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Lv Yunlong ac69496fe6 drm/i915/gt: Fix a double free in gen8_preallocate_top_level_pdp 
Our code analyzer reported a double free bug.

In gen8_preallocate_top_level_pdp, pde and pde->pt.base are allocated
via alloc_pd(vm) with one reference. If pin_pt_dma() failed, pde->pt.base
is freed by i915_gem_object_put() with a reference dropped. Then free_pd
calls free_px() defined in intel_ppgtt.c, which calls i915_gem_object_put()
to put pde->pt.base again.

As pde->pt.base is protected by refcount, so the second put will not free
pde->pt.base actually. But, maybe it is better to remove the first put?

Fixes: 82adf901138cc ("drm/i915/gt: Shrink i915_page_directory's slab bucket")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210426124340.4238-1-lyl2019@mail.ustc.edu.cn
2021-04-27 10:20:46 +01:00
..
accessibility
Char/Misc driver patches for 5.12-rc1
2021-02-24 10:25:37 -08:00
acpi
Additional ACPI updates for v5.12-rc1
2021-02-25 12:03:13 -08:00
amba
amba: Make use of bus_type functions
2021-02-02 14:26:02 +01:00
android
fs: make helpers idmap mount aware
2021-01-24 14:27:20 +01:00
ata
ata: Avoid comma separated statements
2021-01-31 08:05:46 -07:00
atm
atm: idt77252: fix null-ptr-dereference
2021-03-08 15:16:30 -08:00
auxdisplay
treewide: Miguel has moved
2021-02-26 09:41:03 -08:00
base
software node: Fix device_add_software_node()
2021-03-10 15:25:02 +01:00
bcma
…
block
Merge branch 'akpm' (patches from Andrew)
2021-03-14 12:23:34 -07:00
bluetooth
TTY/Serial driver changes for 5.12-rc1
2021-02-20 21:28:04 -08:00
bus
Char/Misc driver patches for 5.12-rc1
2021-02-24 10:25:37 -08:00
cdrom
block: remove unnecessary argument from blk_execute_rq
2021-01-24 21:52:39 -07:00
char
powerpc fixes for 5.12 #2
2021-03-07 13:24:44 -08:00
clk
RISC-V Patches for the 5.12 Merge Window
2021-02-26 10:28:35 -08:00
clocksource
A small set of clockevent fixes which fell through the cracks
2021-02-22 14:11:36 -08:00
connector
…
counter
…
cpufreq
cpufreq: blacklist Arm Vexpress platforms in cpufreq-dt-platdev
2021-03-08 16:20:07 +05:30
cpuidle
…
crypto
vio: make remove callback return void
2021-03-02 22:41:23 +11:00
cxl
cxl/mem: Fix potential memory leak
2021-02-22 14:44:39 -08:00
dax
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2021-02-27 08:07:12 -08:00
dca
…
devfreq
Merge branches 'pm-devfreq' and 'pm-tools'
2021-02-15 17:02:04 +01:00
dio
…
dma
dmaengine updates for v5.12-rc1
2021-02-23 15:05:10 -08:00
dma-buf
drm-misc-next for 5.13:
2021-03-16 17:08:46 +10:00
edac
Merge branch 'edac-misc' into edac-updates-for-v5.12
2021-02-15 10:06:58 +01:00
eisa
…
extcon
…
firewire
firewire: replace tricky statement by two simple ones
2021-02-09 12:16:20 +01:00
firmware
EFI fix for 5.12-rc2
2021-03-14 12:54:56 -07:00
fpga
…
fsi
…
gnss
…
gpio
gpiolib: Read "gpio-line-names" from a firmware node
2021-03-08 11:59:17 +01:00
gpu
drm/i915/gt: Fix a double free in gen8_preallocate_top_level_pdp
2021-04-27 10:20:46 +01:00
greybus
greybus: es2: drop short control-transfer checks
2021-01-26 19:20:11 +01:00
hid
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
2021-02-23 14:52:22 -08:00
hsi
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hv
mm/memory_hotplug: MEMHP_MERGE_RESOURCE -> MHP_MERGE_RESOURCE
2021-02-26 09:41:00 -08:00
hwmon
Devicetree updates for v5.12:
2021-02-22 10:05:12 -08:00
hwspinlock
hwspinlock: omap: Add support for K3 AM64x SoCs
2021-02-09 11:36:50 -06:00
hwtracing
ARM updates for 5.12-rc1:
2021-02-22 14:27:07 -08:00
i2c
i2c: exynos5: Preserve high speed master code
2021-02-26 11:47:42 +01:00
i3c
I3C for 5.12
2021-02-22 09:52:55 -08:00
ide
ide-5.11-2021-02-28
2021-02-28 15:48:25 -08:00
idle
intel_idle: remove definition of DEBUG
2021-01-22 16:46:16 +01:00
iio
- Use the newly introduced 'hot' and 'critical' ops for the acpi
2021-02-22 09:39:11 -08:00
infiniband
RDMA/rxe: Fix errant WARN_ONCE in rxe_completer()
2021-03-05 14:15:22 -04:00
input
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2021-02-23 14:56:23 -08:00
interconnect
Merge branch 'icc-sdx55' into icc-next
2021-02-01 14:26:57 +02:00
iommu
IOMMU Fixes for Linux v5.12-rc1
2021-03-05 12:26:24 -08:00
ipack
ipack: Handle a driver without remove callback
2021-02-09 09:48:23 +01:00
irqchip
irqchip/ingenic: Add support for the JZ4760
2021-03-09 08:45:17 +00:00
isdn
…
leds
leds: trigger/tty: Use led_set_brightness_sync() from workqueue
2021-03-10 09:27:56 +01:00
lightnvm
lightnvm: pblk: Replace guid_copy() with export_guid()/import_guid()
2021-02-14 21:27:24 -07:00
macintosh
macintosh/adb-iop: Use big-endian autopoll mask
2021-01-25 13:23:38 +01:00
mailbox
mailbox: arm_mhuv2: Skip calling kfree() with invalid pointer
2021-02-22 13:34:27 -06:00
mcb
…
md
block-5.12-2021-03-12-v2
2021-03-12 13:25:49 -08:00
media
drm-misc-next for 5.13:
2021-03-16 17:08:46 +10:00
memory
Char/Misc driver patches for 5.12-rc1
2021-02-24 10:25:37 -08:00
memstick
…
message
scsi: message: fusion: Fix 'physical' typos
2021-01-26 23:25:16 -05:00
mfd
Simple Firmware Interface (SFI) support removal for v5.12-rc1
2021-02-24 10:35:29 -08:00
misc
Char/misc driver fixes for 5.12-rc3
2021-03-13 12:38:44 -08:00
mmc
mmc: cqhci: Fix random crash when remove mmc module/card
2021-03-09 10:00:52 +01:00
most
most: core: Constify static attribute_group structs
2021-01-26 19:24:51 +01:00
mtd
This pull request contains changes (actually just fixes) for UBIFS
2021-02-21 13:57:08 -08:00
mux
…
net
Merge git://git.kernel.org:/pub/scm/linux/kernel/git/netdev/net
2021-03-09 17:15:56 -08:00
nfc
Char/Misc driver patches for 5.12-rc1
2021-02-24 10:25:37 -08:00
ntb
NTB: Add support for EPF PCI Non-Transparent Bridge
2021-02-23 14:12:53 -06:00
nubus
…
nvdimm
libnvdimm + device-dax for 5.12
2021-02-24 09:35:54 -08:00
nvme
nvme: fix the nsid value to print in nvme_validate_or_alloc_ns
2021-03-12 13:17:45 -07:00
nvmem
nvmem: qcom-spmi-sdam: Fix uninitialized pdev pointer
2021-02-05 11:25:52 +01:00
of
Char/Misc driver patches for 5.12-rc1
2021-02-24 10:25:37 -08:00
opp
opp: Don't drop extra references to OPPs accidentally
2021-03-12 09:26:52 +05:30
parisc
…
parport
…
pci
xen: branch for v5.12-rc3
2021-03-12 11:34:36 -08:00
pcmcia
Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux
2021-02-26 13:54:43 -08:00
perf
perf/arm_dmc620_pmu: Fix error return code in dmc620_pmu_device_probe()
2021-03-12 11:30:31 +00:00
phy
phy: second round of phy fixes for v5.11
2021-02-10 10:39:23 +01:00
pinctrl
RISC-V Patches for the 5.12 Merge Window
2021-02-26 10:28:35 -08:00
platform
Additional ACPI updates for v5.12-rc1
2021-02-25 12:03:13 -08:00
pnp
PNP: pnpbios: Use DEFINE_SPINLOCK() for spinlock
2021-01-22 16:22:57 +01:00
power
power-supply: use kobj_to_dev()
2021-01-28 01:31:42 +01:00
powercap
powercap/drivers/dtpm: Add the experimental label to the option description
2021-03-01 17:43:29 +01:00
pps
…
ps3
…
ptp
ptp: ptp_clockmatrix: clean-up - parenthesis around a == b are unnecessary
2021-02-17 13:49:26 -08:00
pwm
pwm: Changes for v5.12-rc1
2021-02-25 12:23:49 -08:00
rapidio
…
ras
…
regulator
regulator: mt6315: Fix off-by-one for .n_voltages
2021-03-11 13:23:21 +00:00
remoteproc
remoteproc: qcom: pas: Add SM8350 PAS remoteprocs
2021-02-11 12:52:18 -06:00
reset
RISC-V Patches for the 5.12 Merge Window
2021-02-26 10:28:35 -08:00
rpmsg
…
rtc
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2021-02-27 08:07:12 -08:00
s390
block-5.12-2021-03-12-v2
2021-03-12 13:25:49 -08:00
sbus
…
scsi
SCSI fixes on 20210312
2021-03-12 13:37:18 -08:00
sh
…
siox
…
slimbus
…
soc
OpenRISC updates for 5.12
2021-02-26 14:16:06 -08:00
soundwire
ALSA: hda: move Intel SoundWire ACPI scan to dedicated module
2021-03-02 15:33:00 +01:00
spi
powerpc updates for 5.12
2021-02-22 14:34:00 -08:00
spmi
spmi: spmi-pmic-arb: Fix hw_irq overflow
2021-02-12 12:26:46 +01:00
ssb
…
staging
Revert "staging: wfx: remove unused included header files"
2021-03-10 09:23:30 +01:00
target
SCSI misc on 20210228
2021-02-28 11:51:20 -08:00
tc
…
tee
Simplify i2c acess in OP-TEE driver
2021-02-09 16:10:49 +01:00
thermal
- Use the newly introduced 'hot' and 'critical' ops for the acpi
2021-02-22 09:39:11 -08:00
thunderbolt
thunderbolt: Changes for v5.12 merge window
2021-02-09 13:00:07 +01:00
tty
TTY/Serial fixes for 5.12-rc3
2021-03-13 12:34:29 -08:00
uio
uio: uio_pci_generic: don't fail probe if pdev->irq equals to IRQ_NOTCONNECTED
2021-02-09 12:25:32 +01:00
usb
USB fixes for 5.12-rc3
2021-03-13 12:32:57 -08:00
vdpa
vdpa/mlx5: fix param validation in mlx5_vdpa_get_config()
2021-02-23 07:52:59 -05:00
vfio
VFIO updates for v5.12-rc1
2021-02-24 10:43:40 -08:00
vhost
virtio: features, fixes
2021-02-25 12:21:08 -08:00
video
fbdev: omapfb: avoid -Wempty-body warning
2021-03-22 15:02:14 +01:00
virt
virt: acrn: Correct type casting of argument of copy_from_user()
2021-03-10 16:59:50 +01:00
virtio
Merge branch 'akpm' (patches from Andrew)
2021-02-26 09:50:09 -08:00
visorbus
…
vlynq
…
vme
vme: make remove callback return void
2021-02-09 12:15:07 +01:00
w1
w1: w1_therm: Fix conversion result for negative temperatures
2021-01-27 14:59:16 +01:00
watchdog
Char/Misc driver patches for 5.12-rc1
2021-02-24 10:25:37 -08:00
xen
xen: branch for v5.12-rc3
2021-03-12 11:34:36 -08:00
zorro
…
Kconfig
cxl/mem: Introduce a driver for CXL-2.0-Type-3 endpoints
2021-02-16 20:36:38 -08:00
Makefile
Simple Firmware Interface (SFI) support removal for v5.12-rc1
2021-02-24 10:35:29 -08:00