Kevin Wang 26f0adb0b4 drm/amd/display: fix sysfs amdgpu_current_backlight_pwm NULL pointer issue ... [ Upstream commit a7b5d9dd57298333e6e9f4c167f01385d922bbfb ] fix NULL pointer issue when read sysfs amdgpu_current_backlight_pwm sysfs node. Call Trace: [ 248.273833] BUG: kernel NULL pointer dereference, address: 0000000000000130 [ 248.273930] #PF: supervisor read access in kernel mode [ 248.273993] #PF: error_code(0x0000) - not-present page [ 248.274054] PGD 0 P4D 0 [ 248.274092] Oops: 0000 [#1] SMP PTI [ 248.274138] CPU: 2 PID: 1377 Comm: cat Tainted: G OE 5.9.0-rc5-drm-next-5.9+ #1 [ 248.274233] Hardware name: System manufacturer System Product Name/Z170-A, BIOS 3802 03/15/2018 [ 248.274641] RIP: 0010:dc_link_get_backlight_level+0x5/0x70 [amdgpu] [ 248.274718] Code: 67 ff ff ff 41 b9 03 00 00 00 e9 45 ff ff ff d1 ea e9 55 ff ff ff 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <48> 8b 87 30 01 00 00 48 8b 00 48 8b 88 88 03 00 00 48 8d 81 e8 01 [ 248.274919] RSP: 0018:ffffb5ad809b3df0 EFLAGS: 00010203 [ 248.274982] RAX: ffffa0f77d1c0010 RBX: ffffa0f793ae9168 RCX: 0000000000000001 [ 248.275064] RDX: ffffa0f79753db00 RSI: 0000000000000001 RDI: 0000000000000000 [ 248.275145] RBP: ffffb5ad809b3e00 R08: ffffb5ad809b3da0 R09: 0000000000000000 [ 248.275225] R10: ffffb5ad809b3e68 R11: 0000000000000000 R12: ffffa0f793ae9190 [ 248.275306] R13: ffffb5ad809b3ef0 R14: 0000000000000001 R15: ffffa0f793ae9168 [ 248.275388] FS: 00007f5f1ec4d540(0000) GS:ffffa0f79ec80000(0000) knlGS:0000000000000000 [ 248.275480] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 248.275547] CR2: 0000000000000130 CR3: 000000042a03c005 CR4: 00000000003706e0 [ 248.275628] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 248.275708] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 248.275789] Call Trace: [ 248.276124] ? current_backlight_read+0x24/0x40 [amdgpu] [ 248.276194] seq_read+0xc3/0x3f0 [ 248.276240] full_proxy_read+0x5c/0x90 [ 248.276290] vfs_read+0xa7/0x190 [ 248.276334] ksys_read+0xa7/0xe0 [ 248.276379] __x64_sys_read+0x1a/0x20 [ 248.276429] do_syscall_64+0x37/0x80 [ 248.276477] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 248.276538] RIP: 0033:0x7f5f1e75c191 [ 248.276585] Code: fe ff ff 48 8d 3d b7 9d 0a 00 48 83 ec 08 e8 46 4d 02 00 66 0f 1f 44 00 00 48 8d 05 71 07 2e 00 8b 00 85 c0 75 13 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 57 f3 c3 0f 1f 44 00 00 41 54 55 49 89 d4 53Hw [ 248.276784] RSP: 002b:00007ffcb1fc3f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 248.276872] RAX: ffffffffffffffda RBX: 0000000000020000 RCX: 00007f5f1e75c191 [ 248.276953] RDX: 0000000000020000 RSI: 00007f5f1ec2b000 RDI: 0000000000000003 [ 248.277034] RBP: 0000000000020000 R08: 00000000ffffffff R09: 0000000000000000 [ 248.277115] R10: 0000000000000022 R11: 0000000000000246 R12: 00007f5f1ec2b000 [ 248.277195] R13: 0000000000000003 R14: 00007f5f1ec2b00f R15: 0000000000020000 [ 248.277279] Modules linked in: amdgpu(OE) iommu_v2 gpu_sched ttm(OE) drm_kms_helper cec drm i2c_algo_bit fb_sys_fops syscopyarea sysfillrect sysimgblt rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace fscache nls_iso8859_1 snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic ledtrig_audio intel_rapl_msr intel_rapl_common snd_hda_intel snd_intel_dspcfg x86_pkg_temp_thermal intel_powerclamp snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event mei_hdcp coretemp snd_rawmidi snd_seq kvm_intel kvm snd_seq_device snd_timer irqbypass joydev snd input_leds soundcore crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper rapl intel_cstate mac_hid mei_me serio_raw mei eeepc_wmi wmi_bmof asus_wmi mxm_wmi intel_wmi_thunderbolt acpi_pad sparse_keymap efi_pstore sch_fq_codel parport_pc ppdev lp parport sunrpc ip_tables x_tables autofs4 hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid e1000e psmouse ahci libahci wmi video [ 248.278211] CR2: 0000000000000130 [ 248.278221] ---[ end trace 1fbe72fe6f91091d ]--- [ 248.357226] RIP: 0010:dc_link_get_backlight_level+0x5/0x70 [amdgpu] [ 248.357272] Code: 67 ff ff ff 41 b9 03 00 00 00 e9 45 ff ff ff d1 ea e9 55 ff ff ff 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <48> 8b 87 30 01 00 00 48 8b 00 48 8b 88 88 03 00 00 48 8d 81 e8 01 Signed-off-by: Kevin Wang <kevin1.wang@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-01-19 18:27:26 +01:00
..
accessibility	speakup: fix uninitialized flush_lock	2020-12-30 11:53:44 +01:00
acpi	ACPI: scan: Harden acpi_device_add() against device ID overflows	2021-01-19 18:27:21 +01:00
amba
android	binder: add flag to clear buffer on txn complete	2020-12-30 11:54:09 +01:00
ata	libata-5.10-2020-10-30	2020-10-30 14:51:01 -07:00
atm	atm: idt77252: call pci_disable_device() on error path	2021-01-12 20:18:09 +01:00
auxdisplay
base	regmap: debugfs: Fix a reversed if statement in regmap_debugfs_init()	2021-01-17 14:17:06 +01:00
bcma
block	block/rnbd-clt: avoid module unload race with close confirmation	2021-01-17 14:17:05 +01:00
bluetooth	Bluetooth: revert: hci_h5: close serdev device and free hu in h5_close	2021-01-12 20:18:16 +01:00
bus	bus: fsl-mc: fix error return code in fsl_mc_object_allocate()	2020-12-30 11:53:46 +01:00
cdrom
char	um: random: Register random as hwrng-core device	2021-01-06 14:56:55 +01:00
clk	clk: tegra: Do not return 0 on failure	2020-12-30 11:54:26 +01:00
clocksource	clocksource/drivers/arm_arch_timer: Correct fault programming of CNTKCTL_EL1.EVNTI	2020-12-30 11:53:37 +01:00
connector
counter	counter: microchip-tcb-capture: Fix CMR value check	2020-12-30 11:54:26 +01:00
cpufreq	cpufreq: powernow-k8: pass policy rather than use cpufreq_cpu_get()	2021-01-17 14:17:00 +01:00
cpuidle	cpuidle: tegra: Annotate tegra_pm_set_cpu_in_lp2() with RCU_NONIDLE	2020-11-16 13:24:32 +01:00
crypto	crypto: atmel-i2c - select CONFIG_BITREVERSE	2020-12-30 11:53:50 +01:00
dax	device-dax: Fix range release	2021-01-06 14:56:56 +01:00
dca
devfreq
dio
dma	dmaengine: xilinx_dma: fix mixed_enum_type coverity warning	2021-01-17 14:17:02 +01:00
dma-buf	dmabuf: fix use-after-free of dmabuf's file->f_inode	2021-01-12 20:18:24 +01:00
edac	EDAC/amd64: Fix PCI component registration	2020-12-30 11:54:11 +01:00
eisa
extcon	extcon: max77693: Fix modalias string	2020-12-30 11:53:49 +01:00
firewire
firmware	mm/gup: prevent gup_fast from racing with COW during fork	2020-12-30 11:53:54 +01:00
fpga	fpga: Specify HAS_IOMEM dependency for FPGA_DFL	2020-12-01 18:46:24 +01:00
fsi	fsi: Aspeed: Add mutex to protect HW access	2020-12-30 11:53:46 +01:00
gnss
gpio	gpiolib: irq hooks: fix recursion in gpiochip_irq_unmask	2020-12-30 11:53:51 +01:00
gpu	drm/amd/display: fix sysfs amdgpu_current_backlight_pwm NULL pointer issue	2021-01-19 18:27:26 +01:00
greybus
hid	HID: wacom: Fix memory leakage caused by kfifo_alloc	2021-01-17 14:16:59 +01:00
hsi	HSI: omap_ssi: Don't jump to free ID in ssi_add_controller()	2020-12-30 11:53:24 +01:00
hv	hyperv-fixes for 5.10-rc5	2020-11-16 15:02:33 -08:00
hwmon	hwmon: (pwm-fan) Ensure that calculation doesn't discard big period values	2021-01-19 18:27:25 +01:00
hwspinlock
hwtracing	coresight: remove broken __exit annotations	2020-12-30 11:53:44 +01:00
i2c	i2c: mediatek: Fix apdma and i2c hand-shake timeout	2021-01-17 14:17:01 +01:00
i3c	i3c master: fix missing destroy_workqueue() on error in i3c_master_register	2021-01-06 14:56:53 +01:00
ide	scsi: ide: Mark power management requests with RQF_PM instead of RQF_PREEMPT	2021-01-12 20:18:15 +01:00
idle	intel_idle: Build fix	2020-12-03 10:00:23 +01:00
iio	iio:adc:ti-ads124s08: Fix alignment and data leak issues.	2020-12-30 11:54:25 +01:00
infiniband	RDMA/ocrdma: Fix use after free in ocrdma_dealloc_ucontext_pd()	2021-01-19 18:27:21 +01:00
input	Input: cyapa_gen6 - fix out-of-bounds stack access	2020-12-30 11:54:05 +01:00
interconnect	interconnect: qcom: fix rpmh link failures	2021-01-17 14:17:01 +01:00
iommu	iommu/intel: Fix memleak in intel_irq_remapping_alloc	2021-01-17 14:17:03 +01:00
ipack
irqchip	irqchip/qcom-pdc: Fix phantom irq when changing between rising/falling	2020-12-30 11:53:51 +01:00
isdn	misdn: dsp: select CONFIG_BITREVERSE	2021-01-19 18:27:26 +01:00
leds	leds: turris-omnia: check for LED_COLOR_ID_RGB instead LED_COLOR_ID_MULTI	2020-12-30 11:53:22 +01:00
lightnvm	lightnvm: select CONFIG_CRC32	2021-01-17 14:17:03 +01:00
macintosh	macintosh/adb-iop: Send correct poll command	2020-12-30 11:53:39 +01:00
mailbox	mailbox: arm_mhu_db: Fix mhu_db_shutdown by replacing kfree with devm_kfree	2020-12-30 11:53:28 +01:00
mcb
md	dm crypt: defer decryption to a tasklet if interrupts disabled	2021-01-19 18:27:22 +01:00
media	media: gp8psk: initialize stats at power control logic	2021-01-06 14:56:52 +01:00
memory	memory: renesas-rpc-if: Fix unbalanced pm_runtime_enable in rpcif_{enable,disable}_rpm	2020-12-30 11:54:27 +01:00
memstick	memstick: r592: Fix error return in r592_probe()	2020-12-30 11:53:34 +01:00
message	scsi: mptfusion: Fix null pointer dereferences in mptscsih_remove()	2020-10-26 16:57:18 -04:00
mfd	mfd: cpcap: Fix interrupt regression with regmap clear_ack	2020-12-30 11:53:16 +01:00
misc	habanalabs: Fix memleak in hl_device_reset	2021-01-19 18:27:25 +01:00
mmc	mmc: pxamci: Fix error return code in pxamci_probe	2020-12-30 11:53:20 +01:00
most
mtd	Revert "mtd: spinand: Fix OOB read"	2021-01-09 13:46:22 +01:00
mux
net	net: ethernet: fs_enet: Add missing MODULE_LICENSE	2021-01-19 18:27:26 +01:00
nfc	nfc: s3fwrn5: Release the nfc firmware	2020-12-30 11:53:53 +01:00
ntb	Bug fixes for v5.10	2020-10-25 11:12:31 -07:00
nubus
nvdimm	libnvdimm/namespace: Fix reaping of invalidated block-window-namespace labels	2020-12-30 11:54:27 +01:00
nvme	nvmet-rdma: Fix list_del corruption on queue establishment failure	2021-01-19 18:27:26 +01:00
nvmem
of	of/address: Fix of_node memory leak in of_dma_is_coherent	2020-11-11 17:10:16 -06:00
opp	opp: Call the missing clk_put() on error	2021-01-06 14:56:49 +01:00
oprofile
parisc
parport
pci	PCI: Fix pci_slot_release() NULL pointer dereference	2020-12-30 11:54:28 +01:00
pcmcia
perf
phy	drm/mediatek: avoid dereferencing a null hdmi_phy on an error message	2020-12-30 11:53:43 +01:00
pinctrl	pinctrl: sunxi: Always call chained_irq_{enter, exit} in sunxi_pinctrl_irq_handler	2020-12-30 11:54:25 +01:00
platform	platform/x86: intel-vbtn: Allow switch events on Acer Switch Alpha 12	2020-12-30 11:54:28 +01:00
pnp	PNP: fix kernel-doc markups	2020-10-27 19:23:04 +01:00
power	power: supply: bq24190_charger: fix reference leak	2020-12-30 11:53:25 +01:00
powercap	Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2020-11-10 10:02:31 -08:00
pps
ps3	powerpc/ps3: use dma_mapping_error()	2020-12-30 11:53:53 +01:00
ptp	phy: dp83640: select CONFIG_CRC32	2021-01-17 14:17:02 +01:00
pwm	pwm: sun4i: Remove erroneous else branch	2020-12-30 11:53:59 +01:00
rapidio	rapidio: fix the missed put_device() for rio_mport_add_riodev	2020-10-16 11:11:22 -07:00
ras
regulator	regulator: bd718x7: Add enable times	2021-01-19 18:27:24 +01:00
remoteproc	remoteproc: sysmon: Ensure remote notification ordering	2020-12-30 11:54:28 +01:00
reset	ARM: SoC-related driver updates	2020-10-24 10:39:22 -07:00
rpmsg	rpmsg updates for 5.10	2020-10-22 12:58:21 -07:00
rtc	rtc: pcf2127: only use watchdog when explicitly available	2021-01-09 13:46:22 +01:00
s390	s390/qeth: fix L2 header access in qeth_l3_osa_features_check()	2021-01-17 14:16:58 +01:00
sbus
scsi	scsi: lpfc: Fix variable 'vport' set but not used in lpfc_sli4_abts_err_handler()	2021-01-17 14:16:59 +01:00
sfi
sh
siox
slimbus	slimbus: qcom: fix potential NULL dereference in qcom_slim_prg_slew()	2020-12-30 11:53:47 +01:00
soc	soc: qcom: smp2p: Safely acquire spinlock without IRQs	2020-12-30 11:54:22 +01:00
soundwire	soundwire: master: use pm_runtime_set_active() on add	2020-12-30 11:53:28 +01:00
spi	spi: fix the divide by 0 error when calculating xfer waiting time	2021-01-19 18:27:25 +01:00
spmi
ssb
staging	staging: spmi: hisi-spmi-controller: Fix some error handling paths	2021-01-19 18:27:25 +01:00
target	scsi: target: Fix XCOPY NAA identifier lookup	2021-01-12 20:18:27 +01:00
tc
tee	ARM: SoC fixes for v5.10, part 3	2020-11-27 14:48:03 -08:00
thermal	thermal/drivers/cpufreq_cooling: Update cpufreq_state only if state has changed	2020-12-30 11:54:29 +01:00
thunderbolt	thunderbolt: Fix use-after-free in remove_unplugged_switch()	2020-11-19 17:44:10 +03:00
tty	m68k: Fix WARNING splat in pmac_zilog driver	2020-12-30 11:54:11 +01:00
uio	uio: Fix use-after-free in uio_unregister_device()	2020-11-09 18:54:30 +01:00
usb	USB: serial: keyspan_pda: remove unused variable	2021-01-12 20:18:22 +01:00
vdpa	vdpa/mlx5: Use write memory barrier after updating CQ index	2020-12-30 11:54:00 +01:00
vfio	vfio/pci/nvlink2: Do not attempt NPU2 setup on POWER8NVL NPU	2020-12-30 11:54:03 +01:00
vhost	vhost_net: fix ubuf refcount incorrectly when sendmsg fails	2021-01-12 20:18:13 +01:00
video	fbcon: Disable accelerated scrolling	2021-01-06 14:56:51 +01:00
virt	nitro_enclaves: Fixup type and simplify logic of the poll mask setup	2020-11-09 18:20:36 +01:00
virtio	virtio_ring: Fix two use after free bugs	2020-12-30 11:54:00 +01:00
visorbus
vlynq
vme
w1
watchdog	watchdog: rti-wdt: fix reference leak in rti_wdt_probe	2021-01-06 14:56:54 +01:00
xen	xen/privcmd: allow fetching resource sizes	2021-01-19 18:27:21 +01:00
zorro
Kconfig
Makefile	vdpa: mlx5: fix vdpa/vhost dependencies	2020-12-02 04:09:56 -05:00