mount memory modified after free

[Poul-Henning Kamp]

In message <20051020063303.GA19624 at garage.freebsd.pl>, Pawel Jakub Dawidek writ
es:

>Bascially there is only one place to store mount-point's
>vnode in device structure (IIRC) and if you mount the same provider twice,
>it will be overwritten and you'll not be able to unmount first file system
>without panicing.

There is more, you also need to cope with the UFS snapshot data hung
off the cdev etc.


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.