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Antonio Quartulli 1a9f55ed5b drm/amdgpu: prevent NULL pointer dereference if ATIF is not supported 
commit a6dd15981c upstream.

acpi_evaluate_object() may return AE_NOT_FOUND (failure), which
would result in dereferencing buffer.pointer (obj) while being NULL.

Although this case may be unrealistic for the current code, it is
still better to protect against possible bugs.

Bail out also when status is AE_NOT_FOUND.

This fixes 1 FORWARD_NULL issue reported by Coverity
Report: CID 1600951:  Null pointer dereferences  (FORWARD_NULL)

Signed-off-by: Antonio Quartulli <antonio@mandelbit.com>
Fixes: c9b7c809b8 ("drm/amd: Guard against bad data for ATIF ACPI method")
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20241031152848.4716-1-antonio@mandelbit.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 91c9e221fe)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-14 13:15:15 +01:00
..
amd
drm/amdgpu: prevent NULL pointer dereference if ATIF is not supported
2024-11-14 13:15:15 +01:00
arm
drm: komeda: Fix an issue related to normalized zpos
2024-09-30 16:23:49 +02:00
armada
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aspeed
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ast
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atmel-hlcdc
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bridge
drm/bridge: lontium-lt8912b: Validate mode in drm_bridge_funcs::mode_valid()
2024-10-17 15:20:52 +02:00
display
drm/dp_mst: Skip CSN if topology probing is not done yet
2024-08-14 13:53:00 +02:00
etnaviv
drm/etnaviv: don't block scheduler when GPU is still active
2024-08-03 08:49:45 +02:00
exynos
drivers:drm:exynos_drm_gsc:Fix wrong assignment in gsc_bind()
2024-10-17 15:20:54 +02:00
fsl-dcu
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gma500
drm/gma500: fix null pointer dereference in psb_intel_lvds_get_modes
2024-08-03 08:49:32 +02:00
gud
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hisilicon
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hyperv
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i2c
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i810
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i915
drm/i915/gem: fix bitwise and logical AND mixup
2024-10-17 15:22:03 +02:00
imx
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ingenic
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kmb
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lib
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lima
drm/lima: set gp bus_stop bit before hard reset
2024-08-29 17:30:35 +02:00
logicvc
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mcde
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mediatek
drm/mediatek: Use spin_lock_irqsave() for CRTC event lock
2024-10-17 15:20:52 +02:00
meson
drm/meson: plane: Add error handling
2024-09-08 07:53:11 +02:00
mga
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mgag200
drm/mgag200: Bind I2C lifetime to DRM device
2024-08-14 13:53:00 +02:00
msm
drm/msm/dpu: don't always program merge_3d block
2024-11-01 01:56:00 +01:00
mxsfb
drm/lcdif: Do not disable clocks on already suspended hardware
2024-06-12 11:03:21 +02:00
nouveau
nouveau/dmem: Fix vulnerability in migrate_to_ram upon copy error
2024-10-17 15:22:27 +02:00
omapdrm
drm: omapdrm: Add missing check for alloc_ordered_workqueue
2024-10-17 15:21:55 +02:00
panel
drm/panel: boe-tv101wum-nl6: Check for errors on the NOP in prepare()
2024-08-03 08:49:10 +02:00
panfrost
drm/panfrost: Mark simple_ondemand governor as softdep
2024-08-03 08:49:45 +02:00
pl111
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qxl
drm/qxl: Add check for drm_cvt_mode
2024-08-03 08:49:14 +02:00
r128
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radeon
drm/radeon: Fix encoder->possible_clones
2024-10-22 15:56:46 +02:00
rcar-du
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rockchip
drm/rockchip: vop: enable VOP_FEATURE_INTERNAL_RGB on RK3066
2024-10-17 15:22:18 +02:00
savage
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scheduler
drm/sched: Add locking to drm_sched_entity_modify_sched
2024-10-17 15:22:03 +02:00
shmobile
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sis
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solomon
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sprd
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sti
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stm
drm/stm: ltdc: reset plane transparency after plane disable
2024-10-17 15:21:45 +02:00
sun4i
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tdfx
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tegra
drm/tegra: Zero-initialize iosys_map
2024-08-29 17:30:31 +02:00
tests
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tidss
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tilcdc
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tiny
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ttm
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tve200
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udl
drm/udl: Remove DRM_CONNECTOR_POLL_HPD
2024-08-11 12:35:55 +02:00
v3d
drm/v3d: Stop the active perfmon before being destroyed
2024-10-17 15:22:26 +02:00
vboxvideo
drm/vboxvideo: Replace fake VLA at end of vbva_mouse_pointer_shape with real VLA
2024-11-01 01:56:02 +01:00
vc4
drm/vc4: Stop the active perfmon before being destroyed
2024-10-17 15:22:26 +02:00
vgem
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via
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virtio
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vkms
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vmwgfx
drm/vmwgfx: Handle possible ENOMEM in vmw_stdu_connector_atomic_check
2024-11-01 01:55:58 +01:00
xen
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xlnx
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drm_agpsupport.c
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drm_aperture.c
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drm_atomic_helper.c
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drm_atomic_state_helper.c
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drm_atomic_uapi.c
drm: Consistently use struct drm_mode_rect for FB_DAMAGE_CLIPS
2024-10-17 15:21:51 +02:00
drm_atomic.c
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drm_auth.c
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drm_blend.c
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drm_bridge_connector.c
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drm_bridge.c
drm/bridge: Fix improper bridge init order with pre_enable_prev_first
2024-06-12 11:03:21 +02:00
drm_buddy.c
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drm_bufs.c
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drm_cache.c
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drm_client_modeset.c
drm/client: fix null pointer dereference in drm_client_modeset_probe
2024-08-14 13:52:55 +02:00
drm_client.c
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drm_color_mgmt.c
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drm_connector.c
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drm_context.c
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drm_crtc_helper_internal.h
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drm_crtc_helper.c
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drm_crtc_internal.h
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drm_crtc.c
drm/crtc: fix uninitialized variable use even harder
2024-10-17 15:22:10 +02:00
drm_damage_helper.c
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drm_debugfs_crc.c
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drm_debugfs.c
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drm_displayid.c
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drm_dma.c
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drm_drv.c
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drm_dumb_buffers.c
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drm_edid_load.c
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drm_edid.c
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drm_encoder_slave.c
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drm_encoder.c
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drm_fb_dma_helper.c
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drm_fb_helper.c
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drm_file.c
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drm_flip_work.c
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drm_format_helper.c
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drm_fourcc.c
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drm_framebuffer.c
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drm_gem_atomic_helper.c
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drm_gem_dma_helper.c
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drm_gem_framebuffer_helper.c
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drm_gem_shmem_helper.c
drm/shmem-helper: Fix BUG_ON() on mmap(PROT_WRITE, MAP_PRIVATE)
2024-10-22 15:56:44 +02:00
drm_gem_ttm_helper.c
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drm_gem_vram_helper.c
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drm_gem.c
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drm_hashtab.c
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drm_internal.h
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drm_ioc32.c
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drm_ioctl.c
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drm_irq.c
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drm_kms_helper_common.c
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drm_lease.c
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drm_legacy_misc.c
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drm_legacy.h
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drm_lock.c
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drm_managed.c
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drm_memory.c
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drm_mipi_dbi.c
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drm_mipi_dsi.c
drm/mipi-dsi: use correct return type for the DSC functions
2024-06-12 11:03:27 +02:00
drm_mm.c
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drm_mode_config.c
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drm_mode_object.c
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drm_modes.c
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drm_modeset_helper.c
drm: Check output polling initialized before disabling
2024-06-16 13:41:30 +02:00
drm_modeset_lock.c
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drm_nomodeset.c
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drm_of.c
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drm_panel_orientation_quirks.c
drm: panel-orientation-quirks: Add quirk for Ayn Loki Max
2024-09-18 19:23:02 +02:00
drm_panel.c
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drm_pci.c
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drm_plane_helper.c
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drm_plane.c
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drm_prime.c
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drm_print.c
drm/printer: Allow NULL data in devcoredump printer
2024-10-17 15:21:46 +02:00
drm_privacy_screen_x86.c
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drm_privacy_screen.c
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drm_probe_helper.c
drm: Check polling initialized before enabling in drm_helper_probe_single_connector_modes
2024-06-16 13:41:31 +02:00
drm_property.c
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drm_rect.c
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drm_scatter.c
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drm_self_refresh_helper.c
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drm_simple_kms_helper.c
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drm_syncobj.c
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drm_sysfs.c
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drm_trace_points.c
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drm_trace.h
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drm_vblank_work.c
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drm_vblank.c
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drm_vm.c
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drm_vma_manager.c
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drm_writeback.c
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Kconfig
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Makefile
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