for gfx11 drm/amdkfd: Add bounds check for AMDKFD_IOC_WAIT_EVENTS drm/amdgpu: restart the CS if some parts of the VM are still invalidated drm/amd/display: use unsigned types for local pipe and REG_GET counters ...

drm/i915/mtl+: Enable PPS before PLL

2026-06-16T17:06:09+00:00

Enabling PPS after a display port's PLL is enabled leads to PLL / DDI BUF timeouts during system resuming after a long (> 45 mins) suspended state, at least on some ARL and MTL laptops, either all or some of them also containing an Nvidia GPU. Enabling PPS first and then the PLL fixes the problem for all the reporters. A similar issue is seen when enabling an external DP output on PHY B (vs. PHY A in the above eDP cases), where this change will not have any effect (since no PPS is used in that case). There isn't any direct connection between PPS and PLL, so the fix for eDP works by some side-effect only. However Bspec does seem to require enabling PPS first, so let's do that. Further investigation continues on the actual root cause and a cure for external panels. Fixes: 1a7fad2aea74 ("drm/i915/cx0: Enable dpll framework for MTL+") Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/work_items/16098 Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/work_items/16064 Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/work_items/16042 Cc: Mika Kahola Cc: stable@vger.kernel.org # v7.0+ Tested-by: Jouni Högander Tested-by: Marco Nenciarini Reviewed-by: Suraj Kandpal Signed-off-by: Imre Deak Link: https://patch.msgid.link/20260612172617.3427027-1-imre.deak@intel.com (cherry picked from commit 28783a274e886dd6da61419be6020bd9d0384e9f) Signed-off-by: Rodrigo Vivi