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Jason Gerecke 179e8e47c0 HID: wacom: Correct NULL dereference on AES pen proximity 
The recent commit to fix a memory leak introduced an inadvertant NULL
pointer dereference. The `wacom_wac->pen_fifo` variable was never
intialized, resuling in a crash whenever functions tried to use it.
Since the FIFO is only used by AES pens (to buffer events from pen
proximity until the hardware reports the pen serial number) this would
have been easily overlooked without testing an AES device.

This patch converts `wacom_wac->pen_fifo` over to a pointer (since the
call to `devres_alloc` allocates memory for us) and ensures that we assign
it to point to the allocated and initalized `pen_fifo` before the function
returns.

Link: https://github.com/linuxwacom/input-wacom/issues/230
Fixes: 37309f47e2 ("HID: wacom: Fix memory leakage caused by kfifo_alloc")
CC: stable@vger.kernel.org # v4.19+
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Tested-by: Ping Cheng <ping.cheng@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 		2021-01-26 11:53:53 +01:00
..
accessibility speakup: fix uninitialized flush_lock 2020-12-09 15:38:13 +01:00
acpi ACPI updates for 5.11-rc1 2020-12-15 16:39:06 -08:00
amba
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android Merge branch 'exec-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-12-15 19:29:43 -08:00
ata
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atm
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auxdisplay
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base Power management updates for 5.11-rc1 2020-12-15 16:30:31 -08:00
bcma
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block for-5.11/drivers-2020-12-14 2020-12-16 13:09:32 -08:00
bluetooth Bluetooth: btusb: Add workaround for remote-wakeup issues with Barrot 8041a02 fake CSR controllers 2020-12-07 17:01:54 +02:00
bus MIPS updates for v5.11: 2020-12-16 12:07:54 -08:00
cdrom cdrom: Reset sector_size back it is not 2048. 2020-12-12 11:12:25 -07:00
char Some very minor changes 2020-12-16 14:54:39 -08:00
clk Power management updates for 5.11-rc1 2020-12-15 16:30:31 -08:00
clocksource asm-generic: cross-architecture timer cleanup 2020-12-16 00:07:17 -08:00
connector
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counter counter: microchip-tcb-capture: Fix CMR value check 2020-12-03 19:40:31 +00:00
cpufreq Merge branch 'pm-cpufreq' 2020-12-15 15:24:52 +01:00
cpuidle Power management updates for 5.11-rc1 2020-12-15 16:30:31 -08:00
crypto Networking updates for 5.11 2020-12-15 13:22:29 -08:00
dax vm_ops: rename .split() callback to .may_split() 2020-12-15 12:13:41 -08:00
dca
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devfreq Merge branches 'pm-devfreq' and 'pm-tools' 2020-12-15 15:27:16 +01:00
dio
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dma
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dma-buf Merge branch 'akpm' (patches from Andrew) 2020-12-15 12:53:37 -08:00
edac Merge branch 'akpm' (patches from Andrew) 2020-12-15 12:53:37 -08:00
eisa
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extcon extcon: max77693: Fix modalias string 2020-12-11 17:18:10 +09:00
firewire
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firmware Power management updates for 5.11-rc1 2020-12-15 16:30:31 -08:00
fpga Merge 5.10-rc7 into char-misc-next 2020-12-07 10:08:14 +01:00
fsi hwmon patches for v5.11 2020-12-15 16:06:14 -08:00
gnss
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gpio - New Drivers 2020-12-16 14:48:32 -08:00
gpu IOMMU updates for 5.11 2020-12-16 13:58:47 -08:00
greybus
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hid HID: wacom: Correct NULL dereference on AES pen proximity 2021-01-26 11:53:53 +01:00
hsi
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hv hyperv-next for 5.11 2020-12-16 11:49:46 -08:00
hwmon hwmon: (sbtsi) Add basic support for SB-TSI sensors 2020-12-12 08:32:35 -08:00
hwspinlock hwspinlock: sirf: Remove the redundant 'of_match_ptr' 2020-12-10 13:34:40 -06:00
hwtracing Char / Misc driver updates for 5.11-rc1 2020-12-15 14:10:09 -08:00
i2c Power management updates for 5.11-rc1 2020-12-15 16:30:31 -08:00
i3c
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ide for-5.11/block-2020-12-14 2020-12-16 12:57:51 -08:00
idle intel_idle: Build fix 2020-12-03 10:00:23 +01:00
iio Staging / IIO driver patches for 5.11-rc1 2020-12-15 14:18:40 -08:00
infiniband RDMA 5.11 pull request 2020-12-16 13:42:26 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2020-12-15 16:18:23 -08:00
interconnect interconnect changes for 5.11 2020-12-04 14:11:20 +01:00
iommu IOMMU updates for 5.11 2020-12-16 13:58:47 -08:00
ipack
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irqchip irqchip/qcom-pdc: Fix phantom irq when changing between rising/falling 2020-12-12 10:46:02 +00:00
isdn
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leds
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lightnvm drivers/lightnvm: fix a null-ptr-deref bug in pblk-core.c 2020-12-08 10:02:45 -07:00
macintosh macintosh/adb-iop: Send correct poll command 2020-12-07 10:48:16 +01:00
mailbox
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mcb
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md for-5.11/drivers-2020-12-14 2020-12-16 13:09:32 -08:00
media Power management updates for 5.11-rc1 2020-12-15 16:30:31 -08:00
memory
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memstick memstick: r592: Fix error return in r592_probe() 2020-12-04 12:27:10 +01:00
message SCSI misc on 20201216 2020-12-16 13:34:31 -08:00
mfd mfd: kempld-core: Add support for additional devices 2020-12-02 12:53:27 +00:00
misc drivers/misc/lkdtm/lkdtm.h: correct wrong filenames in comment 2020-12-15 22:46:16 -08:00
mmc MMC core: 2020-12-15 15:57:25 -08:00
most
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mtd MTD core: 2020-12-16 14:58:35 -08:00
mux
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net xen: branch for v5.11-rc1 2020-12-16 11:53:09 -08:00
nfc Networking updates for 5.11 2020-12-15 13:22:29 -08:00
ntb
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nubus
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nvdimm
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nvme RDMA 5.11 pull request 2020-12-16 13:42:26 -08:00
nvmem
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of Driver core updates for 5.11-rc1 2020-12-15 14:02:26 -08:00
opp Merge branch 'pm-cpufreq' 2020-12-15 15:24:52 +01:00
oprofile
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parisc
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parport
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pci RDMA 5.11 pull request 2020-12-16 13:42:26 -08:00
pcmcia
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perf perf/imx_ddr: Add system PMU identifier for userspace 2020-12-09 14:14:02 +00:00
phy Char / Misc driver updates for 5.11-rc1 2020-12-15 14:10:09 -08:00
pinctrl This is the bulk of pin control changes for the v5.11 kernel: 2020-12-16 15:02:49 -08:00
platform Merge tag 'thermal-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux 2020-12-15 16:21:37 -08:00
pnp
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power
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powercap Merge branches 'pm-sleep', 'pm-acpi', 'pm-domains' and 'powercap' 2020-12-15 15:26:14 +01:00
pps
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ps3
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ptp ptp: clockmatrix: deprecate firmware older than 4.8.7 2020-12-09 15:00:55 -08:00
pwm pwm: sl28cpld: fix getting driver data in pwm callbacks 2020-12-03 09:57:37 -08:00
rapidio rapidio: remove unused rio_get_asm() and rio_get_device() 2020-12-15 22:46:18 -08:00
ras
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regulator Merge remote-tracking branch 'regulator/for-5.11' into regulator-next 2020-12-11 17:48:32 +00:00
remoteproc remoteproc/mediatek: read IPI buffer offset from FW 2020-12-10 13:32:10 -06:00
reset
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rpmsg
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rtc ntp: Make the RTC sync offset less obscure 2020-12-11 10:40:53 +01:00
s390 SCSI misc on 20201216 2020-12-16 13:34:31 -08:00
sbus
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scsi SCSI misc on 20201216 2020-12-16 13:34:31 -08:00
sfi
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sh
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siox siox: Make remove callback return void 2020-12-10 16:17:15 +01:00
slimbus slimbus: qcom: fix potential NULL dereference in qcom_slim_prg_slew() 2020-12-10 16:23:56 +01:00
soc Power management updates for 5.11-rc1 2020-12-15 16:30:31 -08:00
soundwire soundwire: intel: fix another unused-function warning 2020-12-05 13:11:54 +05:30
spi Merge remote-tracking branch 'spi/for-5.11' into spi-next 2020-12-11 17:49:01 +00:00
spmi spmi: Add driver shutdown support 2020-12-10 10:45:36 +01:00
ssb
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staging Staging / IIO driver patches for 5.11-rc1 2020-12-15 14:18:40 -08:00
target SCSI misc on 20201216 2020-12-16 13:34:31 -08:00
tc
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tee Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2020-12-14 12:18:19 -08:00
thermal Merge tag 'thermal-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux 2020-12-15 16:21:37 -08:00
thunderbolt thunderbolt: Changes for v5.11 merge window 2020-12-08 13:41:45 +01:00
tty printk changes for 5.11 2020-12-16 10:45:11 -08:00
uio uio: uio_hv_generic: use devm_kzalloc() for private data alloc 2020-12-09 19:59:00 +01:00
usb for-5.11/block-2020-12-14 2020-12-16 12:57:51 -08:00
vdpa Merge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux 2020-12-07 18:36:21 -08:00
vfio vfio: platform: Switch to use platform_get_mem_or_io() 2020-12-10 16:31:46 +01:00
vhost vhost: vringh: use krealloc_array() 2020-12-15 12:13:37 -08:00
video - Bug Fixes 2020-12-16 14:52:37 -08:00
virt
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virtio mm, page_poison: remove CONFIG_PAGE_POISONING_NO_SANITY 2020-12-15 12:13:46 -08:00
visorbus
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vlynq
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vme vme: switch from 'pci_' to 'dma_' API 2020-12-09 19:44:34 +01:00
w1
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watchdog
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xen xen: branch for v5.11-rc1 2020-12-16 11:53:09 -08:00
zorro
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Kconfig
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Makefile asm-generic: cross-architecture timer cleanup 2020-12-16 00:07:17 -08:00