Re: [PATCH] [RFC PATCH] ALSA: usb-audio: endpoint: Prevent NULL pointer deference in snd_usb_endpoint_close

[Takashi Iwai <tiwai@xxxxxxx>]

On Fri, 26 Apr 2024 14:25:11 +0200,
Rajashekar kuruva wrote:
> 
> When multiple plug-in and plug-out events occur,
> there is a risk of encountering a NULL pointer dereference
> leading to a kernel panic during a headset use-case.
> this issue arises in the snd_usb_endpoint_close function

Such a scenario can't happen: ep->iface_ref is changed only in
chip->mutex lock, hence it can't be NULL there.


thanks,

Takashi