Re: [patch] KVM: SVM: prevent DBG_DECRYPT and DBG_ENCRYPT overflow

From: Singh, Brijesh
Date: Thu Mar 28 2019 - 09:58:12 EST




On 3/25/19 1:47 PM, David Rientjes wrote:
> This ensures that the address and length provided to DBG_DECRYPT and
> DBG_ENCRYPT do not cause an overflow.
>
> At the same time, pass the actual number of pages pinned in memory to
> sev_unpin_memory() as a cleanup.
>
> Reported-by: Cfir Cohen <cfir@xxxxxxxxxx>
> Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
> ---
> arch/x86/kvm/svm.c | 12 +++++++++---
> 1 file changed, 9 insertions(+), 3 deletions(-)
>


Reviewed-by: Brijesh Singh <brijesh.singh@xxxxxxx>

thanks