linux-uconsole/drivers/misc
Srinivas Kandagatla 86e3ad8b75 misc: fastrpc: Add missing lock before accessing find_vma()
commit f9a470db27 upstream.

fastrpc driver is using find_vma() without any protection, as a
result we see below warning due to recent patch 5b78ed24e8
("mm/pagemap: add mmap_assert_locked() annotations to find_vma*()")
which added mmap_assert_locked() in find_vma() function.

This bug went un-noticed in previous versions. Fix this issue by adding
required protection while calling find_vma().

CPU: 0 PID: 209746 Comm: benchmark_model Not tainted 5.15.0-rc2-00445-ge14fe2bf817a-dirty #969
Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : find_vma+0x64/0xd0
lr : find_vma+0x60/0xd0
sp : ffff8000158ebc40
...

Call trace:
 find_vma+0x64/0xd0
 fastrpc_internal_invoke+0x570/0xda8
 fastrpc_device_ioctl+0x3e0/0x928
 __arm64_sys_ioctl+0xac/0xf0
 invoke_syscall+0x44/0x100
 el0_svc_common.constprop.3+0x70/0xf8
 do_el0_svc+0x24/0x88
 el0_svc+0x3c/0x138
 el0t_64_sync_handler+0x90/0xb8
 el0t_64_sync+0x180/0x184

Fixes: 80f3afd72b ("misc: fastrpc: consider address offset before sending to DSP")
Cc: stable@vger.kernel.org
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210922154326.8927-1-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-20 11:45:01 +02:00
..
altera-stapl
c2port
cardreader misc: alcor_pci: fix inverted branch condition 2021-07-20 16:05:50 +02:00
cb710 cb710: avoid NULL pointer subtraction 2021-10-20 11:45:00 +02:00
cxl
echo
eeprom misc: eeprom: at24: Always append device id even if label property is set. 2021-07-28 14:35:46 +02:00
genwqe
habanalabs habanalabs/gaudi: fix LBW RR configuration 2021-10-09 14:40:56 +02:00
ibmasm misc/libmasm/module: Fix two use after free in ibmasm_init_one 2021-07-20 16:05:38 +02:00
lis3lv02d platform/x86: hp_accel: Avoid invoking _INI to speed up resume 2021-06-03 09:00:39 +02:00
lkdtm lkdtm: replace SCSI_DISPATCH_CMD with SCSI_QUEUE_RQ 2021-09-15 09:50:42 +02:00
mei mei: me: add Ice Lake-N device id. 2021-10-20 11:44:59 +02:00
ocxl
sgi-gru
sgi-xp
ti-st
uacce
vmw_vmci VMCI: fix NULL pointer dereference when unmapping queue pair 2021-09-18 13:40:09 +02:00
ad525x_dpot-i2c.c
ad525x_dpot-spi.c
ad525x_dpot.c
ad525x_dpot.h
apds990x.c
apds9802als.c
atmel-ssc.c
atmel_tclib.c
bh1770glc.c
cs5535-mfgpt.c
ds1682.c
dummy-irq.c
enclosure.c
fastrpc.c misc: fastrpc: Add missing lock before accessing find_vma() 2021-10-20 11:45:01 +02:00
hisi_hikey_usb.c
hmc6352.c
hpilo.c
hpilo.h
ibmvmc.c
ibmvmc.h
ics932s401.c ics932s401: fix broken handling of errors when word reading fails 2021-05-26 12:06:56 +02:00
isl29003.c
isl29020.c
Kconfig
kgdbts.c kgdb: fix gcc-11 warnings harder 2021-06-03 09:00:31 +02:00
lattice-ecp3-config.c
Makefile
pch_phub.c
pci_endpoint_test.c
phantom.c
pti.c
pvpanic.c misc/pvpanic: Export module FDT device table 2021-03-17 17:06:31 +01:00
qcom-coincell.c
sram-exec.c
sram.c treewide: Change list_sort to use const pointers 2021-09-30 10:11:04 +02:00
sram.h
tifm_7xx1.c
tifm_core.c
tsl2550.c
vmw_balloon.c
xilinx_sdfec.c