[PATCH] uml: turn off kmalloc always on a fatal signal

We should turn off kmalloc when getting a fatal signal regardless of the mode
we're in.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>