[BUG] usb-storage: 14cd:1212 returns incorrect data after large READ(10)

[Xuntao Chi]

Hello,

I would like to report a deterministic silent read corruption issue with
14cd:1212 USB microSD readers and propose adding a MAX_SECTORS_64 quirk.

A READ(10) larger than 64 KiB can cause the following READ(10) to return
data from the wrong LBA. The trigger I have found is that the second
read starts 64 KiB beyond the end of the first read. Instead of honoring
that gap, the reader returns data starting at the end of the first read,
that is exactly 64 KiB before the requested address. Both commands 
complete successfully, but the returned payload contains erroneous data.

The same problem is observed on 3 physically separate readers purchased
from 2 different OEMs, all identifying as 14cd:1212 and with the same
serial.

Device and environments
-----------------------

  VID:PID:         14cd:1212
  idVendor:        Super Top
  idProduct:       microSD card reader (SY-T18)
  bcdDevice:       1.00
  iManufacturer:   Generic
  iProduct:        Mass Storage Device
  iSerial:         121220160204
  speed:           USB 2.0 high speed
  driver:          usb-storage
  logical blocks:  512 bytes

The error is reproduced on an arm64 machine running 6.18.54 kernel, the 
same machine running a 6.12.112 kernel, and an amd64 machine running 
6.8.0 kernel, and is confirmed directly using libusb.

This has been observed to cause data silent data corrupting when 
mounting an ext4 partition from the device, and setting 
max_sectors_kb=64 as a workaround fixes it completely.

Would adding a US_FL_MAX_SECTORS_64 quirk be appropriate? I retest 
against the latest mainline if needed.

Regards,
Xuntao Chi