Re: [PATCH] usb-storage: option_ms: bound probe-time bulk transfers

[Oliver Neukum]

On 13.10.26 18:18, Greg KH wrote:
> On Tue, Oct 13, 2026 at 10:20:33PM +0900, Lee Yongjun wrote:
> > The Option device initialization path issues bulk transfers
> > without a timeout. If a device does not complete a transfer,
> > the USB hub worker can remain blocked while holding the device
> > mutex, causing usb_device_read() to hang.
>
> So a broken device?
On a generic note, the SCSI layer is ready to deal with broken devices.
In consequence, so have SCSI LLDs. We cannot hold a lock that will stall
the SCSI layer in error handling indefinitely.

	Regards
		Oliver