Re: more devfs fun (Piled Higher and Deeper)

[Alexander Viro]

... and one more - devfs_unregister() on a directory happening when
mknod() in that directory sleeps in create_entry() (on kmalloc()).

Do you ever read your own code?  It's not like this stuff was hard
to find - I'm just poking into random places and every damn one
contains a hole.  Sigh...

Oh, BTW - here's another one:  think what happens if tree-walking in
unregister() steps on the entry we are currently removing in
devfs_unlink().