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Re: [Xen-ia64-devel] [RFC] refcnt countup bug

from [Masaki Kanno]

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To:	Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
Subject:	Re: [Xen-ia64-devel] [RFC] refcnt countup bug
From:	Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>
Date:	Thu, 02 Feb 2006 14:30:59 +0900
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Hi yamahata,

Thank you. I understood.

Best regards,
 Kan

Isaku Yamahata wrote:
>Hi Kanno.
>
>On Thu, Feb 02, 2006 at 01:34:40PM +0900, Masaki Kanno wrote:
>
>> I found a bug regarding updating domain struct's "refcnt", that is,
>> "refcnt" is incremented 2 times in the following condition.
>> (I belive it should be incremented only once).
>>  
>>  - Hypercall (DOM0_GETMEMLIST) is issued and
>>  - This is the first memory allocation for that DomU
>
>put_domain() call by free_domheap_pages() does
>a decrement corresponding to get_knownalive_domain(), I think.
>It prevents from freeing a domain before freeing all domain's memory.
>It means that, to free a domain, its memory must be freed somehow.
>
>-- 
>yamahata
>


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