Re: [BUG 3.12.rc4] Oops: unable to handle kernel paging requestduring shutdown

[Frederic Weisbecker]

On Tue, Oct 15, 2013 at 08:40:25AM +0200, Ingo Molnar wrote:
> 
> * Frederic Weisbecker <fweisbec@xxxxxxxxx> wrote:
> 
> > I've been thinking that CONFIG_DEBUG_LIST could help. Unfortunately it's 
> > good to spot list APIs misuse but, if Linus is right, the problem may be 
> > that the list belongs to an object that has been freed, and I believe 
> > that won't detect such a thing.
> 
> Use-after free should be reliably detectable via CONFIG_DEBUG_PAGEALLOC=y.
> 
> A couple of years ago I wrote a list debugging beast that would catch 
> use-after-free mishaps (sent it to lkml too IIRC), but it was a bit 
> complex and I never found the time to nurse it upstream.

Ok, well CONFIG_DEBUG_PAGEALLOC=y should work for list as for anything, right?

Thanks.

> 
> Thanks,
> 
> 	Ingo
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