Re: [PATCH] kvm: x86: mmu: fix memoryleak in kvm_mmu_vendor_module_init()
From: Miaohe Lin
Date: Tue Aug 30 2022 - 21:58:23 EST
On 2022/8/31 9:07, Huang, Kai wrote:
>> On Tue, Aug 30, 2022, Huang, Kai wrote:
>>> On Tue, 2022-08-30 at 21:40 +0000, Sean Christopherson wrote:
>>>> On Tue, Aug 23, 2022, Miaohe Lin wrote:
>>>>> When register_shrinker() fails, we forgot to release the percpu
>>>>> counter
>>>
>>>>> kvm_total_used_mmu_pages leading to memoryleak. Fix this issue by
>>>>> calling
>>>>> percpu_counter_destroy() when register_shrinker() fails.
>>>>>
>>>>> Fixes: ab271bd4dfd5 ("x86: kvm: propagate register_shrinker return
>>>>> code")
>>>>> Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
>>>>> ---
>>>>
>>>> Pushed to branch `for_paolo/6.1` at:
>>>>
>>>> https://github.com/sean-jc/linux.git
>>>>
>>>> Unless you hear otherwise, it will make its way to kvm/queue "soon".
>>>>
>>>> Note, the commit IDs are not guaranteed to be stable.
>>>
>>> Sorry for late reply.
>>>
>>> The commit message has "we". Should we get rid of it?
>>
>> Avoiding pronouns is obviously my preference, but sometimes even I set aside
>> my crusade to move things along :-)
>
> Yeah sure. I was replying just in case you didn't notice it :)
Please ignore my previous question in another thread. I just saw this patch. ;)
Many thanks.
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