Comment 4 for bug 1207934

I found the solution to this problem. There's a patch out from
http://www.spinics.net/lists/stable/msg16448.html :

diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 3b1ea34..eaa808e 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -1031,6 +1031,9 @@ int scsi_get_vpd_page(struct scsi_device *sdev, u8 page, unsigned char *buf,
 {
  int i, result;

+ if (sdev->skip_vpd_pages)
+ goto fail;
+
  /* Ask for all the pages supported by this device */
  result = scsi_vpd_inquiry(sdev, buf, 0, buf_len);
  if (result)

Hopefully it gets out to Ubuntu's kernels soon.