A possible mkdir bug

[Prafulla Giri]

Esteemed Developers,

Thank you for your hard work and dedication with which you have brought
liberation into computing. We really appreciate it.

This morning, I ran into a strange issue with the mkdir command.
$ mkdir -p
/home/alpha/0403-0201/Prafulla/10Jan2018/Image_Sequence_Fri_Jan_11_09:13:38
The command works just fine, as expected.

$ mkdir -p
/media/alpha/0403-0201/Prafulla/10Jan2018/Image_Sequence_Fri_Jan_11_09:13:38
This one throws the following error: 'mkdir: cannot create directory
‘/media/alpha/0403-0201/Prafulla/10Jan2018/Image_Sequence_Fri_Jan_11_09:13:38’:
Invalid argument'

Which is rather strange. I don't really see any reason why it should work
under /home but not under /media.

Quoting does not seem to make much of a difference either.

Is there something going on that I do not understand or is it a bug?

Thank you for your time