8.0_RC1 sd0: error 22 on connecting usb stick

[Mayuresh <mayuresh%acm.org@localhost>]

# uname -a
NetBSD asusnetbsd 8.0_RC1 NetBSD 8.0_RC1 (GENERIC.201804191727Z) amd64

On inserting the stick dmesg shows:

umass0 at uhub2 port 2 configuration 1 interface 0
umass0: SanDisk (0x781) Cruzer Blade (0x5567), rev 2.00/1.27, addr 7
umass0: using SCSI over Bulk-Only
scsibus0 at umass0: 2 targets, 1 lun per target
sd0 at scsibus0 target 0 lun 0: <SanDisk, Cruzer Blade, 1.27> disk removable
sd0: 7401 MB, 15037 cyl, 16 head, 63 sec, 512 bytes/sect x 15158272 sectors
sd0: GPT GUID: 6363a372-dee6-459f-8d39-c2ac36d7f1e9
dk0 at sd0: "I", 1620845 blocks at 0, type: <unknown>
sd0: error 22 adding entry 1 (cef3f5c5-b817-4cc4-92d3-0b8e91b5de49), type ebd0a0a2-b9e5-4433-87c0-68b6b72699c7

# disklabel /dev/sd0
# /dev/sd0:
type: unknown
disk: Cruzer Blade   
label: 
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 16
sectors/cylinder: 1008
cylinders: 15037
total sectors: 15158272
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # microseconds
track-to-track seek: 0  # microseconds
drivedata: 0 

16 partitions:
#        size    offset     fstype [fsize bsize cpg/sgs]
 a:  11193840        63     4.2BSD   2048 16384     0  # (Cyl.      0*- 11105*)
 b:   3964369  11193903       swap                     # (Cyl.  11105*- 15037*)
 c:  15158209        63     unused      0     0        # (Cyl.      0*- 15037*)
 d:  15158272         0     unused      0     0        # (Cyl.      0 - 15037*)

What could be the issue? How to make this stick write mountable?

Mayuresh.