Re: [PATCH v1 1/1] usbnet:fix NPE during rx_complete

[Greg KH]

On Tue, Apr 01, 2025 at 06:18:01PM +0800, Ying Lu wrote:
> From: luying1 <luying1@xxxxxxxxxx>
> 
> Missing usbnet_going_away Check in Critical Path.
> The usb_submit_urb function lacks a usbnet_going_away
> validation, whereas __usbnet_queue_skb includes this check.
> 
> This inconsistency creates a race condition where:
> A URB request may succeed, but the corresponding SKB data
> fails to be queued.
> 
> Subsequent processes:
> (e.g., rx_complete → defer_bh → __skb_unlink(skb, list))
> attempt to access skb->next, triggering a NULL pointer
> dereference (Kernel Panic).
> 
> Signed-off-by: luying1 <luying1@xxxxxxxxxx>

Please use your name, not an email alias.

Also, what commit id does this fix?  Should it be applied to stable
kernels?

thanks,

greg k-h