USB disk primary partition unusable

I have a 60 G USB disk attached to my Tiny6410. The disk is partitioned
on my Linux PC like so:
fdisk -l /dev/sdb

Disk /dev/sdb: 60.0 GB, 60011642880 bytes
255 heads, 63 sectors/track, 7296 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000d7a96

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1        1306    10490413+  83  Linux
/dev/sdb2            1307        7296    48113664    5  Extended
/dev/sdb5            1308        1437     1044225   82  Linux swap /
Solaris
/dev/sdb6            1438        5991    36579973+  83  Linux
/dev/sdb7            5992        7296    10480640   83  Linux

When it is connect to the 6420:
s3c2410-ohci s3c2410-ohci: urb cd691680 path 1.1 ep1in 93120000 cc 9 -->
status -121
sd 1:0:0:0: [sda] No Caching mode page present
sd 1:0:0:0: [sda] Assuming drive cache: write through
 sda: sda1 sda2 < sda5 sda6 sda7 >

The first partition shows up as /dev/sda2 which is a primary type.
Then try mounting it:
# mount /dev/sda2 /root-fs
mount: mounting /dev/sda2 on /root-fs failed: Invalid argument
FAILS

Try partition /dev/sda6 ( logical part ):
# mount /dev/sda6 /root-fs
# df
Filesystem           1K-blocks      Used Available Use% Mounted on
ubi0:FriendlyARM-root
                       1894272    143384   1750888   8% /
tmpfs                   108284         0    108284   0% /dev/shm
/dev/sdcard            7635832   3342748   3905196  46% /www
/dev/sda6             36004100    275064  33900040   1% /root-fs
WORKS!

mke2fs also fails:
# mke2fs /dev/sda2
mke2fs: image is too small

but works on the logical partitions:
# mke2fs /dev/sda7
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
655360 inodes, 2620160 blocks
131008 blocks (5%) reserved for the super user
First data block=0
Maximum filesystem blocks=4194304
80 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632


So where do I submit this bug??

> The first partition shows up as /dev/sda2 which is a primary type.

No, the fist partition on your SD card is "/dev/sda1".

> # mount /dev/sda2 /root-fs
> mount: mounting /dev/sda2 on /root-fs failed: Invalid argument

"/dev/sda2" contains the other partitions /dev/sda[5..7] (google for
"extended partition").

> mke2fs also fails:
> # mke2fs /dev/sda2
> mke2fs: image is too small

Sure. See above.

> So where do I submit this bug??

I see no bug. Everything is expected.

You're wrong about the SD card, it is not sda, it is /dev/sdcard.

# ls -lrt /dev/sd*
brw-------    1 root     root      179,   1 Oct 10 03:52 /dev/sdcard
brw-rw----    1 root     root        8,   7 Oct 10 03:52 /dev/sda7
brw-rw----    1 root     root        8,   6 Oct 10 03:52 /dev/sda6
brw-rw----    1 root     root        8,   5 Oct 10 03:52 /dev/sda5
brw-rw----    1 root     root        8,   2 Oct 10 03:52 /dev/sda2
brw-rw----    1 root     root        8,   0 Oct 10 03:52 /dev/sda
Here the SD card is at /dev/sdcard and the USB disk is /dev/sda*.
There is no fdisk to prove it to you. In my case, the SD card is where
my web server root is.
Disconnecting the USb disk shows:
hub 1-1:1.0: state 7 ports 4 chg 0000 evt 0002
hub 1-1:1.0: port 1, status 0100, change 0001, 12 Mb/s
usb 1-1.1: USB disconnect, address 3
usb 1-1.1: unregistering device
usb 1-1.1: unregistering interface 1-1.1:1.0
usb 1-1.1: usb_disable_device nuking all URBs
hub 1-1:1.0: debounce: port 1: total 100ms stable 100ms status 0x100

Now:
# ls -lrt /dev/sd*
brw-------    1 root     root      179,   1 Oct 10 03:52 /dev/sdcard

This shows the USB disk is /dev/sda*.

Now where do I report this bug????

Sorry. Replace my "SD card" words by your "60 G USB disk".