On 11/07/2018 08:10 PM, 배석진 wrote:
>> --------- Original Message ---------
>> Sender : Eric Dumazet <eric.duma...@gmail.com>
>> Date : 2018-11-08 12:57 (GMT+9)
>> Title : Re: (2) [Kernel][NET] Bug report on packet defragmenting
>>
>> On 11/07/2018 07:24 PM, Eric Dumazet wrote:
>>
>>> Sure, it is better if RPS is smarter, but if there is a bug in IPv6 defrag
>>> unit
>>> we must investigate and root-cause it.
>>
>> BTW, IPv4 defrag seems to have the same issue.
>
>
> yes, it could be.
> key point isn't limitted to ipv6.
>
> maybe because of faster air-network and modem,
> it looks like occure more often and we got recognized that.
>
> anyway,
> we'll apply our patch to resolve this problem.
Yeah, and I will fix the defrag units.
We can not rely on other layers doing proper no-reorder logic for us.
Problem here is that multiple cpus attempt concurrent rhashtable_insert_fast()
and do not properly recover in case -EEXIST is returned.
This is silly, of course :/
