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Date: Mon, 11 Nov 2013 13:33:25 -0800
From: Julian Elischer <julian@freebsd.org>
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Subject: Re: Running `sysctl -a` causes crash (Hyper-V)
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On 11/11/13, 7:49 AM, Pavel Timofeev wrote:
> Great, it helped! Thanks a lot!

the suggested change suggests fragile code. It should be able to 
handle unexpected input..
>
> 2013/11/11 Sergey Kandaurov <pluknet@gmail.com>:
>> On 11 November 2013 18:13, Pavel Timofeev <timp87@gmail.com> wrote:
>>> [...]
>>> (kgdb) p vm_guest
>>> $1 = 3
>>> Current language:  auto; currently minimal
>>> (kgdb)
>>>
>> What if you try this change?
>>
>> Index: sys/kern/subr_param.c
>> ===================================================================
>> --- sys/kern/subr_param.c    (revision 257695)
>> +++ sys/kern/subr_param.c    (working copy)
>> @@ -153,6 +153,7 @@
>>       "none",
>>       "generic",
>>       "xen",
>> +    "hv",
>>       NULL
>>   };
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