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kernel_samsung_a53x/drivers/gpu/drm
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Abhinav Singh 4469e03fa9 drm/nouveau/fence:: fix warning directly dereferencing a rcu pointer 
[ Upstream commit 5f35a624c1e30b5bae5023b3c256e94e0ad4f806 ]

Fix a sparse warning with this message
"warning:dereference of noderef expression". In this context it means we
are dereferencing a __rcu tagged pointer directly.

We should not be directly dereferencing a rcu pointer. To get a normal
(non __rcu tagged pointer) from a __rcu tagged pointer we are using the
function unrcu_pointer(...). The non __rcu tagged pointer then can be
dereferenced just like a normal pointer.

I tested with qemu with this command
qemu-system-x86_64 \
	-m 2G \
	-smp 2 \
	-kernel bzImage \
	-append "console=ttyS0 root=/dev/sda earlyprintk=serial net.ifnames=0" \
	-drive file=bullseye.img,format=raw \
	-net user,host=10.0.2.10,hostfwd=tcp:127.0.0.1:10021-:22 \
	-net nic,model=e1000 \
	-enable-kvm \
	-nographic \
	-pidfile vm.pid \
	2>&1 | tee vm.log
with lockdep enabled.

Fixes: 0ec5f02f0e2c ("drm/nouveau: prevent stale fence->channel pointers, and protect with rcu")
Signed-off-by: Abhinav Singh <singhabhinav9051571833@gmail.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231113191303.3277733-1-singhabhinav9051571833@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-18 12:12:39 +01:00
..
amd drm/amdgpu: Fix cat debugfs amdgpu_regs_didt causes kernel null pointer 2024-11-18 12:12:12 +01:00
arc Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
arm drm/komeda: drop all currently held locks if deadlock happens 2024-11-18 11:43:13 +01:00
armada Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
aspeed Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ast Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
atmel-hlcdc Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bochs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bridge drm/bridge: tc358768: Fix bit updates 2024-11-18 11:42:55 +01:00
etnaviv Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
exynos drm/exynos: fix a wrong error checking 2024-11-18 12:12:15 +01:00
fsl-dcu Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gma500 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hisilicon Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
i2c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
i810 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
i915 drm/i915/dp: Fix passing the correct DPCD_REV for drm_dp_set_phy_test_pattern 2024-11-18 12:12:06 +01:00
imx Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ingenic Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
lib Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
lima Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mcde Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mediatek drm/mediatek: Add spinlock for setting vblank event in atomic_begin 2024-11-18 12:11:56 +01:00
meson Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mga Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mgag200 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
msm drm/msm/dp: skip validity check for DP CTS EDID checksum 2024-11-18 11:43:13 +01:00
mxsfb Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nouveau drm/nouveau/fence:: fix warning directly dereferencing a rcu pointer 2024-11-18 12:12:39 +01:00
omapdrm Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
panel drm/panel-elida-kd35t133: hold panel in reset for unprepare 2024-11-18 12:12:38 +01:00
panfrost Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pl111 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
qxl drm/qxl: fix UAF on handle creation 2024-11-18 12:12:11 +01:00
r128 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
radeon drm/radeon: possible buffer overflow 2024-11-18 11:42:55 +01:00
rcar-du Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
rockchip drm/rockchip: vop: Fix color for RGB888/BGR888 format on VOP full 2024-11-18 12:10:54 +01:00
samsung exynos_gpu: Don't allow userspace to control freqs 2024-06-15 16:28:49 -03:00
savage Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
scheduler Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
selftests Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
shmobile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sis Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sti Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
stm Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sun4i Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tdfx Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tegra Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tidss Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tilcdc Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tiny Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ttm Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tve200 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
udl Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
v3d Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vboxvideo Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vc4 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vgem Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
via Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
virtio Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vkms Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vmwgfx drm/vmwgfx: fix typo of sizeof argument 2024-11-08 11:25:46 +01:00
xen Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xlnx Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
zte Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_agpsupport.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_atomic.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_atomic_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_atomic_state_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_atomic_uapi.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_auth.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_blend.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_bridge.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_bridge_connector.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_bufs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_cache.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_client.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_client_modeset.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_color_mgmt.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_connector.c drm/connector: Add support for out-of-band hotplug notification (v3) 2024-11-08 11:26:15 +01:00
drm_context.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_crtc.c drm/crtc: fix uninitialized variable use 2024-11-18 12:12:18 +01:00
drm_crtc_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_crtc_helper_internal.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_crtc_internal.h drm/connector: Add drm_connector_find_by_fwnode() function (v3) 2024-11-08 11:26:15 +01:00
drm_damage_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_debugfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_debugfs_crc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_dma.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_dp_aux_dev.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_dp_cec.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_dp_dual_mode_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_dp_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_dp_mst_topology.c drm/dp_mst: Fix NULL deref in get_mst_branch_device_by_guid_helper() 2024-11-18 10:58:29 +01:00
drm_dp_mst_topology_internal.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_drv.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_dsc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_dumb_buffers.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_edid.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_edid_load.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_encoder.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_encoder_slave.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_fb_cma_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_fb_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_file.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_flip_work.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_format_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_fourcc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_framebuffer.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_gem.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_gem_cma_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_gem_framebuffer_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_gem_shmem_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_gem_ttm_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_gem_vram_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_hashtab.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_hdcp.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_internal.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_ioc32.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_ioctl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_irq.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_kms_helper_common.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_lease.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_legacy.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_legacy_misc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_lock.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_managed.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_memory.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_mipi_dbi.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_mipi_dsi.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_mm.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_mode_config.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_mode_object.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_modes.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_modeset_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_modeset_lock.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_of.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_panel.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_panel_orientation_quirks.c drm: panel-orientation-quirks: Add quirk for One Mix 2S 2024-11-08 11:26:17 +01:00
drm_pci.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_plane.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_plane_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_prime.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_print.c drm: Stub out debug prints 2024-11-17 17:45:26 +01:00
drm_probe_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_property.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_rect.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_scatter.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_scdc_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_self_refresh_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_simple_kms_helper.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_syncobj.c drm/syncobj: fix DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE 2024-11-18 11:43:11 +01:00
drm_sysfs.c drm/connector: Add a fwnode pointer to drm_connector and register with ACPI (v2) 2024-11-08 11:26:14 +01:00
drm_trace.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_trace_points.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_vblank.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_vblank_work.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_vm.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_vma_manager.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
drm_writeback.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00