Re: [PATCH 1/1] iommu/amd: fix incorrect error handling

[Joerg Roedel]

On Sun, Apr 23, 2017 at 06:23:21PM +0800, Pan Bian wrote:
> From: Pan Bian <bianpan2016@xxxxxxx>
> 
> In function amd_iommu_bind_pasid(), the control flow jumps to label
> out_free when pasid_state->mm and mm is NULL. And mmput(mm) is called.
> In function mmput(mm), mm is referenced without validation. This will
> result in a NULL dereference bug. This patch fixes the bug.
> 
> Signed-off-by: Pan Bian <bianpan2016@xxxxxxx>

Applied, thanks.