Re: [PATCH] ARM: Convert BUG() to use unreachable()

Russell King - ARM Linux
2009-12-17T19:06:56Z

On Thu, Dec 17, 2009 at 10:35:17AM -0800, Joe Buck wrote:
> Besides, didn't I see a whole bunch of kernel security patches related
> to null pointer dereferences lately? If page 0 can be mapped, you
> suddenly won't get your trap.

Page 0 can not be mapped on ARM kernels since the late 1990s, and this
protection is independent of the generic kernel.

Milage may vary on other architectures, but that's not a concern here.