Re: [PATCH] usb: core: prevent double URB enqueue causing list corruption

[Greg KH]

On Fri, Oct 31, 2025 at 07:17:39PM +0530, vsshingne wrote:
> Prevents the same URB from being enqueued twice on the same endpoint,
> which could lead to list corruption detected by list_debug.c.
> 
> This was observed in syzbot reports where URBs were re-submitted
> before completion, triggering 'list_add double add' errors.
> 
> Adding a check to return -EEXIST if the URB is already on a queue
> prevents this corruption.

This text makes no sense at all, it does not describe what this patch
does in any way.  Please do not use AI to generate patches.

greg k-h