Re: [PATCH] rmap: validate pointer in anon_vma_clone

[Jianyu Zhan]

On Wed, May 7, 2014 at 10:32 AM, Leon Ma <xindong.ma@xxxxxxxxx> wrote:
> If memory allocation failed in first loop, root will be NULL and
> will lead to kernel panic.

Hello, Leon,

I am afraid not.  unlock_anon_vma_root() has a sanity check NULLness of root,
so it is impossible to panic for a dangling root pointer.



Thanks,
Jianyu Zhan
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