OpenCloudOS-Kernel/drivers
Deepak Kumar Singh c23965b7f7 rpmsg: ctrl: Add lock to rpmsg_ctrldev_remove
Call to rpmsg_ctrldev_ioctl() and rpmsg_ctrldev_remove() must be synchronized.
In present code rpmsg_ctrldev_remove() is not protected with lock, therefore
new char device creation can succeed through rpmsg_ctrldev_ioctl() call. At the
same time call to rpmsg_ctrldev_remove() function for ctrl device removal will
free associated rpdev device. As char device creation already succeeded, user
space is free to issue open() call which maps to rpmsg_create_ept() in kernel.
rpmsg_create_ept() function tries to reference rpdev which has already been
freed through rpmsg_ctrldev_remove(). Issue is predominantly seen in aggressive
reboot tests where rpmsg_ctrldev_ioctl() and rpmsg_ctrldev_remove() can race with
each other.

Adding lock in rpmsg_ctrldev_remove() avoids any new char device creation
through rpmsg_ctrldev_ioctl() while remove call is already in progress.

Signed-off-by: Deepak Kumar Singh <quic_deesin@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/1663584840-15762-3-git-send-email-quic_deesin@quicinc.com
2022-12-28 09:54:03 -06:00
..
accel Fix mismerge due to devnode now taking a 'const *' device 2022-12-16 13:04:15 -06:00
accessibility
acpi treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
amba ARM updates for 6.2 2022-12-13 15:22:14 -08:00
android
ata ata changes for 6.2 2022-12-13 10:54:19 -08:00
atm treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
auxdisplay
base Kbuild updates for v6.2 2022-12-19 12:33:32 -06:00
bcma
block treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
bluetooth treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
bus Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
cdrom
char random: do not include <asm/archrandom.h> from random.h 2022-12-20 03:13:45 +01:00
clk A pile of clk driver updates with a small tracepoint patch to the clk core this 2022-12-13 13:46:07 -08:00
clocksource Updates for timers, timekeeping and drivers: 2022-12-12 12:52:02 -08:00
comedi
connector
counter
cpufreq linux-kselftest-next-6.2-rc1 2022-12-12 16:39:38 -08:00
cpuidle powerpc updates for 6.2 2022-12-19 07:13:33 -06:00
crypto powerpc updates for 6.2 2022-12-19 07:13:33 -06:00
cxl cxl/region: Fix memdev reuse check 2022-12-08 13:03:47 -08:00
dax
dca
devfreq
dio
dma dmaengine updates for v6.2 2022-12-19 08:54:17 -06:00
dma-buf Driver Core changes for 6.2-rc1 2022-12-16 03:54:54 -08:00
edac Merge branches 'edac-ghes' and 'edac-misc' into edac-updates-for-v6.2 2022-12-12 15:40:03 +01:00
eisa
extcon Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
firewire
firmware remoteproc updates for v6.2 2022-12-21 09:37:14 -08:00
fpga Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
fsi
gnss
gpio pwm: Changes for v6.2-rc1 2022-12-21 09:41:28 -08:00
gpu treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
greybus
hid treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
hsi
hte
hv Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
hwmon hwmon updates for v6.2 merge window 2022-12-13 13:09:38 -08:00
hwspinlock
hwtracing
i2c Core got a new helper 'i2c_client_get_device_id', designware got some 2022-12-15 14:47:10 -08:00
i3c i3c: export SETDASA method 2022-12-11 21:25:58 +01:00
idle
iio Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
infiniband v6.2 merge window 2nd pull request 2022-12-17 08:23:42 -06:00
input treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
interconnect
iommu IOMMU Updates for Linux v6.2 2022-12-19 08:34:39 -06:00
ipack
irqchip RISC-V Patches for the 6.2 Merge Window, Part 1 2022-12-14 15:23:49 -08:00
isdn treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
leds treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
macintosh
mailbox - qcom: enable sc8280xp, sm8550 and sm4250 support 2022-12-21 09:31:18 -08:00
mcb
md - Fix use-after-free races due to missing resource cleanup during DM 2022-12-13 10:58:09 -08:00
media treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
memory ARM updates for 6.2 2022-12-13 15:22:14 -08:00
memstick memstick/mspro_block: Convert to use sysfs_emit()/sysfs_emit_at() APIs 2022-12-09 10:29:58 +01:00
message
mfd - New Drivers 2022-12-21 09:19:24 -08:00
misc kernel hardening fixes for v6.2-rc1 2022-12-23 12:00:24 -08:00
mmc MMC core: 2022-12-13 13:41:26 -08:00
most
mtd MTD core changes: 2022-12-13 12:32:07 -08:00
mux
net treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
nfc treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
ntb
nubus
nvdimm
nvme SCSI misc on 20221222 2022-12-22 11:22:31 -08:00
nvmem Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
of Devicetree updates for v6.2, part 2: 2022-12-20 08:48:24 -06:00
opp
parisc parisc: led: Fix potential null-ptr-deref in start_task() 2022-12-17 23:19:38 +01:00
parport
pci phy-for-6.2 2022-12-19 08:40:58 -06:00
pcmcia treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
peci
perf RISC-V Patches for the 6.2 Merge Window, Part 1 2022-12-14 15:23:49 -08:00
phy phy-for-6.2 2022-12-19 08:40:58 -06:00
pinctrl Pin control changes for the v6.2 kernel cycle: 2022-12-13 13:03:06 -08:00
platform USB/Thunderbolt driver changes for 6.2-rc1 2022-12-16 03:22:53 -08:00
pnp
power power supply and reset changes for the v6.2 series 2022-12-17 08:39:31 -06:00
powercap
pps
ps3
ptp Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
pwm pwm: Changes for v6.2-rc1 2022-12-21 09:41:28 -08:00
rapidio rapidio: devices: fix missing put_device in mport_cdev_open 2022-12-11 19:30:20 -08:00
ras
regulator regulator: Fixes for v6.2 2022-12-23 14:38:00 -08:00
remoteproc remoteproc: core: Do pm_relax when in RPROC_OFFLINE state 2022-12-07 11:20:55 -07:00
reset
rpmsg rpmsg: ctrl: Add lock to rpmsg_ctrldev_remove 2022-12-28 09:54:03 -06:00
rtc - New Drivers 2022-12-21 09:19:24 -08:00
s390 Driver Core changes for 6.2-rc1 2022-12-16 03:54:54 -08:00
sbus
scsi treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
sh
siox
slimbus
soc ARM: SoC fixes for 6.2 2022-12-19 16:07:59 -06:00
soundwire soundwire updates for 6.2 2022-12-19 08:47:33 -06:00
spi spi: Fix for v6.2 2022-12-23 14:44:08 -08:00
spmi
ssb
staging treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
target SCSI misc on 20221213 2022-12-14 08:58:51 -08:00
tc
tee SoC driver updates for 6.2 2022-12-12 10:17:08 -08:00
thermal More thermal control updates for 6.2-rc1 2022-12-15 10:16:04 -08:00
thunderbolt
tty treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
ufs SCSI misc on 20221213 2022-12-14 08:58:51 -08:00
uio
usb treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
vdpa
vfio Driver Core changes for 6.2-rc1 2022-12-16 03:54:54 -08:00
vhost
video - Fix-ups 2022-12-21 09:24:39 -08:00
virt Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
virtio
vlynq
w1
watchdog linux-watchdog 6.2-rc1 tag 2022-12-17 08:34:01 -06:00
xen drm for 6.2: 2022-12-13 11:59:58 -08:00
zorro
Kconfig
Makefile