Re: mm: NULL ptr deref in anon_vma_interval_tree_verify

[Bob Liu]

On Mon, Nov 5, 2012 at 11:31 AM, Michel Lespinasse <walken@xxxxxxxxxx> wrote:
> On Sun, Nov 4, 2012 at 6:20 PM, Bob Liu <lliubbo@xxxxxxxxx> wrote:
>> The loop for each entry of vma->anon_vma_chain in validate_mm() is not
>> protected by anon_vma lock.
>> I think that may be the cause.
>>
>> Michel, What's your opinionï
>
> Good catch, I think that's it. Somehow it had not occured to me to

Hmm, I attached a simple fix patch.
Sasha,
Could you have a test to see whether it can fix your issue?

Thanks,
-Bob

Attachment: 0001-mm-add-anon_vma_lock-to-validate_mm.patch
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