Re: [x86] BUG: unable to handle kernel NULL pointer dereference at (null)

[Linus Torvalds]

On Tue, Oct 8, 2013 at 10:15 AM, Fengguang Wu <fengguang.wu@xxxxxxxxx> wrote:
>
> [   27.865982] Kernel BUG at c10563af [verbose debug info unavailable]

Ugh, you've turned off DEBUG_BUGVERBOSE.

We probably shouldn't even allow that. The space savings aren't worth the pain.

I'm not seeing the pattern in your oopses, there's at least three
different cases. At a guess, it's some lock - or a memory allocator -
that is broken by the bitop breakage, and then the oopses are just
fallout from that..

            Linus
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