In the Linux kernel, the following vulnerability has been resolved:

ASoC: soc-core: care NULL dirver name on snd_soc_lookup_component_nolocked()

soc-generic-dmaengine-pcm.c uses same dev for both CPU and Platform.
In such case, CPU component driver might not have driver->name, then
snd_soc_lookup_component_nolocked() will be NULL pointer access error.
Care NULL driver name.

	Call trace:
	 strcmp from snd_soc_lookup_component_nolocked+0x64/0xa4
	 snd_soc_lookup_component_nolocked from snd_soc_unregister_component_by_driver+0x2c/0x44
	 snd_soc_unregister_component_by_driver from snd_dmaengine_pcm_unregister+0x28/0x64
	 snd_dmaengine_pcm_unregister from devres_release_all+0x98/0xfc
	 devres_release_all from device_unbind_cleanup+0xc/0x60
	 device_unbind_cleanup from really_probe+0x220/0x2c8
	 really_probe from __driver_probe_device+0x88/0x1a0
	 __driver_probe_device from driver_probe_device+0x30/0x110
	driver_probe_device from __driver_attach+0x90/0x178
	__driver_attach from bus_for_each_dev+0x7c/0xcc
	bus_for_each_dev from bus_add_driver+0xcc/0x1ec
	bus_add_driver from driver_register+0x80/0x11c
	driver_register from do_one_initcall+0x58/0x23c
	do_one_initcall from kernel_init_freeable+0x198/0x1f4
	kernel_init_freeable from kernel_init+0x1c/0x12c
	kernel_init from ret_from_fork+0x14/0x28