CVE-2021-47165

In the Linux kernel, the following vulnerability has been resolved:
drm/meson: fix shutdown crash when component not probed When main component
is not probed, by example when the dw-hdmi module is not loaded yet or in
probe defer, the following crash appears on shutdown: Unable to handle
kernel NULL pointer dereference at virtual address 0000000000000038 … pc
: meson_drv_shutdown+0x24/0x50 lr : platform_drv_shutdown+0x20/0x30 …
Call trace: meson_drv_shutdown+0x24/0x50 platform_drv_shutdown+0x20/0x30
device_shutdown+0x158/0x360 kernel_restart_prepare+0x38/0x48
kernel_restart+0x18/0x68 __do_sys_reboot+0x224/0x250
__arm64_sys_reboot+0x24/0x30 … Simply check if the priv struct has been
allocated before using it.