Re: [PATCH stable 4.4 1/9] Revert "tcp: detect malicious patterns in tcp_collapse_ofo_queue()"

[maowenan]

On 2018/8/15 21:18, Greg KH wrote:
> On Wed, Aug 15, 2018 at 09:21:00PM +0800, Mao Wenan wrote:
>> This reverts commit dc6ae4dffd656811dee7151b19545e4cd839d378.
> 
> I need a reason why, and a signed-off-by line :(

stable 4.4 only back port two patches to fix CVE-2018-5390, I have tested they 
can't
fix fully because of simple queue used in lower version, so we need change 
simple queue
to RB tree to finally resolve. But 9f5afeae have many conflicts with tcp: 
detect malicious patterns in tcp_collapse_ofo_queue()
and tcp: avoid collapses in tcp_prune_queue() if possible, and there are patch 
series from Eric in mainline to fix CVE-2018-5390,
so I need revert part of patches in stable 4.4 firstly, then apply 9f5afeae, 
and reapply five patches from Eric.
9f5afeae tcp: use an RB tree for ooo receive queue

> 
> thanks,
> 
> greg k-h
> 
>