Re: [PATCH -v2] rmap: make anon_vma_prepare link in all the anon_vmasof a mergeable VMA

From: Linus Torvalds
Date: Sat Apr 10 2010 - 17:35:35 EST




On Sat, 10 Apr 2010, Borislav Petkov wrote:
>
> Damn, nope, still no joy :(. It looked like it was fixed but one of the
> test was to hibernate right after the 3 kvm guests were shut down and I
> guess the mem freeing pattern kinda hits it where it most hurts.

Damn, I really hoped that was it. Three independent bugs found and fixed,
and still no joy? Oh well.

> By the way, do we want to create a new thread - the mailchain is off the
> screen limits of my netbook :)

I prefer to keep it in one thread so that they all show up together if I
need to, but feel free to start a new one. Not a biggie.

> [ 647.492781] BUG: unable to handle kernel NULL pointer dereference at (null)
> [ 647.493001] IP: [<ffffffff810c60a0>] page_referenced+0xee/0x1dc

Well, it sure is consistent. I'll start to think about what else could go
wrong..

Linus
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