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0db94da5a0a1cacda080b9ec8425fcbe4babc141
linux/drivers/gpu/drm
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Srinivasan Shanmugam 0db94da5a0 drm/amdgpu/ttm: Fix crash when handling MMIO_REMAP in PDE flags 
The MMIO_REMAP BO is a special 4K IO page that does not have a ttm_tt
behind it. However, amdgpu_ttm_tt_pde_flags() was treating it like
normal TT/doorbell/preempt memory and unconditionally accessed
ttm->caching. For the MMIO_REMAP BO, ttm is NULL, so this leads to a
NULL pointer dereference when computing PDE flags.

Fix this by checking that ttm is non-NULL before reading ttm->caching.
This prevents the crash for MMIO_REMAP and also makes the code more
defensive if other BOs ever come through without a ttm_tt.

Fixes: fb5a52dbe9 ("drm/amdgpu: Implement TTM handling for MMIO_REMAP placement")
Suggested-by: Jesse Zhang <Jesse.Zhang@amd.com>
Suggested-by: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Jesse Zhang <Jesse.Zhang@amd.com>
Tested-by: Jesse Zhang <Jesse.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-11-19 17:34:15 -05:00
..
adp
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
amd
drm/amdgpu/ttm: Fix crash when handling MMIO_REMAP in PDE flags
2025-11-19 17:34:15 -05:00
arm
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
armada
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
aspeed
…
ast
drm/ast: Handle framebuffer from dma-buf
2025-11-10 16:02:13 +01:00
atmel-hlcdc
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
bridge
drm/bridge: synopsys: dw-dp: add bridge before attaching
2025-11-03 13:04:55 +01:00
ci
drm/ci: Uprev igt
2025-07-04 11:06:38 -07:00
clients
drm/client: Flush client buffers with drm_client_buffer_sync()
2025-10-30 21:01:39 +01:00
display
Merge tag 'drm-misc-next-2025-11-05-1' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
2025-11-07 12:41:26 +10:00
etnaviv
drm/etnaviv: add HWDB entry for GC8000 Nano Ultra VIP r6205
2025-11-04 16:44:40 +01:00
exynos
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
fsl-dcu
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
gma500
drm/gma500: use drm_crtc_vblank_crtc()
2025-11-10 13:24:24 +02:00
gud
drm/gud: rearrange gud_probe() to prepare for function splitting
2025-10-24 19:36:45 +01:00
hisilicon
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
hyperv
drm/hyperv: include drm_print.h where needed
2025-11-04 14:37:15 +02:00
i915
Merge tag 'drm-intel-gt-next-2025-11-14' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next
2025-11-18 06:52:09 +10:00
imagination
drm/imagination: Fix reference to devm_platform_get_and_ioremap_resource()
2025-10-31 14:34:53 +00:00
imx
drm/imx/ipuv3: Fix dumb-buffer allocation for non-RGB formats
2025-11-13 14:56:17 +01:00
ingenic
drm/ingenic: crtc: Switch to ingenic_drm_get_new_priv_state()
2025-10-06 13:59:22 +02:00
kmb
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
lib
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
lima
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
logicvc
drm/logicvc: Switch to drm_atomic_get_new_crtc_state()
2025-10-06 13:59:15 +02:00
loongson
drm/ttm: Replace multiple booleans with flags in device init
2025-10-31 09:14:35 +00:00
mcde
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
mediatek
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
meson
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
mgag200
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
msm
drm/msm: use drm_crtc_vblank_waitqueue()
2025-11-10 15:41:38 +02:00
mxsfb
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
nouveau
drm/nouveau: fully define nvfw_hs_load_header_v2
2025-11-12 12:53:11 -05:00
nova
Merge tag 'drm-rust-next-2025-09-16' of https://gitlab.freedesktop.org/drm/rust/kernel into drm-next
2025-09-17 16:13:49 +10:00
omapdrm
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
panel
drm/panel: ilitek-ili9882t: Add support for Ilitek IL79900A-based panels
2025-10-31 11:18:31 +01:00
panfrost
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
panthor
drm/panthor: Fix potential memleak of vma structure
2025-11-10 15:10:33 +00:00
pl111
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
qxl
drm/ttm: Replace multiple booleans with flags in device init
2025-10-31 09:14:35 +00:00
radeon
drm/radeon: delete radeon_fence_process in is_signaled, no deadlock
2025-11-18 10:52:32 -05:00
renesas
drm: rcar-du: fix incorrect return in rcar_du_crtc_cleanup()
2025-11-05 11:17:26 +02:00
rockchip
drm/rockchip: include drm_print.h where needed
2025-11-03 15:48:02 +02:00
scheduler
drm/sched: Replace use of system_wq with system_percpu_wq
2025-11-07 09:09:03 +01:00
sitronix
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
solomon
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
sprd
…
sti
drm/sti: hdmi: add bridge before attaching
2025-11-03 13:04:55 +01:00
stm
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
sun4i
drm/sun4i: Nuke mixer pointer from layer code
2025-11-12 17:18:25 +08:00
sysfb
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
tegra
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
tests
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
tidss
drm/tidss: Move OLDI mode validation to OLDI bridge mode_valid hook
2025-11-12 11:54:39 +02:00
tilcdc
drm/tilcdc: Switch to drm_atomic_get_new_crtc_state()
2025-10-06 13:59:19 +02:00
tiny
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
ttm
drm/ttm: Fix @alloc_flags description
2025-11-06 10:35:47 +00:00
tve200
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
tyr
rust: drm: Introduce the Tyr driver for Arm Mali GPUs
2025-09-11 12:20:03 +00:00
udl
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
v3d
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
vboxvideo
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
vc4
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
vgem
drm/vgem-fence: Fix potential deadlock on release
2025-10-06 15:05:17 +02:00
virtio
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
vkms
drm/vkms: Fix use after frees on error paths
2025-11-04 11:46:03 +01:00
vmwgfx
drm/vmwgfx: use drm_crtc_vblank_crtc()
2025-11-10 13:24:07 +02:00
xe
Merge tag 'drm-intel-next-2025-11-14' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next
2025-11-18 05:55:52 +10:00
xen
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
xlnx
drm/xlnx: Compute dumb-buffer sizes with drm_mode_size_dumb()
2025-09-29 17:50:54 +02:00
drm_atomic_helper.c
drm/atomic: use drm_crtc_vblank_waitqueue()
2025-11-10 15:41:30 +02:00
drm_atomic_state_helper.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_atomic_uapi.c
drm/drm_crtc: Introduce sharpness strength property
2025-10-30 15:38:04 +02:00
drm_atomic.c
drm/atomic: WARN about invalid drm_foo_get_state() usage
2025-10-28 21:45:14 +02:00
drm_auth.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_blend.c
…
drm_bridge_helper.c
drm/bridge: Include <linux/export.h>
2025-06-16 09:02:25 +02:00
drm_bridge.c
drm/bridge: add warning for bridges using neither devm_drm_bridge_alloc() nor drm_bridge_add()
2025-11-03 13:04:55 +01:00
drm_buddy.c
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
drm_cache.c
drm/gpu: Remove dead checks on wbinvd_on_all_cpus()'s return value
2025-07-10 13:07:26 +02:00
drm_client_event.c
drm/client: Do not free client memory by default
2025-10-24 08:45:37 +02:00
drm_client_modeset.c
drm/fb-helper: Synchronize dirty worker with vblank
2025-09-16 12:42:52 +02:00
drm_client.c
drm/client: Flush client buffers with drm_client_buffer_sync()
2025-10-30 21:01:39 +01:00
drm_color_mgmt.c
drm/color-mgmt: Prepare for RGB332 palettes
2025-08-26 09:54:18 +02:00
drm_connector.c
drm/connector: move HDR sink metadata to display info
2025-06-23 21:44:55 +03:00
drm_crtc_helper_internal.h
…
drm_crtc_helper.c
…
drm_crtc_internal.h
…
drm_crtc.c
drm/drm_crtc: Introduce sharpness strength property
2025-10-30 15:38:04 +02:00
drm_damage_helper.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_debugfs_crc.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_debugfs.c
drm: add debugfs support on per client-id basis
2025-07-04 15:59:06 +02:00
drm_displayid_internal.h
drm/displayid: add quirk to ignore DisplayID checksum errors
2025-11-04 14:49:30 +02:00
drm_displayid.c
drm/displayid: add quirk to ignore DisplayID checksum errors
2025-11-04 14:49:30 +02:00
drm_draw_internal.h
drm/draw: fix color truncation in drm_draw_fill24
2025-10-14 09:25:10 +02:00
drm_draw.c
drm/draw: fix color truncation in drm_draw_fill24
2025-10-14 09:25:10 +02:00
drm_drv.c
Merge drm/drm-next into drm-intel-next
2025-09-10 08:01:42 -04:00
drm_dumb_buffers.c
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
drm_edid_load.c
…
drm_edid.c
drm/edid: add 6 bpc quirk to the Sharp LQ116M1JW10
2025-11-06 08:51:21 -08:00
drm_eld.c
…
drm_encoder.c
…
drm_exec.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_fb_dma_helper.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_fb_helper.c
drm/fb-helper: Synchronize dirty worker with vblank
2025-09-16 12:42:52 +02:00
drm_fbdev_dma.c
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
drm_fbdev_shmem.c
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
drm_fbdev_ttm.c
drm/client: Create client buffers with drm_client_buffer_create_dumb()
2025-10-30 21:01:35 +01:00
drm_file.c
drm: add debugfs support on per client-id basis
2025-07-04 15:59:06 +02:00
drm_flip_work.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_format_helper.c
drm/format-helper: Remove drm_fb_blit()
2025-09-23 15:06:06 +02:00
drm_format_internal.h
drm/format-helper: Split off byte swapping from drm_fb_xrgb8888_to_rgb565()
2025-06-27 15:59:23 +02:00
drm_fourcc.c
drm: Pass pixel_format+modifier directly to drm_get_format_info()
2025-07-16 20:01:13 +03:00
drm_framebuffer.c
drm/framebuffer: Switch to drm_atomic_get_new_crtc_state()
2025-10-06 13:59:21 +02:00
drm_gem_atomic_helper.c
drm/gem-atomic: Reset plane state to NULL if allocation failed
2025-10-26 17:12:58 +01:00
drm_gem_dma_helper.c
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
drm_gem_framebuffer_helper.c
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
drm_gem_shmem_helper.c
drm/gem-shmem: Compute dumb-buffer sizes with drm_mode_size_dumb()
2025-09-29 13:57:45 +02:00
drm_gem_ttm_helper.c
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
drm_gem_vram_helper.c
drm/ttm: Replace multiple booleans with flags in device init
2025-10-31 09:14:35 +00:00
drm_gem.c
Merge tag 'drm-misc-next-2025-10-02' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
2025-10-21 10:16:34 +02:00
drm_gpusvm.c
drm/gpusvm, drm/xe: Allow mixed mappings for userptr
2025-10-17 10:25:27 +02:00
drm_gpuvm.c
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
drm_internal.h
Merge drm/drm-next into drm-misc-n
2025-08-11 14:37:45 +02:00
drm_ioc32.c
…
drm_ioctl.c
drm: Add DRM prime interface to reassign GEM handle
2025-07-18 08:59:24 +02:00
drm_kms_helper_common.c
…
drm_lease.c
…
drm_managed.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_mipi_dbi.c
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
drm_mipi_dsi.c
drm: Add MIPI read_multi func and two write macros
2025-08-14 15:42:26 -07:00
drm_mm.c
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
drm_mode_config.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_mode_object.c
…
drm_modes.c
…
drm_modeset_helper.c
drm/client: Remove holds_console_lock parameter from suspend/resume
2025-10-18 17:35:09 +02:00
drm_modeset_lock.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_of.c
drm: of: fix documentation reference
2025-08-21 16:21:08 +02:00
drm_pagemap.c
drm/pagemap: Allocate folios when possible
2025-08-06 13:34:58 +02:00
drm_panel_backlight_quirks.c
drm: panel-backlight-quirks: Add Steam Deck brightness quirk
2025-09-03 10:23:03 -05:00
drm_panel_orientation_quirks.c
drm/panel: Include <linux/export.h>
2025-06-16 09:02:39 +02:00
drm_panel.c
drm/panel: Allow powering on panel follower after panel is enabled
2025-08-25 09:17:49 -07:00
drm_panic_qr.rs
drm/panic: use core::ffi::CStr method names
2025-09-16 09:26:59 +02:00
drm_panic.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_pci.c
drm: Do not include <linux/export.h>
2025-06-16 09:00:09 +02:00
drm_plane_helper.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_plane.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_prime.c
drm: include drm_print.h where needed
2025-10-31 10:34:52 +02:00
drm_print.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_privacy_screen_x86.c
…
drm_privacy_screen.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_probe_helper.c
drm/probe-helper: put the bridge returned by drm_bridge_chain_get_first_bridge()
2025-07-22 13:01:28 +02:00
drm_property.c
…
drm_rect.c
…
drm_self_refresh_helper.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_simple_kms_helper.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_suballoc.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_syncobj.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_sysfs.c
DRM: Add a new 'boot_display' attribute
2025-09-10 09:35:33 -05:00
drm_trace_points.c
…
drm_trace.h
…
drm_vblank_helper.c
drm/vblank: Add CRTC helpers for simple use cases
2025-10-01 08:32:00 +02:00
drm_vblank_work.c
drm/vblank: use drm_crtc_vblank_crtc() in workers
2025-11-10 13:22:58 +02:00
drm_vblank.c
drm/vblank: Increase timeout in drm_wait_one_vblank()
2025-11-07 09:48:35 +01:00
drm_vma_manager.c
drm: Include <linux/export.h>
2025-06-16 09:01:23 +02:00
drm_writeback.c
Merge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel
2025-07-30 19:26:49 -07:00
Kconfig
Merge tag 'hyperv-next-signed-20251006' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
2025-10-07 08:40:15 -07:00
Kconfig.debug
drm/format-helper: Move drm_fb_build_fourcc_list() to sysfb helpers
2025-06-18 10:46:03 +02:00
Makefile
Merge tag 'drm-misc-next-2025-10-02' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
2025-10-21 10:16:34 +02:00