Bug 219953

Summary: Missing NULL check in avs_component_probe
Product: Drivers Reporter: henry (bsdhenrymartin)
Component: Sound(ALSA)Assignee: Jaroslav Kysela (perex)
Status: NEW ---    
Severity: normal    
Priority: P3    
Hardware: All   
OS: Linux   
Kernel Version: Subsystem:
Regression: No Bisected commit-id:

Description henry 2025-03-28 11:40:02 UTC 
sound: soc: intel: avs: pcm.c
Add NULL check in the avs_component_probe

When devm_kasprintf() fails, it returns a NULL pointer. However, this return value is not properly checked in the function avs_component_probe. 

A NULL check should be added after the devm_kasprintf call to handle potential NULL pointer dereference error.

CODE:
		if (((vendor_id >> 16) & 0xFFFF) == 0x8086)
			mach->tplg_filename = devm_kasprintf(adev->dev, GFP_KERNEL,
							     "hda-8086-generic-tplg.bin");
		else
			mach->tplg_filename = devm_kasprintf(adev->dev, GFP_KERNEL,
							     "hda-generic-tplg.bin");

		filename = kasprintf(GFP_KERNEL, "%s/%s", component->driver->topology_name_prefix,
				     mach->tplg_filename);