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