Huacai Chen 366e77cd49 drm/amd/display: Protect FPU in dml2_validate()/dml21_validate() ... Commit 7da55c27e7 ("drm/amd/display: Remove incorrect FP context start") removes the FP context protection of dml2_create(), and it said "All the DC_FP_START/END should be used before call anything from DML2". However, dml2_validate()/dml21_validate() are not protected from their callers, causing such errors: do_fpu invoked from kernel context![#1]: CPU: 10 UID: 0 PID: 331 Comm: kworker/10:1H Not tainted 6.14.0-rc6+ #4 Workqueue: events_highpri dm_irq_work_func [amdgpu] pc ffff800003191eb0 ra ffff800003191e60 tp 9000000107a94000 sp 9000000107a975b0 a0 9000000140ce4910 a1 0000000000000000 a2 9000000140ce49b0 a3 9000000140ce49a8 a4 9000000140ce49a8 a5 0000000100000000 a6 0000000000000001 a7 9000000107a97660 t0 ffff800003790000 t1 9000000140ce5000 t2 0000000000000001 t3 0000000000000000 t4 0000000000000004 t5 0000000000000000 t6 0000000000000000 t7 0000000000000000 t8 0000000100000000 u0 ffff8000031a3b9c s9 9000000130bc0000 s0 9000000132400000 s1 9000000140ec0000 s2 9000000132400000 s3 9000000140ce0000 s4 90000000057f8b88 s5 9000000140ec0000 s6 9000000140ce4910 s7 0000000000000001 s8 9000000130d45010 ra: ffff800003191e60 dml21_map_dc_state_into_dml_display_cfg+0x40/0x1140 [amdgpu] ERA: ffff800003191eb0 dml21_map_dc_state_into_dml_display_cfg+0x90/0x1140 [amdgpu] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE) PRMD: 00000004 (PPLV0 +PIE -PWE) EUEN: 00000000 (-FPE -SXE -ASXE -BTE) ECFG: 00071c1d (LIE=0,2-4,10-12 VS=7) ESTAT: 000f0000 [FPD] (IS= ECode=15 EsubCode=0) PRID: 0014d010 (Loongson-64bit, Loongson-3C6000/S) Process kworker/10:1H (pid: 331, threadinfo=000000007bf9ddb0, task=00000000cc4ab9f3) Stack : 0000000100000000 0000043800000780 0000000100000001 0000000100000001 0000000000000000 0000078000000000 0000000000000438 0000078000000000 0000000000000438 0000078000000000 0000000000000438 0000000100000000 0000000100000000 0000000100000000 0000000100000000 0000000100000000 0000000000000001 9000000140ec0000 9000000132400000 9000000132400000 ffff800003408000 ffff800003408000 9000000132400000 9000000140ce0000 9000000140ce0000 ffff800003193850 0000000000000001 9000000140ec0000 9000000132400000 9000000140ec0860 9000000140ec0738 0000000000000001 90000001405e8000 9000000130bc0000 9000000140ec02a8 ffff8000031b5db8 0000000000000000 0000043800000780 0000000000000003 ffff8000031b79cc ... Call Trace: [<ffff800003191eb0>] dml21_map_dc_state_into_dml_display_cfg+0x90/0x1140 [amdgpu] [<ffff80000319384c>] dml21_validate+0xcc/0x520 [amdgpu] [<ffff8000031b8948>] dc_validate_global_state+0x2e8/0x460 [amdgpu] [<ffff800002e94034>] create_validate_stream_for_sink+0x3d4/0x420 [amdgpu] [<ffff800002e940e4>] amdgpu_dm_connector_mode_valid+0x64/0x240 [amdgpu] [<900000000441d6b8>] drm_connector_mode_valid+0x38/0x80 [<900000000441d824>] __drm_helper_update_and_validate+0x124/0x3e0 [<900000000441ddc0>] drm_helper_probe_single_connector_modes+0x2e0/0x620 [<90000000044050dc>] drm_client_modeset_probe+0x23c/0x1780 [<9000000004420384>] __drm_fb_helper_initial_config_and_unlock+0x44/0x5a0 [<9000000004403acc>] drm_client_dev_hotplug+0xcc/0x140 [<ffff800002e9ab50>] handle_hpd_irq_helper+0x1b0/0x1e0 [amdgpu] [<90000000038f5da0>] process_one_work+0x160/0x300 [<90000000038f6718>] worker_thread+0x318/0x440 [<9000000003901b8c>] kthread+0x12c/0x220 [<90000000038b1484>] ret_from_kernel_thread+0x8/0xa4 Unfortunately, protecting dml2_validate()/dml21_validate() out of DML2 causes "sleeping function called from invalid context", so protect them with DC_FP_START() and DC_FP_END() inside. Fixes: 7da55c27e7 ("drm/amd/display: Remove incorrect FP context start") Cc: stable@vger.kernel.org Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Tested-by: Dongyan Qian <qiandongyan@loongson.cn> Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>		2025-04-07 14:36:50 -04:00
..
accel
accessibility
acpi	ACPI: platform_profile: Add support for hidden choices	2025-03-04 20:45:34 +01:00
amba
android
ata	ata fixes for 6.14-rc5	2025-03-01 08:59:29 -08:00
atm
auxdisplay
base	Linux 6.14-rc6	2025-03-12 09:43:12 +10:00
bcma
block	block-6.14-20250306	2025-03-07 11:12:33 -10:00
bluetooth	bluetooth: btusb: Initialize .owner field of force_poll_sync_fops	2025-02-27 16:50:05 -05:00
bus	Linux 6.14-rc6	2025-03-12 09:43:12 +10:00
cache
cdrom
cdx
char	Char/Misc/IIO driver fixes for 6.14-rc6	2025-03-09 09:07:54 -10:00
clk
clocksource
comedi
connector
counter
cpufreq
cpuidle
crypto
cxl
dax
dca
devfreq
dio
dma	dmaengine fixes for v6.14	2025-03-02 10:08:45 -08:00
dma-buf
dpll
edac
eisa
extcon
firewire
firmware	EFI fixes for v6.14 #2	2025-02-28 08:47:21 -08:00
fpga
fsi
gnss
gpio	gpio: rcar: Fix missing of_node_put() call	2025-03-06 15:51:27 +01:00
gpu	drm/amd/display: Protect FPU in dml2_validate()/dml21_validate()	2025-04-07 14:36:50 -04:00
greybus
hid	hid-for-linus-2025030501	2025-03-05 07:46:59 -10:00
hsi
hte
hv
hwmon	hwmon: fix a NULL vs IS_ERR_OR_NULL() check in xgene_hwmon_probe()	2025-03-03 06:04:34 -08:00
hwspinlock
hwtracing
i2c
i3c
idle	intel_idle: Handle older CPUs, which stop the TSC in deeper C states, correctly	2025-02-28 22:04:26 +01:00
iio
infiniband
input
interconnect
iommu	iommu/vt-d: Fix suspicious RCU usage	2025-02-28 12:19:01 +01:00
ipack
irqchip
isdn
leds
macintosh
mailbox
mcb
md
media
memory
memstick
message
mfd
misc	Revert "drivers/card_reader/rtsx_usb: Restore interrupt based detection"	2025-02-27 12:24:53 -08:00
mmc
most
mtd
mux
net	mctp i3c: handle NULL header address	2025-03-06 10:33:07 +01:00
nfc
ntb
nubus
nvdimm
nvme	nvme-tcp: fix signedness bug in nvme_tcp_init_connection()	2025-03-05 10:37:01 -08:00
nvmem
of
opp
parisc
parport
pci
pcmcia
peci
perf
phy
pinctrl
platform	ACPI fix for 6.14-rc6	2025-03-07 12:17:42 -10:00
pmdomain
pnp
power
powercap
pps
ps3
ptp
pwm
rapidio	rapidio: add check for rio_add_net() in rio_scan_alloc_net()	2025-03-05 21:36:19 -08:00
ras
regulator
remoteproc
reset
rpmsg
rtc
s390
sbus
scsi
sh
siox
slimbus
soc
soundwire
spi
spmi
ssb
staging	fbtft: Remove access to page->index	2025-03-05 08:38:21 +01:00
target
tc
tee
thermal
thunderbolt
tty
ufs
uio
usb	usb: typec: ucsi: Fix NULL pointer access	2025-03-06 16:55:46 +01:00
vdpa
vfio
vhost	vhost: return task creation error instead of NULL	2025-03-01 02:52:52 -05:00
video	gpu: nova-core: add initial driver stub	2025-03-09 19:24:27 +01:00
virt	Char/Misc/IIO driver fixes for 6.14-rc6	2025-03-09 09:07:54 -10:00
virtio
w1
watchdog
xen
zorro
Kconfig
Makefile