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dfb703ad2a
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Tyler Hicks dfb703ad2a tpm_ftpm_tee: Free and unregister TEE shared memory during kexec 
dma-buf backed shared memory cannot be reliably freed and unregistered
during a kexec operation even when tee_shm_free() is called on the shm
from a .shutdown hook. The problem occurs because dma_buf_put() calls
fput() which then uses task_work_add(), with the TWA_RESUME parameter,
to queue tee_shm_release() to be called before the current task returns
to user mode. However, the current task never returns to user mode
before the kexec completes so the memory is never freed nor
unregistered.

Use tee_shm_alloc_kernel_buf() to avoid dma-buf backed shared memory
allocation so that tee_shm_free() can directly call tee_shm_release().
This will ensure that the shm can be freed and unregistered during a
kexec operation.

Fixes: 09e574831b ("tpm/tpm_ftpm_tee: A driver for firmware TPM running inside TEE")
Fixes: 1760eb689e ("tpm/tpm_ftpm_tee: add shutdown call back")
Cc: stable@vger.kernel.org
Signed-off-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2021-07-21 07:55:50 +02:00
..
accessibility TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
acpi More ACPI updates for 5.14-rc1 2021-07-07 13:30:01 -07:00
amba
android
ata ARM: SoC changes for 5.14 2021-07-10 09:22:44 -07:00
atm Networking changes for 5.14. 2021-06-30 15:51:09 -07:00
auxdisplay
base More power management updates for 5.14-rc1 2021-07-07 13:22:59 -07:00
bcma
block block-5.14-2021-07-16 2021-07-16 12:31:44 -07:00
bluetooth TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
bus ARM: Drivers for 5.14 2021-07-10 09:46:20 -07:00
cdrom block: remove REQ_OP_SCSI_{IN,OUT} 2021-06-30 15:34:19 -06:00
char tpm_ftpm_tee: Free and unregister TEE shared memory during kexec 2021-07-21 07:55:50 +02:00
clk dt-bindings: clock: r9a07g044-cpg: Update clock/reset definitions 2021-07-12 10:52:03 +02:00
clocksource This round has a diffstat dominated by Qualcomm clk drivers. Honestly though 2021-07-01 13:26:16 -07:00
comedi Staging / IIO driver patches for 5.14-rc1 2021-07-05 14:01:53 -07:00
connector
counter
cpufreq cpufreq: Fix fall-through warning for Clang 2021-07-13 11:53:07 -05:00
cpuidle - Add support for the Qcom MSM8226 (Bartosz Dudziak) 2021-06-30 14:56:51 +02:00
crypto ARM: SoC changes for 5.14 2021-07-10 09:22:44 -07:00
cxl
dax fs: remove noop_set_page_dirty() 2021-06-29 10:53:48 -07:00
dca
devfreq PM / devfreq: passive: Fix get_target_freq when not using required-opp 2021-06-24 10:37:35 +09:00
dio
dma dmaengine: mpc512x: Fix fall-through warning for Clang 2021-07-14 11:05:55 -05:00
dma-buf Short summary of fixes pull: 2021-07-13 15:15:17 +02:00
edac EDAC/igen6: fix core dependency AGAIN 2021-07-15 11:59:59 -07:00
eisa
extcon Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
firewire Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
firmware ARM SCMI fixes for v5.14 2021-07-16 23:01:25 +02:00
fpga fpga: machxo2-spi: Address warning about unused variable 2021-06-24 15:45:11 +02:00
fsi
gnss
gpio - Core Frameworks 2021-07-05 12:10:34 -07:00
gpu drm fixes for 5.14-rc2 2021-07-16 11:14:54 -07:00
greybus
hid Merge branch 'for-5.14/multitouch' into for-linus 2021-06-30 09:15:15 +02:00
hsi
hv Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
hwmon Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
hwspinlock
hwtracing Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
i2c Merge branch 'i2c/for-mergewindow' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2021-07-04 11:47:18 -07:00
i3c I3C for 5.14 2021-07-10 11:53:06 -07:00
idle
iio Staging / IIO driver patches for 5.14-rc1 2021-07-05 14:01:53 -07:00
infiniband Tracing updates for 5.14: 2021-07-03 11:13:22 -07:00
input This pull request contains the following changes for UML: 2021-07-09 10:19:13 -07:00
interconnect
iommu fallthrough fixes for Clang for 5.14-rc2 2021-07-15 13:57:31 -07:00
ipack TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
irqchip irqchip fixes for 5.14, take #1 2021-07-09 15:35:13 +02:00
isdn TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
leds This contains quite a lot of fixes, with more fixes in my inbox that 2021-07-03 11:57:42 -07:00
lightnvm
macintosh
mailbox mbox: add polarfire soc system controller mailbox 2021-06-26 12:06:48 -05:00
mcb mcb: Use DEFINE_RES_MEM() helper macro and fix the end address 2021-06-24 15:56:25 +02:00
md - Various DM persistent-data library improvements and fixes that 2021-06-30 18:19:39 -07:00
media Driver core changes for 5.14-rc1 2021-07-05 13:51:41 -07:00
memory
memstick for-5.14/block-2021-06-29 2021-06-30 12:12:56 -07:00
message
mfd Driver core changes for 5.14-rc1 2021-07-05 13:51:41 -07:00
misc TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
mmc mmc: jz4740: Fix fall-through warning for Clang 2021-07-13 13:59:22 -05:00
most
mtd mtd: cfi_util: Fix unreachable code issue 2021-07-12 11:15:28 -05:00
mux
net fallthrough fixes for Clang for 5.14-rc2 2021-07-15 13:57:31 -07:00
nfc
ntb
nubus
nvdimm cxl for 5.14 2021-07-04 11:55:13 -07:00
nvme block-5.14-2021-07-16 2021-07-16 12:31:44 -07:00
nvmem Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
of Devicetree updates for v5.14: 2021-07-03 10:54:08 -07:00
opp
parisc kernel.h: split out panic and oops helpers 2021-07-01 11:06:04 -07:00
parport
pci PCI: Fix fall-through warning for Clang 2021-07-13 13:59:12 -05:00
pcmcia
perf
phy USB / Thunderbolt patches for 5.14-rc1 2021-07-05 14:16:22 -07:00
pinctrl This is the bulk of pin control changes for the v5.14 kernel: 2021-07-01 16:57:14 -07:00
platform Driver core changes for 5.14-rc1 2021-07-05 13:51:41 -07:00
pnp Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
power power: supply: Fix fall-through warnings for Clang 2021-07-13 14:50:47 -05:00
powercap
pps
ps3
ptp ptp: Relocate lookup cookie to correct block. 2021-07-08 12:33:10 -07:00
pwm pwm: ep93xx: Ensure configuring period and duty_cycle isn't wrongly skipped 2021-07-08 16:09:30 +02:00
rapidio
ras
regulator - Core Frameworks 2021-07-05 12:10:34 -07:00
remoteproc remoteproc updates for v5.14 2021-07-07 10:50:03 -07:00
reset ARM: Drivers for 5.14 2021-07-10 09:46:20 -07:00
rpmsg
rtc RTC for 5.14 2021-07-10 16:19:10 -07:00
s390 SCSI fixes on 20210717 2021-07-17 13:09:23 -07:00
sbus
scsi SCSI fixes on 20210717 2021-07-17 13:09:23 -07:00
sh
siox siox: Simplify error handling via dev_err_probe() 2021-06-24 15:46:34 +02:00
slimbus
soc ARM: Drivers for 5.14 2021-07-10 09:46:20 -07:00
soundwire Char / Misc driver updates for 5.14-rc1 2021-07-05 13:42:16 -07:00
spi Merge remote-tracking branch 'spi/for-5.14' into spi-next 2021-06-25 14:08:26 +01:00
spmi spmi: hisi-spmi-controller: move driver from staging 2021-06-25 10:02:05 +02:00
ssb
staging TTY / Serial patches for 5.14-rc1 2021-07-05 14:08:24 -07:00
target block-5.14-2021-07-08 2021-07-09 12:05:33 -07:00
tc
tee tee: Correct inappropriate usage of TEE_SHM_DMA_BUF flag 2021-07-21 07:55:50 +02:00
thermal - Add rk3568 sensor support (Finley Xiao) 2021-07-10 11:43:25 -07:00
thunderbolt USB / Thunderbolt patches for 5.14-rc1 2021-07-05 14:16:22 -07:00
tty This pull request contains the following changes for UML: 2021-07-09 10:19:13 -07:00
uio
usb usb: gadget: fsl_qe_udc: Fix fall-through warning for Clang 2021-07-14 11:02:37 -05:00
vdpa vp_vdpa: allow set vq state to initial state after reset 2021-07-08 07:49:02 -04:00
vfio VFIO update for v5.14-rc1 2021-07-03 11:49:33 -07:00
vhost vdpa: support packed virtqueue for set/get_vq_state() 2021-07-08 07:49:01 -04:00
video drm fixes for 5.14-rc2 2021-07-16 11:14:54 -07:00
virt nitro_enclaves: Set Bus Master for the NE PCI device 2021-06-24 15:48:27 +02:00
virtio virtio,vhost,vdpa: features, fixes 2021-07-09 11:06:29 -07:00
visorbus
vlynq
vme
w1
watchdog linux-watchdog 5.14-rc1 tag 2021-07-07 12:57:46 -07:00
xen xen: branch for v5.14-rc1 2021-07-07 11:07:13 -07:00
zorro
Kconfig
Makefile hyperv-next for 5.14 2021-06-29 11:21:35 -07:00