A new panic on HEAD

[Petr Janda]

Hey everyone,

I accidentally tried to mount a fat32 partition over a directory where 
ntfs was mounted, and Ive got a panic. I tried making a core dump but 
/var/crash is empty. Ive set dumpon /dev/ad4s1b (swap) and change the 
sysctl and it said it was dumping but as I said /var/crash is empty.

Could you try to reproduce it on your box? What am i  doing wrong the dumps?

Thank you,

Petr